LED & Light circuit diagrams

Programmable LED Flashers

Two simple, wide supply range operating circuits.

LED or Lamp Pulser

Astonishing effect. 4.5V supply

230Vac Lamp Toggle Switch

Compact, transformerless circuitry. No relays employed

Electronic Candle Blow Out

LED or bulb switch off with a puff. Funny gadget - 3V Battery supply.

Triac Based Light Controller

This project is intended for controlling mains powered disco lighting, although there are many other possible uses for controlling almost any mains appliance. It will control five seperate channels at up to 3 Amp per channel. This could be increased by designing another PCB with wider tracks than the PCB included with this design. I could have used relays to control my lights, but triacs seemed like a more sensible solution as they react quicker and are totally silent as they contain no mechanical parts.

Halloween Flashing-eyes Badge

Two-LED-eyes follow the rhythm of music or speech. 3V Battery-operated device suitable for pins or badges

Nocturnal Animals Whisker

A low-rate flashing lamp drives away undesired visitors Automatic on-off operation