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I removed the 330 Ohms resistor and replaced 220 Ohms with 1K/1W => Nothing improved.
Then I shorted the legs of the LED => Now the triac is performing fine with external triggering though not working with Arduino. I will debug the code to see if it works.
Thank you very much for your precious...
I cannot follow you here, are you suggesting to use a bridge rectifier chip or you want me to replace the 1N4007s with smaller diodes like 1N4148?
By the way, the zero-crossing detection is working fine in my circuit. I suspect something fishy going on around my MOC3020 and the triac. I will...
Thanks Brian, for your input.
I will follow your first point and see if the things improve.
For the second point, I would say that I have seen many circuits with similar design. Just for your reference, see below a ready-made compact module from China. Even it has an LED for zero-crossing with...
Hi
Recently working on an Arduino based AC heater controller, I have been facing some unusual problems with MOC3020 and triacs BTA136 or BTA41.
Attached, please find the schematic and the completed PCB.
Initially, for testing, I connected an incandescent bulb across heater terminals and...
I do have similar specs of some other for my reference. As I mentioned earlier, I want to be sure that the pre-punched alloy sheet which I bought for a specific amperage is actually rated for those amperes.
So basically, the circuit which I am looking for would be having 2 parts:
a) a...
Yes, I want to be sure of the ratings of the pre-trimmed alloy sheets each for the designated fuse ratings.
Okay, now I got some idea of the holding and the tripping current. But that brings me to a question: Is the rated current same as trip current current?
As far as my required circuit is...
Yes.
What I get is, the slower we ramp the current, the accurate will be the reading.
But I couldn't get "....tripping current would be 1.5 - 2 times the nominal current"
Actually, I need to verify the ampere ratings of the trimmed zinc sheets before using them in fuse blade assembling.
Thanks for your input.
The tips, I was expecting were how to measure, hold and display (analog or digital) ampere reading. As soon as the fuse will blow, the amperes will drop to zero immediately.
Hi
I need to build a 12V circuit which can determine the amperage of various automotive fuses.
In other words, a circuit which can show at what amperes the fuse blows out.
Any starting point tips, shall be appreciated.
Yes, I was referring to Rds(on) value in Ohms or mOhms.
Thanks for your input.
And sorry to CHEMELC for my un-clear question.
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I was deceived by the rating on the speaker used it is "8 Ohms - 20W".
But with 2.4W or 4.8W, could the sound be excruciating loud?
Hi
Attached is a circuit of car siren which produces ear piercing sound when powered on.
I am interested in the amplifier section of the circuit which is simple and cheap. I need to amplify simple tones with frequencies less than 1kHz. I tried the circuit as shown attached but wasn't...
The ELF file was generated by Flowcode 4 for AVR. The Flowcode compiler fails to generate HEX file. So I was trying to convert the ELF file to GEX in AVR Studio.
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