Function generator
    48.
    发明授权
    Function generator 失效
    功能发生器

    公开(公告)号:US3633042A

    公开(公告)日:1972-01-04

    申请号:US3633042D

    申请日:1969-10-02

    Inventor: NEVILLE DEE J

    CPC classification number: H03K6/04 H03K4/50

    Abstract: A storage capacitance across which a ramp function signal is to be generated is serially related through a fixed resistor, electric signal variable-voltage solid-state device to a source of charging current. The potential developed across the capacitance is one input to a differential amplifier. Selectively variable potentiometers relate the differential amplifier output to the variable-voltage device correspondingly controlling the capacitance charging current. A further aspect is the use of back-to-back diodes for appropriate poling of the signal from the potentiometers to the solid-state device.

    Abstract translation: 要产生斜坡功能信号的存储电容通过固定电阻器,电信号可变电压固态器件与充电电流源串联相关。 电容产生的电位是差分放大器的一个输入。 选择性可变电位器将差分放大器输出与可变电压装置相关联,以对应地控制电容充电电流。 另一方面是使用背对背二极管将信号从电位器适当地极化到固态器件。

    Instrument for gauging liquid depth,and the like
    49.
    发明授权
    Instrument for gauging liquid depth,and the like 失效
    仪器仪表液压深度等

    公开(公告)号:US3555903A

    公开(公告)日:1971-01-19

    申请号:US3555903D

    申请日:1969-08-04

    Inventor: GLASSEY EUGENE A

    CPC classification number: G01F23/165

    Abstract: AN INSTRUMENT TO GAUGE LIQUID DEPTH AND QUANTITY AND THE WEIGHT OF SNOW PACK BY PURGE BUBBLE PRINCIPLE OR OTHER MEANS. PRESSURE, WHICH IS A FUNCTION OF THE DEPTH, QUANTITY OR WEIGHT, IS APPLIED TO A BELLOWS WHICH IN TURN IS APPLIED TO A BEAM BALANCE. THE POISE OF THE BALANCE IS DRIVEN ALONG THE BEAM BY A REVERSIBLE ELECTRIC MOTOR AND A WIRE RUNNING OVER PULLEYS LOCATED ADJACENT THE BEAM. THE MOTOR IS ENERGIZED BY ELECTRIC CONTACTS ASSOCIATED WITH THE BEAM.

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