公开(公告)号：US5801602A

公开(公告)日：1998-09-01

申请号：US641375

申请日：1996-04-30

Applicant: Marwan Ahmad Fawal ,  Anthony Liem Pan ,  Eric Roger Davis ,  Richard Sidney Reid

Inventor： Marwan Ahmad Fawal ,  Anthony Liem Pan ,  Eric Roger Davis ,  Richard Sidney Reid

IPC: H01F17/00 ,  H01F19/04 ,  H03H7/09

CPC classification number: H01F17/0006 ,  H01F19/04 ,  H01F2019/085 ,  H03H2001/0078 ,  H03H7/427

Abstract: One embodiment of the invention includes a transformer that is at least partially formed on a substrate. The transformer is for electrical isolation and signal filtering. The transformer includes the following elements. A portion of the substrate has two holes through the substrate. A ferrite core is formed in a loop through the two holes. A primary winding is made of a first metal trace. The first metal trace is formed in a spiral around one hole. The first metal trace has at least two primary terminals acting as an input to the transformer. The transformer also includes a secondary winding. The secondary winding is made of a second metal trace. The second metal trace is formed in a spiral around the other hole. The second metal trace has at least two secondary terminals acting as an output from the transformer. The parasitic capacitance of the first metal trace and the magnetizing inductance of the primary winding cause signals received at the primary terminals to be filtered as the signals are passed through the transformer to the secondary terminals.

公开(公告)号：US08212601B2

公开(公告)日：2012-07-03

申请号：US12915464

申请日：2010-10-29

Applicant: Eric Roger Davis

Inventor： Eric Roger Davis

IPC: H03K5/22

CPC classification number: G06F11/1604 ,  G06F11/20

Abstract: A method and apparatus for providing system clock failover using a one-shot circuit are disclosed. A process, in one embodiment, is able to detect a clock failure using a one-shot circuit, wherein the clock signals are generated by a first clock circuit. Upon generating a switching signal in response to the clock failure, a system reset signal is asserted for a predefined time period in accordance with the clock failure. After switching a second clock circuit to replace the first clock circuit, the process is capable of resuming the clock signals via the second clock circuit.

Abstract translation: 公开了一种使用单触发电路提供系统时钟故障切换的方法和装置。 在一个实施例中，可以使用单触发电路来检测时钟故障，其中时钟信号由第一时钟电路产生。 在响应于时钟故障产生切换信号时，系统复位信号根据时钟故障断言预定义的时间段。 在切换第二时钟电路以替换第一时钟电路之后，该处理能够经由第二时钟电路恢复时钟信号。

公开(公告)号：US20120105112A1

公开(公告)日：2012-05-03

申请号：US12915464

申请日：2010-10-29

Applicant: Eric Roger Davis

Inventor： Eric Roger Davis

IPC: H03L7/00

CPC classification number: G06F11/1604 ,  G06F11/20

Abstract: A method and apparatus for providing system clock failover using a one-shot circuit are disclosed. A process, in one embodiment, is able to detect a clock failure using a one-shot circuit, wherein the clock signals are generated by a first clock circuit. Upon generating a switching signal in response to the clock failure, a system reset signal is asserted for a predefined time period in accordance with the clock failure. After switching a second clock circuit to replace the first clock circuit, the process is capable of resuming the clock signals via the second clock circuit.

Abstract translation: 公开了一种使用单触发电路提供系统时钟故障切换的方法和装置。 在一个实施例中，可以使用单触发电路来检测时钟故障，其中时钟信号由第一时钟电路产生。 在响应于时钟故障产生切换信号时，系统复位信号根据时钟故障断言预定义的时间段。 在切换第二时钟电路以替换第一时钟电路之后，该处理能够经由第二时钟电路恢复时钟信号。

公开(公告)号：US6049258A

公开(公告)日：2000-04-11

申请号：US75373

申请日：1998-05-11

Applicant: Marwan A. Fawal ,  Anthony Liem Pan ,  Eric Roger Davis ,  Richard Sidney Reid

Inventor： Marwan A. Fawal ,  Anthony Liem Pan ,  Eric Roger Davis ,  Richard Sidney Reid

IPC: H01F17/00 ,  H01F19/04 ,  H03H7/09

CPC classification number: H01F17/0006 ,  H01F19/04 ,  H01F2019/085 ,  H03H2001/0078 ,  H03H7/427

Abstract: One embodiment of the invention includes a transformer that is at least partially formed on a substrate. The transformer is for electrical isolation and signal filtering. The transformer includes the following elements. A portion of the substrate has two holes through the substrate. A ferrite core is formed in a loop through the two holes. A primary winding is made of a first metal trace. The first metal trace is formed in a spiral around one hole. The first metal trace has at least two primary terminals acting as an input to the transformer. The transformer also includes a secondary winding. The secondary winding is made of a second metal trace. The second metal trace is formed in a spiral around the other hole. The second metal trace has at least two secondary terminals acting as an output from the transformer. The parasitic capacitance of the first metal trace and the magnetizing inductance of the primary winding cause signals received at the primary terminals to be filtered as the signals are passed through the transformer to the secondary terminals.

Abstract translation: 本发明的一个实施例包括至少部分地形成在基板上的变压器。 变压器用于电气隔离和信号滤波。 变压器包括以下元件。 衬底的一部分具有穿过衬底的两个孔。 铁氧体磁芯通过这两个孔形成环路。 初级绕组由第一金属轨迹制成。 第一个金属轨迹围绕一个孔形成螺旋形。 第一金属轨迹具有至少两个初级端子用作变压器的输入端。 变压器还包括一个次级绕组。 次级绕组由第二金属轨迹制成。 第二金属轨迹围绕另一个孔形成螺旋形。 第二金属轨迹具有至少两个用作变压器的输出的次级端子。 第一金属迹线的寄生电容和初级绕组的磁化电感使得信号在初级端子处接收的信号被滤波，因为信号通过变压器到二级端子。