I was wondering about the way the LM311 is wired ..

can any one check it and tell that whether it is right or wrong ?

 

Looks indeed very strange. The ground pin is at the output, the output together with the power supply pin, stabilized via a zener diode?

Maybe it's an other chip? Where is it from?

 

Hello,

I see no problems with the schematic.
When you look at the internal schematic of the 311, you see that 7 is the collector of the output transistor and 1 is the (current limited) emittor output.

Bertus

 

Well , I'll be a monkey's Uncle..
Should have gone thru that .!!!

Thanks Bert....