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Old 12-09-06, 02:50 PM   #8
northwind
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Quote:
Originally Posted by Baph
Add a resistor, drop the voltage, dim the bulb. I'd rather not use a resistor with a normal bulb (non-LED) setup to be honest, but each to their own.
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Um, yep, I wouldn't either. Unless it was a very low resistance . But this topic is about LED indicators

The wiki link you sent isn't really what's being done here- that's just a regular LED circuit, which will always contain a resistor in series, you're not messing with that. Those do need to be of the right resistance to avoid problems What you're doing here, though, is adding a resistor in parallel with the LED instead- the original resistor is untouched.



I actually got this a wee bit wrong up the page- the relay doesn't pick up resistance, it picks up the current draw- what you're doing is increasing the draw by increasing the resistance. The means is the same but the purpose isn't quite how I had it, my bad.
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