This circuit was obtained from a 1967 General Electric documentation. The circuit makes use of unusual SUS today. Other steps can be added to the circuit.
This is a two-input audio switching circuit. The operational can be of any type and more entries can...
We found this amplifier for automotive use in the Philips integrated circuit manual from 1990. The...
Found in old English documentation this circuit can be made with a BF245 or equivalent. Coils are...