Found in a 1968 Novel Electronics Circuit, this circuit compares two light intensities using common LDRs as sensors. Transistors can be modern PNP equivalents.
Amphenol Sine eco | mate ™ connectors can be purchased from Mouser Electronics for a variety of...
For those who have multimeters that do not test transistors, in the figure we have a circuit that...
This sensitive receiver with earphone was found in an English documentation from 1963. The...