公开(公告)号：US6108215A

公开(公告)日：2000-08-22

申请号：US236131

申请日：1999-01-22

申请人： Barry K. Kates ,  John Cummings

发明人： Barry K. Kates ,  John Cummings

IPC分类号： H02M7/5387 ,  H05B41/282 ,  H05B41/392 ,  H02M3/335

CPC分类号： H02M7/53871 ,  H05B41/2824 ,  H05B41/3927 ,  Y02B20/185 ,  Y02B70/1441

摘要： An inverter circuit having dual converters for driving a fluorescent lamp comprising a pulse width modulator coupled to receive a feedback signal indicative of current in the fluorescent lamp. The pulse width modulator generates driving signals that are received by a synchronously switching voltage regulator having a high side driver and a low side driver. A self-resonant converter is coupled between the synchronously switching voltage regulator and the fluorescent lamp and generates a voltage signal for illuminating the fluorescent lamp. The self-resonant converter includes a transformer having a primary winding and at least one secondary winding, a capacitor coupled in parallel with the primary winding, and a full bridge circuit. The full bridge circuit may include four switching transistors, such as MOSFETs coupled in an H-configuration to the primary winding and the capacitor. A zero voltage detector controls switching of the synchronously switching voltage regulator based on voltage input to the self-resonant converter. A timer circuit is coupled to the self-resonant converter and the zero voltage detector, and outputs signals to control the frequency of oscillation in the self-resonant converter based on the signals from the self-resonant converter and the zero voltage detector.

摘要翻译： 一种具有用于驱动荧光灯的双转换器的逆变器电路，包括被连接以接收指示荧光灯中的电流的反馈信号的脉宽调制器。 脉宽调制器产生由具有高侧驱动器和低侧驱动器的同步开关稳压器接收的驱动信号。 自谐振转换器耦合在同步开关电压调节器和荧光灯之间，并产生用于照亮荧光​​灯的电压信号。 自谐振转换器包括具有初级绕组和至少一个次级绕组的变压器，与初级绕组并联耦合的电容器和全桥电路。 全桥电路可以包括四个开关晶体管，例如以H形配置到初级绕组和电容器的MOSFET。 零电压检测器基于对自谐振转换器的电压输入来控制同步开关稳压器的开关。 定时器电路耦合到自谐振转换器和零电压检测器，并且基于来自自谐振转换器和零电压检测器的信号输出信号以控制自谐振转换器中的振荡频率。

公开(公告)号：US6075352A

公开(公告)日：2000-06-13

申请号：US236137

申请日：1999-01-22

申请人： Barry K. Kates ,  John Cummings

发明人： Barry K. Kates ,  John Cummings

IPC分类号： H02M3/335 ,  G05F1/40 ,  G05F1/618

CPC分类号： H02M3/33592 ,  Y02B70/1475

摘要： A switching flyback regulator circuit for providing a plurality of regulated DC voltage supplies, wherein one of the regulator circuits includes a saturable reactor for regulating one of the output voltages. The flyback regulator circuit includes a primary inductive element coupled to a first switch to turn charging current flow through the primary inductive element ON and OFF, a first secondary inductive element having a first end coupled to supply a first power source and magnetically coupled with the primary inductive element, and a second secondary inductive element magnetically coupled with the primary inductive element. The second secondary inductive element has a first end coupled to produce the second power source and a second end coupled in series with the saturable reactor and a second switch to control current flow through the second secondary inductive element. A control circuit is coupled to control the ON and OFF duty cycle of the second switch such that when the first switch is operated to allow the primary inductive element to discharge, current flows through the first secondary inductive element before current flows in the second secondary inductive element. A reset current signal controls current flow through the saturable reactor.

