A doubt on my single transistor flyback driver

[pranavAppu]

I've been teying to build a simple flyback driver with a 2N3055 transistor using an input of a UPS battery but my transistor is failing. Now I've bought a 2N3055 HV2 transistor. Will it withstand?


This is my very first project..

*written by :PranavAppu/

[Benta]

You already asked about this design in another thread, and got a load of answers. Didn't you like them?

[SingedFingers]

Less turns on the base coil. 2-3 turns max or you'll break the transistor down instantly. Also stick a big 15W 10 ohm resistor in series with the supply until you get it working or it'll blow everything out in half a second flat. Also heatsink that transistor. I've built something pretty much identical that worked in the dark ages. They're not pretty but they work.

Also don't play with high voltages until you know what you are doing. You'll kill yourself or someone else.

Better design here that uses two primary coils and a feedback coil: http://ludens.cl/Electron/scope/scope.png