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OK. Thank you for the tips. I already had used your other solution from 3 years ago with TRIAC and zero cross detection circuits but as you said the software become complicated. Doing the PWM in DC way like with LEDs is easier regarding software.
OK. Thank you for the tips. I already had used your other solution from 3 years ago using TRIAC and zero cross detection circuit but as you said the software become complicated. Doing the PWM in DC way like with LEDs become the things more easier.
Very good instructable. It's perfect for a project I'm working on control dimmer for incandescent bulbs. As I intend use this solution to also turn on and off bulbs in a dinner/living rooms I had modified a little bit the circuit to do not keep the transistor inside the optocoupler always in saturation state. I attached an image with the change in the circuit. Do you think it's ok or not? In my country the AC power is 120V/60Hz. Substitute the 100K resistor by one around 50K is enough? Thanks in advance for any comment.
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