This circuit was found in the 1967 RCA SCR manual. The circuit generates approximately 300 V at a frequency of 1 kHz. The components are from the era.
This symmetrical 1.2 to 35 V source was found in a 1994 documentation. The integrated circuits are...
Found in a 90s Elektor, this mixer makes use of integrated circuits of the time. The supply must be...
This amplifier is specifically designed for portable radio and recorders with a 4 ohms load....