i'm building a simple preamp (for a diy TDA8932 chip amp).
I'm having trouble figuring out the grounding.
the + signal wire goes to the + input terminal on my amp board, and the -(gnd) signal wire connect to the negative (signal ground) terminal on my amp board. So therefore, the "bottom" wire on the diagram is grounded, as it connects to the signal ground (-)terminal, correct? i do not need an additional connection to a gnd terminal, right?
This modified diagram is how I understand I should build the circuit, correct? Or do i need an additional connection to ground/earth( i have one on my power supply for the amp, but that's literaly just the ground from my house power socket, conecting this circuit to that seems extreme somehow).
If this circuit is meant to function with a batery (be portable), there's no way to ground it, right, so the negative batery terminal functions as ground, right?
So the GND connection/symbol, just ilustrates the need for that wire to be grounded. basicaly, there's 6 connections to this circuit (2 input (+/gnd), 2 output (+/gnd), two DC (+/-)). or is there a seventh, ground connection to somewhere, if so, where.
I'm planing on using a 9V dc charger as power supply, so don't want to accidentily fry my amplifier chip.
I'm having trouble figuring out the grounding.
the + signal wire goes to the + input terminal on my amp board, and the -(gnd) signal wire connect to the negative (signal ground) terminal on my amp board. So therefore, the "bottom" wire on the diagram is grounded, as it connects to the signal ground (-)terminal, correct? i do not need an additional connection to a gnd terminal, right?
This modified diagram is how I understand I should build the circuit, correct? Or do i need an additional connection to ground/earth( i have one on my power supply for the amp, but that's literaly just the ground from my house power socket, conecting this circuit to that seems extreme somehow).
If this circuit is meant to function with a batery (be portable), there's no way to ground it, right, so the negative batery terminal functions as ground, right?
So the GND connection/symbol, just ilustrates the need for that wire to be grounded. basicaly, there's 6 connections to this circuit (2 input (+/gnd), 2 output (+/gnd), two DC (+/-)). or is there a seventh, ground connection to somewhere, if so, where.
I'm planing on using a 9V dc charger as power supply, so don't want to accidentily fry my amplifier chip.