会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Precision differential relaxation oscillator circuit
    • 精密差分放大振荡电路
    • US4377790A
    • 1983-03-22
    • US298126
    • 1981-08-31
    • Don W. ZobelW. David Pace
    • Don W. ZobelW. David Pace
    • H03K4/50H03K4/501H03K4/502
    • H03K4/502
    • A relaxation oscillator which is suited for fabrication as a monolithic circuit and which uses a parallel resistive capacitive frequency determining network wherein a capacitor is charged and discharged between an upper and lower voltage level. As the capacitor is charged to a potential exceeding a first threshold voltage level supplied to a comparator switch, the operating state of the comparator is caused to switch. A current detecting circuit is included which detects a current that is proportional to the charging current supplied to the capacitor from a charge circuit. As the proportional current decreases in value below a predetermined level due to the capacitor being charged to the upper voltage level the current detecting circuit is disabled which actuates a control circuit for switching the threshold voltage applied to the comparator to a lower level. The actuated control circuit also disables the charge circuit such that the capacitor discharges to the lower voltage level at which time the comparator switches states to disable the control circuit whereby the threshold voltage level is switched to the first level. Thereafter, the charge circuit is enabled to enable the current detecting circuit and to charge the capacitor to the upper voltage level.
    • 一种弛豫振荡器,其适用于制造为单片电路并且使用并联阻性电容性频率确定网络,其中电容器在上和下电压电平之间被充电和放电。 当电容器充电到超过提供给比较器开关的第一阈值电压电平的电位时,使比较器的工作状态转变。 包括电流检测电路,其检测与从充电电路提供给电容器的充电电流成比例的电流。 由于电容器被充电到较高的电压电平,因为比例电流的值降低到预定的电平以下,所以电流检测电路被禁用,该电流检测电路致动用于将施加到比较器的阈值电压切换到较低电平的控制电路。 致动的控制电路还禁用充电电路,使得电容器放电到较低的电压电平,在此时比较器切换状态以禁用控制电路,由此将阈值电压电平切换到第一电平。 此后,使充电电路能够使电流检测电路和电容器充电到较高的电压电平。
    • 5. 发明授权
    • Current biasing for I.sup.2 L circuits
    • I2L电路的电流偏置
    • US5093585A
    • 1992-03-03
    • US674477
    • 1991-03-25
    • Geoffrey W. PerkinsDon W. ZobelTony Takeshian
    • Geoffrey W. PerkinsDon W. ZobelTony Takeshian
    • G05F1/46H03K19/091
    • H03K19/091G05F1/462
    • A negative feedback loop, including a two collector I.sup.2 L gate having one collector returned to the input of the gate and forcing a reference current into the other of the two collectors of the gate, is used to match the current at the collector of the injector of the gate to the reference current. The feedback loop further includes a current source for sourcing the reference current and a pair of cascoded emitter follower transistors coupled between the current source and the injector input of the gate such that the feedback loop will regulate the current through the injector to be equal to the reference current. The injector input of the gate of the feedback loop can be coupled to the injector inputs of similar I.sup.2 L gates to be biased therefrom such that the injector currents are well controlled.
    • 负反馈环路包括两个集电极I2L栅极,其具有一个集电极返回到栅极的输入端,并且将参考电流强制进入栅极的两个集电极中的另一个,用于匹配在注入器的集电极处的电流 门到参考电流。 反馈环路还包括用于提供参考电流的电流源和耦合在电流源和栅极的注入器输入之间的一对级联发射极跟随器晶体管,使得反馈回路将调节通过喷射器的电流等于 参考电流。 反馈环路的栅极的注入器输入端可以耦合到类似的I2L栅极的注入器输入端,从而被偏置,使得注入器电流被良好地控制。
    • 6. 发明授权
    • Frequency compensated high frequency amplifiers
    • 频率补偿高频放大器
    • US4227157A
    • 1980-10-07
    • US001088
    • 1979-01-05
    • Robert B. DaviesDon W. Zobel
    • Robert B. DaviesDon W. Zobel
    • H03F1/08H03F3/30H03F3/213
    • H03F3/3071H03F1/083
    • The disclosed amplifier includes first and second gain stages and first and second frequency compensating capacitors. The second gain stage has a first high impedance node coupled to the first gain stage, a second high impedance node, a first circuit coupled between the first and second high impedance nodes, a third high impedance node, and a second circuit coupled between the second and third high impedance nodes. The impedances at the first, second and third high impedance nodes are a function of frequency and the impedance at the second high impedance node is lower at any given frequency than the impedances at the first and third high impedance nodes. The first frequency compensating capacitor is coupled between the first and third nodes and the second frequency compensating capacitor is coupled between the third and second nodes.
    • 所公开的放大器包括第一和第二增益级以及第一和第二频率补偿电容器。 第二增益级具有耦合到第一增益级的第一高阻抗节点,第二高阻抗节点,耦合在第一和第二高阻抗节点之间的第一电路,第三高阻抗节点和耦合在第二高阻抗节点之间的第二电路 和第三高阻抗节点。 第一,第二和第三高阻抗节点处的阻抗是频率的函数,并且第二高阻抗节点处的阻抗在任何给定频率下比在第一和第三高阻抗节点处的阻抗更低。 第一频率补偿电容器耦合在第一和第三节点之间,第二频率补偿电容器耦合在第三和第二节点之间。
    • 10. 发明授权
    • Integrated circuit sensor circuit
    • 集成电路传感器电路
    • US4780625A
    • 1988-10-25
    • US49770
    • 1987-05-12
    • Don W. Zobel
    • Don W. Zobel
    • H03F1/52H03F3/45H03K5/153H03K5/24
    • H03F1/52H03F3/45071
    • An integrated circuit sensor circuit (10) is disclosed which is operable in differential or single-ended modes at DC input potentials which can be below the integrated circuit substrate bias potential (ground). Substrate injection is prevented and the circuit is operable for input signals which can vary relatively widely with respect to the substrate bias potential. This is accomplished even though only a single polarity power supply (+5 volts) with respect to substrate bias potential is used for the integrated circuit. An input stage of an integrated circuit (16) comprises a pair of identical polarity transistors (23, 24) operated in a differential common base mode with an opposite polarity transistor (25) used to supply appropriate bias potential to the common base connection. This prevents substrate injection while maintaining a wide operative range for the sensor circuit. Additional substrate injection preventing circuitry (31) is provided to maintain the collectors of the differential input transistors above the integrated circuit substrate base potential, and input protection circuitry (32-35) is used to limit the magnitude of applied input signals.
    • 公开了一种集成电路传感器电路(10),其可以在可以低于集成电路衬底偏置电位(接地)的DC输入电位下以差分或单端模式工作。 防止衬底注入,并且该电路可操作用于可相对于衬底偏置电位相对较宽变化的输入信号。 即使对于集成电路仅使用相对于衬底偏置电位的单极性电源(+5伏特)也是这样。 集成电路(16)的输入级包括以差分公共基极模式工作的一对相同的极性晶体管(23,24),其中相反极性晶体管(25)用于向公共基极连接提供适当的偏置电位。 这可以防止基板注入,同时保持传感器电路的宽工作范围。 提供附加的基板注入防止电路(31)以将差分输入晶体管的集电极保持在集成电路基板基极电位以上,并且输入保护电路(32-35)用于限制所施加的输入信号的幅度。