Field Effect Transistor

A Field Effect Transistor FET............

• is a POWER operated device

• is a VOLTAGE operated device

• is a CURRENT operated device

If the reverse bias on the gate of a JFET is increased, then width of the conducting channel

• remains the same

• is increased

• is decreased

The main types of field effect transistor are

• BJT and FET

• JFET and MOSFET

• UJT and FET

How the JFET transistor works?

• Base-emitter voltage causes media flow

• Maximum voltages and currents of the electrodes

• The ID is controlled by electric field between gate & conducting channel

What is the biasing at Gate-Source junction of JFET?

• Forward biased

• Reverse biased

What are the two basic types of junction field-effect transistors?

• MOSFET and GaAsFET.

• N-channel and P-channel.

• Silicon FET and germanium FET.

• High power and low power.

What is pinch off region?

• The minimum voltage required to turn on the FET

• The maximum voltage a FET can withstand

• The drain current remains constant at its maximum

The three legs of a JFET are called the Gate, emitter, and source.

• True

• False

What will happen if gate voltage applied is forward bias voltage?

• Device burns

• More current flows

• Nothing happens

For an n-channel FET, What is the direction of current flow?

• Source to drain

• Gate to source

• Gate to drain

• Drain to source