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I am sorry I forgot to mention it. I had changed the reference to the Voltage divider to Earth instead of return(when switch on or neutral) which is used to
measure the voltage of AC line that is coming through the board to load when the triac is on.
Presently it is running with LED not...
Yes I did try with the value of capacitor as you told along with the resistor I had of 47 ohm since I could not get the 100 ohm resistor and the LED flickering got stopped. And now it completely stays
off. But When I checked the voltage across the gate and earth still the optotriac was giving...
So how does a company design their board. Do they buy this standard and design accordingly or could you explain the procedure that a company follows
while designing a board.
I did look into datasheet to see how is leakage current affecting the triac. I have a snubber across the triac as could be seen in the schematic I gave across phase and return. Please do clarify the same.
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Okay. Do you have the specs of the incandescent lamp used for the...
I will purchase the resistor of that rating and try and report to you. Thanks for the advice. Could you possibly tell me what could be reason behind the leakage current. And is there anyway to reroute it to either earth or Neutral(I have the earth shorted to the digital ground of microcontroller).
I had made a circuit to turn load on and off using a TRIAC.
It all worked fine until the load was resistive or inductive.
As soon as I connected a LED lamp to the circuit all problems started coming in to the circuit. When the TRIAC was off. The LED lamp started to flash every few seconds with...
I had designed a power supply using PI expert.I designed the same using the PI expert tool for 5V, 0.8 A configuration.
I have attached the Schematic from PI expert, Eagle Schematic of the same, PCB design.
Only difference in circuit made is the ceramic capacitor attached to BP/M pin is 0.1uf...
As I was testing the health of TRIAC by making it to switch a bulb by raw breadboard type circuit. Then found the triac was damaged and when I replaced the TRIAC the circuit worked back fine.
Hi again, I will try again with a RC filter in the next testing PCB as you said. I will test the coupler as you said. But could you tell me how to properly the test the TRIAC...Above is the method I tested it. Could you correct me and point me to the correct testing method.
Yeah I understand that. Could you give your diagnostics of what could be wrong in this situation. May it be something that I have done wrong or is it something like a bad component..I wanted to know what all are the probable situation that may cause this problem.
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Hi, I used...
Oh K may be I would have done it wrong. Here is what I basically did. Could you please inspect the following procedure.
I tested the switching DC side upto MOC using powering only the dc part first. Since it was working.
next I tried to test if the triac was switching on or not.
Instead of...
Hi all,
Is there need to have a resistor to ground from the gate of TRIAC in the schematic as some people have suggested in forums for more stability.
I tried the circuit for random phase triggering configuration according to above schematic but found that when tested for DC load of low...
Thanks so much for the information. It was very helpful.Is it industrial practice to follow this method you have mentioned or is there other ways to do it. If I have to test it empirically..what should be my acceptable goals should be if the load is not defined and the triac I am making my...
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