Hi,
I'd like to experiment with some pulsed power applications (ie. capacitor bank 1.2 kV, 1000 uF discharged via a solid state switch through an inductor). Most circuits I have seen seem to use an SCR. However I'd like to be able to switch the thing off (before the capacitor has fully discharged). Would this be easier with a GTO thyristor or an IGBT?
Thanks,
colin
PS. No comments necessary regarding dangers of high vltages and inductive kick-back - thanks :)
Colin Howarth wrote in news:elvgu8$tfd$03$ snipped-for-privacy@news.t- online.com:
IGBT I think. They're used in laser flash lamp supplies, I think they can be used as part of a pulse shaping circuit, being able to switch off the supply as you're wanting to do.
IGBT's work well. An output inductor can be useful to limit the di/dt in case of short circuit on the output; this gives time to measure the output current and disable the drive to the IGBT when the current gets to max allowable value; otherwise the peak power dissipation can QUICKLY destroy the IGBT
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