Hey I Just saw the video and I'm very glad that u recorded It for me! I didn't even know before that u recorded It bc I was very busy, that's why I'm leaving a comment so late. Thank u so much for the video bro!!!
No problem brother. Let me know if you have any questions, I'll help you. Just always remember the number one rule, be extra careful, double and triple check all your connections. This is a dangerous circuit, but you can have fun with it as long as you're careful.
Wow! You are amazingly a very kind person as so far I remember a certain Giovanni Lombardo ask you you give him a circuit diagram on what you did previously & I can see you haven't forgotten about him. Indeed you do also explain everything very clearly too. I do like your videos too. Keep it up with the great works on those famous Tesla coils. Thanks
Hi john I just made a ZVS myself that has almost the same schematic, and I was wondering what kind of voltage doubler you used in your extreme flyback video with those giant caps. Thanks and you helped me alot 🤣.
That's a good question. I've got it all the way up to 800kHz by connecting the caps in series to raise the frequency. But I've never tried going any higher.
@@szekerespista3758 no problem my friend. If I may, I would suggest that for high frequency, switch the inductor cores out and use ferrite instead of powdered iron. It'll do better for higher frequencies.
I am currently building the zvs circuit the diagram i am using only has 1 inductor not two what is the difference?? And can you also tell e what is the exact value of the capacitor? Also can I use the inductors present on these old computer power supply ?
Great question! Ok so the difference between the two is not the absence of the other inductor, but it's location. The primary windings beyond the center tap of your fly back is actually your second inductor. I've simply built the second inductor into the driver itself, so it'll only require two connection points on the fly back primary As opposed to three. As for the cap values, that can be a little tricky. In theory the current would increase indefinitely without the capacitors until the mosfets are destroyed. So it's capacitance actually sets a limit on the current. The greater the capacitance, the higher the current can rise. I prefer not to go higher than 1uf because the current can burn your fly back in a heartbeat if the mosfets can withstand it. So it's always a good idea to check the datasheet on the mosfets and see what their current capabilities are. So if the drain current is only 20 amps then your cap bank shouldn't exceed .25uf. These particular mosfets can withstand 94 amps so my cap bank can go to 1uf without any problems.
Bro! I forgot to ask you! Have you ever tried a rotary spark gap with it to make a comparison of the output compared to the static spark gap? I don't know myself if a rotary spark gap will bring greater changes but I've seen on other videos that they work just great. Do try it if you have some spare time & then do a video on the rotary type of spark gap you've decided. Thanks
I've tried it and it worked really well. I have to re-tune the coil to get more performance out of it but it's really cool. The sound changes and everything. I'm currently building a better one because it was made out of a grinding wheel and it's not safe. The centrifugal force of the bolts can break the wheel so the next one will be made from nylon.
@@hadzrinekosni4530 no problem my friend. I'll help you the best I can. Have you seen Ludic science? He does a whole video showing how to connect flybacks together with a ferrite isolation transformer. He uses an old flyback core. Wound a primary that's connected to your zvs, then two secondaries. Each secondary goes to a flyback.
Vds of 200V might be bit low for ZVS circuit. The resonance can boost the voltage way above the input voltage and also inductive spiking. nice explanation btw
Yes you're correct if you plan on inputting more than 36 volts. When I tested these, they started failing at 36 volts with 470 ohm input resistors. I also tested irfp460n which are rated at 500 volts, and those started failing at 48 volts, and irfp260n which were the same as the IRFP90N20D, about 36 volts they start getting hot and turning into these really cool high tech smoke emitting mosfets. 🙂
Big, loud, and awesome!
Hey I Just saw the video and I'm very glad that u recorded It for me! I didn't even know before that u recorded It bc I was very busy, that's why I'm leaving a comment so late. Thank u so much for the video bro!!!
No problem brother. Let me know if you have any questions, I'll help you. Just always remember the number one rule, be extra careful, double and triple check all your connections. This is a dangerous circuit, but you can have fun with it as long as you're careful.
