Technical, Techniques, Hints, and Tips > The "Black Arts!" ( Electrics & Electronics )
Dimming LED
Skimmer Fan:
Is it possible to dim an LED by just putting a higher value resistor in place of the standard resistor.
White LED on 12 volts with 470 ohm resistor is what normally use.
White LED on 12 volts with 1.5k resistor is what I am thinking of f using. Will this have any detrimental effect on the LED or circuit.
LJ Crew:
No, go ahead it won't hurt either the LED or another circuit. Normal LEDs run at below 20mA. 12 volts and 470 ohms is about 20mA and you could increase the resistor value until you can't see the light from the LED.
tigertiger:
I second that.
Brian60:
From experience you will need a bigger value than 1.5k to make any appreciable difference in the luminocity
Skimmer Fan:
Thank you for your comments.
I will acquire some higher value resistors and experiment, after your advice that I should not be damaging anything by putting a larger than normal resistor in,
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