Solid State Guitar Amp Forum | DIY Guitar Amplifiers

Solid State Amplifiers => Amplifier Discussion => Topic started by: flester on February 07, 2019, 05:08:25 AM

Title: Reverse polarity protection
Post by: flester 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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Title: Re: Reverse polarity protection
Post by: 66cccfff 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.