This source for 50 W amplifiers per channel was found in 1967 Delco documentation. Transistors are from that time, difficult to obtain today.
This digital instrument input circuit was found in the September 1989 issue of Radio Electronics...
Found in an Electronic Design of 1964, this circuit operates with control voltages from 0 to 12 V...
This two-way switch or control shows how to control a lamp from two points. This version is from a...