Lights & LED circuits

Lights & LED

Lights & LED circuits


14 Watt Compact Fluorescent Electronic Ballast
This circuit came from a 14 Watt Commercial Electric spiral bulb from Home Depot. In fact, I drew it in that way because it was layed out very well, so much credit should go to Sam Goldwasser.
3-6V Xenon Strobe Light
This circuit used to come as a kit from a surplus supplier, but probably isn't available anymore. It shows a few novel concepts such as using a 555 as a pulse width modulator (PWM), and series/parallel camera flash transformers.
40W Magnetic Ballast With Electronic Ignition
Here is the schematic of another fluorescent ballast circuit from a lamp I acquired along with the 80W electronic ballast. It actually contains a pair of the circuit in the diagram, one for each bulb.
LED Traffic Lights
The LED traffic Light circuit controls 6 LEDs (red, yellow and green) for both north/south directions and east/west directions.
Photo Electric Street Light
Photo Electric Street Light which receives input from a cadmium sulfide photo cell and controls a relay that can be used to switch off and on a street lamp at dawn and dusk.

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