摘要翻译： 一种用于提供多个调节的DC电压源的开关反激调节器电路，其中所述调节器电路之一包括用于调节所述输出电压之一的可饱和电抗器。 回扫调节器电路包括耦合到第一开关的初级感应元件，以使通过初级感应元件ON和OFF的充电电流流动;第一次级电感元件，其具有耦合以提供第一电源并与主电磁元件磁耦合的第一端 电感元件和与主电感元件磁耦合的第二次级电感元件。 第二次级电感元件具有耦合以产生第二电源的第一端和与可饱和电抗器串联耦合的第二端和用于控制通过第二次级电感元件的电流的第二开关。 控制电路被耦合以控制第二开关的接通和关断占空比，使得当第一开关被操作以允许初级电感元件放电时，电流在第二次级电感器中流动之前流经第一次级电感元件 元件。 复位电流信号控制通过可饱和电抗器的电流。

公开(公告)号：US6137267A

公开(公告)日：2000-10-24

申请号：US236136

申请日：1999-01-22

申请人： Barry K. Kates ,  John Cummings

发明人： Barry K. Kates ,  John Cummings

IPC分类号： H02J7/00 ,  H02M1/00 ,  H02M3/158

CPC分类号： H02J7/0052 ,  H02M3/1588 ,  H02J2007/0059 ,  H02M1/32 ,  Y02B40/90 ,  Y02B70/1466

摘要： A limiting circuit for controlling overshoot in a charge current in a battery recharging system includes a current amplifier receiving input indicative of charge current in a rechargeable battery circuit and generating a current error signal, a voltage amplifier receiving input indicative of charge voltage in the rechargeable battery circuit and generating a voltage error signal, and a power amplifier receiving a first signal indicative of power in a switching voltage regulator and a second power signal indicative of power in the rechargeable battery circuit, and generating a power error signal. The limiting circuit compares the voltage error signal, the current error signal, and the power error signal to determine the error signal having the greatest value, and generates an input signal to a pulse width modulation comparator. The limiting circuit also includes an internal current source, a first transistor coupled to the current amplifier, a second transistor coupled to the voltage amplifier; and a third transistor coupled to the power amplifier. The first transistor, the second transistor, and the third transistor are coupled to the internal current source to determine the error signal having the greatest value. To prevent reverse current flow in the switching voltage regulator, a low current comparator receives a signal indicative of the current flowing in the switching voltage regulator, and generates an output signal. A transistor receives the output signal from the low current comparator, and generates a signal to maintain the current flowing in the switching regulator circuit above a threshold value.

摘要翻译： 用于控制电池充电系统中的充电电流中的过冲的限制电路包括电流放大器，其接收表示充电电池电路中的充电电流的输入并产生电流误差信号，电压放大器接收指示充电电池中的充电电压的输入 并产生电压误差信号，以及功率放大器，接收指示开关电压调节器中的功率的第一信号和指示可再充电电池电路中的功率的第二功率信号，以及产生功率误差信号。 限幅电路比较电压误差信号，电流误差信号和功率误差信号，以确定具有最大值的误差信号，并产生到脉宽调制比较器的输入信号。 限制电路还包括内部电流源，耦合到电流放大器的第一晶体管，耦合到电压放大器的第二晶体管; 以及耦合到功率放大器的第三晶体管。 第一晶体管，第二晶体管和第三晶体管耦合到内部电流源，以确定具有最大值的误差信号。 为了防止开关电压调节器中的反向电流流动，低电流比较器接收指示在开关稳压器中流动的电流的信号，并产生输出信号。 晶体管接收来自低电流比较器的输出信号，并产生一个信号，以保持在开关调节器电路中流动的电流高于阈值。

公开(公告)号：US06172883B2

公开(公告)日：2001-01-09

申请号：US09236132

申请日：1999-01-22

申请人： Barry K. Kates ,  John Cummings

发明人： Barry K. Kates ,  John Cummings

IPC分类号： H02M3335

CPC分类号： H02M3/33576 ,  H02M3/33561

摘要： A switching flyback regulator circuit for providing a plurality of regulated DC voltage power supplies. The flyback regulator circuit includes a primary inductive element coupled in series with a first switch to turn charging current flow through the primary inductive element ON and OFF. A first secondary inductive element having a first end coupled to supply a first power source. A second secondary inductive element has a first end coupled to produce the second power source, and a second end coupled to a second switch to turn current flow through the second secondary inductive element ON and OFF. The first secondary inductive element and the second secondary inductive element are magnetically coupled to the primary inductive element. A control circuit generates a ramped voltage signal having a negative slope to control the ON and OFF duty cycle of the second switch such that when the first switch is operated to allow the primary inductive element to discharge, current flows through the first secondary inductive element before current flows in the other secondary inductive element. The current through the second switch is zero when the second switch is turned OFF and ON, thereby eliminating switching losses and improving efficiency of the flyback regulator circuit.

