Cobra 29 ltd side mic needs a dim able led. Seems like I've seen it done before. Anyone know how? As of know, the led is soldered in where the original lamp was. Led works but can't dim. Buddy says it's too bright and would like it to dim with dim switch like the channel does.
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Meter LED on a dimmer
- Thread starter jetman
- Start date
Check the voltages on the dimmer switch in dim/high with your multimeter. Then you will need to find the resistor for the led in the higher voltage mode of the switch by using this calculator:
LED calculator for single LEDs
Your white led should have a forward voltage of 3.3v and use 20mA current; all you have to do is read the voltage from the hot lead on the dim/high switch and plug that value into the calculator along with the forward voltage and mA value. Once you find out what value of resistor you need by using the calculator, just solder/shrink wrap it in series with either lead of the led.
That should do it; that's all there is to it.
LED calculator for single LEDs
Your white led should have a forward voltage of 3.3v and use 20mA current; all you have to do is read the voltage from the hot lead on the dim/high switch and plug that value into the calculator along with the forward voltage and mA value. Once you find out what value of resistor you need by using the calculator, just solder/shrink wrap it in series with either lead of the led.
That should do it; that's all there is to it.
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