This circuit is for analog TV video signals and was found in the March 1988 issue of Radio Electronics magazine. The circuit uses a Maxim integrated circuit that can still be found.
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...