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 Post subject: LM386 J5 connection
PostPosted: 28 Jun 2018, 01:02 
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Joined: 23 Oct 2013, 00:36
Posts: 6
I just bought pcb and components on Ebay. There is a J5 connection on the pcb..What kind of function do this J5 have?.


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 Post subject: Re: LM386 J5 connection
PostPosted: 28 Jun 2018, 12:24 
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Joined: 28 May 2008, 21:53
Posts: 4568
Location: Winnipeg, CANADA
J1 and J5 are connected. J1 is the 3.5 mm stereo jack which is wired for mono operation since the LM386 is a single channel amp chip. If you don't want to use a jack for the input, you can wire your inputs to J5. On J5, pin 1 is the input signal and pin 2 is the signal ground.

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 Post subject: Re: LM386 J5 connection
PostPosted: 09 Jul 2018, 09:43 
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Joined: 02 Jul 2018, 05:42
Posts: 1
Which of those two option would you suggest, Gio? Which one is more repliable in the long run?


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 Post subject: Re: LM386 J5 connection
PostPosted: 09 Jul 2018, 22:00 
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Joined: 26 Dec 2016, 03:46
Posts: 152
Location: Bayarea
Whatever the one is more convenient.


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 Post subject: Re: LM386 J5 connection
PostPosted: 10 Jul 2018, 10:49 
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Joined: 09 Oct 2012, 19:43
Posts: 308
Location: Vancouver Canada
J1 is the audio input jack. J5 is a different (probably two solder joints/points for connecting wires to the board.) They both go to the same place it just gives you more than just the audio jack to get signals into the boards amplifier.

J3 is the power input jack if you want to have power connection removable. If you would rather connect wires directly to the board then use J2 which is wired in parallel with J3. Same connection just a different way of making the connection.


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 Post subject: Re: LM386 J5 connection
PostPosted: 10 Jul 2018, 19:38 
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Joined: 26 Dec 2016, 03:46
Posts: 152
Location: Bayarea
J1 and J5 are both input as shown in the schematic. I have no idea what connector is what. You can just connect the source to either one that is more convenient for you.


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