摘要翻译： 一种用于提供多个稳压的DC电压电源的开关反激调节器电路。 回扫调节器电路包括与第一开关串联耦合的初级电感元件，以使通过初级电感元件ON和OFF的充电电流流动。 第一次级感应元件，其具有耦合以提供第一电源的第一端。 第二次感应元件具有耦合以产生第二电源的第一端，以及耦合到第二开关的第二端，以使通过第二次级电感元件的电流流过和断开。 第一次感应元件和第二次感应元件磁耦合到主电感元件。 控制电路产生具有负斜率的斜坡电压信号以控制第二开关的导通和截止占空比，使得当第一开关被操作以允许初级电感元件放电时，电流在第一次感应元件之前流过第一次感应元件 电流在另一个次级电感元件中流动。 当第二开关断开和接通时，通过第二开关的电流为零，从而消除开关损耗并提高回扫调节器电路的效率。

公开(公告)号：US06130509A

公开(公告)日：2000-10-10

申请号：US236138

申请日：1999-01-22

申请人： Barry K. Kates ,  John Cummings

发明人： Barry K. Kates ,  John Cummings

IPC分类号： H05B41/282 ,  H05B37/02

CPC分类号： H05B41/2822 ,  Y10S315/07

摘要： An apparatus and method are provided for driving a cold cathode fluorescent lamp in a floating configuration with an inverter circuit having a transformer with a primary winding and two secondary windings. At least one sense resistor is coupled in series between terminals of the secondary windings. The other terminal of each secondary winding is coupled to a respective end of the fluorescent lamp. A rectifier is coupled to the secondary portion of the transformer to receive a signal indicative of the current in at least one end of the fluorescent lamp and generates a feedback signal. A control and drive circuit generates drive signals based on the feedback signal to control the current in the fluorescent lamp and outputs the drive signals to the primary transformer winding.

摘要翻译： 提供一种装置和方法，用于以具有初级绕组和二次级绕组的变压器的逆变器电路驱动具有浮动形式的冷阴极荧光灯。 至少一个检测电阻串联在次级绕组的端子之间。 每个次级绕组的另一个端子耦合到荧光灯的相应端。 整流器耦合到变压器的次级部分以接收指示荧光灯的至少一端中的电流的信号并产生反馈信号。 控制和驱动电路根据反馈信号生成驱动信号，以控制荧光灯中的电流，并将驱动信号输出到初级变压器绕组。

公开(公告)号：USD818380S1

公开(公告)日：2018-05-22

申请号：US29560373

申请日：2016-04-06

申请人： John Cummings

设计人： John Cummings

公开(公告)号：US08269491B2

公开(公告)日：2012-09-18

申请号：US12038119

申请日：2008-02-27

申请人： John Cummings ,  William P. Taylor ,  David J. Haas

发明人： John Cummings ,  William P. Taylor ,  David J. Haas

IPC分类号： G01R33/09 ,  G01N27/72

CPC分类号： G01R33/09 ,  G01R15/202 ,  G01R15/205 ,  G01R15/207 ,  G01R33/0023 ,  G01R33/0029 ,  G01R33/0035

摘要： Presented is a sensor that includes a magnetoresistive (MR) sensing device to sense a magnetic field and to produce an AC signal voltage proportional to the sensed magnetic field. The sensor also includes circuitry, coupled to the MR sensing device, to remove DC offset from the AC signal voltage. The DC offset may be related to the hysteresis characteristics of the MR sensing device. To remove DC offset, the circuitry may obtain an averaged DC offset and subtract the averaged DC offset from the AC signal voltage to produce a sensor output signal.

