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1. 发明授权

US5162981A Low voltage D.C. to D.C. converter 失效
标题翻译：低电压直流到直流转换器
公开(公告)号：US5162981A
公开(公告)日：1992-11-10
申请号：US707530
申请日：1991-05-30
申请人： James F. Lazar , Stephen J. Hulsey
发明人： James F. Lazar , Stephen J. Hulsey
IPC分类号： H02M3/28 , H02M3/337 , H02M3/338
CPC分类号： H02M3/3388 , H02M3/3384
摘要： A circuit for converting on d.c. voltage to another d.c. voltage including a transformer having a center tap and first and second end leads. A d.c. source voltage is connected to the center tap of the transformer. The end leads are connected to ground through first and second MOSFETs and to the gate of the MOSFET through which the other end lead is connected to ground such that the circuit is nominally self-oscillating due to transformer saturation. Current spikes may be minimized with a control circuit, consisting of an oscillator, a flip-flop, and first and second transistors, connected to the gates of the first and second MOSFETs. The control circuit turns the MOSFETS off prior to their natural oscillation turn off caused by transformer saturation. The circuit is particularly suited to operation with a low voltage d.c. source and low voltage MOSFETS.

2. 发明申请

US20120299649A1 MULTI-TIER POWER SUPPLY FOR AUDIO AMPLIFIERS 有权
标题翻译：用于音频放大器的多级电源
公开(公告)号：US20120299649A1
公开(公告)日：2012-11-29
申请号：US13565241
申请日：2012-08-02
申请人： James F. Lazar , Mark Polomski
发明人： James F. Lazar , Mark Polomski
IPC分类号： H03G1/00
CPC分类号： H03F3/183 , H03F1/0222 , H03F1/305 , H03F3/21 , H03F2200/03 , H03F2200/507 , H03G3/10 , H03G3/301 , H04R27/00 , H04R29/001 , H04R2420/03 , Y10T307/653 , Y10T307/696
摘要： Techniques for providing multiple power supplies in electronic devices are disclosed. According to one aspect of the present invention, an appropriate power supply is provided only to accommodate a volume setting. In other words, there are at least two power supplies, one with a low voltage and the other with a high voltage. The high voltage power supply is only applied when there is a need to accommodate a volume setting. Thus the power consumption of the amplifiers is well controlled. As a result, the designs of the device and heat dissipation therein can be simplified and lowered in cost.
摘要翻译：公开了在电子设备中提供多个电源的技术。根据本发明的一个方面，提供适当的电源仅用于容纳音量设置。换句话说，至少有两个电源，一个是低电压，另一个是高电压。只有当需要容纳音量设定时才应用高压电源。因此放大器的功耗受到很好的控制。结果，可以简化设备的设计和散热的成本。

3. 发明授权

US08258872B1 Multi-tier power supply for audio amplifiers 有权
标题翻译：音频放大器的多层电源
公开(公告)号：US08258872B1
公开(公告)日：2012-09-04
申请号：US11761342
申请日：2007-06-11
申请人： James F. Lazar , Mark Polomski
发明人： James F. Lazar , Mark Polomski
IPC分类号： H03G3/10
CPC分类号： H03F3/183 , H03F1/0222 , H03F1/305 , H03F3/21 , H03F2200/03 , H03F2200/507 , H03G3/10 , H03G3/301 , H04R27/00 , H04R29/001 , H04R2420/03 , Y10T307/653 , Y10T307/696
摘要： Techniques for providing multiple power supplies in electronic devices are disclosed. According to one aspect of the present invention, an appropriate power supply is provided only to accommodate a volume setting. In other words, there are at least two power supplies, one with a low voltage and the other with a high voltage. The high voltage power supply is only applied when there is a need to accommodate a volume setting. Thus the power consumption of the amplifiers is well controlled. As a result, the designs of the device and heat dissipation therein can be simplified and lowered in cost.
摘要翻译：公开了在电子设备中提供多个电源的技术。根据本发明的一个方面，提供适当的电源仅用于容纳音量设置。换句话说，至少有两个电源，一个是低电压，另一个是高电压。只有当需要容纳音量设定时才应用高压电源。因此放大器的功耗受到很好的控制。结果，可以简化设备的设计和散热的成本。

4. 发明授权

US07106605B2 DC converter circuit with overshoot protection 失效
标题翻译： DC转换电路具有过冲保护功能
公开(公告)号：US07106605B2
公开(公告)日：2006-09-12
申请号：US10881213
申请日：2004-06-30
申请人： Keming Chen , Lateef A. Kajouke , James F. Lazar
发明人： Keming Chen , Lateef A. Kajouke , James F. Lazar
IPC分类号： H02H7/125
CPC分类号： H02M3/28 , H02M3/33569
摘要： A DC-DC converter comprises an input circuit that stores inductive energy that includes a first switch that releases the stored inductive energy. A transformer includes a primary winding that communicates with the input circuit and a secondary winding. An output circuit communicates with the secondary winding and that includes first and second output conductors and a first diode that communicates with one end of the secondary winding and the first output conductor. A second diode communicates with one end of the secondary winding and the second output conductor. A third diode communicates with an opposite end of the secondary winding and the first output conductor. A fourth diode communicates with an opposite end of the secondary winding and the second output conductor. A first capacitor is connected in parallel to the third diode. A second capacitor is connected in parallel to the fourth diode.
摘要翻译： DC-DC转换器包括存储电感能的输入电路，其包括释放所存储的感应能量的第一开关。变压器包括与输入电路和次级绕组连通的初级绕组。输出电路与次级绕组通信，并且包括第一和第二输出导体以及与次级绕组和第一输出导体的一端连通的第一二极管。第二二极管与次级绕组和第二输出导体的一端连通。第三二极管与次级绕组和第一输出导体的相对端连通。第四二极管与次级绕组和第二输出导体的相对端连通。第一电容器并联连接到第三二极管。第二电容器并联连接到第四二极管。

