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.
The purpose of this PLL circuit that we found in the November 1986 Radio Electronics magazine is...
This circuit is intended for detecting 3 levels power grid voltage, and it can be adapted to...
This circuit, which provides a power of up to 3.5 W, can be supplied with voltages from 9 to 14 V....