RE: TC Spark Energy... THOR vs OLTC ][ + question for Terry

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Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi Marco,

At 12:58 AM 3/18/2004, you wrote:
>....
>
>But now one question. You are opening the IGBTs after the first notch.
>Have you ever tried to quench after it (2nd, 3th, etc. notch)? Did you
>experience a derated performance?
>
>Terry, if I recall you can/could do this test. What is/was the result?
>
>Best Regards

1st notch quenching always worked far better for me.  Best to trap the 
energy in the secondary to find it's own way out, rather than let it back 
into the high loss primary circuit.

Cheers,

         Terry