[sdiy] circuit protection question

[Justin Owen]

With or without the polyfuse - is there any advantage to running a reverse rectifier diode to ground/antiparallel over running it in series with the supply line and are you just running one diode on one (positive?) rail or one on each rail?

Thanks.

Justin

  

-----Original Message-----
From: David G. Dixon [dixon at interchange.ubc.ca]
Received: 14.12.2010 06:42:53
To: 'synth-diy DIY'
Subject: [sdiy] circuit protection question

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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