2N3055 FLYBACK DRIVER

This site uses Akismet to reduce spam. Thanks, I meant I have the diode in place and know it is to protect the transistor but what is the small capacitor for? I have the diode but not the capacitor. What you can do is provide some isolation between the pins with pieces of plastic and super glue. Andrew Villalpando December 24, at The transistor heats up to scorching temperatures within minutes despite the fan. Hello, I believe your schematic is wrong:

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The diode and capacitors protects the transistor from high voltage transients that will eventually kill your transistor.

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. Is there anything I could tune in this circuit or should I instead just go ahead to the next level and build a Mazzilli driver?

The small TO transistor must be efficiently heat-sinked — yet is does not appear to warm up at 5 amps and 18v. Now the arc between the pins is continuous, thick and white, which renders the thing unusable.

June 16, at Flbyack 17, at July 17, at This site uses cookies. A separate gate driving voltage is properly needed to avoid dissipating too much energy in resistors and zener diodes. November 26, at I have mine set up with the diode but without the capacitor and it works fine.

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2n flyback driver | Simple 2n transistor based flyba… | Flickr

At voltages higher than 12 VDC input, the components will dissipate a lot of heat and the 2n transistor is most flybwck to burn as it is not rated for more than 15 A and it has to be derated even further for case temperatures above 25 o C.

Your email address will not be published. This site uses Akismet to reduce spam. Different capacitors were tried, ranging from 10 nF to nF, nF was found to work the best for my flyback transformer.

2n3055 flyback driver

Thank you for flyvack quick response! What you can do is provide some isolation between the pins with pieces of plastic and super glue. Actually I have four of those server power supplies for some 48V madness…. Flybsck 19, at July 6, at To find out more, including how to control cookies, see here: 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?

I wonder what protection this could be and how to work around it.

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Also, I think my flyback is done for… The high voltage negative pin started arcing to the one next to it. Why would it change all of a sudden unless it had somehow failed internally?

July 7, at With the output coupled through a home made salt water capacitor it was possible to have loud and very bright sparks. Hello, I believe your schematic is wrong: Hi neukyhm The capacitor will absorb high voltage spikes that could come from inductive kick back from the transformer. July 14, at This is a low current high voltage power supply, what kind of lamp do you want to supply from such a high voltage?

2n flyback driver | Kaizer Power Electronics

Sorry, your blog cannot share posts by email. Hey Vignesh I do not have any such simulation model.

Perhaps a huge capacitor? Hi William What kind of transformer are you trying to drive? I cut off the problematic pin and put a blob of hot-melt glue on it, but it still arcs.