Found in a 90s Siliconix documentation, this high voltage power supply uses components from that time. MOSFETs can be current equivalents.
This radio's transistor is powered with the signal's own energy, producing its amplification....
Found in a 90s Electronic Design, this circuit can be used as a shield in current projects. The...
The integrated circuit used in this regulator is not very common today. The circuit is from old...