What is the difference between transformer and transistor?

A transformer transfers electrical energy between two circuits. It usually consists of two wire coils wrapped around a core. A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power.

What is the purpose of transformers?

Transformers are employed for widely varying purposes; e.g., to reduce the voltage of conventional power circuits to operate low-voltage devices, such as doorbells and toy electric trains, and to raise the voltage from electric generators so that electric power can be transmitted over long distances.

What is difference between Transistor and Mosfet?

The only difference is in function. A MOSFET is a type of transistor commonly used in switching/amplifier type applications, as they are usually designed for higher power use (so called “high power” transistors are mostly MOSFET and Darlington type).

What is the difference between thyristor and transistor?

Thyristor is a four-layer device while the transistor is a three-layer device. A thyristor needs only a pulse to make it conducting and thereafter it remains conducting. On the other hand a transistor needs a continuous current for keeping it in a conducting state.

Does a transformer use AC or DC?

A transformer is a device which step-up or step-down the level of AC current or voltage without changing the primary (i.e. input source) frequency. Transformer only works on AC and can’t be operated on DC i.e. it has been designed to be operated only and only on alternating current and voltage.

Why MOSFET are better than transistor?

mosfet is much faster than bjt because in a mosfet, only majority carriers are the current. mosfet has a very high input impedance in the megohms range while bjt in the kiloohms range . thus making the mosfet very ideal for amplifier circuits. mosfets are less noisy than bjts.

Can I use MOSFET instead of transistor?

In general we can easily replace a BJT with a MOSFET, provided we take care of the relevant polarities. For an NPN BJT, we may replace the BJT with a correctly specified MOSFET in the following manner: Remove the base resistor from the circuit because we don’t typically need it anymore with a MOSFET.