10A Variac Soft Starter

I recently purchased a used 10A Carroll & Meynell Variac from eBay for use in the lab, however the variac often caused the 32A B-curve MCB in the consumer unit to trip due to the high inrush current of the variac core. To prevent this from happening and to add a few additional features I […]
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Build a 2.3″ 6 Digit LED Clock

In this video, Steve builds a 6 digit LED clock from some Kingbright SA23-12SRWA 7 segment displays and a Microchip PIC18F26K20 microcontroller. You can build one for yourself with the schematics posted under my LED clock page http://www.youtube.com/watch?v=Ov27rac0tP0
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Designing a Constant Current LED Driver – Part 2

In this video Steve interfaces the DC-DC converter circuit with a Microchip dsPIC33FJ16GS502 microcontroller to create a microcontroller-based constant current LED driver. The dsPIC33FJ16GS502 microcontroller has four analogue comparators which allow expandability to 4 independent constant current channels. http://www.youtube.com/watch?v=Jcble4aiNlw
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