Polarity Protection Circuits
Hi,
I was wondering if anyone had any knowledge of polarity protection circuits? That is, a circuit that would protect a piece of equipment in the event that it were powered using the opposite polarity?
Tell you why I ask...
I use loads of guitar pedals in my recordings, and often run them from a couple of multivoltage psu's. These psu's have changable connectors and allow you to fit them at both polarities. The other day, I connected a pedal with the wrong polarity and was concerned that I might have damaged it. However, it all that happened was that the unit failied to operate. Once the correct polarity was supplied, it worked fine.
It was my understanding that supplying incorrect polarity would likely ruin a piece of equipment. But a friend suggested that the pieces of gear might have protection built into the design?
Knowing little about the design of these things, I wasnt sure if this were the case or not. Or more importantly, just how risky it is to accidentally connect to the wrong polarity?
What do you reckon lads?
Cheers,
TB