Linear Vco

  

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Inside:
Audio Oscillator Circuits / Audio Circuits
This VCO uses an LF356 op amp to produce a linear frequency vs. voltage characteristic using the CMOS HC4046. The frequency rang
Linear Vco - schematic

e can be changed by changing the capacitor connected between pins 6 and 7 of the HC4046. Using the HC4046`s internal transistor instead of an external component achieves the linearization in diagram.

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