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LED and light circuit diagrams

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Dancing LEDs
Dancing LEDs
November 11, 2010

The basic circuit illuminates up to ten LEDs in sequence, following the rhythm of music or speech picked-up by a small microphone. The expanded version can drive up to ten strips, formed by up to... [more]

LED Chaser
LED Chaser
October 31, 2010

This schematic is version of a simple 10 LED chaser. There is no 555 timer used because at my local electronics store they are over $4 Cdn. Instead, an oscillator made up of two sections... [more]

LED or Lamp Flasher
LED or Lamp Flasher
October 29, 2010

Minimum parts counting Designed for 3V battery operation [more]

LEDs or Lamps Sequencer
LEDs or Lamps Sequencer
October 29, 2010

The purpose of this circuit was to create a ring in which LEDs or Lamps illuminate sequentially. Its main feature is a high versatility: you can build a loop containing any number of LEDs or... [more]

LED or Lamp Pulser
LED or Lamp Pulser
October 27, 2010

This circuit operates a LED in pulsing mode, i.e. the LED goes from off state, lights up gradually, then dims gradually, etc. [more]

LED Torch
LED Torch
October 27, 2010

A common problem with small torches is the short life-span both of the batteries and the bulb. The average incandescent torch, for instance, consumes around 2 Watts. The LED Torch in Fig. 1 consumes just... [more]

Instrument panel lamp dimmer control
Instrument panel lamp dimmer control
October 27, 2010

This circuit uses an MC3392 low side protected switch and an MC1455 timing circuit to form an automotive instrumentation panel lamp dimmer control. The brightness of incandescent lamps can be varied by Pulse Width Modulating... [more]

Dome Lamp Dimmer
Dome Lamp Dimmer
October 16, 2010

There are times when a little light inside the car would greatly assist one of the passengers but the dome light is too bright for safe driving. [more]

Adjustable Strobe Light
Adjustable Strobe Light
October 15, 2010

This one uses a much more powerful "horse shoe" Xenon tube which produces more light. You can also control the flash rate up to about 20Hz. Do not look directly at the flash tube when... [more]

Knightrider lights for model cars
Knightrider lights for model cars
October 15, 2010

This simple circuit drives 6 LEDs in 'Knightrider scanner mode'. Power consumption depends mainly on the type of LEDs used if you use a 7555 (555 CMOS version). [more]



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