This voltage inverter circuit was found in a Mullard transistor manual from 1960. Information on the transformers was given. Transistors are germanium types.
This project is from a 1982 documentation, based on an astable multivibrator with two transistors. The...
Found in a 1967 US magazine this circuit generates positive and negative voltage pulses from a...
Rumble is a low frequency noise between 25 and 200 Hz that appears in old turntables, affecting...