This sequential relay actuation system circuit for traffic lights was found in Electronics Now from the 1990s. Relays are sensitive types of low current coil.
With the components indicated, the circuit oscillates at 20 MHz. The coils and capacitors can be...
The trigger shown in the figure, built around a 4093 can generate pulses that reach 1 hour with a...
This circuit was obtained in an old American documentation, remembering that the 566 is the double...