Electrical engineering of people

If you are looking for an extremely modern looking and decorative type of thermometer, then what you need is a Galileo thermometer or sometimes called Galileo or galilei thermometer. This device comes in very attractive colors which make it even more pleasing to look at. The tool got it's name from a famous astronomer, inventor and scientist - Galileo Galilie.

The device's body is comprised of a long thin and narrow tube with water and small colorful balls inside. The balls are not just for the aesthetical value but the balls are used to determine the temperature for each of them have different densities and size. Each of these balls have their own counter weight which is in a form of metal and is usually attached on the bottom. This metal counter weight is the one responsible in making changes in the overall density.

Once the device detects a change in temperature, changes the density of the water inside. So what will happen is - the colorful balls having high densities will sink while the balls with low densities will float.

To give you an example of how to read the temperature using the Galileo thermometer, given that the device has four balls inside and these balls are known to have the following information:

Pink Ball - 60 degrees
Red Ball - 65 degrees
Orange Ball - 70 degrees
Violet Ball - 75 degrees

If the temperature detected is 67 degrees, then the pink and red ball will go down to the bottom because they have low densities and the orange and violet ball will float. To read it, the temperature will then be between 65 - 70 degrees. The only down side in using this device is that it only gives you an estimate as to what the temperature is. You will be comparing this to the other thermometers who can give you the exact temperature in just minutes. But honestly, the estimate given by this device is more than enough for you to gauge if the surrounding is warm or not.

Most people use this device as a decorative item inside the house. This is usually placed inside the bedroom or sometimes in the living room where your guests can easily see it.

An innovation to this kind of device is the floating type. This model was introduced just recently in the market and sold like pancakes because you cannot really resist the attractiveness it gives and how nice it would look like in your home. It can also give you the readings in Celsius and Fahrenheit. This model is usually made of cylindrical glass tube with a disc that replaced the traditional balls. It is quite handy for the entire device only weighs 3.7 pounds and only measures around seven inches by seven inches approximately. So if you want to glam up your space whether your home rooms like the living area, bedroom, patio and so on...you can also use this and place it on top of your office desk or anywhere in your receiving area.

If you are looking for an extremely modern looking and decorative type of thermometer, then what you need is a Galileo thermometer or sometimes called Galileo or galilei thermometer. This device comes in very attractive colors which make it even more pleasing to look at. The tool got it's name from a famous astronomer, inventor and scientist - Galileo Galilie.

The device's body is comprised of a long thin and narrow tube with water and small colorful balls inside. The balls are not just for the aesthetical value but the balls are used to determine the temperature for each of them have different densities and size. Each of these balls have their own counter weight which is in a form of metal and is usually attached on the bottom. This metal counter weight is the one responsible in making changes in the overall density.

Once the device detects a change in temperature, changes the density of the water inside. So what will happen is - the colorful balls having high densities will sink while the balls with low densities will float.

To give you an example of how to read the temperature using the Galileo thermometer, given that the device has four balls inside and these balls are known to have the following information:

Pink Ball - 60 degrees
Red Ball - 65 degrees
Orange Ball - 70 degrees
Violet Ball - 75 degrees

If the temperature detected is 67 degrees, then the pink and red ball will go down to the bottom because they have low densities and the orange and violet ball will float. To read it, the temperature will then be between 65 - 70 degrees. The only down side in using this device is that it only gives you an estimate as to what the temperature is. You will be comparing this to the other thermometers who can give you the exact temperature in just minutes. But honestly, the estimate given by this device is more than enough for you to gauge if the surrounding is warm or not.

Most people use this device as a decorative item inside the house. This is usually placed inside the bedroom or sometimes in the living room where your guests can easily see it.

An innovation to this kind of device is the floating type. This model was introduced just recently in the market and sold like pancakes because you cannot really resist the attractiveness it gives and how nice it would look like in your home. It can also give you the readings in Celsius and Fahrenheit. This model is usually made of cylindrical glass tube with a disc that replaced the traditional balls. It is quite handy for the entire device only weighs 3.7 pounds and only measures around seven inches by seven inches approximately. So if you want to glam up your space whether your home rooms like the living area, bedroom, patio and so on...you can also use this and place it on top of your office desk or anywhere in your receiving area.

