Problems with power supply for an amplifier project.

[cbf]

Hello.
I am making an amplifier on two TDA2030A. Now anything is connected to the PCB and the only problem is that I need to buy the correct transformer and connect it correctly.
I don't have the schematics, but I have uploaded a part of the schematics where I need to connect AC - GND - AC. It needs bipolar power supply and I have never did anything like this.
So what type of transformer should I buy and how to connect it to the circuit? And how powerful it should be (As I have heard, in reality it does not produce 2x18W as it is said in instruction)?

 

[alexan_e]

You need a center tapped transformer Basic Symmetric Power Supply | Circuit Diagram

Alex

 

[SANDEEP ANAND]

hello.
I am making an amplifier on two tda2030a. Now anything is connected to the pcb and the only problem is that i need to buy the correct transformer and connect it correctly.
I don't have the schematics, but i have uploaded a part of the schematics where i need to connect ac - gnd - ac. It needs bipolar power supply and i have never did anything like this.
So what type of transformer should i buy and how to connect it to the circuit? And how powerful it should be (as i have heard, in reality it does not produce 2x18w as it is said in instruction)?
View attachment 62459

hi cbf in your circuit you have to use 12 -0-12 step down tanformer,in put voltage 220-230v ac, output 12-0-12 vac 2 ampere or you may use 12-0 step down tanformer,in put voltage 220-230v ac, output 12-0 vac 2 ampere .

---------- Post added at 00:07 ---------- Previous post was at 00:06 ----------

 

[cbf]

Thanks for your answers.
Now I understand that I can use a center tapped transformer (is it the mentioned 12-0-12 ?)
And if I used a 12-0 transformer I would have to rebuild the filter, yes?
But is it possible to use a transformer like this one?
**broken link removed**

 

[alexan_e]

check Mains Voltage Power Transformers - delabs

Alex