This Twilight switch circuit activates a light, a lamp, a motor, etc., at the time of sunset and performs the reverse process at dawn.

This is an ideal circuit for activating a security light that must be on all night.

Flashing LED bike lights circuit

If you’re a cycling fan and you like biking, night and day, this Flashing LED bike lights circuit is very useful, as it will cause you to be easily visible

A Time Delay Light switch circuit

This circuit is useful to illuminate locations where a light source of low power is needed. A closet, a car trunk, are good examples.

Police Style Strobe Light Circuit.

This circuit shows the familiar lights which are used on police cars. It uses a 555 timer as a clock for the 4017B decade counter, two transistors and twelve LEDs

Light-Emitting diode connected to 120/240 VAC Caution: This circuit is connected directly to the power line (120 / 240 volts AC), so you must take special care to test it. This circuit shows one or two LEDs (Light-Emitting Diode) directly connected to the outlet (120 VAC or 240 VAC). The reduction of the AC input voltage to […]