This circuit was obtained in a 1978 publication. The supply can be symmetrical from other voltages. Frequency can be changed by changing the capacitors.
This radio receiver for two wave bands (medium and short) was manufactured in Japan in the 1960s....
The circuit shown in the figure is suggested by Intersil (www.intersil.com) and makes use of the...
This circuit with traditional discrete components was found in a 1990 documentation. The circuit can...