We found this touch control on a Popular Electronics from 1970. The circuit makes use of an integrated of the time. It can be adapted to use modern equivalent components.
This circuit found in the February 1992 issue of Radio Electronics magazine is designed to adapt an...
This circuit was obtained in a 1969 Mullard manual. The transistors are from that time. The input...
Originally this circuit was indicated for a system of rocket fire by remote control using an FM...