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Project:AC Intensity Controller: Difference between revisions
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To detect the zero-crossing a zener diode (actually a diode and 3 LEDs) converts the AC waveform in to a square wave, which is passed in to an optoisolator (e.g. the CNY17-3) before being passed to the microcontroller. | To detect the zero-crossing a zener diode (actually a diode and 3 LEDs) converts the AC waveform in to a square wave, which is passed in to an optoisolator (e.g. the CNY17-3) before being passed to the microcontroller. | ||
An otpocoupler (e.g. the K3020P) and TRIAC (e.g. BTB06-600T) is used to switch the circuit output. | An otpocoupler (e.g. the K3020P) and TRIAC (e.g. the BTB06-600T) is used to switch the circuit output. | ||
In my prototype I have been using an Arduino Uno, but intend to replace this with a [[Project:Nanode|Nanode]] once the PCB is complete and it is ready for enclosure. | In my prototype I have been using an Arduino Uno, but intend to replace this with a [[Project:Nanode|Nanode]] once the PCB is complete and it is ready for enclosure. | ||
