ground connection! should gnd connect to -battery terminal ?

[aj_silverthunder]

ground connection!

here in this circuit,at the bottom of the circuit u can see many ground connection,i think and one of them should be connected to the negative terminal of the power source! the schematic is here " https://www.flickr.com/photos/aj_silverthunder/4141615924/ "
and the others are of no use!what do u say ,am i right!

 

[Audioguru]

ground connection!

All the grounds are connected to the ground plane on one side of the double-sided pcb.

Of course the 0V of the power supply connects to the ground of the circuit.

 

[analognow]

Re: ground connection! should gnd connect to -battery termin

I didn't see a power supply in the schematic, but since I don't see anything that uses a negative voltage, I'd say the negative of the battery goes to ground along with everthing else.

 

[Audioguru]

Yes, the negative of the power supply connects to 0V which is ground in the circuit.