Adding resistance to negative leg of LED

Started by gmr1, April 29, 2009, 07:23:05 AM

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gmr1

I've seen some switch diagrams that do this. Any disadvantages to this? If I'm using 8.2K when wiring using the positive side, when I switch it to the negative, should it remain the same? I like the idea, as it allows me to add the LED resistor to the switch, making it easier to solder...

~arph


gmr1


John Lyons

Yeah, either side is fine.
I've made pedals and after I have everything put together
wanted to change the LED brightness ti match two LEDs
I put a little resistance on the neg side and that balanced the
brightness. You can use resistance on either side.

John
Basic Audio Pedals
www.basicaudio.net/

Nitefly182

Yup its about the voltage flowing through the led, not just into it.

R.G.

Quote from: Nitefly182 on April 29, 2009, 12:50:39 PM
Yup its about the voltage flowing through the led, not just into it.
It's about the *current* flowing through the LED.

A hard to believe axiom is that the currents and voltages of any two electronic components in series is not affected by the relative order of the two parts.
R.G.

In response to the questions in the forum - PCB Layout for Musical Effects is available from The Book Patch. Search "PCB Layout" and it ought to appear.