This circuit is designed to control static loads fed by direct voltage. The circuit is from Motorola documentation from 1968. Equivalent SCRs may be used depending on the load.
This circuit, which can be used as a shield, was found in American documentation from the 1970s....
This circuit for low frequency data transmission was found in the May 1977 issue of Radio...
This circuit activates a relay that has a lamp as a load. The circuit is from a Radio Electronics from...