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.
This amplifier from 100 to 150mW was found in a Japanese documentation from 1967. The circuit uses...
This receiver circuit was found in a Hands On Electronics from the 90s. The circuit uses a PLL...
This circuit was found in an EDN from the 90s. The circuit employs a double 555 and uses the...