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 Motorola's 1967 documentation this circuit can use any general-purpose transistor. The signal...
This circuit can be found on this website in similar versions. The power supply is given in...
Found in a 90s Popular Electronics this circuit generates signals from 530 to 1600 kHz for...