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71. 发明授权

US4795962A Floating driver circuit and a device for measuring impedances of electrical components 失效
标题翻译：浮动驱动器电路和用于测量电气部件阻抗的装置
公开(公告)号：US4795962A
公开(公告)日：1989-01-03
申请号：US93845
申请日：1987-09-04
申请人： Kouichi Yanagawa , Kazuyuki Yagi
发明人： Kouichi Yanagawa , Kazuyuki Yagi
IPC分类号： G01R27/02 , G01R27/00 , H03H11/32
CPC分类号： G01R27/00
摘要： A floating driver circuit. A power supply is connected through a signal source to an amplifier's input terminal. The power supply is also connected to a pair of power supply terminals of the amplifier, via at least one resistor for each power supply terminal, so that direct current flows from the power supply into the power supply terminals. Further, at least one capacitor is connected to each power supply terminal. A cable, preferably coaxial, has first and second conductors. The first conductor is connected to a signal output terminal of the amplifier. The second conductor is connected to the power supply terminals through the capacitors. A pair of these circuits is combined at opposite ends of an electrical component to enable measurement of the impedances thereof.
摘要翻译：一个浮动驱动电路。电源通过信号源连接到放大器的输入端。电源还通过用于每个电源端子的至少一个电阻器连接到放大器的一对电源端子，使得直流电流从电源流入电源端子。此外，至少一个电容器连接到每个电源端子。优选地，同轴的电缆具有第一和第二导体。第一导体连接到放大器的信号输出端。第二导体通过电容器连接到电源端子。一对这些电路在电气部件的相对端组合，以便能够测量其阻抗。

72. 发明授权

US3374448A High efficiency contiguous comb filter 失效
标题翻译：高效连续梳状滤波器
公开(公告)号：US3374448A
公开(公告)日：1968-03-19
申请号：US36977264
申请日：1964-05-25
申请人： DAMON ENG INC
发明人： HURTIG CARL R
IPC分类号： H03H7/42 , H03H7/46 , H03H9/00 , H03H9/54 , H03H9/60 , H03H11/32
CPC分类号： H03H9/0095 , H03H7/46 , H03H9/60

73. 发明授权

US2788398A Phase converter circuit 失效
标题翻译：相变电路
公开(公告)号：US2788398A
公开(公告)日：1957-04-09
申请号：US45267954
申请日：1954-08-27
申请人： RCA CORP
发明人： ABRAHAM HAR EL
IPC分类号： H03F3/32 , H03H11/32
CPC分类号： H03H11/32

74. 发明授权

US2540817A Band-pass coupling network 失效
标题翻译：带通耦合网络
公开(公告)号：US2540817A
公开(公告)日：1951-02-06
申请号：US72520347
申请日：1947-01-30
申请人： PHILCO CORP
发明人： FORSTER WILLIAM H
IPC分类号： H03H11/32
CPC分类号： H03H11/32

75. 发明授权

US2464594A Phase and amplitude control circuit for wide band amplifiers 失效
标题翻译：宽带放大器的相位和幅度控制电路
公开(公告)号：US2464594A
公开(公告)日：1949-03-15
申请号：US66003046
申请日：1946-04-06
申请人： BELL TELEPHONE LABOR INC
发明人： MAHONEY JR JOHN J
IPC分类号： H03F3/32 , H03G3/06 , H03H11/18 , H03H11/32 , H03K5/02
CPC分类号： H03H11/32 , H03G3/06 , H03H11/18 , H03K5/02

76. 发明授权

US2411517A Coupling amplifier 失效
标题翻译：耦合放大器
公开(公告)号：US2411517A
公开(公告)日：1946-11-26
申请号：US47258943
申请日：1943-01-16
申请人： STANDARD TELEPHONES CABLES LTD
发明人： BUSIGNIES HENRI G
IPC分类号： H03H11/32
CPC分类号： H03H11/32

77. 发明授权

US2396531A Electrical coupling circuits 失效
标题翻译：电耦合电路
公开(公告)号：US2396531A
公开(公告)日：1946-03-12
申请号：US49268243
申请日：1943-06-29
申请人： RCA CORP
发明人： REISKIND HILLEL I , ALEXIS BADMAIEFF
IPC分类号： H03H11/32
CPC分类号： H03H11/32

78. 发明授权

US1997665A Amplifier 失效
公开(公告)号：US1997665A
公开(公告)日：1935-04-16
申请号：US66020833
申请日：1933-03-10
申请人： HAZELTINE CORP
发明人： WHEELER HAROLD A
IPC分类号： H03F3/28 , H03F3/32 , H03H11/32
CPC分类号： H03H11/32 , H03F3/28

79. 发明授权

US11528012B2 Active balun circuit, power amplifier circuit, and power amplifier module 有权
公开(公告)号：US11528012B2
公开(公告)日：2022-12-13
申请号：US17089766
申请日：2020-11-05
申请人： Murata Manufacturing Co., Ltd.
发明人： Takayuki Tsutsui , Satoshi Tanaka , Kiichiro Takenaka , Masatoshi Hase
IPC分类号： H03F3/21 , H03H11/32 , H03F3/45
摘要： An active balun circuit includes first and second transistors having emitters electrically coupled to each other and configured to output differential signals and a circuit element coupled between the connection point of the emitter of the first transistor and the emitter of the second transistor and a reference potential. The impedance of the circuit element at a particular frequency of the input signal appears significantly larger than impedances at other frequencies. An input signal from an input terminal is inputted to the base of the first transistor. The reference potential is applied to the base of the second transistor. A supply voltage is applied to the collector of the first transistor and the collector of the second transistor. A signal from the collector of the first transistor and a signal from the collector of the second transistor are outputted as the differential signals.

80. 发明授权

US11201603B2 Active clamp capacitor balancing 有权
公开(公告)号：US11201603B2
公开(公告)日：2021-12-14
申请号：US16905469
申请日：2020-06-18
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Pei-Hsin Liu , Richard Lee Valley , Bharath Balaji Kannan
IPC分类号： H03H11/32 , H03K3/037 , H03K5/24 , H02M3/28
摘要： In some examples, a circuit includes an input circuit, an output circuit, an auxiliary circuit, and a balancing circuit. The input circuit comprises a primary capacitor coupled to primary windings of a transformer. The output circuit comprises a secondary capacitor coupled to secondary windings of the transformer, wherein the secondary windings are coupled to the primary windings. The auxiliary circuit comprises auxiliary windings coupled to the primary windings. The balancing circuit is coupled to the output circuit, the auxiliary circuit, and the input circuit. The balancing circuit is configured to balance a voltage across the primary capacitor with a voltage across the secondary capacitor.

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