This circuit was found in an Australian publication from 1991. It is a transmitter that transmits a signal when it detects moisture. The range is on the order of a few tens of meters.
The purpose of the diode in this oscillator circuit is to limit the amplitude of the output...
The integrated circuit used in this oscillator is no longer common in our market, as the...
Found in Maxim's documentation, this high frequency circuit uses period components. The graph...