This circuit was found on an 80's Ham Radio. The transistor admits equivalent. The circuit can generate 20 to 100 MHz signals operating at the fifth harmonic of the crystal.
Originally, this 2000 documentation circuit was created to operate as a sensor for the parallel...
Mouser Electronics offers a vibration sensor which is considered the smallest in its class. This...
This circuit was found in a NASA documentation from the 1980s. The components used are of the time...