This variable frequency oscillator for radio transmission covers the range from 1.6 MHz to 20 MHz, depending only on the coil used. The circuit is very stable and can be used in amateur equipment.
This circuit was found in an English technical documentation from 1976. The supply can be done...
The simultaneous presence of signals at inputs 1 and 2 of this circuit causes their trip and lock....
This circuit with JFET was obtained in a book on FETs of 1989. The circuit is still current since...