Temperature is the most important and essential thing associated with the fridges. The first thing which comes in mind with fridges is temperature. It is highly important to control the internal cooling temperature of a fridge. And for that one need a highly accurate measurement of temperature. Because if you can't control the temperature you may have to lose your food articles at home and at commercial level you may lose your customers and therefore money. In the summer season, it becomes more important. Due to intense heat outside, temperature inside the fridge also increases. To keep it to an optimum level one needs a measurement at regular intervals.

So, how one can monitor and manage the fridge's temperature?

Monitoring of the fridge's temperature can be done easily by a fridge thermometer. This can be defined simply as: "A scale or device that is used for the measurement of the internal temperature of a fridge". By monitoring the temperature one can make necessary adjustments to fridge according to his requirements.

These thermometers have their role in homes as well as in industry and at commercial level. At home, These are very useful because they can help to keep the food items fresh. At commercial level their importance is even much more. Usually display fridges are used at commercial level and their doors are opened again and again, so it becomes more difficult to maintain their temperature. To accomplish this, more advance and accurate This thermometers are used.
These thermometers are basically of two types.

Analog Fridge Thermometers

Digital Fridge Thermometer

Both the options are good and any one of these can be used. So it is up to the user that which option he likes. Some people prefer the traditional methods while others may give priority to some advance techniques.

Analog thermometers are usually connected directly to the thermostat of a fridge. They mostly have a simple dial that can be used to set the temperature. Temperature can be set to a desired level by just turning the dial to specific voltage level.

Digital thermometers are more sophisticated and modern thermometers. They have an electronic display and an electronic control panel. Temperature measurement is quite easy and convenient because you can simply check the temperature from electronic display screen. Different electronic buttons are used to set the temperature to optimum level. Most of the people prefer digital fridge thermometers because of the convenience they provide, and also because of their modern and attracting features.

With the technological advancements, modern thermometers with advance features and more precise measurement are readily available in the market. Beer and Soda Fridge Thermometers, Wireless Fridge Thermometer and Wine Fridge Thermometer are few of them.

Thermometers should always be used according to their specifications. One thermometer can not be suitable for different fridges. Lots of The thermometers are available in the market but it should always be chosen carefully. Some thermometers may not bear the extreme low temperature and thus can be damaged. And mercury inside these thermometers can make your food articles poisonous. So some great care is required while purchasing a Fridge Thermometer.

Temperature is the most important and essential thing associated with the fridges. The first thing which comes in mind with fridges is temperature. It is highly important to control the internal cooling temperature of a fridge. And for that one need a highly accurate measurement of temperature. Because if you can't control the temperature you may have to lose your food articles at home and at commercial level you may lose your customers and therefore money. In the summer season, it becomes more important. Due to intense heat outside, temperature inside the fridge also increases. To keep it to an optimum level one needs a measurement at regular intervals.

So, how one can monitor and manage the fridge's temperature?

Monitoring of the fridge's temperature can be done easily by a fridge thermometer. This can be defined simply as: "A scale or device that is used for the measurement of the internal temperature of a fridge". By monitoring the temperature one can make necessary adjustments to fridge according to his requirements.

These thermometers have their role in homes as well as in industry and at commercial level. At home, These are very useful because they can help to keep the food items fresh. At commercial level their importance is even much more. Usually display fridges are used at commercial level and their doors are opened again and again, so it becomes more difficult to maintain their temperature. To accomplish this, more advance and accurate This thermometers are used.
These thermometers are basically of two types.

Analog Fridge Thermometers

Digital Fridge Thermometer

Both the options are good and any one of these can be used. So it is up to the user that which option he likes. Some people prefer the traditional methods while others may give priority to some advance techniques.

Analog thermometers are usually connected directly to the thermostat of a fridge. They mostly have a simple dial that can be used to set the temperature. Temperature can be set to a desired level by just turning the dial to specific voltage level.

Digital thermometers are more sophisticated and modern thermometers. They have an electronic display and an electronic control panel. Temperature measurement is quite easy and convenient because you can simply check the temperature from electronic display screen. Different electronic buttons are used to set the temperature to optimum level. Most of the people prefer digital fridge thermometers because of the convenience they provide, and also because of their modern and attracting features.

With the technological advancements, modern thermometers with advance features and more precise measurement are readily available in the market. Beer and Soda Fridge Thermometers, Wireless Fridge Thermometer and Wine Fridge Thermometer are few of them.

