Question about LED voltage capacity

Test Electrix · 29th January 2010, 11:24 PM

Right I want to put an LED on an FX pedal using the Muzique method using DPDT, do I have to use an LED rated minimum for the supply voltage used? There's quite a big choice and I don't want to buy a pretty cool one then blow it... This is link (I just posted the .gif and it's too small to read):

http://www.muzique.com/schem/dpdt2.gif

godfrey · 29th January 2010, 11:56 PM

The resistor (10k in your attachment) limits the current through the LED to a safe value.
Depending on the supply voltage, you might want to change the resistor value to adjust the brightness.

btw: Normal LEDs are rated for max current, not voltage.
Some have built-in resistors, flasher circuits etc but I doubt you can hurt any of them with that circuit.

29th January 2010, 11:24 PM	#1
Test Electrix diyAudio Member Join Date: Mar 2009	Question about LED voltage capacity Right I want to put an LED on an FX pedal using the Muzique method using DPDT, do I have to use an LED rated minimum for the supply voltage used? There's quite a big choice and I don't want to buy a pretty cool one then blow it... This is link (I just posted the .gif and it's too small to read): http://www.muzique.com/schem/dpdt2.gif

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29th January 2010, 11:56 PM	#2
godfrey diyAudio Member Join Date: Nov 2009 Location: Cape Town	The resistor (10k in your attachment) limits the current through the LED to a safe value. Depending on the supply voltage, you might want to change the resistor value to adjust the brightness. btw: Normal LEDs are rated for max current, not voltage. Some have built-in resistors, flasher circuits etc but I doubt you can hurt any of them with that circuit.

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