ir remote circuit

Posted on Feb 4, 2014

This is a simple schematic which can be assembled to control a lamp with a Sony TV remote control. Circuit uses a PWM signal connected to photocoupler which isolate the power part from microcontroller. Power part has very interesting solution on how halogen lamp is driven because works in DC and a Zero-crossing detection of the AC mains is not req

ir remote circuit
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uired. This solution it is not very efficient but it is less noisy as a triac one. For power supply I have used a Sony Ericsson mobile phone charger with 10 turns additionally coil in secundary winding. The teletext buttons are used for control: red for reduce light, green for turn on, yellow for increase light and blue for turn off the light.

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