Determine the type you need (primary voltage, secondary voltage, power rating in volt amperes - not watts, size, etc.) then check a catalog at an electrical or electronics parts store for a standard transformer meeting your requirements. If you find one and the store stocks it, buy it; if not have them order it for you.
If there is no standard transformer meeting your requirements, one would have to have a company that custom winds Transformers design and build it for you. Unless you would be buying in quantity, this will be expensive.
A step up transformer is used to step up an AC voltage
A transformer can be used, either a step-up or step-down transformer, to deliver the power at a different voltage from the normal supply voltage.
to derive 120 volts from 480 volts you have to use a transformer, based on your needs. If you needed 100 amps at 120 volt single phase you would need a 12kva transformer. This is just an example.
Yes, a 24V 40VA transformer can be used for a device that requires 24V 1A. The VA rating (volt-ampere) is a measure of the overall capacity of the transformer to deliver power, so the 40VA transformer has the capacity to supply the 1A required by the device.
A 22VA transformer has a power rating of 22 watts. VA (volt-ampere) is a unit used to measure the apparent power in an electrical circuit.
Rectifiers turn A/C into D/C, but transformers can only run on A/C.
Transformer is the only device which is capable to stepup or stepdown an ac signal. That's why its used widely in ac supply.
Transformer is a electric device which it can be used for to transfer the ac current one circuit to another i.e. To reduces voltage and without frequency changing. Many types of transformer available in various purpose i.e. Stepup transformer, stepdowntransformer ,autotransformer ,,,,,,,etc answered by arivukkarasu.a
A step-up transformer produces a voltage across its secondary winding which is higher than its primary winding. The secondary winding is connected to the load, while the primary winding is connected to the supply.
Confusing question! If it is, why transformers use ac? Then it is, for induction there must be change in flux linkage which is possible with ac which frequently changes polarity. In dc there wont be any change. If que is, why step up is used? There will be considerable voltage drop with distant transmission. For this reason step up voltage is required with step up transformer. Since, in high voltages this drop is negligible or efficient transmission
in transformers for instance a stepup transformer does exactly that, steps up the voltageAND/OR theamperage and a step down transformer reduces the same. if you have a machine that operates on say 120 volts alternating current single phase and your building or power supply in your buildingis set up for or delivers480 volts alternating current-three phase you will need a step down transformer to operate the machine.
A transformer used to step up or down the value of voltage.
Power is normally transmitted at high voltage through step up/step down transformers to minimize the power losses in the transmission lines (this is one reason anyway). Since power loss is equivalent to the resistance of the conductor times the current squared, stepping up the voltage by a factor of two cuts the transmission losses by a factor of (2^2 = ) 4.
simple step up transformer
the potion ludacris
An oil filled transformer is usually used outdoors and a dry core transformer is usually used indoors.
A power transformer is used to provide power (to your home, for example), an instrument transformer is used to measure voltage or current (for metering, for example).