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yeah, i just tried out the triac across 2 of the "high setting" welder primary wingdings (minimum is always on,, so theres only one manual switch now, and thats for medium Heat) its working brilliantly just tested it, now im just got to pay someone from peopleperhour to program the audrino to...
do i need phase control? i want to dim a welder transformer like the basic analog non-ardino curcuit i first posted, i have a triac being fired with zero crossing with my audrino and a HAA11A, with an ardrino interrupt at zero, a pot adds a delay, then it fires the triac. So can i just not put...
I just found this, do you think this is a viable solution, i already have an ardrino controlling a triac so this looks simple but will it work with a IRKT91/16? i see it says non sensitive SCR, and it shows just the gate pin, not the other two pins that are on the IRKT91
Line voltage compinsation, a CT feedback, current/voltage limiter, soft start. from what my research yielded is, most proper phase controll SCR driver's have zero cross DETECTION, a Pulse train transformer, and well that thing has a couple IC' s and looks like it has more going on then a MOC3032...
Hey guys got that Triac curcuit working great with a snuber for my fume extractor fan on my welding table, i have it hooked up to trigger with a reed switch so it speeds up when the welder is going. but now i want to make use of my IRKT91 back to back SCR module, i want a turn key solution this...
ok so if im understanding now, something like a moc3010 (non zero firing internally) can be triggered at any point of the wave like in
[image at www . circuitstoday . com/wp-content/uploads/2009/09/SCR-Pulse-Control-Circuit.jpg]
Now with a micro-controller my assumption is; when i add zero...
Yeah i have been at this all day, the circuit i'm now following is using the ardrino and the zero crossing (i accidentally bought 250v max optocoupers though i see its intended for 120v (the MOC3010) I want the MOC3020 i for 220..... mistakes always to be made. So im just playing around tonight...
so for my welder which draws 20 amps 220AC MAX your saying this is all i need to do is put that little chip in between L1 going to transformer and other pin to line, (opto isolate gate for safety), but with this system https://i.stack.imgur.com/QxcbW.jpg so with a (TRIAC) zero crossing happens...
if its 20amps at 400v isnt that only good to ~10 amps on 230v?
and would this one work well? + heat sink i assume
https://www.conrad.com/ce/en/product/151847/STMicroelectronics-BTA-41-600-B-TRIAC-Case-type-TOP-3-IGT-Max-50-mA-IT-RMS-40-A-Peak-reverse-voltage-UDRM-600-V
Ok i think i got that, but can i find a 220v triac that can do 20 amps AC? sounds like i see videos on youtube of people with 600w triacs controlling motors in a way i understand, the gate firing theory you explained well so i got that. Triac it is if i can find one
if its of any concern its for a Old ESAB arc welder (non SCR) if i has the skills required, i would figure out how to do all these angle controls and stuff, but at end of the day im noob so current control is the best ill likely achieve, if i can get a full wave i wont lose any output (if i was...
thank you, and i was aware, i seen with aurdino people use LED opto isolaters making it 100% safe, so i think with carfull planning ill be safe, thanl you very kindly for the concern and time you took to relize that theres this hazard and i was wondering the gate driver in link so looks isolated...
I was wondering if any of you could help me understand a bit more how the IRKT 91 12 "back to back SCR" can be driven in a cost effective way. I have found this circuit on a closed tread on here:
I'm not understanding all of what im reading, i just watched some 1 hour explanation to zero...
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