| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | HARMONIC FILTER FOR MAGNETIC AMPLIFIER | US15146671 | 2016-05-04 | US20170324389A1 | 2017-11-09 | Aleksandar D. Dimitrovski |
| A magnetic amplifier includes a permeable core having multiple legs. Control windings wound around separate legs are spaced apart from each other and connected in series in an anti-symmetric relation. Harmonic filters are positioned adjacent to the control windings to attenuate even-ordered harmonics generated by an alternating load current passing through a portion of the legs. The control windings are configured to bias magnetic flux arising from a control current flowing through one of the control windings which is substantially equal to the biasing magnetic flux flowing into a second control winding. The flow of the control current through each of the control windings changes the reactance of the permeable core reactor by driving those portions of the permeable core that convey the biasing magnetic flux in the permeable core into saturation. The phasing of the control winding limits a voltage induced in the plurality of control windings caused by a magnetic flux passing around a portion of the permeable core. | ||||||
| 102 | Power flow control using distributed saturable reactors | US13984196 | 2012-02-22 | US09261890B2 | 2016-02-16 | Aleksandar D. Dimitrovski |
| A magnetic amplifier includes a saturable core having a plurality of legs. Control windings wound around separate legs are spaced apart from each other and connected in series in an anti-symmetric relation. The control windings are configured in such a way that a biasing magnetic flux arising from a control current flowing through one of the plurality of control windings is substantially equal to the biasing magnetic flux flowing into a second of the plurality of control windings. The flow of the control current through each of the plurality of control windings changes the reactance of the saturable core reactor by driving those portions of the saturable core that convey the biasing magnetic flux in the saturable core into saturation. The phasing of the control winding limits a voltage induced in the plurality of control windings caused by a magnetic flux passing around a portion of the saturable core. | ||||||
| 103 | Circuit and method for regulating output voltage of a switch mode power supply having a current mode magnetic amplifier | US367283 | 1989-06-16 | US4931920A | 1990-06-05 | Mark P. Barker |
| A circuit for regulating the output voltage of a switched mode power supply having a current mode magnetic amplifier includes a current transformer for sensing current flow through the magnetic amplifier. The sensed current is provided to a circuit which includes a resistor for developing a pulsating voltage and a storage capacitor for converting the pulsating voltage to a tracking voltage and storing the tracking voltage. The tracking voltage and a reference voltage are provided to a differential amplifier, the output of which operates a transistor which controls the operation of the magnetic amplifier, thereby regulating the output voltage of the power supply. | ||||||
| 104 | Series resonant magnetic amplifier power supply | US376119 | 1989-07-06 | US4916590A | 1990-04-10 | Alan W. Petersen |
| A series resonant power supply is switched at a constant frequency above the audio range, in which a magnetic amplifier is used to control the magnitude of the output voltage. It can be run silently, while providing high power at relatively low cost. The power supply includes a full or half bridge rectifying circuit with first and second common terminals. A magnetic amplifier is coupled from the first common terminal to a second common terminal. The magnetic amplifier includes a first primary coil for conducting current from the first common terminal to the second terminal. A secondary coil for generating an output current, and a control coil receiving a control current are coupled with the first primary coil. A second primary coil is connected to conduct current from the second common terminal to the first common terminal. A second secondary coil and a second control coil are coupled with the second primary coil. The current is induced in the first and second secondary coils in response to current in the control coils, and current through the respective primary coils. An output circuit is coupled across the first and second secondary coils for converting the output of the magnetic amplifier to the regulated DC output. | ||||||
| 105 | Magnetic amplifier arrangements | US398430 | 1973-09-18 | US4019123A | 1977-04-19 | Arthur Maskery |
| A magnetic amplifier is disclosed which has improved fail-safe characteristics, the amplifier has a pair of saturable magnetizable cores with d.c. control winding turns on each which are mutually decoupled in known manner with regard to input a.c. windings and the a.c. windings also have linked with them a further magnetizable core, the output from the transductor being derived from a secondary winding on the further cores. The arrangement enables various applications of a magnetic amplifier to be made which might otherwise be objectionable by reason of the reduced operational failure-to-safety characteristics. These applications include use in a brake control circuit. | ||||||
| 106 | Phase adapter | US32974873 | 1973-02-05 | US3809980A | 1974-05-07 | NOTTINGHAM F |
| A device is disclosed for converting single-phase power to three-phase power. The device includes an autotransformer and a variable impedance device for adjusting the magnitude and phase of the autotransformer output. A first regulator circuit, including comparison, amplifier, phase shifting and SCR stages, is provided to regulate the impedance of the variable impedance device. A second regulator circuit, including comparison, control and power output stages, is also included to provide the device with the capability of compensating for changing power factors in three-phase loads coupled to it.
