[sdiy] Power Supply questionsss

[harry]

Yes, correct. Current Limited Supplies prevent greed (and meltdown...)

The technique is to sense current with a series resistor, then shut down
if
a certain voltage drop is exceeded.

Check data sheets for LM317 and LM337 for ways to do it easily.

H^) harry

Chromatest Pantsmaker wrote:

> 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)

--
Jihad Terrorism Conspiracy New World Order
Revolution Black Helicopters Freedom of
Speech First Amendment Rights: Carnivore Bait
go ahead and READ my e-mail I have nothing to
hide... how about YOU ???