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.
Obtained in a 1969 Ferranti documentation, this circuit dissipates only 2.2 mW with 4.5 V. The...
This configuration is traditional and can be found in many other circuits in this section. The...
Suggested by General Electric in a 1965 publication this circuit uses a light bulb. Can be changed...