This circuit allows the detection of RF signals using the lowest range of direct currents of a common multimeter. Equivalent diodes such as 1N34 can be used. The circuit is assembled in a ballpoint tube.
The circuit shown allows the change of the clock speed of a microprocessor to reduce consumption. What is...
Found on Popular Electronics this circuit has variations found throughout this site and section....
Suitable for clandestine listening and in SMD assembly, this circuit was found in the Radio...