JPS5824029U

JPS5824029U - electromagnetic flow meter

Info

Publication number: JPS5824029U
Application number: JP11826881U
Authority: JP
Inventors: 鈴木　一宇
Original assignee: 株式会社北辰電機製作所
Priority date: 1981-08-11
Filing date: 1981-08-11
Publication date: 1983-02-15

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

【図面の簡単な説明】[Brief explanation of the drawing]

第１図ａ　”−ｃは時間的に変動する負荷電流の各種波
形を示す波形図、第２図は従来技術に係る電源回路を示
す回路図、第３図は本考案の一実施例を示す回路図、第
４図ａ　”−ｅはその各部の波形図、第５図ａはスイッ
チ６ａの他の動作タイミングを゛示す波形図、第５図す
はスイッチ７ｄの他の動作タイミングを示す波形図、第
６図は本考案の他の実施例を示す回路図、第７図ａ、　
　ｂは各部の波形図である。 □　図面中、４は発信器、４ａは励磁コイル、４ｅは信
号変換回路、５は電源、６は励振回路、７は電源回路、
■は電流、Ｉｅは励磁電流である。［ｌＮ９Ｆ、４図Figures 1a and 1c are waveform diagrams showing various waveforms of load current that vary over time, Figure 2 is a circuit diagram showing a power supply circuit according to the prior art, and Figure 3 is an embodiment of the present invention. Circuit diagram, Fig. 4a''-e is a waveform diagram of each part, Fig. 5a is a waveform diagram showing other operation timings of switch 6a, Fig. 5 is a waveform showing other operation timings of switch 7d. Figure 6 is a circuit diagram showing another embodiment of the present invention, Figure 7a,
b is a waveform diagram of each part. □ In the drawing, 4 is a transmitter, 4a is an excitation coil, 4e is a signal conversion circuit, 5 is a power supply, 6 is an excitation circuit, 7 is a power supply circuit,
(2) is a current, and Ie is an exciting current. [l N 9F, Figure 4

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

（１）発信器、これの励磁コイルを励振する励振回路及
びこれに電流を供給する電源を有する電磁流量計におい
て、前記電源から励振回路に電流を供給しない期間には
ダミー回路に電流を供給するようにしたことを特徴とす
る電磁流量計。(1) In an electromagnetic flowmeter that includes an oscillator, an excitation circuit that excites its excitation coil, and a power source that supplies current to this, current is supplied to a dummy circuit during a period when the power source does not supply current to the excitation circuit. An electromagnetic flowmeter characterized by:

（２）　　前記ダミー回路を時定数素子及び定電圧回路
で構成したことを特徴とする実用新案登録請求の範囲第
１項に記載の電磁流量計。(2) The electromagnetic flowmeter according to claim 1, wherein the dummy circuit is composed of a time constant element and a constant voltage circuit.

（３）前記時定数素子及び定電圧回路を発信器の信号変
換回路の電源としたことを特徴とする実用新案登録請求
の範囲第２禰に記載の電磁流量計。(3) The electromagnetic flowmeter according to claim 2 of the utility model registration claim, characterized in that the time constant element and the constant voltage circuit are used as a power source for a signal conversion circuit of an oscillator.