Voltage Controlled Oscillator Circuit Diagram

While using a single supply the supply voltage range is from 10v to 24v.

Voltage controlled oscillator circuit diagram.

A voltage controlled oscillator is an oscillator with an output signal whose output can be varied over a range which is controlled by the input dc voltage. Voltage controlled oscillator vco from the name itself it is clear that the output instantaneous frequency of the oscillator is controlled by the input voltage it is a kind of oscillator which can produce output signal frequency over a large range few hertz hundreds of giga hertz depending on the input dc voltage given to it. The ic has a very linear modulation characteristic and has excellent thermal stability. Consequently a vco can be used for frequency modulation fm or phase modulation pm by applying a modulating signal to the control input.

This waveform can either be of sine triangle or even a saw tooth type. The oscillation frequency varies from few hertz to hundreds of ghz. The applied input voltage determines the instantaneous oscillation frequency. It is an oscillator whose output frequency is directly related to the voltage at its input.

The lm566 ic can be operated from a single supply or dual supply. A lm566 is a voltage controlled oscillator ic unit which is built with internal circuitry to generate both triangular and square wave signals whose frequency is set or adjusted by external capacitor and resistor followed with an application of dc voltage. A vco is also an integral part of a phase locked. A voltage controlled oscillator is an oscillator which produces oscillating signals waveforms with variable frequency.

The circuit diagram of a voltage controlled oscillator using lm566 is shown in the figure below. Some of the most common oscillator circuits are lc circuit tank circuit etc. Voltage controlled oscillator using lm566.