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Registered Member #5208
Joined: Thu Jun 07 2012, 06:12PM
Location:
Posts: 86
Oh, well, but these arcs were insane :). Hey Dri0m, I can't get torroid ferrite, but I have broken flyback core. I was thinking that it could work similar as your inductor. I'm posting the pic, please tell me what you think
Registered Member #4497
Joined: Thu Apr 19 2012, 12:53PM
Location: Behind you
Posts: 62
zippotix wrote ...
Oh, well, but these arcs were insane :). Hey Dri0m, I can't get torroid ferrite, but I have broken flyback core. I was thinking that it could work similar as your inductor. I'm posting the pic, please tell me what you think
You can use any ferrite core, but idk how many turns, i think it should be >50 turns. i don't have any free DST ferrite, so i can't measure it.
Registered Member #5208
Joined: Thu Jun 07 2012, 06:12PM
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Posts: 86
Nevermind, I assembled the zvs as on the circuit, but I'm sure I did something wrong. All it gives is slight humming and when I touch the HV ground pin it sparks with barely visible very small "arc". Guess I'm not cut out for electronics ;), I give up.
Nevermind, I assembled the zvs as on the circuit, but I'm sure I did something wrong. All it gives is slight humming and when I touch the HV ground pin it sparks with barely visible very small "arc". Guess I'm not cut out for electronics ;), I give up.
Don't give up just try again it onec took me 4 hours to find a faulty trimmer but that's no reason to give up Btw sounds like its working maby there's not enough power how many primary turns are you using? Also I get 1mm arks when I fry the transformer but that seems unlikely in your case since you haven't had it running yet but try changing it anyway maby the tv you got it from had a bad flyback
Registered Member #5208
Joined: Thu Jun 07 2012, 06:12PM
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Posts: 86
Destroyer of mosfets, thanks, I'm gonna give it another shot. I dismantled the whole thing and will start from the begining. I tested flyback with SMPS, and it works like nothing happened. I'm certain I connected the mosfets correctly, but messed something up with 4007's and zeners. Maybe it's like that cause I plugged 11VAC in there, and it runs on DC only? Oh, and inductor (self wound 25 turns, toroid from PSU) gets very hot after a while of "running". Primary on flyback is 6+6turns. Oh, and flyback was bought new at the local RTV shop :).
Registered Member #5208
Joined: Thu Jun 07 2012, 06:12PM
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Posts: 86
Ok, I've got it to work last week. At 36V it really kicks a$$, but overheats a bit, I'll just get better heatsink. But I'm still curious about the original question. I tried adding a .68uF cap to the halogen transformer output and it didn't affected the HV output. Maybe a smaller capacity capacitor would do better? What do you guys think?
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SMPS Flyback question