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| 107 | Control systems for direct current electric motors | US3441827D | 1966-07-13 | US3441827A | 1969-04-29 | PAYNE IVAN SALISBURY |
| 1,136,253. Magnetic amplifiers. LANSING BAGNALL Ltd. 12 July, 1966 [14 July, 1965], No. 29898/65. Heading H3B, [Also in Divisions G3, H1 and H2] A transductor, for applying a variable proportion of the pulses from a multi-vibrator and shaping circuit to the firing circuit of a thyristor in circuit with an electric motor, comprises cores 12, 13 separated by air gaps 16, 17 wich a reactance winding 18 around the core 12. Around the core 13 there is a single-turn winding 19 carrying the motor current. In the main air gap 14 there is a movable permanent magnet 22 coupled to a control pedal for the motor. Initially the transductor is fully saturated by the control magnet, thus inhibiting pulses to the thyristor, until displacement of the magnet from the position between poles 15 reduces the saturation and increases the pulse repetition rate. The transductor also tends to be saturated by the winding 19, to prevent the supply of "on" pulses until the motor current decreases to a safe value. The winding 18 is connected across the base and emitter of a transistor and is energized by pulses from the shaping circuit, the arrangement being such that the transistor is cut-off to prevent the application of firing pulses to the thyristor when the impedance of the winding 18 is low due to saturation. | ||||||
| 108 | Fail safe magnetic amplifier voltage control system | US51455865 | 1965-12-17 | US3389330A | 1968-06-18 | DEMEUR JEAN |
| 109 | Sign detecting system | US39188564 | 1964-08-25 | US3385976A | 1968-05-28 | SHINTARO OSHIMA; HAJIME ENOMOTO; SHIYOJI WATANABE; YASUO KOSEKI |
| 110 | Symmetrical magnetic amplifier | US33486863 | 1963-12-31 | US3345577A | 1967-10-03 | CHIYOJI KAWAGUCHI |
| 111 | Voltage stabilizing circuits | US24584262 | 1962-12-19 | US3222592A | 1965-12-07 | KELLOGG HARRY L |
| 112 | Tunnel diode-saturable reactor control circuit | US3763160 | 1960-06-21 | US3214604A | 1965-10-26 | MORGAN RAYMOND E |
| 113 | Magnetic amplifier with shunt reset circuit | US9814961 | 1961-03-24 | US3138753A | 1964-06-23 | COVERT PAUL W |
| 114 | Capacitor charging magnetic amplifier | US79142959 | 1959-02-05 | US3078408A | 1963-02-19 | COLTERJOHN JR WALTER L |
| 115 | Magnetic amplifier | US73792758 | 1958-05-26 | US3015073A | 1961-12-26 | MICHEL MAMON |
| 116 | D. c. magnetic amplifier | US62460156 | 1956-11-27 | US3014185A | 1961-12-19 | JOSEPH MONTNER |
| 117 | Carrier operated transverse magnetic amplifier with cancellation of interaction between input and output circuits | US49485255 | 1955-03-17 | US2970224A | 1961-01-31 | LIPKIN DANIEL M; SPENCER RICHARD W |
| 118 | Magnetic amplifier devices | US39056153 | 1953-11-06 | US2930983A | 1960-03-29 | LOUIS FEIN |
| 119 | Radio frequency or carrier type transverse magnetic amplifier using squarewave power | US49494755 | 1955-03-17 | US2888637A | 1959-05-26 | LIPKIN DANIEL M |
| 120 | Heater control circuits | US67364757 | 1957-07-23 | US2872556A | 1959-02-03 | OBERMAIER ALFRED A |
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