Cascade-comparator A/D converter
    33.
    发明授权
    Cascade-comparator A/D converter 失效
    级联比较器A / D转换器

    公开(公告)号:US4542370A

    公开(公告)日:1985-09-17

    申请号:US419475

    申请日:1982-09-17

    IPC分类号: H03M1/00 H03K13/175

    CPC分类号: H03M1/16 H03M1/361

    摘要: In an A/D converter in which a first comparator A/D converter for providing the most significant bits of a digital output and a second comparator A/D converter for providing the least significant bits of the digital output are cascaded, a switching circuit is provided between the first A/D converter and the second A/D converter. This switching circuit is responsive to the comparison between an analog input voltage and first comparison reference voltages in the first A/D converter to apply two adjacent first reference voltages between which the analog input voltages lies to both ends of a voltage dividing circuit network of the second A/D converter to thereby provide second comparison reference voltages. In the second A/D converter, the second comparison reference voltages are compared with the analog input voltage by comparators, to provide the least significant bits of a digital output.

    摘要翻译: 在A / D转换器中,级联用于提供数字输出的最高有效位的第一比较器A / D转换器和用于提供数字输出的最低有效位的第二比较器A / D转换器, 设置在第一A / D转换器和第二A / D转换器之间。 该开关电路响应于第一A / D转换器中的模拟输入电压和第一比较参考电压之间的比较,以施加两个相邻的第一参考电压,模拟输入电压之间位于模拟输入电压的分压电路网络的两端 第二A / D转换器,从而提供第二比较参考电压。 在第二A / D转换器中,通过比较器将第二比较参考电压与模拟输入电压进行比较,以提供数字输出的最低有效位。

    3,7-Disubstituted-2 or 3-cephem-4-carboxylic acid compounds
    34.
    发明授权
    3,7-Disubstituted-2 or 3-cephem-4-carboxylic acid compounds 失效
    3,7-二取代-2或3-头孢烯-4-羧酸化合物

    公开(公告)号:US4327093A

    公开(公告)日:1982-04-27

    申请号:US85684

    申请日:1979-10-17

    CPC分类号: C07D501/14

    摘要: 3,7-Disubstituted-2 or 3-cephem-4-carboxylic acid compounds of the formula: ##STR1## wherein R.sup.1 is acylamino or ar(lower)alkylamino; R.sup.2 is carboxy or carboxy protected by a pharmaceutically acceptable group; --N--R.sup.3, R.sup.4 is di(lower)alkylamino(lower)alkylamino, an unsaturated or saturated 3 to 8 membered heteromonocyclic (lower)alkylamino group containing 1 to 4 nitrogen atoms, an unsaturated or saturated 3 to 8 membered heteromonocyclic (lower)alkylamino group containing 1 to 4 nitrogen atoms substituted by lower alkyl or hydroxy(lower) alkyl, an unsaturated or saturated 5 to 6 membered heteromonocyclic group containing 2 to 4 nitrogen atoms, an unsaturated or saturated 5 to 6 membered heteromonocyclic group containing 2 to 4 nitrogen atoms substituted by lower alkyl or hydroxy(lower)alkyl or hydroxypiperidino, and X is --S-- or ##STR2## and pharmaceutically acceptable salts thereof. The present compounds are useful for the treatment of infectious diseases in animals and human beings.

    摘要翻译: 3,7-二取代的2-或3-头孢烯-4-羧酸化合物,其结构式如下:其中R 1是酰氨基或芳(低级)烷基氨基; R2是被药学上可接受的基团保护的羧基或羧基; -N-R3,R4是二(低级)烷基氨基(低级)烷基氨基,含有1-4个氮原子的不饱和或饱和的3至8元杂单环(低级)烷基氨基,不饱和或饱和的3至8元杂单环(低级) 由低级烷基或羟基(低级)烷基取代的含有1至4个氮原子的烷基氨基,含2-4个氮原子的不饱和或饱和5至6元杂单环基团,含有2至4个不饱和或饱和的5至6元杂单环基团 被低级烷基或羟基(低级)烷基或羟基哌啶子基取代的氮原子,X是-S-或其药学上可接受的盐。 本发明化合物可用于治疗动物和人类的感染性疾病。

