Re: Interupting xenon flash current ?

John Larkin wrote:

The IGBT itself will limit the current. And waste some energy, I
assume.

This isn't a case of "current limit". It actually does indeed interrupt the flash tube current abruptly.

That's the only way that modern flash can work predictably, controllably and repeatably.

I looked into this (for a non-commercial application) some time back and couldn't find any off the shelf (one piece) semis that could do it. I couldn't find any specific data on the way it was done, so suspected they used two devices, an SCR as per normal, and a more traditional semi switch to turn it off after the predetermined delay.
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Relevant Pages

  • Re: Interupting xenon flash current ?
    ... flash tube current abruptly. ... That's the only way that modern flash can work predictably, ... two devices, an SCR as per normal, and a more traditional semi switch to turn ... converter, trigger stuff, IGBT gate driver with timing. ...
    (sci.electronics.design)
  • Re: Interupting xenon flash current ?
    ... flash tube current abruptly. ... two devices, an SCR as per normal, and a more traditional semi switch to turn ... converter, trigger stuff, IGBT gate driver with timing. ... In looking at the data sheet and their demo board info, I see they are dealing with an 80A pulse with only 1J ...
    (sci.electronics.design)