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    • 4. 发明授权
    • Delay circuit
    • 延时电路
    • US5231313A
    • 1993-07-27
    • US710606
    • 1991-06-05
    • Sakae Itoh
    • Sakae Itoh
    • G05B11/36G05B11/16H03K5/13H03K5/133H03K5/135
    • H03K5/135
    • A delay clock signal is generated by delaying an input clock signal by a predetermined time interval with a delay circuit, and is subjected to frequency division with a frequency divider circuit to generate a reference clock signal. This delay clock signal and the input clock signal are provided to a flip-flop to generate a first electronic state signal when the input clock signal turns from "High" to "Low", and a second electronic state signal when the reference clock signal turns from "High" to "Low", and to electronically activate a control object during the time the second electronic state signal is inputted.
    • 通过用延迟电路将输入时钟信号延迟预定时间间隔来产生延迟时钟信号,并且利用分频器电路进行分频以产生参考时钟信号。 当输入时钟信号从“高”变为“低”时,该延迟时钟信号和输入时钟信号被提供给触发器以产生第一电子状态信号,而当参考时钟信号转为 从“高”到“低”,并且在输入第二电子状态信号的时间期间电子地激活控制对象。
    • 9. 发明授权
    • Motor control apparatus for three position valve
    • 三位阀电机控制装置
    • US3974427A
    • 1976-08-10
    • US521611
    • 1974-11-07
    • Kenneth G. Carson
    • Kenneth G. Carson
    • G05B11/16G05D23/275G05B11/06H02P3/18
    • G05B11/16G05D23/275
    • A motor control apparatus having an electric motor which is driven in one direction by an alternating current power source and in a return direction by a spring return wherein a holding or braking of the motor is accomplished by the application of a source of direct current power to magnetize the motor and hold it in a predetermined intermediate position after the removal of the alternating current power source. The braking or holding action is removed by taking away the direct current power source and momentarily applying an alternating current power source to the motor to de-magnetize or degauss the motor so it is free to return to its initial condition under the power of the spring return. The motor control apparatus is particularly adapted for use to control a three position water valve supplying water to two different areas or zones as required by zone thermostats to have water supplied to one or the other of the zones or both of the zones depending upon the demand by the thermostats and the position of the motorized valve.
    • 一种具有电动机的电动机控制装置,其通过交流电源在一个方向上被驱动并且通过弹簧复位在返回方向上驱动,其中通过将直流电源施加到电动机的电源来实现电动机的保持或制动 在移除交流电源之后使电动机磁化并将其保持在预定的中间位置。 通过取下直流电源并瞬时向电动机施加交流电源来去除电动机的磁化或消磁,从而消除制动或保持动作,使其在弹簧的力量下自由返回到初始状态 返回。 电动机控制装置特别适于用于控制三区位置的水阀,供水到区域恒温器所要求的两个不同的区域或区域,以根据需要向一个或另一个区域或两个区域供水 通过恒温器和电动阀的位置。