Author Topic: Reverse polarity protection  (Read 311 times)


  • Elite SSGuitarist
  • *****
  • Posts: 110
  • Chip Points: 7
    • View Profile
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.
 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?

Sent from my SM-G930F using Tapatalk


  • SSGuitar Regular
  • ***
  • Posts: 11
  • Chip Points: 0
    • View Profile
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.


* User Controls

Welcome, Guest. Please login or register.
Did you miss your activation email?

* Sponsors