Query relating voltages in circuit

[Anshul Bains]

I have an audio amplifier circuit that requires +12V (non-inverted), 0V (neutral), and -12V (inverted) to run. I want to put it in my car and I am not sure that whether the car has -12V (inverted) supply so the question is can I use +24V, +12V and 0V respectively instead to run it as the potential difference will anyways be same in both the case. To get +24V I would be using a 12V to 24V voltage booster. Thanks in advance for being here.

 

[Kabelsalat]

Difficult to give an appropriate answer without seeing the schematic.

If you ensure that the inverter is powerful enough to drive the amplifier, it should work. However, the risk is that the output will have a DC component of 12V, which probably will destroy the amplifier and the speakers.

 

[davenn]

Difficult to give an appropriate answer without seeing the schematic.

If you ensure that the inverter is powerful enough to drive the amplifier, it should work. However, the risk is that the output will have a DC component of 12V, which probably will destroy the amplifier and the speakers.

I think you misunderstand the question

The OP is referring to an amplifier that has a split rail supply +12V 0V -12V
a vehicle doesn't have this, it only has +12V and 0V

tell us more about the amp.... pictures, make and model etc

 

[BobK]

You can't use a 24 and a 12 to get ±12 because the 12V supply would have to sink current from the 24V supply.

What you want is a buck-boost converter, which puts out a negative voltage.

Or, better yet, get one of the many thousands of amps designed to work on an auto electrical system.

Bob

 

[Anshul Bains]

Actually its an home theater subwoofer that works on AC it has a transformer that converts 220V AC to 2*12V 1.5A AC and the circuit further convert/ rectifies this into +12V and -12V. As to your responses now I guess the +24V thing is an bad idea then. I should better use an 12V inverter. What say ?

 

[Anshul Bains]

Back side of the circuit

 

[Kabelsalat]

You have wires on the printed side that doesn't appear at the other picture.

How about you drawing the circuit by hand - you're the only person that can see the names of the components and to follow those wires that only appears at one image. . .

 

[Anshul Bains]

You have wires on the printed side that doesn't appear at the other picture.

How about you drawing the circuit by hand - you're the only person that can see the names of the components and to follow those wires that only appears at one image. . .

I put those wires for testing . They deliver voltage to the circuit. Anyways I have figured out that there is no way I can run this circuit on DC and will have to use AC.