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/diy/ - Do It Yourself

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>> No.1871679 [View]
File: 892 KB, 832x364, lampcontrol.png [View same] [iqdb] [saucenao] [google]
1871679

I don't know anything about thyristors and I'm confused by this circuit.
1. Wouldn't the thyristor get triggered into conduction only during the positive half-wave of the AC line?
2. How exactly would the microcontroller know the exact moment (zero crossings) to trigger the thyristor to control the light bulb brightness?

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