公开(公告)号：US5264783A

公开(公告)日：1993-11-23

申请号：US823094

申请日：1992-01-21

申请人： Ravi Vig ,  Mark C. Hopkins ,  Jay M. Towne

发明人： Ravi Vig ,  Mark C. Hopkins ,  Jay M. Towne

IPC分类号： G05F1/635 ,  H03K17/90

CPC分类号： G05F1/635

摘要： An electrical power controller includes an integrated circuit having a Hall element, a Hall voltage amplifier, a ramp signal generator, and a voltage comparator. The output of the ramp generator is connected to one input of the voltage comparator and the output of the Hall voltage amplifier is connected to the outer comparator input. During intervals when the amplified Hall voltage exceeds the ramp voltage, the output of the comparator changes from one binary state to the other such that a stream of pulses is generated at the output of the comparator. Thus as a magnetic field at the Hall element increases, the Hall voltage increases and the width of each pulse in the stream of pulses grows proportionally. Mechanical means is provided for manually moving and guiding the pole of a magnet along a path toward the integrated circuit. Constructions of such controllers adapted for use as lamp dimmers and DC motor speed controllers are described.

摘要翻译： 电力控制器包括具有霍尔元件，霍尔电压放大器，斜坡信号发生器和电压比较器的集成电路。 斜坡发生器的输出连接到电压比较器的一个输入端，霍尔电压放大器的输出端连接到外部比较器输入。 在放大的霍尔电压超过斜坡电压的间隔期间，比较器的输出从一个二进制状态变为另一个，使得在比较器的输出端产生脉冲流。 因此，当霍尔元件的磁场增加时，霍尔电压增加，并且脉冲流中的每个脉冲的宽度成比例地增长。 提供了用于沿着朝向集成电路的路径手动地移动和引导磁体的磁极的机械装置。 描述适用于灯调光器和直流电动机速度控制器的这种控制器的结构。