Wow! You are amazingly a very kind person as so far I remember a certain Giovanni Lombardo ask you you give him a circuit diagram on what you did previously & I can see you haven't forgotten about him. Indeed you do also explain everything very clearly too. I do like your videos too. Keep it up with the great works on those famous Tesla coils. Thanks
Where do you get the ferrite rings? Brilliant!
I thought fan capacitors were 60 hz? Nice explanation.
Hi john I just made a ZVS myself that has almost the same schematic, and I was wondering what kind of voltage doubler you used in your extreme flyback video with those giant caps. Thanks and you helped me alot 🤣.
You ur vediowes are so informative keep it up bro
Thank you sir, glad you liked it. I'm currently building a bigger driver with a new tesla coil. I'll upload the video soon.
Excuse me, are there 25 turns of enameled wire in each toroid? I don't have a way to measure the inductance (henries)
Yes that's about right.
is that 100mh micro or milli henry
Отличная работа 👍
thanks
John.
Can this circuit work at 1 -3 MHZ ,if you change the value of the capacitors?
I don’t know if the fast diodes and the Fets can work at this frequency.
That's a good question. I've got it all the way up to 800kHz by connecting the caps in series to raise the frequency. But I've never tried going any higher.
@@johnruscigno5738 Thank you for your answer!
@@szekerespista3758 no problem my friend. If I may, I would suggest that for high frequency, switch the inductor cores out and use ferrite instead of powdered iron. It'll do better for higher frequencies.
I am currently building the zvs circuit the diagram i am using only has 1 inductor not two what is the difference?? And can you also tell e what is the exact value of the capacitor? Also can I use the inductors present on these old computer power supply ?
Great question! Ok so the difference between the two is not the absence of the other inductor, but it's location. The primary windings beyond the center tap of your fly back is actually your second inductor. I've simply built the second inductor into the driver itself, so it'll only require two connection points on the fly back primary As opposed to three. As for the cap values, that can be a little tricky. In theory the current would increase indefinitely without the capacitors until the mosfets are destroyed. So it's capacitance actually sets a limit on the current. The greater the capacitance, the higher the current can rise. I prefer not to go higher than 1uf because the current can burn your fly back in a heartbeat if the mosfets can withstand it. So it's always a good idea to check the datasheet on the mosfets and see what their current capabilities are. So if the drain current is only 20 amps then your cap bank shouldn't exceed .25uf. These particular mosfets can withstand 94 amps so my cap bank can go to 1uf without any problems.
@@johnruscigno5738 Thanks a lot! 😃for taking time to tell me all this. It will greatly help me in building my ZVS driver.
Bro! I forgot to ask you! Have you ever tried a rotary spark gap with it to make a comparison of the output compared to the static spark gap? I don't know myself if a rotary spark gap will bring greater changes but I've seen on other videos that they work just great. Do try it if you have some spare time & then do a video on the rotary type of spark gap you've decided. Thanks
I've tried it and it worked really well. I have to re-tune the coil to get more performance out of it but it's really cool. The sound changes and everything. I'm currently building a better one because it was made out of a grinding wheel and it's not safe. The centrifugal force of the bolts can break the wheel so the next one will be made from nylon.
Can this zvs setup drive double fbt ? ..if cant, please give the diagrams.. your super sparks is In my top ranking 👍
Yes sir. Just connect the primaries in parellel.
@@johnruscigno5738 tqvm sir for your info n respon.
@@hadzrinekosni4530 no problem my friend. I'll help you the best I can. Have you seen Ludic science? He does a whole video showing how to connect flybacks together with a ferrite isolation transformer. He uses an old flyback core. Wound a primary that's connected to your zvs, then two secondaries. Each secondary goes to a flyback.
Vds of 200V might be bit low for ZVS circuit. The resonance can boost the voltage way above the input voltage and also inductive spiking. nice explanation btw
Yes you're correct if you plan on inputting more than 36 volts. When I tested these, they started failing at 36 volts with 470 ohm input resistors. I also tested irfp460n which are rated at 500 volts, and those started failing at 48 volts, and irfp260n which were the same as the IRFP90N20D, about 36 volts they start getting hot and turning into these really cool high tech smoke emitting mosfets. 🙂