44:21

Op-Amps - Using Operational Amplifiers

1:12:39

Linear DC Power Supplies - Designing & Building Custom DC Power Supplies

34:55

£3 DIY Lab Linear Adjustable Power Supply 0-24V 0-5A INSANELY CHEAP! Bonus: Modifications inside :D

14:42

Is That Negative Resistance - Answers to Questions

37:26

Power For Your Electronics Projects - Voltage Regulators and Converters

21:37

{1139} Joule thief circuit, blocking oscillator, joule ringer

32:45

impulse amplifies current

58:48

How Generators Work, And How To Fix Them.