Ref :
https://youtube.com/playlist?list=PLqmvgbXKyUuTkvHXylEbZdt4bDisGIgcP&si=h7dE65VinwIasqKs
https://youtu.be/h4vE0jzWgaw?si=FcIRhGnYS_uCReyv
Heathkit of the Month #33 – SB-200 Linear Amplifier
SK201 SOFT KEY – Documentation PDF
SK201 SOFT KEY V3.1 Documentation PDF
SS100 SOFT START MODULE v3.0 Documentation PDF
SS221 SOFT START V3.1 Documentation PDF
PM-200 POWER SUPPLY MODULE Documentation PDF
https://ae8q.com/2022/09/a-new-high-voltage-power-board-for-the-heathkit-sb-200-part-2/
https://www.youtube.com/watch?v=LOMwedCdO4Y
https://harbachelectronics.com/file-downloads/
Creation KICAD
