Found in an old Popular Electronics this circuit can also be adapted to be used as a shield. In this version the control can trigger loads from the light that falls on an LDR.
This circuit is from a 1965 General Electric Hobby manual. The circuit uses only passive...
This circuit consists of a good perfromance audio amplifier powered from two or four batteries and has...
The Texas Instruments TPS7A92 integrated circuit consists of a low-voltage (LDO) linear voltage...