Re: "Flyback" Driver - Why are my MOSFETS hot? (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Fri, 2 Jul 2004 23:50:09 -0500
From: Dr. Resonance <resonance@xxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: "Flyback" Driver - Why are my MOSFETS hot? (fwd)


I recall he said the snubber was also getting very hot --- this could be an
indication of the problem.  A scope would test the validity of this theory
in short order.

Dr. Resonance
>
>
>
> ---------- Forwarded message ----------
> Date: Sat, 03 Jul 2004 10:21:00 +0930
> From: Matthew Smith <matt@xxxxxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: Re: "Flyback" Driver - Why are my MOSFETS hot? (fwd)
>
> Dr. Resonance wrote:
> > If your system is out of resonance with the flyback's normal resonance
> > point, then the energy in the primary has no where to go, thus creating
> > extra heat and other losses.
>
> Matthew replies:
>
> Thanks for your reply.  Shouldn't the snubber take care of that energy
though?
>
> Cheers
>
> M
>
> --
> Matthew Smith
> Kadina Business Consultancy
> South Australia
>
>
>