Circuit of a compact and true solid-state automatic lawn light is described here. The circuit can be used to switch on incandescent garden light bulbs at desk and switch off them at dawn. A 10 mm ...

It’s a wonderful thing to see a clever hack repair instead of disposing of a product. The best repair approach is finding exact replacement components, but sometimes exact components can’t be sourced ...

Cities and towns worldwide areconsidering and installing LEDstreetlights to help save electric energy,reduce costs, protect the environment,and improve lighting for their citizens.Despite this trend, ...

National Semiconductor’s constant-current controller enables off-line, uniform, flicker-free dimming of high-brightness light-emitting diodes (LEDs) with a conventional TRIode for Alternating Current ...

Pre-regulators at the input of power supplies minimize losses. This version uses optical feedback from an LED and light-dependent resistor instead of the more common optically isolated TRIACs. Fig 1.