JPS5897563U - Current detection circuit for variable frequency power supply - Google Patents
Current detection circuit for variable frequency power supplyInfo
- Publication number
- JPS5897563U JPS5897563U JP19510581U JP19510581U JPS5897563U JP S5897563 U JPS5897563 U JP S5897563U JP 19510581 U JP19510581 U JP 19510581U JP 19510581 U JP19510581 U JP 19510581U JP S5897563 U JPS5897563 U JP S5897563U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- variable frequency
- frequency power
- detection circuit
- current detection
- 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.)
- Pending
Links
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Current Or Voltage (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図は従来の可変周波数電源用電流検出回路の回路図
、第２図は第１図の可変周波数、電源用電流検出回路の
出力波形図、第３図は本考案に係る可変周波数電源用電
流検出回路の回路図、第４図イ９ロ、′ハ、二、：、ホ
、へおよびトは夫々第３−の′″′？７零竺：ｓｍｙｆ
ｆｉｓ、２３．２４−負荷、２５．２６・・・・・・理
想ダイオード回路、２７・・・・・・反転加算回路、２
８・・・・・・理想グイ、オード、 、３４・・・・
・・加算回路、３５・・・・・・増巾回路。Figure 1 is a circuit diagram of a conventional current detection circuit for a variable frequency power supply, Figure 2 is an output waveform diagram of the current detection circuit for a variable frequency power supply shown in Figure 1, and Figure 3 is a diagram of a current detection circuit for a variable frequency power supply according to the present invention. Circuit diagram of the current detection circuit, Fig. 4 A, B, C, II:, E, G and G are the 3rd and 7th zeros, respectively: smyf
fis, 23.24-load, 25.26... ideal diode circuit, 27... inverting adder circuit, 2
8... Ideal Gui, Ode, , 34...
... Addition circuit, 35... Amplification circuit.
Claims (1)
２相に商用周波数用の計器用変流器の入力側を接続する
とともに、上記計器用変流器の出力側に夫々負荷抵抗を
接続し、これら負荷抵抗の出力電圧から上記各電源ライ
ンに流れる電流に比例する電圧を検出する一方、これら
の電圧を夫々理想ダイオード回路に入力して得られた半
波整流波形を加算して全波整流波形を得るようにしたこ
とを特徴とする可変周波電源用電流検出回路。, Connecting the input side of a commercial frequency instrument current transformer to at least two phases of the power line of the three-phase variable frequency power supply, and connecting a load resistor to the output side of each of the instrument current transformers, While detecting a voltage proportional to the current flowing in each of the power lines mentioned above from the output voltage of these load resistors, the half-wave rectified waveform obtained by inputting each of these voltages to an ideal diode circuit is added to form a full-wave rectified waveform. A current detection circuit for a variable frequency power supply, characterized in that it obtains the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19510581U JPS5897563U (en) | 1981-12-25 | 1981-12-25 | Current detection circuit for variable frequency power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19510581U JPS5897563U (en) | 1981-12-25 | 1981-12-25 | Current detection circuit for variable frequency power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5897563U true JPS5897563U (en) | 1983-07-02 |
Family
ID=30108390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19510581U Pending JPS5897563U (en) | 1981-12-25 | 1981-12-25 | Current detection circuit for variable frequency power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5897563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04322129A (en) * | 1991-04-23 | 1992-11-12 | Fujitsu Ltd | Parallel operation system for power supply unit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5544996A (en) * | 1978-09-26 | 1980-03-29 | Siemens Ag | Current detecting circuit |
-
1981
- 1981-12-25 JP JP19510581U patent/JPS5897563U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5544996A (en) * | 1978-09-26 | 1980-03-29 | Siemens Ag | Current detecting circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04322129A (en) * | 1991-04-23 | 1992-11-12 | Fujitsu Ltd | Parallel operation system for power supply unit |
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