Basic FET Amplifier

Posted on Feb 4, 2014

This is The Fet Amplifier circuit. This circuit uses FET transistor. The gate of the FET must be negative with respect to the source, so a bias can be achieved in the following manner. The voltage that is across the source resistor is developed by the drain current flowing through the source resistor. Due to that action, the emitter become positiv

Basic FET Amplifier
Click here to download the full size of the above Circuit.

e with respect the zero volts rail. Here is the schematic diagram of the circuit: The fet is biased correctly, since the current does not flow at gate make the gate has a zero volts. So, the gate is negative with respect to the source because the source is positive with respect to the gate. The drain current is controlled by the signal voltage that is applied to the gate. The drain current will be decreased when the signal goes less positive. It will make the drain voltage goes more positive because just a little voltage across the drain resistor. The drain voltage will goes more negative and more voltage across the drain resistor when the drain current is increased because the signal voltage goes more positive. So, the drain voltage does the opposite of the gate voltage. We aim to transmit more information by carrying articles. Please send us an E-mail to wanghuali@hqew. net within 15 days if we are involved in the problems of article content, copyright or other problems. We will delete it soon.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Visual modulation indicator
    18 watt power amplifier using tle2141c
    RC (Remote Control) Switch
    The MAX4104 4105 4304 4305 as the driving capacitive loads
    A small generator and network control circuit
    Normally closed contact burglar alarm circuit diagram
    LC189 making decorative lanterns with fans