Dual Flyback Transformers (DST)!

YES, it is possible to drive two diode split transformers in antiparallel mode. In the first part of this vid, you can see a single mode flyback, determinig the maximum strike length and the ignition point of arc (spacing on the sheet of paper in the background is 1cm).
The second part shows the same thing, but using two flybacks (dst) in antiparallel mode instead. The first one is generating a positive high voltage potential, the second one a negative high voltage potential.
As you can see, arc starting point of the second configuration is where the first one ended doing any arcs! Unfortunately there is quite a loss of efficiency in arcing due to the bad insultaion of coil number 2...
Conclusion: perhaps doubling the power supply (because you are now using 2 coils) and doing a better insulation should even give more arcing length;)

Category:

Science & Technology

Tags:

• HV
• plasma
• high-voltage
• flyback
• diode split
• transformer
• dst
• fh-deggendorf

[kitingboarding]

nice one. thats very handy. whats your input voltage?

[PraeMortem]

Input Voltage is about 48 volts and about 1.5 amps, but i think i will use 96 volts and about 5 amps in future;) Power2the people:D

[kitingboarding]

that very cool man, been trying two flybacks for a while with not much luck. can you do a cicuit diagram?

[PraeMortem]

It is a very simple trick;)

Of course any flyback can only do a positive high voltage output on its hv-terminal,...so you have to crosswire the outputs of both flybacks.

This means you should have two equal flybacks, both driven by the same circuit in "regular" mode (both wired parallel on their input pins).

Thus you get two flybacks working at the same time with same frequency, power rating and so on...

[PraeMortem]

To crosswire, you connect hv-terminal of flyback number 1 to ground pin of flyback number 2.

Your sparking happens now between HV-terminal of flyback number 2 and ground connection of flyback number one.

But notice, rewiring only with cut-off supply voltage, please;)

And, i got two flybacks with seperate hv-ground pin, meaning there are two pins for supply-voltage input, one hv-ground pin and of course the hv-terminal on the top side;) The sparking happens between hv-ground and hv-output.

[PraeMortem]

Sometimes, i think depending on the flyback modell, exchanging their positions in the circuit gave a better result.

[high1voltage1rules]

Holy hell that's loud lol wicked setup mate ;-)

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[jolo1691]

WTF.. turn the freq. up pls :D

[PhxSt0rmz]

You do still hook the primary (self-coiled) in parallel no matter what though, right?

Nice awaking video, big loud BEEEEEP! My flybacks are TCE and oddly they like high frequency, I'm talking ~200Khz = Best arc.