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You can easily find step down transformers in radios tv vcr cd players shaver dish antenna receivers laptop chargers printers stabilizers and so on.
Step up and step down transformer formula. Torque reducing gear train steps torque down while stepping speed up. The same transformer can be used as a step up or a step down transformer. Step up transformer extends the voltages from 220v 11kv or above whereas step down transformer reduces the voltages from 440 220v 220 110v or 110 24v 20v 10vetc. The step up step down effect of coil turn ratios in a transformer is analogous to gear tooth ratios in mechanical gear systems transforming values of speed and torque in much the same way.
As the number of turns will be less in secondary winding so will be total induced emf and hence the output voltage in the secondary will also be less than the primary input voltage. Generally if the transformer is mentioned by 11kv 415v means it is called step up transformer the input will be given as 11kv and the output will be connected to 415v. The number of turns in secondary winding should always be less than the number of turns in the primary winding of the transformer i e np ns to work transformer as step down transformer. Step up and step down transformers for power distribution purposes can be gigantic in proportion to the power transformers previously shown some units standing as tall as a home.
At the same time the transformer is mentioned by 22kv 220kv means it is called a step up transformer. In this formula v is voltage n is the number of turns and the subscripts p and s refer to the primary and secondary windings respectively. To calculate the voltage change we can use the following formula for both step up and step down transformers. Thus when a transformer steps up a voltage it steps down the current and vice versa so that the output power is always at the same value as.
It works on the principle of magnetic induction between the coils. Step up and step down transformer overview. The following photograph shows a substation transformer standing about twelve feet tall. Explain whether this is a step up step down or isolation transformer and also explain what distinguishes the primary winding from the secondary winding in any transformer.
Although the transformer can step up or step down voltage it cannot step up power.
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