A simple analog division scheme

Author

Laopoulos, TH.L. ; Karybakas, C. A A

Author_Institution

Electron. Lab., Aristotle Univ. of Thessaloniki, Greece

Volume

40

Issue

4

fYear

1991

fDate

8/1/1991 12:00:00 AM

Firstpage

779

Lastpage

782

Abstract

A technique for analog division of two voltage signals that offers high accuracy (0.5%) and relatively good response, especially when the numerator value is nearly constant, is presented. The proposed method is based on the relation of a signal´s frequency to its period. The basic idea is to convert input voltage to frequency (through a voltage-controlled oscillator (VCO)) and then produce an output voltage proportional to the period of this signal. The circuit implementing this method is easy to build and may be used in many instrumentation and control applications where the reciprocal of a voltage is needed. Supporting experimental results and performance measurements are also given

Keywords

analogue circuits; variable-frequency oscillators; voltage dividers; voltage-frequency convertors; analog division; control; instrumentation; voltage frequency convertor; voltage signals; voltage-controlled oscillator; Circuit synthesis; FETs; Feedback circuits; Frequency conversion; Instruments; Measurement; Operational amplifiers; Physics; Voltage control; Voltage-controlled oscillators;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.85354

Filename

85354