Wednesday, April 17, 2013

Voltage to Frequency Converter Circuit

This voltage to frequency converter circuit has an oscillator that is voltage controlled and has a small, 0.5% deviation. IC1 function as a multivibrator and produces rectangular impulses with equal width.
The width of the impulses depend on R4, P1 and C1. With P1 we can do fine adjustments of the output frequency.
The output frequency can be easily adjusted with the help of U1 voltage. D3 diode is required because we want to eliminate R4 and P1 influence. D1 and D2 diodes produce a small flow of temperature. With P2 we adjust the offset voltage. Because of its high quality, this voltage-frequency converter (VCO) can be used in a large field of applications.

Voltage-Frequency Converter Circuit Diagram

MC145026P LM1851N LTC485CN8 LTC3707EGN LTC1753CG LT1014DN LM2596S-3.3 HC9P5504B-5 MAX913CSA MAX707ESA M82C55A-2 MAX483CSA IS41C16256-35K

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