Notify me of new posts by email. What input voltage have you used? I wonder what protection this could be and how to work around it. June 20, at This driver is among the simplest, with just six components it will be able of delivering high voltage with a strong enough current for various experiments.

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2n flyback driver | Kaizer Power Electronics

The diode and capacitors protects the transistor from high voltage transients that will eventually kill your transistor. October 10, at The capacitor will absorb most of the high voltage 2m3055 occuring doing switching of the load. The transistor used in this circuit should not have a voltage rating higher than V, due to the higher base current needed of higher voltage rated transistors, this might in some cases cause problems where the self-resonating circuit can no longer drive the transistor.

Now the arc between the pins is continuous, thick and white, which renders the thing unusable. It sounds like a over voltage protection, when you suddenly remove the heavy load the voltage rises faster than the supply can regulate and it shuts itself down.

Is fllyback a flyback? I finally bothered 2n33055 set up a couple of server power supplies in series to try this circuit at 24V.

I attached 10w 10ohm resistor in 5v line, and DC devices are working fine. For the main cap I used a uF Cap.

The best way is to use a defined set of spheres, knowing the air pressure and humidity and measure the spark length between them, this way it properly the easiest 2n055 most accurate way for amateurs to measure high voltage with out expensive equipment. As for the wire windings I used 20AWG hookup wire. Andrew Villalpando December 24, at By continuing to use this website, you agree to their use.

Is it a iron core?

Thanks, I meant I have the diode in place and know it is to protect the transistor but what is the small flybback for? Hi neukyhm The capacitor will absorb high voltage spikes that could come from inductive kick back from the transformer. This site uses Akismet to reduce spam. You could try to add a few more feedback windings and not have more than 8 primary windings to get a higher current running in the primary to get a bigger output.

I have the diode but not the capacitor.

2n3055 flyback driver

June 8, flygack Hey Austin As you say yourself, the direction of the winding, or as its called the phasing of the feedback coil could be opposit of the primary coil and thus be driving it degrees out of phase, try to switch the feedback connections around. My power sources include a dying 9v battery, 2n305 Li ion, and a high current laptop charger 18v, 4. Hi Ram This is a low current high voltage power supply, what kind of lamp do you want to supply from such a high voltage?

Saattvik December 25, at Is it the transistors or what? You best bet for isolation is to use super glue, it makes strong and deep joints in 2b3055 existing plastic or epoxy. The new sweet spot seems to be 10 primary turns and 4 feedback turns.

Working with electricity is dangerous, all information found on my site is for educational purpose and I accept no responsibility for others actions using the information found on this site.

Proudly powered by WordPress. July 7, at April 24, at Keeping the electrodes just far enough apart for no flybakc to jump, a beautiful corona breakout is visible.

I only used a jumper to turn it on in the ATX plug. You flyback transformer is properly fine, arcing between the bottom pins is normal as we tend to over drive these small transformers by a lot. You could also varnish it or if possible, mold it all shut in epoxy.