Let’s talk about the basics of MOSFET and how to use them. This tutorial is written primarily for non-academic hobbyists, so I will try to simplify the concept and focus more on the practical side of things. However if you are into how MOSFET work, I will share some useful academic articles and ... IRF520 MOSFET Driver Module (HCMODU0083) This little module (HCMODU0083) is a breakout board for the IFR520 MOSFET transistor. The module is designed to switch heavy DC loads from a single digital pin of your microcontroller. P-Channel MOSFET Basics. A P-Channel MOSFET is a type of MOSFET in which the channel of the MOSFET is composed of a majority of holes as current carriers. When the MOSFET is activated and is on, the majority of the current flowing are holes moving through the channels. In the above examples we are switching a LED on/off using power MOSFETs. In the case of the N-channel such as the IRF630 when the gate (G) is greater than 5-volts the LED cuts on.