[sdiy] circuit protection question

[Tim Parkhurst]

The real solution (or at least part of a real solution) would be to
use a keyed, polarized connector that cannot be plugged in backwards
or out of position. That wouldn't prevent all power supply-related
mishaps, but it seems to me that it would prevent most of them.
There's GOT to be something a little more bullet-proof out there. Just
a thot.

Tim (call me MISTER Power Supply Mishap) Servo
-- 
"Sire, the church of God is an anvil that has worn out many hammers."
- H.L. Hastings



On Mon, Dec 13, 2010 at 10:40 PM, David G. Dixon
<dixon at interchange.ubc.ca> wrote:
> Here's a question for the gurus:
>
> Do you generally bother with circuit protection, specifically against power
> rail reversal?
>
> If so, which technique do you typically use?
>
> I'm thinking: power rail, to polyfuse, to reverse rectifier diode (e.g.,
> 1N4001) to ground, to circuit.  The diode will protect the circuit while the
> polyfuse trips.  Does this seem like overkill?
>
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