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1.发明授权Resonant converter for achieving low common-mode noise, along with isolated power supply and method employing the same 有权用于实现低共模噪声的谐振转换器，以及隔离电源及采用它的方法公开(公告)号：US09240729B2
公开(公告)日：2016-01-19
申请号：US12495770
申请日：2009-06-30
IPC分类号： H02M7/5383 , H02M3/337 , H02M7/48 , H02M1/12 , H02M7/5387 , H02M1/00
CPC分类号： H02M3/3376 , H02M2001/0058 , H02M2001/123 , H02M2007/4815 , H02M2007/53878 , Y02B70/1433 , Y02B70/1441 , Y02B70/1491
摘要： Embodiments are described for reducing common-mode current in electronic devices. In the various embodiments, a resonant converter is employed, for example in a power supply, and the resonant converter is driven by a DC input to generate an AC primary voltage on the primary windings of a power transformer. The DC input may be derived from an AC line voltage or a DC-to-DC converter. The AC primary voltage drives the primary winding of the transformer to generate an AC secondary voltage on at least one secondary winding of the transformer. The AC secondary voltage may then drive a rectifier, which in turn drives a low-pass filter to produce a DC output voltage. Phase-shift modulation is employed which, in conjunction with the resonant converter, applies a sinusoidal waveform to the primary of the transformer resulting in a reduced amount of common-mode current injected onto the secondary.
摘要翻译： 描述了用于降低电子设备中的共模电流的实施例。 在各种实施例中，例如在电源中采用谐振转换器，并且谐振转换器由DC输入驱动以在电力变压器的初级绕组上产生AC初级电压。 DC输入可以从AC线电压或DC-DC转换器导出。 交流一次电压驱动变压器的初级绕组，以在变压器的至少一个次级绕组上产生交流二次电压。 然后，交流二次电压可以驱动整流器，整流器又驱动低通滤波器以产生直流输出电压。 采用相移调制，其结合谐振转换器，将正弦波形施加到变压器的初级，导致注入次级的共模电流减少。
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2.发明申请RESONANT CONVERTER FOR ACHIEVING LOW COMMON-MODE NOISE, ALONG WITH ISOLATED POWER SUPPLY AND METHOD EMPLOYING THE SAME 有权用于实现低共模噪声的共振转换器，具有隔离电源及使用其的方法公开(公告)号：US20100328974A1
公开(公告)日：2010-12-30
申请号：US12495770
申请日：2009-06-30
IPC分类号： H02M7/06
CPC分类号： H02M3/3376 , H02M2001/0058 , H02M2001/123 , H02M2007/4815 , H02M2007/53878 , Y02B70/1433 , Y02B70/1441 , Y02B70/1491
摘要： Embodiments are described for reducing common-mode current in electronic devices. In the various embodiments, a resonant converter is employed, for example in a power supply, and the resonant converter is driven by a DC input to generate an AC primary voltage on the primary windings of a power transformer. The DC input may be derived from an AC line voltage or a DC-to-DC converter. The AC primary voltage drives the primary winding of the transformer to generate an AC secondary voltage on at least one secondary winding of the transformer. The AC secondary voltage may then drive a rectifier, which in turn drives a low-pass filter to produce a DC output voltage. Phase-shift modulation is employed which, in conjunction with the resonant converter, applies a sinusoidal waveform to the primary of the transformer resulting in a reduced amount of common-mode current injected onto the secondary.