Thermometers should always be used according to their specifications. One thermometer can not be suitable for different fridges. Lots of The thermometers are available in the market but it should always be chosen carefully. Some thermometers may not bear the extreme low temperature and thus can be damaged. And mercury inside these thermometers can make your food articles poisonous. So some great care is required while purchasing a Fridge Thermometer.

Setting up your own solar power generating unit may not be a very cheap option for you. However, it is a great option for the environment. By using solar power you are reducing the pollution that you are producing as well as reducing your carbon footprint. Thus solar helps improve the environment that we live in. This is one of the reasons why governments provide assistance to reduce the cost of solar use.

Why governments benefit from reducing the cost of solar power

There are several countries and states on Earth where power is generated mainly from non-renewable sources such as the burning of fossil fuels. This creates a lot of pollution and harms the environment in a big way. Thus governments are working to reduce this pollution. One of the most effective and cheapest ways to reduce this pollution is to encourage consumers to set up their own renewable power production units by reducing the cost of solar. This takes demand for electricity off the grid and the government has to burn less of the fossil fuels. Along with that if the people start selling the electricity produced back to the government; the need for the burning of fossil fuels reduces even further.

How the government provides assistance to consumers

Governments may provide assistance to the people who are keen in installing solar panels both financially and non-financially. Financial assistance could be in the form of a grant or subsidy that would help the person to set up the solar panel with the minimum initial investment thus reducing the cost of solar power. Along with this the government may also cover the cost of the linking up of the panel to the grid which would save the people a lot of expenditure and would enable them to sell the electricity back to the grid. To help set up the power unit the government may also provide a discount on the components of the solar system such as panels and installation equipment such as rails. All of these methods help in bringing down the cost of solar substantially for consumers.

The government may also provide non-financial benefits to the people which can be in several forms. It may help to reduce the cost of solar power by providing consultation services to those interested at no fee. The consultants would help bring the cost of solar power down substantially for the individual interested families.

Not all governments provide assistance for solar power

Although most governments have incentives to help reduce the cost of solar power for individual households, there are also some governments that would not find this useful. The reason for this is that some governments produce all of their electricity from renewable sources such as from geothermal energy, wind power and solar power. Thus these governments would not be especially keen on getting solar panels installed in individual homes. However, if there is a shortage of electrical power in the area, the government may still assist the people in bringing down the cost of solar power which would help the households without affordable power and high electrical bills.

Setting up your own solar power generating unit may not be a very cheap option for you. However, it is a great option for the environment. By using solar power you are reducing the pollution that you are producing as well as reducing your carbon footprint. Thus solar helps improve the environment that we live in. This is one of the reasons why governments provide assistance to reduce the cost of solar use.

Why governments benefit from reducing the cost of solar power

There are several countries and states on Earth where power is generated mainly from non-renewable sources such as the burning of fossil fuels. This creates a lot of pollution and harms the environment in a big way. Thus governments are working to reduce this pollution. One of the most effective and cheapest ways to reduce this pollution is to encourage consumers to set up their own renewable power production units by reducing the cost of solar. This takes demand for electricity off the grid and the government has to burn less of the fossil fuels. Along with that if the people start selling the electricity produced back to the government; the need for the burning of fossil fuels reduces even further.

How the government provides assistance to consumers

Governments may provide assistance to the people who are keen in installing solar panels both financially and non-financially. Financial assistance could be in the form of a grant or subsidy that would help the person to set up the solar panel with the minimum initial investment thus reducing the cost of solar power. Along with this the government may also cover the cost of the linking up of the panel to the grid which would save the people a lot of expenditure and would enable them to sell the electricity back to the grid. To help set up the power unit the government may also provide a discount on the components of the solar system such as panels and installation equipment such as rails. All of these methods help in bringing down the cost of solar substantially for consumers.

The government may also provide non-financial benefits to the people which can be in several forms. It may help to reduce the cost of solar power by providing consultation services to those interested at no fee. The consultants would help bring the cost of solar power down substantially for the individual interested families.

Not all governments provide assistance for solar power

Although most governments have incentives to help reduce the cost of solar power for individual households, there are also some governments that would not find this useful. The reason for this is that some governments produce all of their electricity from renewable sources such as from geothermal energy, wind power and solar power. Thus these governments would not be especially keen on getting solar panels installed in individual homes. However, if there is a shortage of electrical power in the area, the government may still assist the people in bringing down the cost of solar power which would help the households without affordable power and high electrical bills.

