The operational amplifier don´t take current from power source

[talabert]

Hello

I have a problem with simulating this circuit http://www.elektropage.com/default.asp?tid=716 .For input I placed there a AC voltage source and for power source I placed 36V DC power source. Now when I am simulating that there is a current on speaker, but current on power source is zero. And  now there is no current through the resistors 2R2, therefore no voltage drop and transistors don´t open. So olny job maker is TDA2030 and it does it over limits and don't consume current but in output it has current. It's like calculting only voltages. Could anyone help me with this problem? Thank you.

[e-nDrju]

Could you give us your multisim file?

[talabert]

Here it is

[patsak]

Hello,

What kind of analysis are you using? Your circuit seems to work properly. You could use transient analysis to check each current in your bridge circuit, in order for example to check that your V2 source is providing current to your circuit.

Regards

[talabert]

Here is two graphs from my simulation