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44 Comments

Sunrise simulator

  By electrobob April 7, 2010 February 8, 2017 Projects

A DIY sunrise simulator using a high power light, for a soft wake up during the winter time. Continue reading

Tagged   alarm, circuit, clock, dimmer, dusk, light, microcontroller, radio, schematic, sunrise, sunrise simulator, triac
7 Comments

Linear LED power supplies

  By electrobob March 15, 2010 February 8, 2017 Ideas and Articles

How to drive LEDs? WIth constant current supplies, of course. Continue reading

Tagged   constant, current, drop, led, leds, linear, LM317, resistor, supply, transistor, voltage
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