A Thermistor thermometer is referred to as a semi conductor device that has electrical resistance and found to be proportional to temperature. Basically the word Thermistor formed with the combination of two words named as 'resistor' and 'thermal'. These are known to be the type of resistor with electrical resistance carrying positive or negative temperature resistance which decreases by 3% per degree Celsius.

Basically there are two kinds of thermistors which are referred to as PTC means Positive Temperature Coefficient of Resistance and NTC meaning Negative Temperature Coefficient of Resistance. NTC are the forms which have inverse relation with temperature and resistance of the object which means that when there is an increase in the temperature of the object there will be a proportional decrease in the resistivity too. Simultaneously if there is a decrease in temperature the resistant level will have an increase.

Whereas the PTC are concerned they witness the same change in the temperature and resistance which means that when there is an increase in the temperature the resistance will also get increase and when there is a fall in temperature reading of the object the resistivity too will decrease.

It's Incredible Uses:

• The thermistors are widely used these days in numerous medical, applications. It is appropriately used in clinical stethoscopes or by way of probes at the time of surgery as well as in various medical units to avoid overheating in circuits, such as X-Ray and ECG machines, MRI Scanners, Blood dialysis equipment Infant incubators, etc.

• We may find their effective usage in home gadgets like cell phones, computers, amplifiers, cars, Air conditioners, Clothes dryers, Dishwashers, Electric water heaters, Fire detectors, Home weather stations, Oven temperature control, Refrigerator and freezer temperature Control, Toasters, Washing machines.

• Whereas industrial applications are concerned it has a main role to play in gadgets like Fluid flow measurement, HVAC equipment, Photographic processing equipment, Plastic laminating equipment, Water purification equipment, Welding equipment, Gas flow indicators, vending machines, Aircraft temperature, Missiles and spacecraft temperature, Satellites, etc.

Most popular model in this category is manufactured by Barnant which offers you with incredible specifications as temperature measuring range from 32 to 122??F or 0 to 50??C, large dual display, overrange, underrange, and low-battery indications, Open sensor, DT function to display the differential temperature relating to current plus assessed one, memory storage function up to 99 temperature readings, recall option, automatic or manual field calibration, Splash or shatterproof resistant and with 1/4" probe with plug connector.

Thermistor thermometer is compact, durable, reasonable and user-friendly device that can be used to measure the precise temperature of food, human being, animals, industrial gadgets, etc. These are found to be more instant and accurate as compared to the traditional or analog ones. Few steps on how to use this device:

• The first thing that you need to undertake is switch on the measuring unit.

• After that check the temperature reading status of the unit means it should be on zero level. In case it is not set it down by pressing the reset button on the device.

• Once you are done with this, hold the probe of the unit and make it to contact directly with object or subject you desire to measure. However in case of food you need to insert the probe nearly half inch deep into it and that too once you are finished with the cooking process.

• Later on wait for seconds till you hear a beep sound.

• Then remove the unit out of the measured object or subject and check the temperature reading over the display screen of the gadget.

A Thermistor thermometer is referred to as a semi conductor device that has electrical resistance and found to be proportional to temperature. Basically the word Thermistor formed with the combination of two words named as 'resistor' and 'thermal'. These are known to be the type of resistor with electrical resistance carrying positive or negative temperature resistance which decreases by 3% per degree Celsius.

Basically there are two kinds of thermistors which are referred to as PTC means Positive Temperature Coefficient of Resistance and NTC meaning Negative Temperature Coefficient of Resistance. NTC are the forms which have inverse relation with temperature and resistance of the object which means that when there is an increase in the temperature of the object there will be a proportional decrease in the resistivity too. Simultaneously if there is a decrease in temperature the resistant level will have an increase.

Whereas the PTC are concerned they witness the same change in the temperature and resistance which means that when there is an increase in the temperature the resistance will also get increase and when there is a fall in temperature reading of the object the resistivity too will decrease.

It's Incredible Uses:

• The thermistors are widely used these days in numerous medical, applications. It is appropriately used in clinical stethoscopes or by way of probes at the time of surgery as well as in various medical units to avoid overheating in circuits, such as X-Ray and ECG machines, MRI Scanners, Blood dialysis equipment Infant incubators, etc.