摘要翻译： 描述了用于降低电子设备中的共模电流的实施例。 在各种实施例中，例如在电源中使用谐振转换器，并且谐振转换器由DC输入驱动以在电力变压器的初级绕组上产生AC初级电压。 DC输入可以从AC线电压或DC-DC转换器导出。 交流一次电压驱动变压器的初级绕组，以在变压器的至少一个次级绕组上产生交流二次电压。 然后，交流二次电压可以驱动整流器，整流器又驱动低通滤波器以产生直流输出电压。 采用相移调制，其结合谐振转换器，将正弦波形施加到变压器的初级，导致注入次级的共模电流减少。
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公开(公告)号：US4357600A
公开(公告)日：1982-11-02
申请号：US205818
申请日：1980-11-10
CPC分类号： H03M1/52
摘要： A multislope A/D converter is presented which employs a multislope integration technique enabling the use of a single comparator to detect polarity changes in the integrator output voltage. The A/D converter integrates a test signal during a run-up interval and integrates a discharging signal during the run-up interval as well as during a pre-run-down interval and a run-down interval subsequent to the run-up interval. The magnitude and polarity of the discharging signal are regulated in accordance with a switching scheme that converts circuit element mismatch error into offset measurement errors which can be eliminated by subtraction. The discharging current during the pre-run-down interval ensures that the slope of the integrator output voltage at the final polarity change is independent of test signal polarity thereby avoiding a comparator hysteresis error. A decade-run-down technique is employed during the run-down interval enabling the digital conversion to be implemented on a decade counter.
摘要翻译： 提出了一种多斜率A / D转换器，采用多边积分技术，可以使用单个比较器来检测积分器输出电压的极性变化。 A / D转换器在起动间隔期间对测试信号进行积分，并在起动间隔期间以及在起动间隔期间和起动间隔之后的减速时间间隔内积分放电信号 。 放电信号的大小和极性根据将电路元件失配误差转换成可通过减法消除的偏移测量误差的切换方案进行调节。 在预运行间隔期间的放电电流确保最终极性变化的积分器输出电压的斜率与测试信号极性无关，从而避免了比较器滞后误差。 在衰减间隔期间采用十年倒计时技术，可以在十年计数器上实现数字转换。
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公开(公告)号：US4030016A
公开(公告)日：1977-06-14
申请号：US670805
申请日：1976-03-26
申请人： Joe E. Marriott
发明人： Joe E. Marriott
IPC分类号： H04B3/04 , G01R19/22 , G05F1/46 , H02M3/00 , H02M7/12 , H02M7/21 , H03D1/10 , H03D1/18 , H03K9/02 , H04L27/06 , H02M7/00
CPC分类号： G01R19/22
摘要： An improved feedback/compensation scheme for a precision active rectifier circuit improves the slew rate and loop gain during diode switching and thereby reduces fractional scale linearity problems.
摘要翻译： 精密有源整流电路的改进的反馈/补偿方案提高了二极管切换期间的转换速率和环路增益，从而降低了分数级线性问题。
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5.发明授权
公开(公告)号：US4876520A
公开(公告)日：1989-10-24
申请号：US187101
申请日：1988-04-28
申请人： David P. Kjosness , Joe E. Marriott
发明人： David P. Kjosness , Joe E. Marriott
摘要： A switching network for coaxial transmission lines switches both the center conductors and the shields to allow floating measurements and eliminate the effects of ground loops. The shields are switched even though the coaxial relays use to switch the center conductors do not themselves also switch the shields. This is accomplished by using two coaxial relays having connected center conductors, each of which coaxial relay is itself shielded, and a third relay to selectively connect and disconnect the shields of the coaxial relays. All three relays open and close in unison. Although this arrangement provides excellent isolation when open within the circuit where it is used, there is unfortunatly a coupling mechanism between pairs of such circuits having such relay arrangements that are closed. This coupling mechanism produces crosstalk between such pair of circuits. The crosstalk current tends to flow in a resonant circuit. Both the resonant peak of the crosstalk current and its non resonant magnitude can be reduced by the inclusion of magnetic cores (such as lossy ferrites) around the coaxial transmission lines as they enter and leave the coaxial relays.
