A Voltage Controlled Astable Multivibrator with Miller-Integrator

Hirofumi SASAKI  Kuniaki FUJIMOTO  Mitsutoshi YAHARA  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E78-A   No.2   pp.196-198
Publication Date: 1995/02/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section on Analog Circuit Techniques and Computer Aided Design)
Category: 
Keyword: 
miller integrator,  astable multivibrator,  voltage controlled oscillator,  

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Summary: 
In this letter, we propose a simple voltage controlled oscillator (VCO) with circuitry combining a Miller integrator and an RS flip-flop circuit. With the VCO, the control voltage can be varied over a broad range, and the oscillation frequency varies in proportion to the control voltage. The maximum voltage is up to 1000 times the minimum, and the calculated design values and measured values agree well. This VCO can be applied to FM modulators, FSK modulators, and other systems.