GB805926A - Improvements relating to the measurement of magnetic fields - Google Patents
Improvements relating to the measurement of magnetic fieldsInfo
- Publication number
- GB805926A GB805926A GB37449/55A GB3744955A GB805926A GB 805926 A GB805926 A GB 805926A GB 37449/55 A GB37449/55 A GB 37449/55A GB 3744955 A GB3744955 A GB 3744955A GB 805926 A GB805926 A GB 805926A
- Authority
- GB
- United Kingdom
- Prior art keywords
- collector
- current
- field
- emitter
- magnetic field
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/07—Hall effect devices
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
805,926. Electric tests. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Dec. 30, 1955 [Jan. 7, 1955], No. 37449/55. Class 37. The strength of a magnetic field is measured by means of a transistor which is positioned in the field so that current carriers injected by the emitter are deflected away from the collector. The reduction in collector current is then an indication of field strength. In the particular example described, the transistor is of N-type germanium the emitter and collector either forming point contacts or being connected to p-n junctions formed by local contamination. The collector current may be observed on a milliammeter or compared by means of a galvanometer with a voltage tapped across a potentiometer. In the absence of a magnetic field the galvanometer current is regulated to zero by means of the potentiometer. When the field is applied the meter deflects and may be calibrated in terms of field strength. The D.C. supply to either the emitter or collector may be replaced by an A.C. one. An arrangement is described with reference to Fig. 3, wherein the collector is in two parts 41, 4<SP>11</SP>, and the magnetic field is arranged to vary the current distribution between them.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR805926X | 1955-01-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB805926A true GB805926A (en) | 1958-12-17 |
Family
ID=9251588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37449/55A Expired GB805926A (en) | 1955-01-07 | 1955-12-30 | Improvements relating to the measurement of magnetic fields |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB805926A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1117778B (en) * | 1958-07-29 | 1961-11-23 | Jun Ichi Nishizawa Dr Ing | Semiconductor arrangement with a current-dependent inductance |
| DE1206080B (en) * | 1964-08-20 | 1965-12-02 | Telefunken Patent | High sensitivity transistor magnetic field probe |
| US3525932A (en) * | 1968-01-25 | 1970-08-25 | Honeywell Inc | Magnetometer utilizing a grooved reverse biased junction diode |
| US5134371A (en) * | 1989-01-18 | 1992-07-28 | Nippondenso Co., Ltd. | Magnetic detection device using an oscillator whose detection element is a magnetoresitance effective element |
| US5568071A (en) * | 1990-01-25 | 1996-10-22 | Nippon Soken Inc. | Pulse phase difference encoding circuit |
| US5686835A (en) * | 1989-01-18 | 1997-11-11 | Nippondenso Co., Ltd | Physical quantity detection device for converting a physical quantity into a corresponding time interval |
-
1955
- 1955-12-30 GB GB37449/55A patent/GB805926A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1117778B (en) * | 1958-07-29 | 1961-11-23 | Jun Ichi Nishizawa Dr Ing | Semiconductor arrangement with a current-dependent inductance |
| DE1206080B (en) * | 1964-08-20 | 1965-12-02 | Telefunken Patent | High sensitivity transistor magnetic field probe |
| US3525932A (en) * | 1968-01-25 | 1970-08-25 | Honeywell Inc | Magnetometer utilizing a grooved reverse biased junction diode |
| US5134371A (en) * | 1989-01-18 | 1992-07-28 | Nippondenso Co., Ltd. | Magnetic detection device using an oscillator whose detection element is a magnetoresitance effective element |
| US5359287A (en) * | 1989-01-18 | 1994-10-25 | Nippondenso Co., Ltd. | Magnetic detecting circuit having magnetoresistance effective elements oriented in at least two different directions |
| US5686835A (en) * | 1989-01-18 | 1997-11-11 | Nippondenso Co., Ltd | Physical quantity detection device for converting a physical quantity into a corresponding time interval |
| US5568071A (en) * | 1990-01-25 | 1996-10-22 | Nippon Soken Inc. | Pulse phase difference encoding circuit |
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