LM359 Voltage Controlled Oscillator Circuit

Voltage controlled oscillator (VCO) is similar to a voltage to frequency converter (VFC), an oscillator which its output frequency is determined by a control voltage input. This is the figure of the circuit; Where d is the amplifier input voltage = 0. 6V, h=hysteresis of DM1474 (typically = 1V). R2 must beequal to 2R1 for proper operation. Using th

is circuit, operation up to 5MHz can be achieved.

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