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US3886446A
Expired / Lapsed
US
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Digital indicator of the electromotive force of a hall-effect device which eliminates the influence of the non equipotential voltage
Assignee: Individual
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Filing: 1972-10-16
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Granted: 1975-05-27
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Expires: 1992-10-16
Abstract
Abstract A digital indicating instrument for the electromotive force of a Hall-effect device, wherein pairs of opposed electrodes are alternatingly connected by means of a selector switch to a voltage supply source and to a ''''voltage-code'''' converter, whereas a circuit determining the moment of completion of a coding cycle, associated with the voltage-code converter and with the selector switch, controls the mode of the operation thereof and provides for measurement of the electromotive force of the Hall device for at least two coding cycles. The disclosed digital indicating instrument completely eliminates the influence of the non-equipotentiality voltage upon the results of the measurement of the electromotive force of the Hall device; it provides for indication of the true value of the electromotive force by a completely automatic measurement and indication process.
Inventors
- 👤 Sergei Glebovich Laranov
- 👤 Voldmir Vasilievich Braiko
- 👤 Jury Trofimovich Chigirin
- 👤 Vladimir Petrovich Belousov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:23
CPC Classifications
G; G01; G01R; G01R15/00; G01R15/14; G01R15/20; G01R15/202; G01R33/00; G01R33/02; G01R33/06; G01R33/07
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
215 words
A digital indicating instrument for indicating the electromotive force of a Hall-effect device having at least two pairs of opposed electrodes, comprising a selector switch electrically connected with said pairs of said electrodes; a voltage supply source connected to said selector switch to be alternatingly connected to one then to the other of said two pairs of said electrodes by means of said selector switch; a voltage-code converter connected to said selector switch to be alternatingly connected to one then to the other of said two pairs of said electrodes, the voltage source and the voltage-code converter being alternately connected to opposite pairs of electrodes by the connections of the selector switch; a numerical indicator having an input connected to the output of said voltage-code converter; circuit means determining the moment of completion of a coding cycle of said voltage-code converter and generating a signal indicative thereof, the input of said circuit means being connected to said voltage-code converter, the output of said circuit means being connected to said selector switch to switch the connections of the opposite pairs of said electrodes and also to said converter to begin a new coding cycle, the indicator, following the second coding cycle, indicating the electromotive force of the Hall-effect device, while eliminating the influence of non-equipotential voltage.
Claim 2
Dependent Claim
215 words
A digital indicating instrument for indicating the electromotive force of a Hall-effect device having at least two pairs of opposed electrodes, comprising a selector switch electrically connected with said pairs of said electrodes; a voltage supply source connected to said selector switch to be alternatingly connected to one then to the other of said two pairs of said electrodes by means of said selector switch; a voltage-code converter connected to said selector switch to be alternatingly connected to one then to the other of said two pairs of said electrodes, the voltage source and the voltage-code converter being alternately connected to opposite pairs of electrodes by the connections of the selector switch; a numerical indicator having an input connected to the output of said voltage-code converter; circuit means determining the moment of completion of a coding cycle of said voltage-code converter and generating a signal indicative thereof, the input of said circuit means being connected to said voltage-code converter, the output of said circuit means being connected to said selector switch to switch the connections of the opposite pairs of said electrodes and also to said converter to begin a new coding cycle, the indicator, following the second coding cycle, indicating the electromotive force of the Hall-effect device, while eliminating the influence of non-equipotential voltage.
Claim 3
Dependent Claim
85 words
A digital indicating instrument as claimed in claim 1, further comprising a phase-responsive member adapted to develop a control signal to be sent to said voltage-code converter, when the voltage of the non-equipotentiality of said Hall-effect device becomes greater than the electromotive force thereof, one input of said phase-responsive member being connected to the output of said selector switch, the other input of said phase-responsive member being connected to said voltage supply source, the output of said phase-responsive member being connected to said voltage-code converter.
References Cited (Backward Citations)
US3064193A
Cited
US3416010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |