公开(公告)号：US20080073974A1

公开(公告)日：2008-03-27

申请号：US11902378

申请日：2007-09-21

申请人： Michael Madigan

发明人： Michael Madigan

IPC分类号： H02J3/14 ,  H02J1/00

CPC分类号： H02M3/33561 ,  Y10T307/25 ,  Y10T307/297 ,  Y10T307/406

摘要： A power equalization circuit in a transformer-based device having a plurality of isolated voltage outputs is provided. The circuit comprises: a threshold detection circuit configured to receive an error signal derived from a selected voltage at one of the isolated voltage outputs, and to determine whether the selected voltage is above a voltage threshold based on the error signal; a timer circuit configured to activate a wait signal after a maximum voltage drift time has expired since the selected voltage rose above the voltage threshold, and to activate a wink signal coincident with the wait signal; an overdrive current source configured to drive an error current to an overdriven value in response to the wait signal; and a commutator circuit connected to a transistor winding associated with the selected isolated voltage output, the commutator being configured to connect a transformer secondary winding to ground in response to the wink signal.

摘要翻译： 提供了一种具有多个隔离电压输出的基于变压器的装置中的功率均衡电路。 该电路包括：阈值检测电路，被配置为接收从隔离电压输出之一处的选定电压导出的误差信号，并且基于误差信号确定所选择的电压是否高于电压阈值; 定时器电路，被配置为在所选择的电压升高到高于电​​压阈值之后，在最大电压漂移时间到期之后激活等待信号，并激活与等待信号一致的闪烁信号; 过驱动电流源，被配置为响应于等待信号将误差电流驱动到过驱动值; 以及连接到与所选择的隔离电压输出相关联的晶体管绕组的换向器电路，所述换向器被配置为响应于所述闪烁信号将变压器次级绕组连接到地。

公开(公告)号：US06886197B1

公开(公告)日：2005-05-03

申请号：US10307548

申请日：2002-12-02

申请人： John Michael Madigan

发明人： John Michael Madigan

IPC分类号： A47G9/02 ,  A47G21/00

CPC分类号： A47G9/02

摘要： This invention relates to an assembly of bedclothes for a mattress for making a bed, and more specifically, to: a mattress cover; a bottom sheet; a top sheet; one or more blankets; a bed assembly covering in the front of a bedspread, comforter or duvet cover; and a dust ruffle; and to a method of assembling and fastening said bedclothes assembly. A second embodiment provides for the top and bottom sheets to be integrated.

摘要翻译： 本发明涉及一种用于制造床的床垫的床上用品组件，更具体地说，涉及：床垫罩; 底片; 顶页 一个或多个毯子; 床罩组件覆盖在床罩，被子或羽绒被的前面; 和灰尘皱纹; 以及组装和紧固所述床上用品组件的方法。 第二实施例提供了顶部和底部片材的集成。

公开(公告)号：US20050018453A1

公开(公告)日：2005-01-27

申请号：US10625265

申请日：2003-07-23

申请人： Larry Wofford ,  Michael Madigan ,  Thomas Mathes

发明人： Larry Wofford ,  Michael Madigan ,  Thomas Mathes

IPC分类号： H02M1/00 ,  H02M1/12 ,  H02M1/32

CPC分类号： H02M1/32 ,  H02M2001/0022 ,  H02M2001/0025

摘要： A system and method are disclosed to limit a maximum duty cycle and/or provide a volt-second clamp for a pulse-width modulated (PWM) signal. Depending on the circuit topology, this approach can limit the absolute duty cycle or operate as a volt-second clamp in which the duty cycle is limited as a function of a variable input control voltage, such as a line voltage. The duty cycle can be selectively programmed by setting one or more external reference components, such as one or more respective resistors. Additionally, through component matching, desired clamping can be achieved with a high level of accuracy.

摘要翻译： 公开了限制最大占空比的系统和方法和/或为脉冲宽度调制（PWM）信号提供伏秒钳位。 根据电路拓扑结构，该方法可以限制绝对占空比或作为伏特钳位操作，其中占空比受到可变输入控制电压（如线路电压）的函数的限制。 可以通过设置一个或多个外部参考组件（例如一个或多个相应电阻器）来选择性地编程占空比。 另外，通过部件匹配，可以以高精度实现期望的夹紧。