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Dimitrij Klingbeil Dimitrij Klingbeil is offline
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Default Transformer shot! (was scope SMPS/ capacitor venting)

On 01.03.2016 00:21, Cursitor Doom wrote:
On Mon, 29 Feb 2016 21:47:38 +0100, Dimitrij Klingbeil wrote:

P.S.

There is a simple though unwritten rule about power supply
testing:


Oh, I just noticed you did in fact actually state it's an "unwritten
rule" - well my personal experience of searching on the subject can
certainly confirm that!


At least myself, I have not seen it being being explicitly explained or
written anywhere yet, but it's sort of "common knowledge" in a way...

Among engineers who design power supplies, this seems to be taken for
granted - too self-evident to warrant explanation apparently. Others,
among them the many who design low voltage circuits and prefer to buy
their power supplies off the shelf, rarely get to see switching nodes
driven with significant fractions of a kV with fast rise times. That
leaves their awareness of the "tricks of the trade" rather limited.

Power supply design is both a science and an art, and the power supply
"artists"' rites of initiation can sometimes involve strange things

Anyway, never fear, but always exercise logical thinking, conservative
judgement and be aware of side effects - that would be my advice here.

Dimitrij