    RMS circuit
    35.
    发明授权
    RMS circuit 失效
    RMS电路

    公开(公告)号:US4109165A

    公开(公告)日:1978-08-22

    申请号:US768367

    申请日:1977-02-14

    CPC分类号: G06G7/24 G01R19/02 H03G7/002

    摘要: An RMS circuit comprising a logarithmic amplifying circuit, a fullwave rectifying circuit for subjecting an output from the logarithmic amplifying circuit to fullwave rectification, and a smoothing circuit for smoothing an output signal from the fullwave rectifying circuit, wherein the logarithmic amplifying circuit is provided with an operational amplifier whose noninverting input terminal is grounded and whose inverting input terminal is connected to a signal source; a first npn transistor whose collector is connected to the inverting input terminal of the operational amplifier and whose base is grounded; a first diode whose anode is connected to the emitter of the first npn transistor and whose cathode is connected to the output terminal of the operational amplifier; a second diode whose anode is connected to the output terminal of the operational amplifier; and a third diode whose anode is connected to the cathode of the second diode and whose cathode is connected to the noninverting input terminal of the operational amplifier.

    Fluid-quality control method, fluid-quality control apparatus, and electric-discharge machining apparatus employing the same
    38.
    发明授权
    Fluid-quality control method, fluid-quality control apparatus, and electric-discharge machining apparatus employing the same 有权
    流体质量控制方法,流体质量控制装置和采用该方法的放电加工装置

    公开(公告)号:US08217296B2

    公开(公告)日:2012-07-10

    申请号:US11997881

    申请日:2006-04-05

    IPC分类号: B23H1/10 C02F1/42

    CPC分类号: B23H1/10 B23H7/36

    摘要: Target fluid is made into electrolyte solution when measured fluid-quality value is lower than a first condition value, by substituting an impurity anion contained in the target fluid with a predetermined anion and substituting an impurity cation contained in the target fluid with a predetermined cation, and purified when the fluid-quality value is higher than a second condition value. The above procedures are repeated, so that the fluid-quality value of the target fluid falls within a predetermined range, to make the target fluid into electrolyte solution with a correlation between pH and conductivity.

    摘要翻译: 当测量的流体质量值低于第一条件值时,通过用预定的阴离子代替包含在目标流体中的杂质阴离子并用预定的阳离子代替目标流体中所含的杂质阳离子,将目标流体制成电解质溶液, 并且当流体质量值高于第二条件值时净化。 重复上述过程,使得目标流体的流体质量值落在预定范围内,以使目标流体以pH和电导率之间的相关性进入电解质溶液。

    Thin-film crystal wafer having pn junction and method for fabricating the wafer
    40.
    发明授权
    Thin-film crystal wafer having pn junction and method for fabricating the wafer 有权
    具有pn结的薄膜晶体晶片和用于制造晶片的方法

    公开(公告)号:US07923752B2

    公开(公告)日:2011-04-12

    申请号:US10046739

    申请日:2002-01-17

    IPC分类号: H01L29/735 H01L29/739

    CPC分类号: H01L29/66318 H01L29/205

    摘要: A thin-film crystal wafer having a pn junction includes a first crystal layer of p GaAs, a second crystal layer of n InxAlyGa1−x−yP, the first and second crystal layers being lattice-matched layers that form a heterojunction, and a control layer of a thin-film of InxAlyGa1−x−yP differing in composition from the n InxAlyGa1−x−yP of the second crystal layer is formed at the interface of the heterojunction. The control layer enables the energy discontinuity at the interface of the InxAlyGa1−x−yP/GaAs heterojunction to be set within a relatively broad range of values and thus enables the current amplification factor and the offset voltage to be matched to specification values by varying the energy band gap at the heterojunction.

    摘要翻译: 具有pn结的薄膜晶体晶片包括p GaAs的第一晶体层,n In x Al y Ga 1-x-y P的第二晶体层,第一和第二晶体层是形成异质结的晶格匹配层,以及控制 在异质结的界面处形成与第二晶体层的n In x Al y Ga 1-x-y P的组成不同的In x Al y Ga 1-x-y P的薄膜层。 控制层使InxAlyGa1-x-yP / GaAs异质结的界面处的能量不连续性设定在相对宽的值范围内,从而使电流放大系数和偏移电压能够通过改变 异质结能带隙。