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.
The sensor of this circuit is an NTC of 20 to 50 k resistance at room temperature. The circuit is from a...
This different power control circuit with SCR was obtained from a 1967 magazine. The SCR can be...
Mouser Electronics is providing the MGA-622P8 low noise amplifier for frequencies from 1.5 to 2.7...