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公开(公告)号：US3651353A
公开(公告)日：1972-03-21
申请号：US3651353D
申请日：1969-10-13
Applicant: SUNDSTRAND DATA CONTROL
Inventor： HUGLI HANS W , SIEGEL VERNON H
Abstract: Disclosed is a microphone in the form of a piezoelectric pressure transducer for detecting high intensity noise. The microphone incorporates a lightweight endpiece, preferably of beryllium metal, having a cavity for receiving an acceleration compensation weight. A preloading sleeve is attached at one end to a support while its other end is slipped over a portion of the endpiece and secured by a retaining ring. The microphone is provided with a separate compartment for housing an electric circuit receiving the output from the preloaded quartz crystals of the transducer.
Abstract translation: 公开了一种用于检测高强度噪声的压电式压力传感器形式的麦克风。 该麦克风包括轻质的端部件，优选地为铍金属，具有用于接收加速度补偿重量的空腔。 预加载套筒的一端连接到支撑件上，而另一端滑动在一端的一部分上并通过固定环固定。 麦克风设置有独立的隔间，用于容纳接收来自换能器的预加载的石英晶体的输出的电路。
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22.发明授权Control circuit for compensating for power variations utilizing controlled multipliers or dividers 失效用于补偿使用控制的乘法器或分配器的功率变化的控制电路
公开(公告)号：US3612917A
公开(公告)日：1971-10-12
申请号：US3612917D
申请日：1969-06-26
Applicant: SUNDSTRAND DATA CONTROL
Inventor： SUTCLIFFE JAMES A , KIRSCHNER ROBERT K
CPC classification number: G05B1/02
Abstract: An AC power supply powers several transducer circuits, in which input voltage variations cause variations in the output signals from the transducer circuits. A time division multiplier has an input connected to the AC power supply and a second input connected to a fixed DC voltage source. Variation in AC amplitude change the duty cycle of pulses generated by the multiplier. Semiconductor detector gates are driven by the multiplier pulses in order to demodulate and divide the output signals of the transducer circuits by a factor proportional to the duty cycle, thereby compensating for variations from the AC power supply.
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