We have an amplifier. A simple FET radio receiver circuit showing FET biasing. The gate is biased at ground potential through the inductor, and the source is held above ground by the current in ...

Here’s a simple FET circuit that lets you switch power to ... and by taking advantage of this, you can build an amplifier, an electronic load, or a constant-current driver for some LEDs.

Thermal noise current in MOSFET is given by Since noise voltages and currents are small, they can be represented as part of small signal model as shown below Noise Analysis of Common Source Amplifier ...