JPS55101057A - High-precision current detector - Google Patents
High-precision current detectorInfo
- Publication number
- JPS55101057A JPS55101057A JP718479A JP718479A JPS55101057A JP S55101057 A JPS55101057 A JP S55101057A JP 718479 A JP718479 A JP 718479A JP 718479 A JP718479 A JP 718479A JP S55101057 A JPS55101057 A JP S55101057A
- Authority
- JP
- Japan
- Prior art keywords
- current
- input
- feedback
- voltage
- detector
- 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
Abstract
PURPOSE: To improve detection precision while expanding an operating range by canceling an influence of an input current on a current detector by increasing and supplying the output signal of the detector to an input side through a negative feedback loop.
CONSTITUTION: Once input current i1 flows through input windings 3 and 4, output voltage Δe is developed across current detector 20. This voltage Δe is amplified by amplifier 30 and applied to feedback windings 31 and 32 to flow current i0. When feedback current i0 is not flowed, a balance is kept at point (b), but when current i0 is flowed, it flows so that calcel magnetomotive force of input current i1, and a balance is kept at point (a) where voltage Δe is at a minimum. Flowing feedback current i0 through output resistance 33 develops output voltage e0 in proportion to input current i1. An operating point is constant at (a) all the time without reference to the magnitude of input current i1, so that high precision can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP718479A JPS55101057A (en) | 1979-01-26 | 1979-01-26 | High-precision current detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP718479A JPS55101057A (en) | 1979-01-26 | 1979-01-26 | High-precision current detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55101057A true JPS55101057A (en) | 1980-08-01 |
Family
ID=11658965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP718479A Pending JPS55101057A (en) | 1979-01-26 | 1979-01-26 | High-precision current detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55101057A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01121869U (en) * | 1988-02-12 | 1989-08-18 | ||
US8421452B2 (en) | 2010-02-12 | 2013-04-16 | Alps Green Devices Co., Ltd. | Current sensor and battery with current sensor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4918375A (en) * | 1972-06-10 | 1974-02-18 |
-
1979
- 1979-01-26 JP JP718479A patent/JPS55101057A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4918375A (en) * | 1972-06-10 | 1974-02-18 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01121869U (en) * | 1988-02-12 | 1989-08-18 | ||
US8421452B2 (en) | 2010-02-12 | 2013-04-16 | Alps Green Devices Co., Ltd. | Current sensor and battery with current sensor |
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