JPS5917871U

JPS5917871U - Iron loss measuring device

Info

Publication number: JPS5917871U
Application number: JP8332583U
Authority: JP
Inventors: 松田　哲郎; 勝治近藤; 平田　承夫
Original assignee: 横河電機株式会社
Priority date: 1983-06-01
Filing date: 1983-06-01
Publication date: 1984-02-03
Also published as: JPS5928377Y2

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 drawings]

図は本考案に係る鉄損測定装置の一実施例を示すブロッ
ク図である。ＥＰ・・・エプスタイン試験装置、ＤＴＵ・・・検出ユ
ニット、Ｅ・・・エプスタイン試験装置の二次コイル実
効値電圧、Ｅｌ−・・エプスタイン試験装置の二次コイ
ルの平均値電圧、ＯＰＵ・・・演算ユニット、ＯＰ工〜
ＯＰ４・・・演算増幅器、ＤＩＶ・・・割算器、ＭＵＬ
・・・掛算器、ＲＭ・・・可変抵抗器、ＯＵＴ・・・出
力端子。The figure is a block diagram showing an embodiment of the iron loss measuring device according to the present invention. EP...Epstein test device, DTU...detection unit, E...Epstein test device secondary coil effective value voltage, El-...Epstein test device average value voltage of the secondary coil, OPU... Arithmetic unit, OP engineering ~
OP4...Operation amplifier, DIV...Divider, MUL
...Multiplier, RM...Variable resistor, OUT...Output terminal.

Claims

[Scope of Claim for Utility Model Registration] In a measuring device that measures the iron loss of a sample using an Epstein test device, the effective voltage E and the average voltage E5 of the secondary coil of the Epstein test device and the iron loss W of the sample. The detection unit consists of a detection circuit that detects the
a first operational amplifier to which the output voltage E of the effective value voltage detection circuit is applied via its input resistor R; a first polarity inverting circuit applied to the summing point of the first operational amplifier; the output of the first operational amplifier is applied to the dividend input terminal; and the output voltage E1 of the average value voltage detection circuit is applied to the divisor input terminal; output electric signal W of the divider and the iron loss detection circuit. a second polarity inversion circuit for inverting the polarity of the divider, the output voltage of the divider being applied to one input terminal of the divider through a variable resistor that sets the ratio e of eddy current loss in the iron loss; an arithmetic unit comprising a multiplier to which the output of the second polarity inversion circuit is applied, and a second operational amplifier to which the output of the multiplier and the output of the second polarity inversion circuit are applied to the summing point, An iron loss measuring device configured to obtain a signal corresponding to an iron loss W expressed by the following formula from an output terminal of a second operational amplifier. w=w. (('1.90~2.oo)・e し"")
E.