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1. 发明授权

US4994952A Low-noise switching power supply having variable reluctance transformer 失效
标题翻译：具有可变磁阻变压器的低噪声开关电源
公开(公告)号：US4994952A
公开(公告)日：1991-02-19
申请号：US410142
申请日：1989-09-20
申请人： Donald M. Silva , LeRoy F. Silva , Fred M. Fehsenfeld, Sr.
发明人： Donald M. Silva , LeRoy F. Silva , Fred M. Fehsenfeld, Sr.
IPC分类号： H01F29/14 , H02M3/337
CPC分类号： H01F29/14 , H02M3/3372 , H01F2029/143 , H01F2038/026 , Y10S174/17
摘要： There is provided a low-noise switching power supply for producing a regulated output voltage from an unregulated supply. The power supply includes a main transformer having first, second and third legs. A primary winding associated with a first leg produces an alternating magnetic flux in the core. A load winding associated with a second leg produces the output voltage from the power supply. A control winding is associated with the third leg. The regulated output voltage is compared to a reference voltage and used to operate a control circuit which alternately short circuits the control winding so as to vary the reluctance pass in the transformer and maintain the output voltage at a substantially constant predetermined value. A feedback circuit including a coupling transformer connects the primary coil to the switching circuit to improve regulation and provide a "soft start" capability.A second embodiment of the present invention utilizes a constant frequency source to drive the main switching transistors of the unregulated power supply instead of the self oscillating scheme.
摘要翻译：提供了一种用于从不受监管的电源产生稳定的输出电压的低噪声开关电源。电源包括具有第一，第二和第三支腿的主变压器。与第一腿相关联的初级绕组在芯中产生交变磁通。与第二支路相关联的负载绕组产生来自电源的输出电压。控制绕组与第三支腿相关联。将调节的输出电压与参考电压进行比较，并用于操作控制电路，该控制电路交替地使控制绕组短路，以便改变变压器中的磁阻，并将输出电压保持在基本恒定的预定值。包括耦合变压器的反馈电路将初级线圈连接到开关电路以改善调节并提供“软启动”功能。本发明的第二实施例利用恒定频率源来驱动未调节电源的主开关晶体管而不是自振荡方案。

2. 发明授权

US5388848A Motorcycle kick stand 失效
标题翻译：摩托车踢脚
公开(公告)号：US5388848A
公开(公告)日：1995-02-14
申请号：US89283
申请日：1993-07-12
申请人： Leroy F. Silva , Darwayne Fisher
发明人： Leroy F. Silva , Darwayne Fisher
IPC分类号： B62H1/02 , B62H1/06
CPC分类号： B62H1/06 , B62H1/02
摘要： A new and improved kick stand apparatus for a two-wheeled vehicle, such as motorcycle, includes respective independently operable, first and second leg assemblies, each respective leg assembly being connected to the vehicle and capable of being placed in a lowered position or in a retracted position by an operator's foot. The kick stand apparatus is for preventing the motorcycle from falling onto one side or the other when the motorcycle is parked. When both the first leg assembly and the second leg assembly are in a lowered position, together they are capable of maintaining the parked motorcycle in an upright orientation. In employing the apparatus, a leg member of the first leg assembly is lowered from a retracted position. The motorcycle is leaned toward the lowered leg member of the first leg assembly, and the motorcycle is permitted to rest in a first rest position upon a foot of the first leg assembly. Then, a leg member of the second leg assembly is lowered from a retracted position. Then, using a sideways rocking motion, the motorcycle is moved from the first rest position to a second rest position wherein the motorcycle rests upon both the lowered leg member of the second leg assembly and the lowered leg member of the first leg assembly. In the second rest position, the motorcycle is maintained in an upright orientation by the lowered leg members of both the first and second leg assemblies.
摘要翻译：用于诸如摩托车的两轮车辆的新的改进的踢脚架设备包括各自独立可操作的第一和第二腿部组件，每个相应的腿部组件连接到车辆并且能够被放置在降低的位置由操作者的脚缩回位置。脚踏架设备用于在摩托车停放时防止摩托车落到一侧或另一侧。当第一腿组件和第二腿组件都处于降低位置时，它们一起能够将停放的摩托车保持在竖直的方向。在使用该装置时，第一腿组件的腿部构件从缩回位置下降。摩托车靠在第一腿部组件的下部腿部件上，并且允许摩托车在第一腿部组件的脚部处于第一休息位置。然后，第二腿部组件的腿部构件从缩回位置下降。然后，使用侧向摇摆运动，摩托车从第一静止位置移动到第二静止位置，其中摩托车靠在第二腿部组件的下降的腿部构件和第一腿部组件的下降的腿部构件。在第二静止位置，摩托车通过第一和第二腿部组件的下降的腿部构件保持竖直的方向。

3. 发明授权

US4876638A Low-noise switching power supply having variable reluctance transformer 失效
标题翻译：具有可变磁阻变压器的低噪声开关电源
公开(公告)号：US4876638A
公开(公告)日：1989-10-24
申请号：US154863
申请日：1988-02-10
申请人： Donald M. Silva , Leroy F. Silva , Fred M. Fehsenfeld, Sr.
发明人： Donald M. Silva , Leroy F. Silva , Fred M. Fehsenfeld, Sr.
IPC分类号： H01F29/14 , H02M3/337
CPC分类号： H02M3/3372 , H01F29/14 , H01F2029/143 , H01F2038/026
摘要： There is provided a low-noise switching power supply for producing a regulated output voltage from an unregulated supply. The power supply includes a main transformer having first, second and third legs. A primary winding associated with a first leg produces an alternating magnetic flux in the core. A load winding associated with a second leg produces the output voltage from the power supply. A control winding is associated with the third leg. The regulated output voltage is compared to a reference voltage and used to operate a control circuit which alternately short circuits the control winding so as to vary the reluctance pass in the transformer and maintain the output voltage at a substantially constant predetermined value. A feedback circuit including a coupling transformer connects the primary coil to the switching circuit to improve regulation and provide a "soft start" capability.
摘要翻译：提供了一种用于从不受监管的电源产生稳定的输出电压的低噪声开关电源。电源包括具有第一，第二和第三支腿的主变压器。与第一腿相关联的初级绕组在芯中产生交变磁通。与第二支路相关联的负载绕组产生来自电源的输出电压。控制绕组与第三支腿相关联。将调节的输出电压与参考电压进行比较，并用于操作控制电路，该控制电路交替地使控制绕组短路，以便改变变压器中的磁阻，并将输出电压保持在基本恒定的预定值。包括耦合变压器的反馈电路将初级线圈连接到开关电路以改善调节并提供“软起动”功能。

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