JPS60134114U

JPS60134114U - capacitive converter

Info

Publication number: JPS60134114U
Application number: JP2005784U
Authority: JP
Inventors: 平田　輝孝; 尾土平　きよし
Original assignee: 横河電機株式会社
Priority date: 1984-02-15
Filing date: 1984-02-15
Publication date: 1985-09-06

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来装置の一例を示す接続図、第２図は本考案
装置の−÷施例を示す接続図、第一３図および第４図は
本考案装置の他の実施例を示す接続図である。１１・・・可変コンデンサ、ｌｌａ・・・可動電極、１
１ｂ・・・固定電極、２１・・・基準コンデンサ、１２
゜２２・・・チャージコンバータ、１３・・・発振器、
１５．２５・・・ピーク検出器、１６・・・制御回路、
１７・・・演算回路。Fig. 1 is a connection diagram showing an example of a conventional device, Fig. 2 is a connection diagram showing a -÷ embodiment of the device of the present invention, and Figs. 13 and 4 are connection diagrams showing other embodiments of the device of the present invention. It is a diagram. 11... Variable capacitor, lla... Movable electrode, 1
1b...Fixed electrode, 21...Reference capacitor, 12
゜22... Charge converter, 13... Oscillator,
15.25...Peak detector, 16...Control circuit,
17...Arithmetic circuit.

Claims

[Scope of utility model registration request]

a variable capacitor whose capacitance changes depending on the amount to be measured; an oscillator that applies an oscillation output to the variable capacitor; and the variable capacitor connected to an input circuit or a feedback circuit;
A capacitive conversion device comprising: a charge converter that outputs an AC voltage with an amplitude corresponding to the capacitance; and a peak detector to which the output of the charge converter is added and outputs a DC voltage related to the capacitance of the variable capacitor.