This circuit was obtained from a 1970s RCA. The circuit uses LDRs as sensors. The resistors depend on the A / D converter used. The circuit can be used as a shield.
Suggested by Harris in documentation from the 80s, this circuit uses components from that time. It...
This high-voltage regulator uses only two components. The resistor is a wound wire type with 1 W...
This circuit uses an impact sensor transistor called Pitran rare today. The circuit is from 1969...