Stereo VU meter kit BUILD THREAD

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Joe Malone
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Re: Stereo VU meter kit BUILD THREAD

Post by Joe Malone »

mobtownstudios wrote:
Mon Apr 12, 2021 5:59 am
Joe Malone wrote:
Fri Apr 09, 2021 9:36 am
Hi Mat yes they look fine. Any 2 clear white 5mm led around 1000mcd or more will work in there with the 680R. Each led has about 2.5 to 3.5v across it. So voltage at terminals will be 5v to 7v as the 2 are in series. They maybe brighter or duller so RLamp can be changed afterwards to make brighter down to 470R or duller up to 2k. Mount them exactly the same way as they are in the back of the meters. They have a polarity which is easy to see internally in the led as they are clear.

Continuity testing doesn’t really work with the leds. If you tried the reversing of the lamp power wires with no luck then they will be dead. But they should have been very bright for a couple of seconds if they burnt out.
Thanks Joe!

New LEDs and fixing the resisters/diodes did the trick! Glowing wonderfully!

If I wanted to use 1 LED in each meter for a gentler glow would I have to do anything else other than that? Would I need a resister anywhere in the chain?


Screen Shot 2021-04-11 at 3.59.06 PM.png
Either make RLamp resistor larger in value to dim or add a resistor in series with one of the meter wires on each meter.

Going to 1 led will make it brighter and unbalance the backlight to one side.
Joe :-)
JLM Audio
Capturing Audio without Injury

mobtownstudios
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Re: Stereo VU meter kit BUILD THREAD

Post by mobtownstudios »

Perfect!

I put the 3k3 resistor in place of the 680 and it's working WAY better for me!

Thanks Joe!

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Joe Malone
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Re: Stereo VU meter kit BUILD THREAD

Post by Joe Malone »

mobtownstudios wrote:
Tue Apr 13, 2021 12:03 am
Perfect!

I put the 3k3 resistor in place of the 680 and it's working WAY better for me!

Thanks Joe!
Cool. Must be very high Mcd LED like 10000. More efficient less power needed :-)
Joe :-)
JLM Audio
Capturing Audio without Injury

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