You are correct, in the first schematic the coils are mislabeled, the feedback smaller coil should go to the base, and not the primary as is shown. HI, impressive results with a simple circuit.
I may use a mosfet instead. One question , for m more stable and higher voltages at lower current, is this better than a ZVS? Alternatively, BUX22s can be used too. Anonymous, Jozef, if you have possibility, you can take an old CRT TV or monitor and desolder a transistor that drive the flyback transformer.
I think it has to do with the amplification h21e factor or base current.. On the other hand, if you built yourself a self oscillating flyback driver straight off mains, those HOTs would work fine. A "Mazilli ZVS" or Royer oscillator can handle a few hundred watts easily and will give you a relatively high output current, but a little less open-circuit voltage.
The "ideal" choice in terms of reliability, power and flexibility would be a bridge of power transistors switched by an external oscillator. This will involve a bit higher complexity and cost, but there are plenty of functional circuits online to follow.
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Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site. If you need assistance, please send an email to forum at 4hv dot org. Another Simple flyback driver circuit. Sat Mar 28 , pm. A couple of days ago I posted a question about a light switch dimmer driving a flyback transformer.
Teodor Zafiroski. Ash Small. Usually around 20 to 30kHz. What ever you use as your negative terminal, it will get hot, very hot! The arc will melt any thin wire you use into little metal balls and steal will just fly everywhere, which is cool and dangerous! If anyone has a good explnation why the negative terminal get so hot and the positive terminal remains fairly cool, I'd like to know.. This is because when the arc got inside the bulb, the gas inside heats up, causing it to expand and escaping through the hole thus creating a "plasma thrower".
I have not tried this yet, but there is a revision of the ZVS driver by Andrinerii. The fun does not stop there, if you are hungry for more bigger, hotter, and beastly arcs, a few changes to your ZVS driver should be made to handle higher input voltages. Change the 12v zenner diode to 15v zenner diode. Increase the number of windings on your flyback transformer.
Increase the value of the inductor. I heard that some people had operated their ZVS driver at voltages over , just imagine how massive their arcs must be! Also, this ZVS driver circuit does not have be used just for the flyback transformer, you can replace it for use a different transformer to charge up your large capacitor banks for coilguns, railguns, etc.
It might be even possible to do induction heating with this ZVS driver circuit Question 3 months ago. I was thinking of using it with 12V PC source But it does not work for me, with the laboratory source it reports a high current consumption. Question 1 year ago on Step 7. Answer 8 months ago.
Any higher voltages will blow up the mosfet. Question 9 months ago. Reply 2 years ago. Zeners have a defined breakdown at a reversed polarity, anything from 2. In some applications they help speed switching time by limiting the charge on the gate. Reply 11 months ago. Question 1 year ago. Were can I find you? Email johndear gmail. I will be more than happy to answer your questions. Did you make this project? Share it with us! I Made It! Remote Control Light Switch by alanmerritt in Arduino.
BentleyS2 Question 1 year ago. Answer Upvote. Rileyd5 6 years ago. Reply Upvote. RedstoneM 6 years ago on Introduction. Samiran 6 years ago on Introduction. I liked this project. Will build it. Thanks Alex, and keep up the good work.
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