Found in the 1974 Ferranti transistor manual, this Schmitt trigger circuit uses general-purpose transistors of the 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...