Found in a 1968 Novel Electronics Circuit, this circuit compares two light intensities using common LDRs as sensors. Transistors can be modern PNP equivalents.
This circuit was found in a book on transistors from 1954. It works by the beat that is detected by...
This stage for general purpose transistors was taken from an old technical manual. The circuit can...
This circuit provides reverse power polarity protection using a power MOSFET and a diode. The...