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Need more info on a symbol from schematic

post #1 of 13
Thread Starter 

1.gif

OK i have this Schematic that i have is something to do with the LM386 but is not this one, the reason i put this one is because i wanted to know what am i supposed to do with the symbols in the red box. OK the one on the bottom is the one i try to do.

 

LM386.bmp

 

OK about this schematic, I solder the components on there correct points, but I'm not sure if i did the potentiometer correct it has three pin and what i did is the positive from the audio input in the third pin (while the shaft of the potentiometer is pointing up) middle pin into third pin of the chip and the first with all the other components that has ground symbols. OK so all the ground are solder together or where do i put them. (somebody please help.)

post #2 of 13

You can more accurately think of "Ground" as meaning "0 volts".

Connect the "Grounds" to the 0 volts in your power supply.

post #3 of 13
Thread Starter 
Quote:
Originally Posted by Avro_Arrow View Post

You can more accurately think of "Ground" as meaning "0 volts".

Connect the "Grounds" to the 0 volts in your power supply.

So connect every single ground to every other one except the battery and where would the negative from the battery would go.

 

 

post #4 of 13

In this case, your battery is the power supply, so connect all of the grounds to the negative battery terminal.

(which incedentally for reference sake IS zero volts)

post #5 of 13
Thread Starter 
OK well that's what I did but i can't hear anything, or is it because of pin 7 is not connected to anything. And thus it matter how I connect it, cause what I did is put them all together and put a big blob of solder.
post #6 of 13

Are you doing this point to point? A picture would help here. Take a picture of both sides if you're using a board that's wired underneath. I like to use pins or something otherwise substantial (1/8" square copper strips, terminal blocks, etc) for grounding blocks because you can solder several wires to them.

post #7 of 13
Thread Starter 


1.JPG2.JPG3.JPG4.JPG5.JPG6.JPG
 

OK here are the pictures sorry it took long to post them but hope you could figure the whole wiring set that i did, just have some patience  I'm new to all this.

Quote:
Originally Posted by SiBurning View Post

Are you doing this point to point? A picture would help here. Take a picture of both sides if you're using a board that's wired underneath. I like to use pins or something otherwise substantial (1/8" square copper strips, terminal blocks, etc) for grounding blocks because you can solder several wires to them.



 

post #8 of 13

It looks like the tip of the plug is not wired up you are connecting to the sleeve and ring

 

cheers

FRED

post #9 of 13
Thread Starter 
Quote:
Originally Posted by Fred_fred2004 View Post

It looks like the tip of the plug is not wired up you are connecting to the sleeve and ring

 

cheers

FRED


I'm sorry but can you explain more of what you just said, what's wrong with it, what do i need to fix.
 

 

post #10 of 13

 

I think you need to put the red wire onto the tip of the plug, atm you are connected to the sleeve and the ring which won't work

 

at least that's how it looks on the picture

 

 

jack_TRS.jpg

post #11 of 13
Thread Starter 
Quote:
Originally Posted by Fred_fred2004 View Post

 

I think you need to put the red wire onto the tip of the plug, atm you are connected to the sleeve and the ring which won't work

 

at least that's how it looks on the picture

 

 

jack_TRS.jpg



This help a lot, thank you. But the sleeve is connected to all the other ground symbols, well that's what people being telling me that the sleeve is the negative then the middle ring is Right and the tip is the Left. But i have the Red connected to the R, so what you are suggesting is to connect it on the tip, right.

post #12 of 13

The sleeve is correct

 

red needs to go to the tip

 

its a mono amplifier

post #13 of 13
Thread Starter 
Quote:
Originally Posted by Fred_fred2004 View Post

The sleeve is correct

 

red needs to go to the tip

 

its a mono amplifier


 

Sorry, but like i said before I'm new to all this but i connect the red wire to the tip and still no sound, and the other way i had it made some static noise. But can you please help me again. Thank you.
 

 

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