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Old 12-10-2012, 09:16 AM
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petriej petriej is offline
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Location: San Jose, CA
 
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Mein Auto: '99 M3 Cab & '05 X5 4.8is
Quote:
Originally Posted by johnf View Post
What you write may apply to the Z3 and Compact. A E36/2/4 dimmer unit, however, does use Pulse Width Modulation, but with a linear, ca. 20-100% dimming curve meant for incandescent lamps. To provide uniform and sufficient dimming, a PWM dimmer for LEDs needs a non-linear (exponential or square-law) dimming curve that ranges from nearly 0 to 100%. I couldn't find a suitable automotive LED dimmer when I looked a few years ago, and ended up designing one to dim a pair of 10 mA LEDs in series.

You face the same issue when you change the interior lights to LED. I square the linear, PWM, ramped lighting signal from the ZKE (and change, say, 10% on to 1% on) which seems to do the trick.
Cool! TIL...
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Quote:
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Jared, why don't you just put "It's Giubo" in your sig? Save a lot of typing.
Quote:
Originally Posted by e36 miguel View Post
this jared guy sounds intimidating lol.
2005 X5 4.8is Le Mans/Black/6spd Steptragic
1999 M3 Cabrio TiAg Metallic/Dove Grey/Black 5 Speed Manual
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1997 328iC Schwarz II/K/K 5MT SOLD 5/2012
2004 645Ci Mineral Silver Metallic/Black 6MT RIP 04/2011
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