This circuit is suitable for calibrating old oscilloscopes. It was found in a 1980s documentation. It generates precise signals given by the crystal.
This robot vision circuit was published in the December 1986 issue of Radio Electronics magazine. The...
This transmitter, indicated for espionage applications, is permanently powered by the power grid....
The maximum frequency of this oscillator, in the case of 100 kHz, depends on the operational used....