Many power supply designs I've found are based on single-chip regulators (LM78xx, LM79xx, LM317, etc.), which require few external components and are supposedly very rugged and reliable. But, since I'm interested in learning how linear power supplies actually function, this series of videos has been extremely helpful. Your approach of building up the circuit in steps and testing as you go makes it easy to understand what is happening, and why.
At some point in this series, you mention adding an OPAMP to do ??? but that would be covered in the OPAMP series. I have looked and can't figure out what to look for. Can you please direct me to the video that adds the last OPAMP to complete the Linear PSU? BTW, your instruction style is the best in general.
Not necessarily. A radio tech really only needs a fixed power supply at 13.8 Volts. Granted I have supplies that range from 0-20V @ 400 Amp at the low voltage end for solid state work to ones that do 0 to 3,000 Volts @ 2 Amps at the high voltage end for RF tube type amplifiers. But for someone who is only repairing two way radios 13.8 Volts is all you need. Most commercial and public service two way radio repair shops are like that.
