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1. 发明授权

US5563758A Circuit to permit three phase input power supply to operate when one phase drops out and provide lightening protection 失效
标题翻译：电路允许三相输入电源在一相脱落并提供防雷保护时运行
公开(公告)号：US5563758A
公开(公告)日：1996-10-08
申请号：US412818
申请日：1995-03-29
申请人： Edward D. Dembrosky , Mark K. DeMoor , Randhir S. Malik
发明人： Edward D. Dembrosky , Mark K. DeMoor , Randhir S. Malik
IPC分类号： H02J1/00 , H02H3/24 , H02H3/253 , H02H7/125 , H02H9/04 , H02M7/06 , H02H7/10
CPC分类号： H02H3/24 , H02H3/253 , H02H9/04 , H02H7/1252
摘要： A power supply circuit receives and rectifies a three phase power source. A first capacitor is coupled to filter and store the rectified three phases and supply the stored energy to a DC/DC converter. The first capacitor is large enough, when all three phases are present, to filter the rectified input power and supply rated voltage to the DC/DC converter between peaks in the phases, but not too large as to adversely affect the power factor. However, when one phase drops out, additional capacitance is required to maintain rated voltage to the DC/DC converter during the periodic absence of the one phase. Thus, a switch and a second capacitor are connected in series with each other and in parallel with the first capacitor. In response to absence of one of the phases, the switch is activated to couple the second capacitor to filter and store the rectified two phases and supply the stored energy to the DC/DC converter. The additional capacitance of the second capacitor is sufficient to maintain rated voltage to the DC/DC converter during the absence of the one phase.
摘要翻译：电源电路接收并整流三相电源。耦合第一电容器以过滤并存储经整流的三相，并将存储的能量提供给DC / DC转换器。当存在所有三相时，第一个电容器足够大，可以对整流的输入电源进行滤波，并在相间的峰值之间为DC / DC转换器提供额定电压，但不要太大，从而不利地影响功率因数。然而，当一相脱落时，需要额外的电容来在一阶段的周期性不存在期间维持DC / DC转换器的额定电压。因此，开关和第二电容器彼此串联并且与第一电容器并联连接。响应于没有其中一个相位，开关被激活以耦合第二电容器以过滤并存储经整流的两相，并将存储的能量提供给DC / DC转换器。第二电容器的附加电容足以在不存在一相期间保持对DC / DC转换器的额定电压。

2. 发明授权

US5514972A Voltage comparison circuit 失效
标题翻译：电压比较电路
公开(公告)号：US5514972A
公开(公告)日：1996-05-07
申请号：US326627
申请日：1994-10-20
申请人： Mark K. DeMoor , Paul W. Graf , Jonathan J. Hurd
发明人： Mark K. DeMoor , Paul W. Graf , Jonathan J. Hurd
IPC分类号： G01R19/165 , H03K5/24 , G01R27/26 , H03K5/22
CPC分类号： H03K5/24 , G01R19/16576
摘要： A circuit compares a difference between first and second voltages to a predetermined voltage. The circuit comprises an amplifier having first and second inputs. First and second capacitors are each coupled at one end to the first input of the amplifier. The first capacitor is charged with the first voltage and subsequently discharged. The second capacitor is charged with a first reference voltage and subsequently discharged. Third and fourth capacitors are each coupled at one end to the second input of the amplifier. The third capacitor is charged with the second voltage and subsequently discharged. The fourth capacitor is charged with a second reference voltage and subsequently discharged.
摘要翻译：电路将第一和第二电压之间的差异与预定电压进行比较。该电路包括具有第一和第二输入的放大器。第一和第二电容器各自在一端耦合到放大器的第一输入端。第一个电容器用第一个电压充电并随后放电。第二电容器充电第一参考电压并随后放电。第三和第四电容器一端分别耦合到放大器的第二输入端。第三电容器用第二电压充电并随后放电。第四电容器用第二参考电压充电并随后放电。

