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Old 6th November 2012, 07:51 PM   #11
Mooly is offline Mooly  United Kingdom
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Old 7th November 2012, 01:06 PM   #12
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Originally Posted by Rundmaus View Post

it will not kill any human, but the back EMF created even by a 5V small-signal relay coil is high enough to kill LEDs, transistors or other semiconductor parts - probably also true for amplifier ICs!

Mmm, audio amplifier normally has high value caps in parallel that overdampes the spike. I believe can kill a led , but I doubt can kill an audio amplifier.
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