This setting applies to virtually any photo transistor and any operational amplifier. The power supply must be symmetrical, and the gain is determined by the relationship between R2 and R1.
Found in old Philips documentation, this circuit uses components from the 60's. | Clique na imagem...
The circuit shown uses the LM324, but can be implemented with other operational ones. The source...
Found in Linear Technology documentation, this circuit drains only 70 uA of the monitored circuit....