Mains Light dimmer

A circuit that can automatically turn off the headlights or lamps of a vehicle after a preset time. This light switching circuit is constructed using a 555 timer integrated circuit (IC). The described circuit utilizes the 555 timer IC in...

Before proceeding with the implementation, it is important to ensure that the output brightness is adequate for a stop and tail-light application. The light output may vary based on the tail-light lens and reflector assembly, so caution should be...

The transmission distance can be significantly increased by replacing the transmitter's red LED with an inexpensive red laser diode obtained from a dollar store. The circuit design strikes a balance between laser brightness and audio quality and volume. This...

The Darlington circuit is a double-clamp touch switch circuit that features a touch-sensitive sheet and operates with a 20V AC mains supply through an isolated power transformer, ensuring relative safety. Once powered, a 20V optional AC transformer (T) is...

This circuit operates on alternating two colors using a 2-color LED with a built-in 3-pin configuration. It alternates the glow of each LED until the base, switching between two colors. The circuit comprises a NAND gate IC, two 10-counter...

A closed light switch S allows 220V AC to flow through resistors RP1 and RP2, charging capacitor C2. When the voltage across C2 reaches the breakover voltage of the diac VD, the diac and triac activate sequentially, energizing the...