JPS58191569U

JPS58191569U - electricity meter

Info

Publication number: JPS58191569U
Application number: JP9060082U
Authority: JP
Inventors: 戸田　政義
Original assignee: 三菱電機株式会社
Priority date: 1982-06-15
Filing date: 1982-06-15
Publication date: 1983-12-20

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図は従来の電力量計の構成を示すブロック図、第２
図は第１図の電力量計における計測回路のブロック図、
第３図はこの考案に係る電力量計の一例における計測回
路のブロック図、第４図はこの考案の電力量計における
第２の電圧・周波数変換器の電圧と周波数の関係を従来
のものと対比して示す特性図である。２３・・・乗算器、２４・・・第１の電圧・周波数変換
器、２５・・・第１の分周器、２６・・・カウンタ回路
、２８・・・動作表示器、３１・・・第２の電圧・周波
数変換器。なお、図中同一符号は同一もしくは相当部分
を示す。Figure 1 is a block diagram showing the configuration of a conventional electricity meter;
The figure is a block diagram of the measurement circuit in the electricity meter shown in Figure 1.
Figure 3 is a block diagram of a measurement circuit in an example of a watt-hour meter according to this invention, and Figure 4 shows the relationship between the voltage and frequency of the second voltage/frequency converter in the watt-hour meter of this invention compared to a conventional one. It is a characteristic diagram shown for comparison. 23... Multiplier, 24... First voltage/frequency converter, 25... First frequency divider, 26... Counter circuit, 28... Operation indicator, 31... Second voltage to frequency converter. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

a multiplier that multiplies a voltage signal proportional to the load voltage by a voltage signal proportional to the current consumption; and a first voltage/frequency conversion that receives the output from the multiplier and outputs a pulse train having a frequency proportional to the output. a first frequency divider that divides the frequency of the pulse sequence from the first voltage/frequency converter, a counter circuit that counts the pulse sequence frequency-divided by the frequency divider, a voltage, a second voltage/frequency converter which has a voltage/frequency characteristic in which the ratio to frequency increases as the voltage decreases, and which receives the output from the multiplier and outputs a pulse train of frequency according to the characteristic; , a power consumption meter in which the output from the second voltage/frequency converter is used as a blinking drive signal source for an operation indicator.