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Reply to "Another LED constant lighting question for passenger cars . . ."

TedW posted:

...Am wondering however what component would be changed to dim the lighting slightly more.  Realizing of course that leds are either on or off at the minimum so adjustments any lower may not be possible.  Thx in advance for the thoughts.

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TedW, are you saying you did set the adjustment to minimum...but you want that minimum value to be dimmer?

If so, you need to increase the value of R2 (the adjustment component itself).  It is presently 200 ohms.  You can get the same component in 500 or 1000 Ohms.  This would reduce the minimum brightness proportionally compared to the present 200 Ohms....so about 2-1/2 times dimmer (using 500) to 5 times dimmer (using 1000).  Changing R2 does not affect maximum brightness value.  So if this is what you're after, one of us can come up with an exact part number to order from DigiKey or wherever.

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