| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Magnetic amplifier control system | US12655949 | 1949-11-10 | US2554203A | 1951-05-22 | MORGAN RAYMOND E |
| 42 | Magnetic amplifier | US3810248 | 1948-07-10 | US2548049A | 1951-04-10 | OLSON ROBERT W |
| 43 | Variable output transformer | US75955347 | 1947-07-08 | US2535154A | 1950-12-26 | SOL OESTREICHER |
| 44 | Magnetic amplifier for reversible currents | US76997747 | 1947-08-21 | US2504675A | 1950-04-18 | HARRY FORSSELL |
| 45 | Direct cubbent batcjbated induct | US22768D | USRE22768E | 1946-06-25 | ||
| 538,237. Non-contact-making relays. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Feb. 26, 1940, No. 3566. Convention date, March 3, 1939. [Class 40 (iv)] [Also in Group XXXV] An inductance 1 having a saturating winding 14 energized by a controlling direct current and a reaction winding 2 energized by rectifying the current in the inductance winding is arranged to act as a time-delay relay by including in the D.C. circuit an impedance delaying the rise of saturating current. Thus a condenser may be connected in parallel with either the control winding 1 or the reaction winding 2. An inductance may be connected in series with the winding, both being shunted by a resistance. A temperature-dependent resistance may be placed in series or parallel with the winding according as it has a negative or positive temperature co-efficient. The resistance may be heated from the exterior. Fig. 4 shows two mutually heated resistances 18, 19 in separate opposed saturation winding circuits arranged to produce a complex time-delay action. Resistances with positive and negative temperature co-efficients may be included in a bridge circuit with a saturation winding. Specifications 499,960 and 524,501, [Group XXXV], are referred to. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 564,925, [Group XXXV]. This subject-matter does not appear in.the Specification as accepted. | ||||||
| 46 | Amplifying and detecting system | US28333539 | 1939-07-08 | US2341526A | 1944-02-15 | BREITENSTEIN VICTOR W |
| 47 | Direct current saturated inductance with relay action | US32275040 | 1940-03-07 | US2337253A | 1943-12-21 | UNO LAMM |
| 538,237. Non-contact-making relays. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Feb. 26, 1940, No. 3566. Convention date, March 3, 1939. [Class 40 (iv)] [Also in Group XXXV] An inductance 1 having a saturating winding 14 energized by a controlling direct current and a reaction winding 2 energized by rectifying the current in the inductance winding is arranged to act as a time-delay relay by including in the D.C. circuit an impedance delaying the rise of saturating current. Thus a condenser may be connected in parallel with either the control winding 1 or the reaction winding 2. An inductance may be connected in series with the winding, both being shunted by a resistance. A temperature-dependent resistance may be placed in series or parallel with the winding according as it has a negative or positive temperature co-efficient. The resistance may be heated from the exterior. Fig. 4 shows two mutually heated resistances 18, 19 in separate opposed saturation winding circuits arranged to produce a complex time-delay action. Resistances with positive and negative temperature co-efficients may be included in a bridge circuit with a saturation winding. Specifications 499,960 and 524,501, [Group XXXV], are referred to. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 564,925, [Group XXXV]. This subject-matter does not appear in.the Specification as accepted. | ||||||
| 48 | Power amplifier | US32770240 | 1940-04-03 | US2287754A | 1942-06-23 | GUSTAV BARTH |
| 49 | Power amplifier | US29096839 | 1939-08-19 | US2257031A | 1941-09-23 | GUSTAV BARTH |
| 50 | Magnetic amplifier | US23586238 | 1938-10-19 | US2229952A | 1941-01-28 | WHITELEY AUSTYN L; LUDBROOK LESLIE C |
| 51 | Electric circuit control means | US64864232 | 1932-12-23 | US2040684A | 1936-05-12 | ARAM BOYAJIAN |
| 52 | Magnetic amplifying and control system | US73655834 | 1934-07-23 | US2027312A | 1936-01-07 | FITZ GERALD ALAN S |
| 53 | Magnetic amplifier | US67678533 | 1933-06-21 | US2027311A | 1936-01-07 | FITZ GERALD ALAN S |
| 54 | Electrical translating apparatus | US37702029 | 1929-07-09 | US1878764A | 1932-09-20 | DOWLING PHILIP H |
| 55 | Electrical translating apparatus | US49274630 | 1930-11-01 | US1862203A | 1932-06-07 | SORENSEN ANDREW J; DOWLING PHILIP H |
| 56 | Electrical translating apparatus | US42656430 | 1930-02-07 | US1824577A | 1931-09-22 | SORENSEN ANDREW J |
| 57 | Means for controlling alternating currents | US22968618 | 1918-04-20 | US1328473A | 1920-01-20 | ALEXANDERSON ERNST F W |
| 58 | Controlling alternating currents. | US1912735359 | 1912-12-07 | US1206643A | 1916-11-28 | ALEXANDERSON ERNST F W |
| 59 | POWER FLOW CONTROL USING DISTRIBUTED SATURABLE REACTORS | US13984196 | 2012-02-22 | US20130320940A1 | 2013-12-05 | 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. | ||||||
| 60 | Low current linearization of magnetic amplifier for DC transducer | US51269 | 1979-06-22 | US4262259A | 1981-04-14 | Robert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch; Satoshi Nagano |
| A magnetic amplifier having two saturable reactor cores with a separate excitation winding on each connected in series opposition, a common control winding and a common output winding, is adapted for use as a low level signal transducer by exciting the separate excitation windings in push-pull mode through a center tapped transformer, and including at least one diode in series with a load resistor connected to the output winding. A resistor in series with the output winding and load resistor is connected between the center tap of the excitation transformer and the connection between the two excitation windings of the saturable cores. This series resistor provides a return current path for the output winding and allows the excitation windings of the saturable cores to operate as primary windings of transformers. | ||||||
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