Strip LEDs are available in different colours powered by direct current (DC) source. These LEDs are available as surface mount devices with...
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Multi-Color LED
How many different conditions do you reckon may be signalled with just one LED? Two, maybe three? Using this simple circuit, a lot more! Adm...
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8 Stage LED VU Meter
The circuit below uses two quad voltage comparators (LM339) to illuminate a series of 8 LEDs indicating volume level. Each of the 8 comparat...
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Regulated 24 Watt Broad Spectrum LED
This project involves constructing an energy efficient broad spectrum LED lamp system. The lamp is useful for indoor reflective room lightin...
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Simple LED Bike Light
On my mountain bike I always used to have one of those well-known flashing LED lights from the high street shop. These often gave me trouble...
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