公开(公告)号：US20070201671A1

公开(公告)日：2007-08-30

申请号：US11363974

申请日：2006-02-27

申请人： Clark Tollerson

发明人： Clark Tollerson

IPC分类号： H04M3/00 ,  H04M5/00

CPC分类号： H04M19/08

摘要： A conducted emissions filter is disclosed. The filter includes a main supply port adapted to provide a power signal to a power supply port, along with a common mode choke coupled between the main supply port and the power supply port with at least one adjustable level of inductance for substantially matching a level of impedance introduced through the power supply port without adversely impacting operation of the filter. The filter further includes at least one filter attenuation element connected across return and supply lines between the at least one common mode choke and the power supply port, at least one return line noise return connected to the return line between the at least one filter attenuation element and the power supply port, and at least one supply line noise return connected to the supply line between the at least one filter attenuation element and the power supply port.

摘要翻译： 公开了一种传导发射滤波器。 滤波器包括主供应端口，其适于向电源端口提供功率信号，以及耦合在主供电端口和电源端口之间的共模扼流圈，具有至少一个可调节电平的电平，用于基本上匹配 通过电源端口引入的阻抗，而不会对滤波器产生不利影响。 滤波器还包括至少一个滤波衰减元件，该滤波器衰减元件连接在至少一个共模扼流圈和电源端口之间的返回电源线和电源线之间，至少一个返回线路噪声返回，连接到至少一个滤波器衰减元件 和电源端口，以及连接到至少一个滤波器衰减元件和电源端口之间的电源线的至少一个电源线路噪声返回。

公开(公告)号：US06898543B2

公开(公告)日：2005-05-24

申请号：US10201512

申请日：2002-07-23

申请人： Juan A. Espinoza ,  L. Grant Giddens ,  Clark Tollerson

发明人： Juan A. Espinoza ,  L. Grant Giddens ,  Clark Tollerson

IPC分类号： G01R23/00 ,  G06F19/20 ,  H04M1/24

CPC分类号： G01R23/005

摘要： Testing an oscillator and other electronic devices on a circuit board. One method of the present invention comprises powering the oscillator. Providing test instructions to a microprocessor on the circuit board to place the microprocessor in a test mode. Receiving a clock signal from the oscillator at a multiplexer in a field programmable gate array. Receiving operating instructions at the multiplexer from the microprocessor. Multiplexing the clock signal to an external access port with the multiplexer in response to the operating instructions and measuring the frequency of the clock signal at the external access port.

摘要翻译： 在电路板上测试振荡器和其他电子设备。 本发明的一种方法包括给振荡器供电。 向电路板上的微处理器提供测试指令，以将微处理器置于测试模式。 在现场可编程门阵列中的多路复用器处从振荡器接收时钟信号。 从微处理器接收多路复用器的操作指令。 响应于操作指令并且测量外部接入端口处的时钟信号的频率，将时钟信号复用到多路复用器的外部访问端口。