This circuit is from the Motorola Linear Databook of 1990 and can be implemented with other operational amplifiers. The power supply must be symmetrical.
The previous oscillators that use gatesshown in this section, and the 4093 in the basic version,...
This voltage controlled oscillator uses a varicap to change the frequency. Usin a 100 turns coil...
The circuit shown in the figure is indicated for alternative sources of energy, such as those...