We’ve embedded his twenty-minute video after the break. In it he talks about the use of transistors, the difference between NPN and PNP transistors, and the design specifics you need to know ...

Just like with NPN and PNP transistors, there are N-FETs and P ... Vgs is shown as a negative number, say, “-1.7 V”. As you might have noticed, it’s easiest to use P-FETs for high-side ...