3. 发明授权

US5237262A Temperature compensated circuit for controlling load current 失效
标题翻译：用于控制负载电流的温度补偿电路
公开(公告)号：US5237262A
公开(公告)日：1993-08-17
申请号：US782218
申请日：1991-10-24
申请人： Donald J. Ashley , Mark K. DeMoor , Paul W. Graf
发明人： Donald J. Ashley , Mark K. DeMoor , Paul W. Graf
IPC分类号： G05F1/567 , G05F1/573 , H01H47/32 , H01L27/02 , H02M3/156
CPC分类号： H02M3/156 , G05F1/567 , G05F1/573 , H01H47/325 , H01L27/0248 , H02M2003/1555 , Y10S323/907
摘要： A temperature compensated control circuit includes a load transistor which passes the load current and has an on-resistance which varies with temperature. To provide temperature compensation, first and second pilot transistors are integrated with the load transistor such that as the load transistor heats-up due to the load current passing through the on-resistance of the load transistor, the first and second pilot transistors heat-up due to heat conduction from the load transistor. Each of the pilot transistors has an on-resistance which varies proportionally or similarly to the on-resistance of the load transistor. A first current source supplies a first level of current to the on-resistance of the first pilot transistor to develop a first reference voltage, and a second current source supplies a second level of current to the on-resistance of the second pilot transistor to develop a second reference voltage. The range between the first and second reference voltages corresponds to an acceptable range of load current. A voltage corresponding to the load current is sensed across the load transistor, and the control circuit controls the load current to maintain the sensed voltage within the range.
摘要翻译：温度补偿控制电路包括通过负载电流并具有随温度变化的导通电阻的负载晶体管。为了提供温度补偿，第一和第二导频晶体管与负载晶体管集成，使得当负载晶体管由于负载电流通过负载晶体管的导通电阻而加热时，第一和第二导频晶体管加热由于负载晶体管的热传导。每个导频晶体管具有与负载晶体管的导通电阻成比例地或类似地变化的导通电阻。第一电流源向第一导频晶体管的导通电阻提供第一电平以产生第一参考电压，并且第二电流源将第二电平电流提供给第二导频晶体管的导通电阻以产生第二参考电压。第一和第二参考电压之间的范围对应于负载电流的可接受范围。在负载晶体管两端检测对应于负载电流的电压，并且控制电路控制负载电流以将感测的电压保持在该范围内。

4. 发明授权

US4902957A DC/DC converter 失效
标题翻译： DC / DC转换器
公开(公告)号：US4902957A
公开(公告)日：1990-02-20
申请号：US344182
申请日：1989-04-27
申请人： John C. Cassani , Mark K. DeMoor , Paul W. Graf , Jonathan J. Hurd , Christopher D. Jones , Stephen F. Newton , David R. Thomas
发明人： John C. Cassani , Mark K. DeMoor , Paul W. Graf , Jonathan J. Hurd , Christopher D. Jones , Stephen F. Newton , David R. Thomas
IPC分类号： H02M3/155 , H02M3/156
CPC分类号： H02M3/156
摘要： A latch (29) is set by a clock (33) to turn on power switch (FET 5). The latch (29) is reset by high voltage comparator (21), by a 50 percent clock delay (35) and by a low-voltage-to-charging-current comparator (19). The voltage at turn-on is compared with a up-ramping reference (15) until it equals an operating reference (17). A temporary delay (pulse circuit 39 and gate 37) is provided before the low voltage comparison can be effective. The delay prevents response to parasitic effects across the power switch (5). Excess drive is prevented resulting from low output currents and malfunctions, and at turn-on.

5. 发明授权

US07277654B2 Electrophotographic power supply configuration for supplying power to a fuser 有权
标题翻译：用于为定影器供电的电子照相电源配置
公开(公告)号：US07277654B2
公开(公告)日：2007-10-02
申请号：US11166807
申请日：2005-06-24
申请人： Mark K. DeMoor , John W Kietzman , Gregory H. McClure , William A. Menk, Jr. , Calvin D. Murphy , Lawrence G. Teply
发明人： Mark K. DeMoor , John W Kietzman , Gregory H. McClure , William A. Menk, Jr. , Calvin D. Murphy , Lawrence G. Teply
IPC分类号： G03G15/00 , G03G15/20
CPC分类号： G03G15/5004 , G03G15/2039 , G03G15/80
摘要： A power supply control system for a fuser assembly in an electrophotographic apparatus includes a power supply and a fuser assembly. The power supply includes a first electrical path designated for a fuser assembly that operates at a first voltage and a second electrical path designated for a fuser assembly that operates at a second voltage. The fuser assembly is configured to operate at a select one of the first voltage or the second voltage and is connected to the first electrical path if the fuser assembly operates at the first voltage, and the fuser assembly is connected to the second electrical path if the fuser assembly operates at the second voltage. The first and second electrical paths allow different device features including power limiting devices such as fuses, switches, relays, etc., to be placed in each path.
摘要翻译：一种用于电子照相设备中的定影器组件的电源控制系统，包括电源和定影组件。电源包括指定用于定影组件的第一电路径，该第一电路在第一电压下工作，而第二电路被指定用于以第二电压工作的定影器组件。定影器组件被配置为以第一电压或第二电压中的选择的一个操作，并且如果定影器组件在第一电压下操作，并且如果定影组件连接到第二电路径，则将其连接到第一电路径定影器组件以第二电压工作。第一和第二电路允许不同的设备特征，包括诸如保险丝，开关，继电器等的功率限制装置放置在每个路径中。

