Found in a 1968 Motorola manual, this DC circuit uses components from the era. The circuit fires in microsecond times. The Q3 transistor must be according to the controlled load.
This heartbeat sensor circuit was found in the July 1992 issue of Radio Electronics magazine. The...
We found this circuit in the 1982 SGS integrated circuit manual. The integrated circuit is not...
This TTL pulse stretcher or stretcher was found in a 90's EDN. The time constant R x C1 determines...