Dr_Doggy
Well-Known Member
recently i pulled my zvs driver off the shelf, it is based on this model:
**broken link removed**
the only exception is that i put in 450v 40 amp mosfets, but is on the bench supply
12vdc, 7amps max, but i have variac along with doubler & rectifier circuit in waiting.
and want to add a relay to control supply power to L1, as i have found without it connected
the driver goes in to oscillation without the high current, which could come in handy.
i was wondering if i could clip a chip on the bases of the mosfets that would tell
me what my oscillation frequency is, maybe i can compare frequency shifts with core materials
would the toshiba74hc4060 ripple counter circuit be the rite path, or maybe there is something simpler,
like the opposite to a vco?
so first, in the original circuit it was rated for 12-36v,i am just wondering what my new
max voltage would be, mostly im concerned with my zener diodes(should i upgrade them too?)
more than current limitations, ie wires, supply,ect
second, the schematics i followed had this attachment to L1 for audio:
**broken link removed**
I wonder if i should stick to this path or switch up to the sg3535an used by KV here:
https://www.electro-tech-online.com/attachments/plasma-speaker-jpg.75710/
i initially used a 0.1mH inductor for L1, for now, but with the audio interface i wonder if i should go out and buy a transformer, or maybe wind one, and which values i should consider.
third, in the photos is my progress with my coils, the first one is the smallest, it idles at about 1.2amp draw from supply
(plus 0.5amp for cooling fan) and jumps up another amp when screwdriver is inside coil and heated past 100 degrees in just a few seconds, any smaller coils and the oscillation would break down, now with my final inductor which i am building now, as in the last photo, i am introducing a toroid to isolate the work coil,
i just wonder if i switch my secondary design to a small Tesla coil would the zvs tune in automatically, it is probabally smartest to switch up to a tesla coil, but i just wonder with the tuneing I will still need sparkgap and flyback but it will still sing rite? also I wonder since i will need to ground to AC outlet, what is a safe power limit?
Now i seem to have a little problem, where i had initially used flyback transformer, but in doing so grounded the wrong pin causing a 15 amp surge and smoking the flyback, which is why i steped back to the zvs, to test the driver, plus i had several other flybacks on the shelf which seem to be dead aswell. i have even tried winding myown primary, lots of swing
on the bases, but no spark at the output, even before primary broke down. mean while the driver survived all of the surges and stayed cool though the whole thing, what would be a ez replacement to the flyback transformer?, since crt's arent seen at side of roads anymore..
but I also wonder what other cool attachments this driver could pump!?
simple answers pls! not too much need for detail, just direction!
**broken link removed**
the only exception is that i put in 450v 40 amp mosfets, but is on the bench supply
12vdc, 7amps max, but i have variac along with doubler & rectifier circuit in waiting.
and want to add a relay to control supply power to L1, as i have found without it connected
the driver goes in to oscillation without the high current, which could come in handy.
i was wondering if i could clip a chip on the bases of the mosfets that would tell
me what my oscillation frequency is, maybe i can compare frequency shifts with core materials
would the toshiba74hc4060 ripple counter circuit be the rite path, or maybe there is something simpler,
like the opposite to a vco?
so first, in the original circuit it was rated for 12-36v,i am just wondering what my new
max voltage would be, mostly im concerned with my zener diodes(should i upgrade them too?)
more than current limitations, ie wires, supply,ect
second, the schematics i followed had this attachment to L1 for audio:
**broken link removed**
I wonder if i should stick to this path or switch up to the sg3535an used by KV here:
https://www.electro-tech-online.com/attachments/plasma-speaker-jpg.75710/
i initially used a 0.1mH inductor for L1, for now, but with the audio interface i wonder if i should go out and buy a transformer, or maybe wind one, and which values i should consider.
third, in the photos is my progress with my coils, the first one is the smallest, it idles at about 1.2amp draw from supply
(plus 0.5amp for cooling fan) and jumps up another amp when screwdriver is inside coil and heated past 100 degrees in just a few seconds, any smaller coils and the oscillation would break down, now with my final inductor which i am building now, as in the last photo, i am introducing a toroid to isolate the work coil,
i just wonder if i switch my secondary design to a small Tesla coil would the zvs tune in automatically, it is probabally smartest to switch up to a tesla coil, but i just wonder with the tuneing I will still need sparkgap and flyback but it will still sing rite? also I wonder since i will need to ground to AC outlet, what is a safe power limit?
Now i seem to have a little problem, where i had initially used flyback transformer, but in doing so grounded the wrong pin causing a 15 amp surge and smoking the flyback, which is why i steped back to the zvs, to test the driver, plus i had several other flybacks on the shelf which seem to be dead aswell. i have even tried winding myown primary, lots of swing
on the bases, but no spark at the output, even before primary broke down. mean while the driver survived all of the surges and stayed cool though the whole thing, what would be a ez replacement to the flyback transformer?, since crt's arent seen at side of roads anymore..
but I also wonder what other cool attachments this driver could pump!?
simple answers pls! not too much need for detail, just direction!