6. 发明授权

US5245261A Temperature compensated overcurrent and undercurrent detector 失效
标题翻译：温度补偿过流和欠电流检测器
公开(公告)号：US5245261A
公开(公告)日：1993-09-14
申请号：US782211
申请日：1991-10-24
申请人： Donald J. Ashley , Mark K. DeMoor
发明人： Donald J. Ashley , Mark K. DeMoor
IPC分类号： H01L27/02 , H01L29/10
CPC分类号： H01L27/0248 , H01L29/1075 , H01L2924/0002
摘要： A temperature compensated overcurrent and/or undercurrent detector monitors current through a solenoid or other load and signals when the load current exceeds an upper limit or falls below a lower limit. Such a signal may indicate a failure of another circuit which supplies the load current via a load transistor. This other circuit which supplies the load current is temperature compensated, and likewise the detector is temperature compensated so it can be set to signal an overcurrent or undercurrent condition when the load current varies a small amount from a predetermined range. The load transistor has an on-resistance which passes the load current and varies with temperature. The temperature compensation for the detector is provided in part by two pilot transistors which are integrated with the load transistor such that as the load transistor heats-up due to the load current passing through the on-resistance, the pilot transistors heat-up due to heat conduction from the load transistor. Each pilot transistor also has an on-resistance which varies proportionally or similarly to the on-resistance of the load transistor. A current source is coupled to the on-resistance of each pilot transistor to generate reference voltages above and below the acceptable range of voltages sensed by the sensor representing an acceptable range of load currents.
摘要翻译：温度补偿过电流和/或欠电流检测器通过电磁线圈或其他负载监测电流，并在负载电流超过上限或下降到低于下限时发出信号。这样的信号可以指示通过负载晶体管提供负载电流的另一电路的故障。提供负载电流的另一个电路是温度补偿的，同样，检测器进行温度补偿，因此当负载电流从预定范围变化很小时，可以将其设置为发出过电流或欠电流状态。负载晶体管具有通过负载电流并随温度变化的导通电阻。检测器的温度补偿部分由与负载晶体管集成的两个导频晶体管部分提供，使得由于负载晶体管由于负载电流通过导通电阻而加热，导频晶体管由于来自负载晶体管的热传导。每个引导晶体管还具有与负载晶体管的导通电阻成比例地或类似地变化的导通电阻。电流源耦合到每个导频晶体管的导通电阻，以产生高于和低于表示可接受的负载电流范围的由传感器感测的电压的可接受范围的参考电压。

7. 发明授权

US06870140B2 Universal fuser heating apparatus with effective resistance switched responsive to input AC line voltage 有权
标题翻译：通用定影加热装置，响应输入交流线路电压有效阻力切换
公开(公告)号：US06870140B2
公开(公告)日：2005-03-22
申请号：US10442866
申请日：2003-05-21
申请人： William P. Cook , Mark K. DeMoor , Steven J. Harris , John W. Kietzman , Gregory H. McClure , Jerry W. Smith
发明人： William P. Cook , Mark K. DeMoor , Steven J. Harris , John W. Kietzman , Gregory H. McClure , Jerry W. Smith
IPC分类号： G03G15/20 , H05B1/02 , G03G15/00
CPC分类号： H05B1/0205 , G03G15/2039 , G03G15/80 , G03G2215/2035
摘要： A plurality of universal fuser heating apparatus embodiments are provided, each of which is capable of receiving any one of a number of input AC line voltages falling within at least two AC line voltage ranges. In each embodiment, the fuser heating apparatus has a first, low effective resistance corresponding to AC line voltages falling within low AC line voltage ranges and a second, high effective resistance corresponding to AC line voltages falling within high AC line voltage ranges.
摘要翻译：提供了多个通用定影加热装置实施例，每个通用定影加热装置的实施例能够接收落入至少两个AC线路电压范围内的多个输入AC线路电压中的任何一个。在每个实施例中，定影加热装置具有对应于落在低AC线电压范围内的AC线电压的第一低有效电阻和对应于落在高AC线电压范围内的AC线电压的第二高有效电阻。

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