• We may find their effective usage in home gadgets like cell phones, computers, amplifiers, cars, Air conditioners, Clothes dryers, Dishwashers, Electric water heaters, Fire detectors, Home weather stations, Oven temperature control, Refrigerator and freezer temperature Control, Toasters, Washing machines.

• Whereas industrial applications are concerned it has a main role to play in gadgets like Fluid flow measurement, HVAC equipment, Photographic processing equipment, Plastic laminating equipment, Water purification equipment, Welding equipment, Gas flow indicators, vending machines, Aircraft temperature, Missiles and spacecraft temperature, Satellites, etc.

Most popular model in this category is manufactured by Barnant which offers you with incredible specifications as temperature measuring range from 32 to 122??F or 0 to 50??C, large dual display, overrange, underrange, and low-battery indications, Open sensor, DT function to display the differential temperature relating to current plus assessed one, memory storage function up to 99 temperature readings, recall option, automatic or manual field calibration, Splash or shatterproof resistant and with 1/4" probe with plug connector.

Thermistor thermometer is compact, durable, reasonable and user-friendly device that can be used to measure the precise temperature of food, human being, animals, industrial gadgets, etc. These are found to be more instant and accurate as compared to the traditional or analog ones. Few steps on how to use this device:

• The first thing that you need to undertake is switch on the measuring unit.

• After that check the temperature reading status of the unit means it should be on zero level. In case it is not set it down by pressing the reset button on the device.

• Once you are done with this, hold the probe of the unit and make it to contact directly with object or subject you desire to measure. However in case of food you need to insert the probe nearly half inch deep into it and that too once you are finished with the cooking process.

• Later on wait for seconds till you hear a beep sound.

• Then remove the unit out of the measured object or subject and check the temperature reading over the display screen of the gadget.

The use of industrial generators has been very significant on the immense change in power systems. As a matter of fact, among the other available models of generators, it is considered to be one of the most reliable ones. As its name suggests it is very useful during emergency. You can be assured that it will be able to supply you with the right amount of electricity during times of emergency. If you are not yet convinced with the benefits that you can get as you purchase this kind of generator then you can read thoroughly the other benefits listed below.

To begin with, industrial generators are readily available in different models as per requirements. Indeed, you won't have difficulty finding it for it is available over the market and even through online stores. As a matter of fact, if you check through online stores you can purchase it in a cheaper price because there are other pre-owned generators that are being sold there. Moreover, you can also place an order through retail stores near you. There are other various ways in which you can purchase it.

Nonetheless, you need to be aware that if you use industrial generator you have to be very particular with the allowed industry requirements. For instance, if it is required with a high voltage or power then the power that is within this generator can also be set higher. All you need to do is to actually purchase the available fuel that comes in different types. The different types of fuels are as follows: diesel, petrol, gasoline, propane and many others. Now, if you are in doubt about which among those fuels you need to use for your generator then you can ask the experts about it or you can also search through the internet for you to be really definite with the fuel that you will purchase.

Another thing that you need to understand as you purchase industrial generators is that it is engineered and designed for a certain purpose. This simply means that you should never use it in any other way. Moreover, with the various kinds of generators comes other ways on how you can take good care of it and you have to be very particular with this. It is also available as per requirement and can also be custom-made in order to meet your needs and as well as other customers'.

The use of industrial generators has been very significant on the immense change in power systems. As a matter of fact, among the other available models of generators, it is considered to be one of the most reliable ones. As its name suggests it is very useful during emergency. You can be assured that it will be able to supply you with the right amount of electricity during times of emergency. If you are not yet convinced with the benefits that you can get as you purchase this kind of generator then you can read thoroughly the other benefits listed below.

To begin with, industrial generators are readily available in different models as per requirements. Indeed, you won't have difficulty finding it for it is available over the market and even through online stores. As a matter of fact, if you check through online stores you can purchase it in a cheaper price because there are other pre-owned generators that are being sold there. Moreover, you can also place an order through retail stores near you. There are other various ways in which you can purchase it.

Nonetheless, you need to be aware that if you use industrial generator you have to be very particular with the allowed industry requirements. For instance, if it is required with a high voltage or power then the power that is within this generator can also be set higher. All you need to do is to actually purchase the available fuel that comes in different types. The different types of fuels are as follows: diesel, petrol, gasoline, propane and many others. Now, if you are in doubt about which among those fuels you need to use for your generator then you can ask the experts about it or you can also search through the internet for you to be really definite with the fuel that you will purchase.

