Current Controlled LED Dimmer. October 11, 2013 by Jim Keith ... Measured current was 1A @ 12V for an input power of 12W. Since my wall wart power supply was rated for 0.8A, I pared it down to 240 ...

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This is the LED dimmer box I got from the Amazon seller. According to them, the dimmer box will run from 12V to 24VDC flawlessly and has an 8A (maximum) load managing capacity. An agile examination.