Is there something wrong in this circuit? Got it from my friend.
It didn't work.. maybe i had some error in my pcb layout.
And how can i tell how much power is there in the circuit? Can it support 2 to 3 loads?

I'm new here and of electronics world. =)
forgive me if i can't understand things and for asking many questions

 

What circuit ?

 

Isn't the picture shown above?

 

What picture ?

 

This one.

 

The first stage is a 2-tran multivibrator.
The second stage is a symmetrical push-pull driver.
And the last stage is the push-pull power stage with BD139's driving 2N3055s.

It's a very ugly circuit, you can replace those first two massive complex stages with a simple 4047 IC;

Same thing, but much simpler!