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Re: Recent s.s.t.c work
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- Subject: Re: Recent s.s.t.c work
- From: "Tesla list" <tesla@xxxxxxxxxx>
- Date: Sat, 15 Oct 2005 21:43:36 -0600
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Original poster: Steve Conner <steve@xxxxxxxxxxxx>
Interesting...what's the squiggle, I wonder?
Well, the primary current was flowing in the anti-parallel diodes
from the switching instant up until the squiggle. So I'm guessing the
squiggle is the recovery transient of the diodes, as the current
stops flowing in the diodes and starts flowing in the IGBTs. Unless
it's an IGBT switching when it shouldn't and causing arm
shoot-through. To be more certain I'd want to check the gate voltage
of one IGBT alongside the bottom trace.
I'm impressed by the output from your scope camera :-o
Steve Conner
http://www.scopeboy.com/