2n3055 flyback transformer driver for beginners

Step 10 Troubleshooting

Problem?

Ok so you have made the circuit and it either does not work or it does not work very well.

• If nothing happens and you cannot hear any high pitched noise from the flyback transformer then try reversing the connections to the primary and feedback coils, if you still get nothing try just changing the connections on one of the coils. Usually this resolves that issue.

• If you have tried that and still nothing then you should check the circuit and make sure all connections are secure and nothing is shorting out. Sometimes people will forget to remove enough enamel on the magnet wire primary and feedback coils and there will be no electrical connection being made.

• If it works but the arc is small try reversing both the primary and feedback coil connections. Remember that 2cm is the maximum arc length you are going to get out of this driver, and 1cm may also be the maximum on some flybacks.

Comments

[Aj96]

I am getting a high pitch noise from the flyback transformer, but i am not getting any arc from it, any advice on what to do?

[Alex1M6]

Try switching the coil connections until you get the right combination, a squealing noise means it is oscillating ok but you have the polarity wrong.