5 May
2021
5 May
'21
7:46 p.m.
Dr. Erik Baigar via cctalk wrote:
Additionally, output devices with really fast switching times can
trigger reflections back from the load, and these can potentially expose
these devices to very high reflected voltages, which will trigger their
breakdown.? I've seen it happen in oil field equipment, with IGBTs.
Carlos.
I've heard
that.? But why?? It's not like the electronics we're
talking about actually runs on AC.
(a) Input filters often contain caps...
https://uk.tdk-lambda.com/content/faq/130796117766108286_FilterFAQ_how%20Im…
With 50Hz or 60Hz they create a little current which does not hurt.
Applying a square wave of 15kHz has harmonics up to 100kHz and more.
That means, that the current in these is more than 100 times bigger -
BAM! 