Peak detector and amplifier circuit
    3.
    发明授权
    Peak detector and amplifier circuit 失效
    峰值检波器和放大器电路

    公开(公告)号:US3701908A

    公开(公告)日:1972-10-31

    申请号:US3701908D

    申请日:1971-02-01

    Abstract: An output circuit is provided for use with a chromatographic analyzer. The analyzer output is amplified and passed through an attenuation network to an integrator. The output signal from the integrator is applied selectively through an amplifier to the input of the first amplifier to provide an automatic zero circuit. Additional differentiating, peak reading and storage circuits are selectively connected to the output of the integrator.

    Abstract translation: 提供输出电路用于色谱分析仪。 分析仪输出被放大并通过衰减网络传递到积分器。 来自积分器的输出信号通过放大器被选择性地施加到第一放大器的输入端以提供自动零电路。 额外的微分,峰值读取和存储电路选择性地连接到积分器的输出。

    Temperature control system
    5.
    发明授权
    Temperature control system 失效
    温度控制系统

    公开(公告)号:US3632986A

    公开(公告)日:1972-01-04

    申请号:US3632986D

    申请日:1970-05-18

    Inventor: NEER HAROLD M

    CPC classification number: G05D23/24 G05D23/1906

    Abstract: A temperature-sensing thermistor and a heating element are positioned in a region of temperature to be controlled. The thermistor is connected in a bridge circuit, the output of which charges a capacitor. The voltage on the capacitor controls the firing of a thyristor which passes current to the heating element. Means are provided for discharging the capacitor periodically.

    Abstract translation: 温度感测热敏电阻和加热元件位于要控制的温度区域中。 热敏电阻连接在桥式电路中,其输出端对电容器充电。 电容器上的电压控制将电流传递到加热元件的晶闸管的点火。 提供用于周期性地使电容器放电的装置。

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