3 A switched regulator (CB8859E)

Found in a 90s Popular Electronics, this circuit provides a current of 3 to 5 A depending on the transistor.

SSM6K Silicon N Channel MOSFETs
May 2017 - Mouser Electronics announces the availability of new Toshiba SSM6K N Channel MOSFETs...
Audio compressor (CB22154E)
Using integrated circuits from the time, we found this audio compressor in an English publication from...
Lead Acid Car Battery Charger (CB17678E)
The 2009 project is based on the integrated circuit9 LM317T, an adjustable regulator with 3...