NOTICE THERE IS AN ERROR IN ONE OF THE SCHEMATICS: Q2 in the drawing has the collector and emitter reversed. The emitter should be grounded not the collector.
In this video I show how to use N-Channel MOSFET's. This video mostly pertains to 12 volt systems but I talk a little bit about using higher voltages. I also show how to use a MOSFET with a microcontroller.
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