This circuit was found in a 90s Motorola documentation. The circuit uses two SCRs that must be chosen according to the controlled load. The time depends on CE.
This circuit for link or alarm was found in the Encyclopedia of Electronic Circuits Volume 5 of...
The load on this amplifier is 8-ohm. We found the circuit in a 1972 Motorola amplifier manual. The...
This circuit is from a 1977 Radio Shack documentation. In it we have the activation of an LED for...