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公开(公告)号：US09470264B2
公开(公告)日：2016-10-18
申请号：US13995608
申请日：2011-12-15
Applicant: Derek Thomas Wright
Inventor： Derek Thomas Wright
CPC classification number: F16C32/0451 , F16C32/0457 , F16C2300/02 , H03F3/217
Abstract: There is provided a magnetic bearing drive circuit driven from a pair of Direct Current (DC) link voltage rails, said magnetic bearing drive circuit having at least one amplifier providing an output PWM drive signal for driving a magnetic bearing winding, said output PWM drive signal being provided to the magnetic bearing winding through a plurality of drive signal rails, said magnetic bearing drive circuit comprising a pair of voltage offset devices coupled to the DC link voltage rails and arranged to provide a pair of offset catcher voltage rails from the DC link voltage rails, and primary clamping means coupled between each offset catcher voltage rail and a respective one of the drive signal rails.
Abstract translation: 提供由一对直流（DC）链路电压轨驱动的磁轴承驱动电路，所述磁轴承驱动电路具有至少一个放大器，提供用于驱动磁轴承绕组的输出PWM驱动信号，所述输出PWM驱动信号 通过多个驱动信号轨道提供给磁性轴承绕组，所述磁性轴承驱动电路包括耦合到DC链路电压轨的一对电压偏移装置，并被布置成从DC链路电压提供一对偏移捕获器电压轨 轨道和主要夹紧装置，其耦合在每个偏移捕获器电压轨道和相应的一个驱动信号轨道之间。
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公开(公告)号：US5838734A
公开(公告)日：1998-11-17
申请号：US549831
申请日：1996-03-26
Applicant: Derek Thomas Wright
Inventor： Derek Thomas Wright
CPC classification number: H04L27/3455 , H04L27/2657 , H04L27/2679
Abstract: A receiver for orthogonal frequency division multiplexed signals includes means (14) for calculating the (discrete) Fourier Transform of the received signal, and means (20) for calculating the phase error due to local oscillator errors.
Abstract translation: PCT No.PCT / GB94 / 00962 Sec。 371日期：1996年3月26日 102（e）1996年3月26日PCT PCT 1994年5月5日PCT公布。 公开号WO94 / 26046 日期：1994年11月10日用于正交频分复用信号的接收机包括用于计算接收信号的（离散）傅里叶变换的装置（14），以及用于计算由于本地振荡器误差引起的相位误差的装置（20）。
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公开(公告)号：US20130270946A1
公开(公告)日：2013-10-17
申请号：US13995608
申请日：2011-12-15
Applicant: Derek Thomas Wright
Inventor： Derek Thomas Wright
IPC: F16C32/04
CPC classification number: F16C32/0451 , F16C32/0457 , F16C2300/02 , H03F3/217
Abstract: There is provided a magnetic bearing drive circuit driven from a pair of Direct Current (DC) link voltage rails, said magnetic bearing drive circuit having at least one amplifier providing an output PWM drive signal for driving a magnetic bearing winding, said output PWM drive signal being provided to the magnetic bearing winding through a plurality of drive signal rails, said magnetic bearing drive circuit comprising a pair of voltage offset devices coupled to the DC link voltage rails and arranged to provide a pair of offset catcher voltage rails from the DC link voltage rails, and primary clamping means coupled between each off-set catcher voltage rail and a respective one of the drive signal rails.
Abstract translation: 提供由一对直流（DC）链路电压轨驱动的磁轴承驱动电路，所述磁轴承驱动电路具有至少一个放大器，提供用于驱动磁轴承绕组的输出PWM驱动信号，所述输出PWM驱动信号 通过多个驱动信号轨道提供给磁性轴承绕组，所述磁性轴承驱动电路包括耦合到DC链路电压轨的一对电压偏移装置，并被布置成从DC链路电压提供一对偏移捕获器电压轨 轨道和主要夹紧装置，其耦合在每个偏移捕获器电压轨道和相应的一个驱动信号轨道之间。
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公开(公告)号：US4012772A
公开(公告)日：1977-03-15
申请号：US611673
申请日：1975-09-09
Applicant: John Philip Chambers , Derek Thomas Wright
Inventor： John Philip Chambers , Derek Thomas Wright
CPC classification number: H04N11/20
Abstract: Sequential/interlace scan conversion of NTSC or PAL color television signals is effected by an encoder the output of which is connected to the input of scan conversion apparatus. Controllable phase shift means is included in either the color signal input or the subcarrier input of the encoder and is adapted to vary the phase of the modulated subcarrier for each line of the received color signal by an essentially integral number of quarter cycles in dependence upon the line number. The control is such that the conversion apparatus provides an encoded output signal with the color subcarrier in PAL or NTSC format. The invention can also be used in converting between different types of interlace systems.
Abstract translation: NTSC或PAL彩色电视信号的顺序/隔行扫描转换由编码器实现，该编码器的输出连接到扫描转换装置的输入端。 可控相移装置被包括在编码器的彩色信号输入端或子载波输入端中，并且适于根据接收到的彩色信号的基本上整数倍的四分之一周期来改变接收到的彩色信号的每一行的调制子载波的相位 电话号码。 该控制使得转换装置以PAL或NTSC格式提供具有彩色副载波的编码输出信号。 本发明还可以用于不同类型的交错系统之间的转换。
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