JPS5446077A - 3 phase alternating current voltage detection circuit - Google Patents
3 phase alternating current voltage detection circuitInfo
- Publication number
- JPS5446077A JPS5446077A JP11220777A JP11220777A JPS5446077A JP S5446077 A JPS5446077 A JP S5446077A JP 11220777 A JP11220777 A JP 11220777A JP 11220777 A JP11220777 A JP 11220777A JP S5446077 A JPS5446077 A JP S5446077A
- Authority
- JP
- Japan
- Prior art keywords
- alternating current
- detection
- voltages
- detection circuit
- circuits
- 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
- Emergency Protection Circuit Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
PURPOSE: To supress ripples and enable detection of high accuracy to be performed with less time delay by synthesizing 3 phase alternating current voltages with a synthesis circuit by way of delta and star connection detection circuits, 3 phase full rectifying circuits and regulators respectively.
CONSTITUTION: The alternating current voltage of a 3 phase power source applied to input terminal 1 passes through delta connection type detection circuit 2 and star connection type detection circuit 3 and is full-wave rectified in 3 phase full-wave rectifying circuits 4, 5 respectively, after which it is converted to direct currents. These two direct currents are passed through regulators 6, 7 respectively and are adjusted so that the two direct current voltages of the phases of ripple voltages differing by 30° become equal, after which both voltages are synthesized in a synthesis circuit 8. Thereby, ripples may be suppressed to about 1/4 and filter circuits may be miniaturized or made unnecessary, thus high detection accuracy may be provided with less detection time delay
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11220777A JPS5446077A (en) | 1977-09-20 | 1977-09-20 | 3 phase alternating current voltage detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11220777A JPS5446077A (en) | 1977-09-20 | 1977-09-20 | 3 phase alternating current voltage detection circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5446077A true JPS5446077A (en) | 1979-04-11 |
Family
ID=14580924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11220777A Pending JPS5446077A (en) | 1977-09-20 | 1977-09-20 | 3 phase alternating current voltage detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5446077A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04131747A (en) * | 1990-09-21 | 1992-05-06 | Shinetsu Quartz Prod Co Ltd | Atomic absorption spectro photometer and analyzing and measuring method |
-
1977
- 1977-09-20 JP JP11220777A patent/JPS5446077A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04131747A (en) * | 1990-09-21 | 1992-05-06 | Shinetsu Quartz Prod Co Ltd | Atomic absorption spectro photometer and analyzing and measuring method |
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