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 is from a Popular Electronics from April 1991. The magazine no longer exists, but the...
This Vienna bridge multi-band oscillator circuit was found in a 1974 Ferranti transistor manual. The...
This circuit was found in a Hands On Electronics with the suggested application an optical link for...