| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | Current amplifying element and current amplification method | US12376113 | 2007-08-02 | US07902919B2 | 2011-03-08 | Katsuhiko Higuchi; Masahiko Higuchi |
| A current amplifying element that operates at a higher speed than conventional semiconductor devices is provided. An input current flows through an input current path 60 in a direction X, and a magnetic field generated from a magnet 90 is applied in a direction Z which is perpendicular to the direction X. An output current path 70 is formed under the input current path 60 with an insulator 80 interposed therebetween. Since the direction in which an output current flows is perpendicular to both the input current and the magnetic field, the current is amplified by the galvanomagnetic effects produced by the input current and the magnetic field. | ||||||
| 62 | Hall effect isolation amplifier | US746860 | 1985-06-20 | US4616188A | 1986-10-07 | Robert M. Stitt; Rodney T. Burt |
| An isolation amplifier circuit is described that utilizes a magnetic field in combination with a Hall effect device to isolate input signals and output signals. The input signal is applied to a conducting coil that produces a magnetic field in a Hall effect material through which current is flowing. Because of the Hall effect, terminals on the sides of the Hall effect material can provide a voltage difference. This voltage difference is amplified and applied to a second conducting coil. The second conducting coil is adapted to provide a magnetic field in the opposite direction from the magnetic field produced by the input signal. When the magnetic fields are identical, no difference in current flowing through the two terminals will be present. The output signal of the difference amplifier circuit will be a function of the input signal. According to a second embodiment, apparatus is included for cancelling ambient magnetic fields. A second isolation amplifier circuit is arranged to have a spatial orientation rotated 180.degree. from a first isolation amplifier. With this configuration, ambient magnetic fields will have cancelling effects. The Hall effect device can be implemented in a PNP transistor with a split collector. The isolation amplifier can be fabricated with monolithic technology. | ||||||
| 63 | Circuit for processing hall generator output signals | US3622898D | 1970-05-20 | US3622898A | 1971-11-23 | SALMON ISIDORE WILLIAM |
| A Hall device is capacitively connected across direct and inverting inputs of a differential-operational amplifier.
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| 64 | Driftless direct current amplifier | US3443234D | 1965-10-22 | US3443234A | 1969-05-06 | BIZET PIERRE |
| 65 | Hall-voltage generator unit with amplifying action,and method of producing such unit | US61908466 | 1966-12-01 | US3413712A | 1968-12-03 | ENGEL WALTER |
| 66 | Magneto-resistive amplifier | US17789462 | 1962-03-06 | US3233187A | 1966-02-01 | RAFFEL JACK I |
| 67 | Magneto-resistance nonreciprocal signal amplifier | US9190261 | 1961-02-27 | US3185937A | 1965-05-25 | CHANG KERN K N |
| 68 | Device for amplifying, producing or modulating electrical oscillations | US74223958 | 1958-06-16 | US3102959A | 1963-09-03 | GESINUS DIEMER |
| 69 | Hall voltage generators for amplifier and oscillator purposes | US72417758 | 1958-03-26 | US2988707A | 1961-06-13 | FRIEDRICH KUHRT; KARL MAAZ |
| 70 | Magnetoresistive bridge circuit | US65080257 | 1957-04-04 | US2982906A | 1961-05-02 | MILTON GREEN |
| 71 | Hall effect device | US70538057 | 1957-12-26 | US2980860A | 1961-04-18 | ROSS MACDONALD JAMES |
| 72 | Hybrid system | US59284556 | 1956-06-21 | US2924673A | 1960-02-09 | SIMON DUINKER |
| 73 | Hall effect amplifier | US57895956 | 1956-04-18 | US2877309A | 1959-03-10 | HENISCH HEINZ K |
| 74 | Phonograph pickup | US55419255 | 1955-12-20 | US2866857A | 1958-12-30 | ANDREWS DALLAS R |
| 75 | Hall generators of increased sensitivity | US58220656 | 1956-05-02 | US2814015A | 1957-11-19 | FRIEDRICH KUHRT |
| 76 | Amplifying system | US22917551 | 1951-05-31 | US2752559A | 1956-06-26 | LIPKIN DANIEL M |
| 77 | Magnetostrictive amplifier | US23712751 | 1951-07-17 | US2738386A | 1956-03-13 | ROBERTS WALTER VAN B |
| 78 | Rectifier and converter using superconduction | US17771450 | 1950-08-04 | US2666884A | 1954-01-19 | ARVID ERICSSON ERIC; OSSIAN JORGENSEN ANDERS; LAMBERT OVERBY SUNE |
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