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  • Zaragesh commented on diy_bloke's instructable Arduino controlled light dimmer1 month ago
    Arduino controlled light dimmer

    Hi to everyone,I built this circuit because I was interested like many in controlling a 230 V AC Motor Fan.First built for simple loads like a light bulb worked well and than for complex loads (inductive) like a motor. So I used the circuit with the snubber. Works well for i think 10 minutes than it starts to burn ;). Better said the 180 Ohm Resistor in the snubber circuit is to small and it will catch fire. I haven't done any calculations for the snubber yet but i will keep it up to date and try a different resistor. Just wanted to warn people and I really recommend a heatsink for the Triac. And I used an analogPin instead of the digital interrupt (got problems with it do not know why, but works well with analog Pin).So I will make an update in the next few weeks for the snubber.Anywa...see more »Hi to everyone,I built this circuit because I was interested like many in controlling a 230 V AC Motor Fan.First built for simple loads like a light bulb worked well and than for complex loads (inductive) like a motor. So I used the circuit with the snubber. Works well for i think 10 minutes than it starts to burn ;). Better said the 180 Ohm Resistor in the snubber circuit is to small and it will catch fire. I haven't done any calculations for the snubber yet but i will keep it up to date and try a different resistor. Just wanted to warn people and I really recommend a heatsink for the Triac. And I used an analogPin instead of the digital interrupt (got problems with it do not know why, but works well with analog Pin).So I will make an update in the next few weeks for the snubber.Anyway great circuit :)

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