i had been making an electronic levitator from a site called 'cyber electronics'
http://www.cyberelectronics.org/?p=54 -> levitron.pdf
i am not getting the hall sensor tle4905 or ss495a
so i got mh185 hallsensor in replacement for that .
now i am coming across problem to make correct connection with opamp.
please help!

 

Looking at page 2 of the spec sheet, connect Pin 1 to +ve
Pin 2 to op-amp input
Pin 3 to ground

http://www.magnesensor.com/pimage/080410_MH185_datasheet_V012.pdf

 

man it is not working
i it right that pin 2 should go to op-amp bcos in schematics it is given that pin3 should go to op-amp