摘要翻译： 用于同轴传输线的开关网络切换中心导体和屏蔽层，以允许浮动测量并消除接地回路的影响。 即使同轴继电器用于切换中心导体本身也不会切换屏蔽，屏蔽层也被切换。 这通过使用具有连接的中心导体的两个同轴继电器来实现，每个同轴继电器本身被屏蔽，并且第三继电器选择性地连接和断开同轴继电器的屏蔽。 所有三个继电器一致地打开和关闭。 虽然这种布置在其使用的电路中打开时提供了极好的隔离，但是在这种具有闭合的这种继电器布置的电路对之间不幸地存在耦合机构。 这种耦合机制在这样的电路对之间产生串扰。 串扰电流趋于在谐振电路中流动。 当同轴传输线进入并离开同轴继电器时，通过在同轴传输线周围包含磁芯（例如有损铁氧体）可以减小串扰电流的谐振峰值及其非谐振幅度。
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6.发明授权
公开(公告)号：US4766401A
公开(公告)日：1988-08-23
申请号：US79568
申请日：1987-07-30
申请人： David P. Kjosness , Joe E. Marriott
发明人： David P. Kjosness , Joe E. Marriott
摘要： A switching network for coaxial transmission lines switches both the center conductors and the shields to allow floating measurements and eliminate the effects of ground loops. The shields are switched even though the coaxial relays used to switch the center conductors do not themselves also switch the shields. This is accomplished by using two coaxial relays having connected center conductors, each of which coaxial relay is itself shielded, and a third relay to selectively connect and disconnect the shields of the coaxial relays. All three relays open and close in unison. Although this arrangement provides excellent isolation when open within the circuit where it is used, there is unfortunately a coupling mechanism between pairs of such circuits having such relay arrangements that are closed. This coupling mechanism produces crosstalk between such pairs of circuits. The crosstalk current tends to flow in a resonant circuit. Both the resonant peak of the crosstalk current and its non resonant magnitude can be reduced by the inclusion of magnetic cores (such as lossy ferrites) around the coaxial transmission lines as they enter and leave the coaxial relays.
摘要翻译： 用于同轴传输线的开关网络切换中心导体和屏蔽层，以允许浮动测量并消除接地回路的影响。 即使用于切换中心导体的同轴继电器本身也不会切换屏蔽，屏蔽层也被切换。 这通过使用具有连接的中心导体的两个同轴继电器来实现，每个同轴继电器本身被屏蔽，并且第三继电器选择性地连接和断开同轴继电器的屏蔽。 所有三个继电器一致地打开和关闭。 虽然这种布置在其使用的电路中打开时提供了良好的隔离，但是不幸的是，具有封闭的这种继电器布置的这种电路对之间的耦合机构。 这种耦合机制在这种电路对之间产生串扰。 串扰电流趋于在谐振电路中流动。 当同轴传输线进入并离开同轴继电器时，通过在同轴传输线周围包含磁芯（例如有损铁氧体）可以减小串扰电流的谐振峰值及其非谐振幅度。
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7.发明授权公开(公告)号：US08791687B2
公开(公告)日：2014-07-29
申请号：US13480007
申请日：2012-05-24
申请人： Joe E. Marriott
发明人： Joe E. Marriott
IPC分类号： H01F27/42
CPC分类号： H01F27/42 , G01R15/125 , H01F2027/408
摘要： An apparatus and technique that reduces induced cross-talk current between transformer windings. The apparatus includes a transformer having a first secondary winding that provides a first voltage relative to earth ground, a second secondary winding that provides a second voltage relative to floating ground, and a shield disposed between the first and second secondary windings. A correction circuit connected to the first secondary winding is configured to generate a correction voltage. The correction voltage drives a shield to induce a correction current into the second secondary winding to reduce cross-talk current induced between the first and second secondary windings.
摘要翻译： 降低变压器绕组之间的串扰电流的装置和技术。 该装置包括具有提供相对于接地的第一电压的第一次级绕组和提供相对于浮地的第二电压的第二次级绕组和设置在第一和第二次级绕组之间的屏蔽的变压器。 连接到第一次级绕组的校正电路被配置为产生校正电压。 校正电压驱动屏蔽以引起到第二次级绕组中的校正电流，以减少在第一和第二次级绕组之间感应的串扰电流。
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公开(公告)号：US07079004B2
公开(公告)日：2006-07-18
申请号：US10684101
申请日：2003-10-10
申请人： Sylvia J. Budak , Joe E. Marriott
发明人： Sylvia J. Budak , Joe E. Marriott
IPC分类号： H21C12/16
摘要： A precision AC input voltage divider on a substrate is printed as a serpentine pattern for a thin line of resistive material. Bothersome original “bad” stray capacitances to a ground, particularly those to or from the middle of the serpentine, are effectively removed by coupling to their ungrounded ends additional “good” stray capacitances that are themselves driven by the input voltage. The additional good stray capacitances are chosen to supply substantially the exact current needed by the original bad strays, so that the original resistive divider never “sees” the strays at all, and requires in addition only minimal conventional compensation by external parts. The additional good strays are obtained by a metallic conductor that is electrically connected to the input terminal, and runs adjacent to the serpentine resistance for part or all of its length.
