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January 25, 2020, 03:51:44 AM

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Author Topic: Reverse polarity protection  (Read 484 times)

flester

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Reverse polarity protection
« on: February 07, 2019, 05:08:25 AM »
I neglected to add reverse protection to my LM386 amp and broke. It is basically the Little Gem/Smokey amp.
https://goo.gl/images/3dqb9b
 It powers on but no output. I am checking all the caps and the IC.
Anything else I should check?
What type of diode should I (have) use(ed) for reverse polarity?

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66cccfff

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Re: Reverse polarity protection
« Reply #1 on: February 08, 2019, 05:19:18 AM »
Quoting from Youtuber ElectroBoom, you need a FULL BRIDGE RECTIFIER!……no, a single puny diode (1n4007) would be ok.