AC lights dimmer with triac
Operation of the circuit be Lamp L1 is adjusted by adjusting the light of VR1. This will serve to control the speed of charging of C1, Because triac will work.
When C1 has charged to the voltage at the triac work.When adjusting the VR1 C1 will charge as little faster lamp is lit.If the adjustment of VR1 C1 will charge very slowly.The little light bulb. Because the triac does not work over the triac during the work.The light bulb will dim down by adjusting VR1.The R1 is placed for protection VR1 prevent damage.The R2, C2 is used to eliminate signal disturbance. Both produced and external circuit.
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230V AC dimmer
Description:
A reliable and efficient all-around performer. I bought the kit because it didn’t cost me much more than the components were worth and I also got a nice professional-made PCB inside.
As you can see, this is a tried-and-true diac & triac combination that offers both simplicity and high performance. With a load up to 3.5A, the power rating is 750W at 230V. A heat sink on the triac is a must!
Note: for 110V operation, add a 220k resistor in parallel with the 470k pot. No other modification is necessary. But since the maximum allowed current is still 3.5A, the highest possible power output will drop to 380W.
Read More Source:http://www.geocities.com/tomzi.geo/
Thank you.
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