5. 发明授权

US08867761B2 Multi-tier power supply for audio amplifiers 有权
标题翻译：音频放大器的多层电源
公开(公告)号：US08867761B2
公开(公告)日：2014-10-21
申请号：US13565241
申请日：2012-08-02
申请人： James F. Lazar , Mark Polomski
发明人： James F. Lazar , Mark Polomski
IPC分类号： H03F99/00 , H03G3/10
CPC分类号： H03F3/183 , H03F1/0222 , H03F1/305 , H03F3/21 , H03F2200/03 , H03F2200/507 , H03G3/10 , H03G3/301 , H04R27/00 , H04R29/001 , H04R2420/03 , Y10T307/653 , Y10T307/696
摘要： Techniques for providing multiple power supplies in electronic devices are disclosed. According to one aspect of the present invention, an appropriate power supply is provided only to accommodate a volume setting. In other words, there are at least two power supplies, one with a low voltage and the other with a high voltage. The high voltage power supply is only applied when there is a need to accommodate a volume setting. Thus the power consumption of the amplifiers is well controlled. As a result, the designs of the device and heat dissipation therein can be simplified and lowered in cost.
摘要翻译：公开了在电子设备中提供多个电源的技术。根据本发明的一个方面，提供适当的电源仅用于容纳音量设置。换句话说，至少有两个电源，一个是低电压，另一个是高电压。只有当需要容纳音量设定时才应用高压电源。因此放大器的功耗受到很好的控制。结果，可以简化设备的设计和散热的成本。

6. 发明授权

US06608396B2 Electrical motor power management system 失效
标题翻译：电动机电源管理系统
公开(公告)号：US06608396B2
公开(公告)日：2003-08-19
申请号：US10008921
申请日：2001-12-06
申请人： Scott D. Downer , James F. Lazar , James M. Nagashima
发明人： Scott D. Downer , James F. Lazar , James M. Nagashima
IPC分类号： B60L1100
CPC分类号： B60L15/2045 , B60L11/123 , B60L11/14 , B60L11/1868 , B60L2210/10 , B60L2210/12 , B60L2220/12 , B60L2220/14 , B60L2220/18 , H02J1/102 , H02M3/1584 , Y02T10/6217 , Y02T10/645 , Y02T10/7005 , Y02T10/7066 , Y02T10/7077 , Y02T10/7216 , Y02T10/7233 , Y02T10/7283 , Y10T307/511
摘要： A power control system for an electric traction motor in a vehicle comprising at least one inverter for providing conditioned electrical power to the electric traction motor, a plurality of power stages for providing DC power to the at least one inverter, each stage including a battery and boost/buck DC—DC converter, the power stages wired in parallel, and where the power stages are controlled to maintain an output voltage to the at least one inverter.
摘要翻译：一种用于车辆中的牵引电动机的电力控制系统，包括至少一个用于向电力牵引电动机提供经调节的电力的逆变器，用于向所述至少一个逆变器提供直流电力的多个功率级，每个级包括电池和升压/降压DC-DC转换器，功率级并联并且功率级被控制以保持至少一个逆变器的输出电压。

7. 发明授权

US07116012B2 Stable power conversion circuits 失效
标题翻译：稳定的电源转换电路
公开(公告)号：US07116012B2
公开(公告)日：2006-10-03
申请号：US10630496
申请日：2003-07-30
申请人： Lateef A. Kajouke , Keming A. Chen , James F. Lazar
发明人： Lateef A. Kajouke , Keming A. Chen , James F. Lazar
IPC分类号： H02J7/00
CPC分类号： H02M3/33592 , H02M3/33569 , Y02B70/1475 , Y10T307/615
摘要： A power conversion circuit includes a current section, a transformer, and a voltage section. The current section includes inductors configured to produce a boosted output voltage from a voltage sourse when then current section is operating in a forward direction. The transformer includes a primary winding electrically coupled to the secondary winding and configured to drive a load. The voltage section includes a pluralaty of balancing switchtes configured to actively driven to provide a DC voltage to the load. The balancing switches balance energy between the current section and the voltage section when the power conversion circuit is the load and operating in the forward direction.
摘要翻译：电力转换电路包括电流部分，变压器和电压部分。电流部分包括电感器，其被配置为当电流部分沿正向操作时从电压源产生升压的输出电压。变压器包括电耦合到次级绕组并被配置为驱动负载的初级绕组。电压部分包括多个平衡开关，其被配置为主动驱动以向负载提供DC电压。当功率转换电路是负载并在正向工作时，平衡开关平衡电流部分和电压部分之间的能量。

8. 发明授权

US06856521B1 Pulse width modulation soft-switching control 失效
标题翻译：脉宽调制软切换控制
公开(公告)号：US06856521B1
公开(公告)日：2005-02-15
申请号：US10643732
申请日：2003-08-19
申请人： Keming A. Chen , James F. Lazar , Lateef A. Kajouke
发明人： Keming A. Chen , James F. Lazar , Lateef A. Kajouke
IPC分类号： H02M3/28 , H02M3/335 , H02M7/5387 , H02M3/24 , H02M7/44
CPC分类号： H02M7/5387 , H02M3/33592 , Y02B70/1475
摘要： A DC/DC converter includes a first leg and a second leg. A controller employs hard switching in the first leg to reduce the conduction loss. The controller employs zero voltage in the second leg to reduce the switching loss.
摘要翻译： DC / DC转换器包括第一支路和第二支路。控制器在第一支路中采用硬切换以减少导通损耗。控制器在第二支路采用零电压来减少开关损耗。

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