We found this circuit in a 1965 General Electric manual. The controlled load depends on the Triac and the 100 uF capacitor delay time.
This circuit is from 1983 documentation. The author shows us an experimental circuit of a siren...
This simple circuit indicates whether at a point in the wiring of a car 12 V is present. The clip...
This oscillator employs a Motorola operational amplifier common in the 70s. We can implement the...