Another thing that you need to understand as you purchase industrial generators is that it is engineered and designed for a certain purpose. This simply means that you should never use it in any other way. Moreover, with the various kinds of generators comes other ways on how you can take good care of it and you have to be very particular with this. It is also available as per requirement and can also be custom-made in order to meet your needs and as well as other customers'.

Producing energy, such as electricity is essential in our fast-paced and rapidly changing world. We now run more electrical devices than ever, from TVs, to computers, to telephones, servers and many more. But while we can often rely on our electrical output at home and at work, it can be very difficult to get energy outside, especially if you are far from a city, and it can be even harder to restore electricity to a building.

However, generators can fantastic inventions that are able to create mechanical energy into electrical energy, which basically means that they can produce electricity. While many people are probably used to seeing generators at outdoor events, such as music festivals like T in the Park, Glastonbury and Bestival, they are also a common site at other outdoor events that require extra power, such as at weddings, to power the band and lighting in external extensions, like a wedding marquee.

But how does it do it? Well, to put it simply, an electric generator is a device or piece of equipment that converts mechanical energy to electrical energy. To do this, the generator uses electrons, and forces them to flow through an electrical circuit, which is usually external, our outside the generator itself. The mechanical energy that creates the electrical energy is usually created by an internal energy inside the generator, be it an internal combustion engine, a wind turbine, compressed air, or even a hand crank that has to be manually turned by a person in order to generate mechanical power.

A generator is made up of several parts, both mechanical and electrical. The mechanical parts of the generator are known as the rotor and the stator; the rotor is, as the name suggestions, the rotating part, and the stator is the still or stationary part of the device. The electrical parts of the generator are the armature, which is the component that produces electricity, and can be found either on the rotor or the stator, and the field, which is a magnetic field that can be created by either electromagnets or other, permanent magnets that can be found on either the rotor or the stator.

While this is the basic structure of many electric generators, dome use what's known as field coils, and not permanent magnets, but the field coils need to be powered in order for them to work. If they aren't powered, the device will not work properly, and this will lead to the rotor in the generator spinning without producing electricity, which means that it will be spinning for no reason, so always make sure that the field coils are powered. However, some smaller generators are known as 'self-excited' generators', which means that the aforementioned field coils are powered by the current produced by the generator, and the field coils are connected with the armature wiring.

So, that was a very brief explanation of what a generator is and how it works, and know you know the very basics of a generator, you can always find a little bit more out about them, or even look into generator hire later on if you so wish.

Producing energy, such as electricity is essential in our fast-paced and rapidly changing world. We now run more electrical devices than ever, from TVs, to computers, to telephones, servers and many more. But while we can often rely on our electrical output at home and at work, it can be very difficult to get energy outside, especially if you are far from a city, and it can be even harder to restore electricity to a building.

However, generators can fantastic inventions that are able to create mechanical energy into electrical energy, which basically means that they can produce electricity. While many people are probably used to seeing generators at outdoor events, such as music festivals like T in the Park, Glastonbury and Bestival, they are also a common site at other outdoor events that require extra power, such as at weddings, to power the band and lighting in external extensions, like a wedding marquee.

But how does it do it? Well, to put it simply, an electric generator is a device or piece of equipment that converts mechanical energy to electrical energy. To do this, the generator uses electrons, and forces them to flow through an electrical circuit, which is usually external, our outside the generator itself. The mechanical energy that creates the electrical energy is usually created by an internal energy inside the generator, be it an internal combustion engine, a wind turbine, compressed air, or even a hand crank that has to be manually turned by a person in order to generate mechanical power.

A generator is made up of several parts, both mechanical and electrical. The mechanical parts of the generator are known as the rotor and the stator; the rotor is, as the name suggestions, the rotating part, and the stator is the still or stationary part of the device. The electrical parts of the generator are the armature, which is the component that produces electricity, and can be found either on the rotor or the stator, and the field, which is a magnetic field that can be created by either electromagnets or other, permanent magnets that can be found on either the rotor or the stator.

