Hi, I get this from levitation circuit. I don't figure out how it works. Can anybody can help me? Thanks

 

What exactly is it supposed to do? It has no output.

 

Looks like R11 is the output of a bridge amplifier.

 

That's an odd circuit.
The positive feedback would seem to cause the output to latch at one of the rails, so I think there's an error in the circuit.
What is the signal source?

Have you tried to simulate it?

 

- These two outputs are connected to coil to control magnet field, keep thing balances.
- Signal comes from Hall Sensor, after amplifying level 1

 

What exactly is it supposed to do? It has no output.

FYI

 

That's an odd circuit.
The positive feedback would seem to cause the output to latch at one of the rails, so I think there's an error in the circuit.
What is the signal source?

Have you tried to simulate it?

FYI