corona problems
teslacoolguy, Sun Mar 30 2008, 03:30AMi hooked up an older ac flyback to a 555 driver and i heard tons of corona hissing but i couldent find were it was coming from so i turned out the lights and ran it again and i notised that there was corona coming off the primary coil i had wound and it started to arc to the core. i immidiately shut it off so no damadge was done to anything but anyway how can i stop this from happening and why is this happening in the first place.
Re: corona problems
Andyman, Sun Mar 30 2008, 03:53AM
Well, the primary probably wasn't the thing that was arcing, it was the secondary. The secondary might have arced through its insulation and onto the core and then to the primary wire/circuitry.
Try just wrapping a bunch of electrical tape around the core and then put the winding on top of that.
Andyman, Sun Mar 30 2008, 03:53AM
Well, the primary probably wasn't the thing that was arcing, it was the secondary. The secondary might have arced through its insulation and onto the core and then to the primary wire/circuitry.
Try just wrapping a bunch of electrical tape around the core and then put the winding on top of that.
Re: corona problems
teslacoolguy, Sun Mar 30 2008, 03:54PM
That can't be the problem because when i measure resistence between the hv out and either side of the core i dident get any readings so that cannot be the problem.
teslacoolguy, Sun Mar 30 2008, 03:54PM
That can't be the problem because when i measure resistence between the hv out and either side of the core i dident get any readings so that cannot be the problem.
Re: corona problems
Kizmo, Sun Mar 30 2008, 04:32PM
If you measure resistance between two points in air which are 1cm apart from each other, you won't get reading with DMM but somehow arc from your flyback can make it easily :)
Kizmo, Sun Mar 30 2008, 04:32PM
If you measure resistance between two points in air which are 1cm apart from each other, you won't get reading with DMM but somehow arc from your flyback can make it easily :)
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