While this is the basic structure of many electric generators, dome use what's known as field coils, and not permanent magnets, but the field coils need to be powered in order for them to work. If they aren't powered, the device will not work properly, and this will lead to the rotor in the generator spinning without producing electricity, which means that it will be spinning for no reason, so always make sure that the field coils are powered. However, some smaller generators are known as 'self-excited' generators', which means that the aforementioned field coils are powered by the current produced by the generator, and the field coils are connected with the armature wiring.

So, that was a very brief explanation of what a generator is and how it works, and know you know the very basics of a generator, you can always find a little bit more out about them, or even look into generator hire later on if you so wish.

An axial fan is one in which the extracted air is forced to move parallel to the shaft about which the blades rotate. Most domestic wall fans use an axial impellar and are ideal for bathrooms, toilets and smaller rooms where the air is to be ducted straight through the wall or installed in a window.

Axial fans are not good for long duct runs. Anything over 5m will seriously impair their ability to extract air because of the larger air pressures present in the duct. When installing an axial type one should also avoid bending the duct if possible as this will also add to the pressure in the duct. In these situations one should use a centrifugal fan.

Centrifugal fans extract air at right angles to the intake of the fan, and spin the air outwards to the outlet by deflection and centrifugal force. The impeller rotates, causing air to enter the fan near the shaft and move perpendicularly from the shaft to the opening in the fan casing.

A centrifugal fan produces more pressure for a given air volume, and is used in installations where duct run is over 5 metres. Indeed, such is their efficiency that some centrifugal fans, such as the Vent Axia Solo can be used in a duct run up to 50m!

Centrifugal fans come in two main types: As an Inline duct fan or as a wall mounted fan. The wall mounted centrifugal fan looks just like a standard axial fan. Since the impellar is hidden by the front grille and casing it can be hard to differentiate the two but the price will usually give it away: Centrifugal wall fans are usually more expensive than axial fans.

Wall mounted centrifugal fans are often see in rooms which do not have exterior walls. Such rooms do not have windows or any natural ventilation and these circumstances usually require a long duct run to reach the outside of the building. The most common problem when air is not being extracted properly is when an axial fan is installed in this type of room... They are simply not designed for this operation.

Inline extractor fans, as the name suggests are situated in the length of ducting. They therefore look completely different from wall fans but most importantly are not installed in the room from which they are extracting air. Ducting will run from one end of the fan to a ceiling grille in the extraction zone and from the exhaust end of the fan to the outside grille. Inline fans are excellent for use above bathrooms or kitchens where extra extraction power is required.

An axial fan is one in which the extracted air is forced to move parallel to the shaft about which the blades rotate. Most domestic wall fans use an axial impellar and are ideal for bathrooms, toilets and smaller rooms where the air is to be ducted straight through the wall or installed in a window.

Axial fans are not good for long duct runs. Anything over 5m will seriously impair their ability to extract air because of the larger air pressures present in the duct. When installing an axial type one should also avoid bending the duct if possible as this will also add to the pressure in the duct. In these situations one should use a centrifugal fan.

Centrifugal fans extract air at right angles to the intake of the fan, and spin the air outwards to the outlet by deflection and centrifugal force. The impeller rotates, causing air to enter the fan near the shaft and move perpendicularly from the shaft to the opening in the fan casing.

A centrifugal fan produces more pressure for a given air volume, and is used in installations where duct run is over 5 metres. Indeed, such is their efficiency that some centrifugal fans, such as the Vent Axia Solo can be used in a duct run up to 50m!

Centrifugal fans come in two main types: As an Inline duct fan or as a wall mounted fan. The wall mounted centrifugal fan looks just like a standard axial fan. Since the impellar is hidden by the front grille and casing it can be hard to differentiate the two but the price will usually give it away: Centrifugal wall fans are usually more expensive than axial fans.

Wall mounted centrifugal fans are often see in rooms which do not have exterior walls. Such rooms do not have windows or any natural ventilation and these circumstances usually require a long duct run to reach the outside of the building. The most common problem when air is not being extracted properly is when an axial fan is installed in this type of room... They are simply not designed for this operation.

Inline extractor fans, as the name suggests are situated in the length of ducting. They therefore look completely different from wall fans but most importantly are not installed in the room from which they are extracting air. Ducting will run from one end of the fan to a ceiling grille in the extraction zone and from the exhaust end of the fan to the outside grille. Inline fans are excellent for use above bathrooms or kitchens where extra extraction power is required.