Thanks for your info but after browsing through the web i still not sure which one to use. >_< i am currently using LM124 to amplify the output signal from the sensor,but i am not sure whether it is suitable or not,this Op-Amp can give me a ~100+ gain.
But afer the amplification i need to do a window comparator to control a motor.(TTL logic 5.0V)
For comparator i used LM 119 for the job,so is there any good combination to subsitute these 2 IC? or any better way to do the job?
Done mind to share out your idea ya?
Thanks ^_^