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Recent content by tradinup

  1. T

    LED Dimmer

    https://www.electro-tech-online.com/custompdfs/2011/12/lm338.pdf As noted in prior posts, this data sheet gives good examples.
  2. T

    LED Dimmer

    I'm going to try 15W 100 ohm reostat
  3. T

    LED Dimmer

    So could I use the 338 as a current regulator to do the job?
  4. T

    LED Dimmer

    I'm trying to vary the voltage (6v - 10v) on several leds (about 13 watts). I've used an LM338T with 150 ohm R1 and a 5K linear pot R2. The power supply is 12vdc 5 amp. Under no load the regulator does exactly as I want (0v - to 10.5v), however when I connect the load the max voltage drops to...
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