Post Project 56: Electrically Safe LED-to-Lamp Converter

April 17, 2015 | 13:42
Post Project 56: Electrically Safe LED-to-Lamp Converter
Post Project 56: Electrically Safe LED-to-Lamp Converter
Have you ever thought of amplifying LED light? Here we do it, with just about any low-current LED driving signal at the input and a 100-watt incandescent bulb as very bright “output device”.
Compared to an ordinary lamp most traditional LEDs are weak when it comes to light emission. That’s okay for many purposes, but sometimes you want a big lamp instead of a measly LED.

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This “light booster” as you might call it is used for switching a mains powered incan- descent lamp on and off by means of a tiny LED in an optoisolator available at the input of the circuit. This LED should take the place of the LED you want to “beef up” in terms of light emission. The optoisolator affords the required electrical isolation between your pre- cious driver circuit on the one side (micro- controller-based, RPi? ARM? Arduino?), and the lamp and lamp control circuit at the other side, the latter sitting dangerously at mains potential. The power of the lamp to be con- trolled should be in the range 15-100 watts.


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