Re: [TCML] Magnifier topics

[Steve Ward <steve.ward@xxxxxxxxx>]

Only with significant gate over-driving could you get more than the
published 350A peak.  Id check the Vce during the pulse to make sure the
device is not de-saturating, in which case it wont last long.

Steve

On Tue, Feb 16, 2010 at 12:15 PM, Finn Hammer <f-h@xxxx> wrote:

> Paul, Antonio, all,
>
> A closer look at IGBT`s revealed this little gem:
> http://ixdev.ixys.com/DataSheet/DS99978C(IXGF30N400).pdf<http://ixdev.ixys.com/DataSheet/DS99978C%28IXGF30N400%29.pdf>
> Good for 350A pulsed within 1mS, we could probably take it to 1000A in
> 6.6s.
> But why?
> In a coil the size of Antonio愀, if the primary coil is only 4 turns, but
> same geometry for equal coupling, resulting in 5.5焙 and a capacitor of 55nF
> the same primary frequency of around 288kHz would be achieved.
> With a voltage of 4kV, the primary current would land at 400A and it would
> process 220VA @500BPS.
> We must be able to get something usefull out of a coil with these numbers.
> Antonio:
> Primary resonates by itself at 288ish frequency, but this value is not one
> of the 3 frequencies you mention for the coil. Why not?
>
>
> Cheers, Finn Hammer
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