摘要翻译： 印刷基板上的精密交流输入分压器作为电阻材料细线的蛇形图案。 通过与其未接地的端子耦合，附加的“良好的”杂散电容本身由输入电压驱动，从而有效地去除了对地面特别是那些到达或来自蛇形管的中间的原始“差”杂散电容。 选择额外的良好的杂散电容以提供基本上由原始不良流浪所需的精确电流，使得原始电阻分压器根本不“看到”杂散，并且另外仅需要通过外部部件的最小的常规补偿。 通过电连接到输入端子的金属导体获得额外的良好的杂散，并且在其长度的一部分或全部上邻近蛇形电阻运行。
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公开(公告)号：US07268663B2
公开(公告)日：2007-09-11
申请号：US11257670
申请日：2005-10-25
申请人： Sylvia J. Budak , Joe E. Marriott
发明人： Sylvia J. Budak , Joe E. Marriott
摘要： A precision AC input voltage divider of input resistance RI and feedback resistance RF on a substrate is printed as a serpentine pattern for a thin line of resistive material. The input resistance is formed between a first and second terminal, and feedback resistance is formed between the second terminal and a third terminal. A first metallic conductor is formed on the substrate, connected to the first terminal, disposed to be adjacent to the input resistance, and having a distributed capacitive coupling to the input resistance that compensates for corresponding distributed stray capacitance from the input resistance to a circuit ground. A second metallic conductor is formed on the substrate, connected to the third terminal, disposed to be adjacent the feedback resistance, and having a distributed capacitive coupling to the feedback resistance that compensates for corresponding distributed stray capacitance from the feedback resistance to the circuit ground.
摘要翻译： 印刷基板上的输入电阻R I I和反馈电阻R FE的精密AC输入分压器作为电阻材料薄线的蛇形图案印刷。 输入电阻形成在第一和第二端子之间，并且在第二端子和第三端子之间形成反馈电阻。 第一金属导体形成在基板上，连接到第一端子，设置成与输入电阻相邻，并且具有到输入电阻的分布电容耦合，其补偿从输入电阻到电路接地的相应的分布式杂散电容 。 第二金属导体形成在基板上，连接到第三端子，设置成与反馈电阻相邻，并且具有到反馈电阻的分布式电容耦合，其补偿从反馈电阻到电路接地的相应的分布式寄生电容。
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10.发明授权
公开(公告)号：US4451898A
公开(公告)日：1984-05-29
申请号：US319559
申请日：1981-11-09
CPC分类号： G11C11/419 , G06F13/42
摘要： An asynchronous interface enables the transfer of information between a set of devices operating in a loop and having a wide range of operating speeds. Each device can enter a Controller active state in which it sources command frames to control the loop operation. Each device can also enter a Talker active state in which it sources Data frames on a Listener active state in which it received Data frames. The transfer of frames is coordinated by a set of handshakes which enable the frames to be transferred in an asynchronous manner.
摘要翻译： 异步接口使得能够在一组在循环中操作且具有广泛的操作速度的设备之间传送信息。 每个设备都可以进入控制器活动状态，在该状态下，它可以发出命令帧来控制循环操作。 每个设备也可以进入一个Talker活动状态，在该状态下，它会在接收到数据帧的侦听器活动状态下源数据帧。 帧的传送由一组握手协调，这使得帧能够以异步方式传送。
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