[sdiy] Power Supply questionsss

[harry]

Yes... in the industrial supply market we design circuits that shout
"turn it off turn it off turn it OFF !!!!"

Usually we are shut down in 10uS... current may peak at around
10KA... (for a 1KA device) and we might even survive it.

OTOH the customer will yell "Turn it back on..." and probably
kill it on the third or fourth try...  ;^P

H^) harry

Theo wrote:

> Current regulated PSU are mainly used for testing and repair.
> It is a way to make sure a circuit with a bug doesn't get fried by drawing a
> large (too much) current.
>
> Don't know for sure but there may also be some industrial high power
> applications for current regulated PSUs.
> Ping Harry?, any shocking/sparkling revelations on the subject?
>
> Theo
>
> From: Chromatest Pantsmaker <chromatest.pantsmaker at verizon.net>
>
> > since everybody else is asking questions about power supplies, I just
> > recently came across something new to me.
> > "current limited/regulated PSU"
> >
> > I understand voltage regulated, but I thought that circuits would only
> > draw the amount of current they needed.  THe only thing that I can
> > think of is that the circuit must be greedy and use as much current as
> > it can get, and therefor, the only way to regulate it is at the PSU.
> >
> > And then....  What is a Current limited psu?  How does a person add
> > current limiting circuitry to an existing psu? any tips along these
> > lines?
> > thanks to all great mighty PSU gurus!
> > -ben (in amsterdam)  (Amsterdam, NY that is)

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