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Super ac dimmer using ic-555& triac
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![BTA12/600 [4021] : Sunrom Electronics/Technologies](https://i2.wp.com/www.sunrom.com/media/content/250/ssr-schematic.gif)
BTA12/600 [4021] : Sunrom Electronics/Technologies
TRIAC won't turn on - Electrical Engineering Stack Exchange
Super AC dimmer using IC-555& triac | ElecCircuit.com