Let’s talk LM386... Part 3 W/ Stripboard Dirt box Layout

Let’s talk LM386, The continuing saga...

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Comment by Southern Ray on October 17, 2020 at 1:30pm

 Good luck on yours, Poorness! Looking forward to seeing your video on it.

Comment by Southern Ray on October 17, 2020 at 1:29pm

 Been looking forward to this since you mentioned it was coming a while back. Don't know how I missed it, but I did. Thank you, thank you, thank you for these. I have a pretty good understanding of this stuff now, thanks to you and a few others here. You rock, Brian!

Comment by BrianQ. on October 16, 2020 at 7:29pm

Heck yea! Post it here too? Happy building :)

Comment by Poorness Studios on October 16, 2020 at 5:53pm

I got all the parts on hand... I'll be building one... video coming soon. :-)

Comment by Poorness Studios on October 2, 2020 at 1:00pm

Got it. I think I was reading the negative (-) as a 1. Ha ha... but still... I didn't discern 1 and 8 are connected from the schematic. I totally see it now though. You're right about the numbers being close together. I am going to try this.

Comment by BrianQ. on October 2, 2020 at 11:51am

1 connects to 8, as with most LM386 circuits, but only 2 & 4 go to ground, yes 3 is In & 5 is Out, only 6 goes to 9 Volts & yes 7 is not used? The numbers are a little close to each other in the schematic though?

Comment by Poorness Studios on October 2, 2020 at 9:48am

Right, they're connected to each other. I explained that weird. Sorry. Let me try again... on the schematic it looks like 1, 2, 4, & 8 all go to ground. 3 to audio in. 1 & 6 to 9V. 5 is the audio output path. 7 is open.

However, the stripboard layout shows 1 and 8 connected together instead of to ground... unless I'm reading it wrong. Just clarifying which one is correct. Sorry for the weird explanation.

Comment by BrianQ. on October 1, 2020 at 11:42pm

In the schematic Pin 7 isn’t connected to the circuit, so it’s just hanging? Pins 1/8 are connected together through the uncut copper trace, but you can leave them open for more of a less distorted boost effect? 

Comment by Poorness Studios on October 1, 2020 at 9:46pm

Hey Brian. Looking a little deeper at this. On the schematic... the only open IC pin you show is pin 7. However on the stripboard layout it looks like 1, 7, and 8 are all open. Is that an oversight or am I reading it wrong?

Comment by Poorness Studios on October 1, 2020 at 9:29pm

This is awesome BiranQ! Very detailed. I've not used a LM386 yet. I may need to try this.

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