I have LED tube which is 230 V AC dimmable. I want to develop a circuit for dimming using triac and potentiometer. Can anyone suggest me the best reliable circuit
Im not sure this is very practical, without adding in a more complex current limiting circuit the triac will just cause the LEDs to flash at 50Hz which is very annoying to the eyes, as it is JUST perceptible.
[/QUOTE
I am ready to add capacitor / resistor but the circuit should be reliable and i don't want to use any controller
Can you share the schematic for reference?Did a video about dimming non-dimmable LED's using a single incandescent bulb on the same circuit. In the basement I have a similar arrangement where I have four LED can lights and a single incandescent bulb on the same switched circuit. Though the basement isn't set up for dimming, it has a motion detector that switches the lights on. Without the incandescent, the LED's never shut off completely, and they sometimes flicker. Having the incandescent in circuit - they have worked just fine for the last five years.
Here's the video on dimming LED's with a single incandescent in circuit.
Please refer me any schematic for better understanding and developingPerhaps a large capacitor could smooth things out
There is no schematic to share.Can you share the schematic for reference?
You would be simulating a PWM Power Supply. They don't have to switch on and off at 27 Hz, you can switch them MUCH faster, far beyond the ability to perceive them being on and off. This gives LED brightness an unnatural linearity to them. Un natural because as you show, they depend on current, not voltage. But PWM can dim an LED. I've done it. Many have done it.The only way to reliably control an LED brightness is to either switch them off and on very fast, but this usually tends to be perceivable, or to current limit them.
by Duane Benson
by Aaron Carman
by Jake Hertz
by Aaron Carman