摘要翻译： 提出了一种传感器，其包括用于感测磁场并产生与所感测的磁场成比例的AC信号电压的磁阻（MR）感测装置。 传感器还包括耦合到MR感测装置的电路，以从AC信号电压去除DC偏移。 DC偏移可能与MR感测装置的滞后特性有关。 为了消除DC偏移，电路可以获得平均DC偏移，并从AC信号电压中减去平均的DC偏移量，以产生传感器输出信号。

公开(公告)号：US07134735B2

公开(公告)日：2006-11-14

申请号：US10613288

申请日：2003-07-03

申请人： John Cummings

发明人： John Cummings

IPC分类号： A47F3/00

CPC分类号： A47F3/005 ,  A47F3/002

摘要： A display case comprises a first section having a top wall, a bottom wall and a back wall connected between the top and bottom walls, and, a second section having opposed side walls with a front wall connected between them. The second section slides into engagement with the first section to form a closed interior. The bottom wall of the first section is integrally formed with a bracket which includes first and second arms connected in an inverse, L-shape, with one of the arms oriented parallel to and spaced from the bottom wall to form a space within which a shelf is received. A thumb screw or other mounting device extends through the bracket arm to engage the shelf and secure the display case thereto.

摘要翻译： 显示器壳体包括具有顶壁，底壁和连接在顶壁和底壁之间的后壁的第一部分，以及具有相对侧壁的第二部分，前壁连接在它们之间。 第二部分滑动与第一部分接合以形成封闭的内部。 第一部分的底壁与支架一体形成，支架包括以相反的L形连接的第一和第二臂，其中一个臂平行于底壁并与底壁间隔开，形成一个搁板 被收到。 拇指螺钉或其他安装装置延伸穿过支架臂以接合货架并将展示柜固定到其上。

公开(公告)号：US20050073866A1

公开(公告)日：2005-04-07

申请号：US10681089

申请日：2003-10-07

申请人： John Cummings

发明人： John Cummings

IPC分类号： H01M14/00 ,  H02M20060101

CPC分类号： H02M3/1588 ,  H01M10/0525 ,  Y02B70/1466

摘要： Boost converters, power supply apparatuses, electrical energy boost methods and electrical energy supply methods are described. According to one aspect, a boost converter includes an input configured to receive direct current electrical energy at a first voltage, an output configured to output direct current electrical energy at a second voltage higher than the first voltage, a plurality of switching devices coupled in series intermediate a positive terminal of the output and a ground, wherein one of the switching devices comprises a high side switching device coupled with the positive terminal and the other of the switching devices comprises a low side switching device coupled with the ground, drive circuitry configured to output a common control signal to control switching of the plurality of switching devices, a capacitor configured to capacitively couple the common control signal from the drive circuitry to the high side switching device, and wherein the control signal is configured to control the switching of the switching devices to boost the voltage of the received electrical energy of the first voltage to the second voltage.

摘要翻译： 描述了升压转换器，电源装置，电能提升方法和电能供应方法。 根据一个方面，升压转换器包括被配置为在第一电压处接收直流电能的输入，被配置为在高于第一电压的第二电压处输出直流电能的输出;串联耦合的多个开关装置 在输出端的正端和地之间，其中开关装置之一包括与正极耦合的高侧开关装置，另一个开关装置包括与地耦合的低侧开关装置，驱动电路被配置为 输出公共控制信号以控制所述多个开关装置的开关;电容器，被配置为将来自所述驱动电路的所述公共控制信号电容耦合到所述高侧开关装置，并且其中所述控制信号被配置为控制所述开关的切换 用于提高第一电压的接收电能的电压的装置 到第二电压。

公开(公告)号：US5107742A

公开(公告)日：1992-04-28

申请号：US578559

申请日：1990-09-04

申请人： John Cummings ,  Fred Mills ,  Richard Gerlach ,  Glenn Strawn

发明人： John Cummings ,  Fred Mills ,  Richard Gerlach ,  Glenn Strawn

IPC分类号： G10D13/02

CPC分类号： G10D13/025

摘要： A shiftable snare strainer for a snare drum including a body secured to the drum shell and a slide longitudinally shiftable relative to the body. The slide is connected at its lower end to the snares. A lock is pivotally carried by the body for engaging the slide to hold the slide in a down position wherein the snares are spaced from the head. The lock is released by striking a release pad to allow the slide to shift upwardly to engage the snares with the drumhead.

摘要翻译： 用于小鼓的可移动的圈套过滤器，包括固定到鼓壳的主体和相对于身体纵向移位的滑块。 滑块在其下端连接到网络。 锁体被身体枢转地承载，用于与滑动件接合以将滑动件保持在向下位置，其中圈套与头部间隔开。 通过敲击释放垫来释放锁，以允许滑块向上移动以将耳环与鼓头接合。