JPS5997431U - Excitation circuit of electromagnetic flowmeter - Google Patents
Excitation circuit of electromagnetic flowmeterInfo
- Publication number
- JPS5997431U JPS5997431U JP19269482U JP19269482U JPS5997431U JP S5997431 U JPS5997431 U JP S5997431U JP 19269482 U JP19269482 U JP 19269482U JP 19269482 U JP19269482 U JP 19269482U JP S5997431 U JPS5997431 U JP S5997431U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- rectifying
- switch
- electromagnetic flowmeter
- diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Measuring Volume Flow (AREA)
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
第１図は従来の励磁回路の一例を示す接続図、第２図は
その動作説明のための波形図、第３図は本考案励磁回路
の一実施例を示す接続図、第４図はその動作説明のため
の波形図、第５図および第６図は本考案励磁回路の他の
実施例を示す接続図である。
１・・・交流電源、２・・・トランス、３ａ，３ｂ・・
・整流平滑回路、４ａ、、 ４ｂ・・・スイッチ、５
・・・励磁コイル、６ａ、６ｂ・・・ダイオード、７ａ
、 ７ｂ・・・容量の小さいコンデンサ、ｇａ、
５ｂ・・・逆流防止用ダイオード、Ｑ□、Ｑ辷・高耐圧
、高電流用のＮＰＮ形−°トランジスタ。Fig. 1 is a connection diagram showing an example of a conventional excitation circuit, Fig. 2 is a waveform diagram for explaining its operation, Fig. 3 is a connection diagram showing an embodiment of the excitation circuit of the present invention, and Fig. 4 is its connection diagram. Waveform diagrams for explaining the operation, and FIGS. 5 and 6 are connection diagrams showing other embodiments of the excitation circuit of the present invention. 1... AC power supply, 2... Transformer, 3a, 3b...
・Rectifier smoothing circuit, 4a, 4b...switch, 5
...Exciting coil, 6a, 6b...Diode, 7a
, 7b...capacitor with small capacity, ga,
5b... Diode for backflow prevention, Q□, Q side, high withstand voltage, high current NPN type -° transistor.
Claims (1)
平滑回路と、前記交流電源を整流平滑して負の直流電圧
を得る第２の整流平滑回路と、前記第１の整流平滑回路
の出力端にダイオードを介して接続された容量の小さい
第１のコンデンサと、前記第？の整流平滑回路の出力端
にダイオードを介して接続された容量の小さい第２のコ
ンデンサと、前記第１のコンデンサに第１のスイッチと
電磁流量計の励磁コイルの直列回路を並列に接続する手
段と、前記第２のコンデンサに第２のスイッチと前記励
磁コイルとの直列回路を並列に接続する手段と、前記第
１のスイッチに並列で、かつ第１のスイッチを流れる電
流とは逆方向の電流が流れる向きに接続されたダイオー
ドと、前記第２のスイッチに並列で、かつ第２のスイッ
チを流れる電流とは逆方向の電流が流れる向きに接続さ
れたダイオードとを有する電磁流量計の励磁回路。a first rectifying and smoothing circuit that rectifies and smoothes an AC power source to obtain a positive DC voltage; a second rectifying and smoothing circuit that rectifies and smoothes the AC power source to obtain a negative DC voltage; and the first rectifying and smoothing circuit. A first capacitor with a small capacitance connected via a diode to the output terminal of means for connecting in parallel a second capacitor with a small capacity connected to the output end of the rectifying and smoothing circuit via a diode, and a series circuit of a first switch and an excitation coil of an electromagnetic flowmeter to the first capacitor. means for connecting a series circuit of a second switch and the excitation coil in parallel to the second capacitor; Excitation of an electromagnetic flowmeter having a diode connected in a direction in which a current flows, and a diode connected in a direction in which a current flows in parallel with the second switch and in a direction opposite to the current flowing through the second switch. circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19269482U JPS5997431U (en) | 1982-12-20 | 1982-12-20 | Excitation circuit of electromagnetic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19269482U JPS5997431U (en) | 1982-12-20 | 1982-12-20 | Excitation circuit of electromagnetic flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5997431U true JPS5997431U (en) | 1984-07-02 |
| JPH0219694Y2 JPH0219694Y2 (en) | 1990-05-30 |
Family
ID=30414627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19269482U Granted JPS5997431U (en) | 1982-12-20 | 1982-12-20 | Excitation circuit of electromagnetic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5997431U (en) |
-
1982
- 1982-12-20 JP JP19269482U patent/JPS5997431U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0219694Y2 (en) | 1990-05-30 |
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