Found in the July 1970 Radio Electronics magazine, this circuit has an adjustable activation time that depends on capacitor C1. The SCR may be a 106 series equivalent.
This circuit generates a PWM control signal using TTL logic. We found this configuration in a 1976...
This circuit, found in EDN documentation from the 90's, implements a clamp without signal...
September 2017 - Arduino Lucky Shield shields containing a 5 V OMRON-g6RL relay, a Everylight...