Date: Mon, 5 Jul 2004 22:03:37 GMT
From: hohnospamlid.invalid (Goran Larsson)
Subject: Re: Led replacement bulbs

In article <9jjGc.27071$MB3.20235nospami_s04>, James Sweet <> wrote: > Better than using a resistor would be a chopper circuit to reduce the duty > cycle. Why is it better? * The chopper solution requires more parts and more parts means less reliability. * The power loss in the resistor (about 25W) is easily taken care of by attaching it to the large heatsink (the chassis of the car). * The wasted power is power that would have been used had the resistor not been used, so the rest of the car sees no difference. * Having a chopper pulsing 9 amps creates an low frequency AM transmitter that emits signals both through the air and through the 12V wires. What effect will that have to the electronics in the car? I like high tech solutions, but for this application I find that the power resistor is a better solution. -- G–ran Larsson

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