12 volt convert 2 volt led light

121

01:43:14

12 volt dc convert 2 volt dc led light use resistor 1 k

published 9 years ago

Bushmills

9 years ago

Are you aware that more than 80% of the power drawn from power supply is dissipated as heat by the resistor, and only less than 20% are used by the LED?

Robert_Kidd

9 years ago

Reduce resistor to 500 Ohm to give LED it correct 20mA, unless you are intentionally keeping it low.

Benb0456

9 years ago

This circuit can overheat

vishalwap7

9 years ago

Robert_Kidd

9 years ago

Why can this circuit 'overheat'? You have a 12V supply and 0.01A current making a total power of 0.12W !! The resistor power is approx 10V x 0.01A = 0.1W. Quick, call the fire brigade!!

Robert_Kidd

9 years ago

@vishalwap7 your circuit is perfectly OK as it is. You could increase LED brightness by reducing resistor value as I mentioned earlier :-)

Bushmills

9 years ago

A way to increase efficiency is by putting several LEDs in series, and lower the resistor value accordingly.

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