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1. 发明授权

US5402082A Voltage and resistance synthesizer using pulse width modulation 失效
标题翻译：电压和电阻合成器采用脉宽调制
公开(公告)号：US5402082A
公开(公告)日：1995-03-28
申请号：US276067
申请日：1994-07-14
申请人： Larry E. Eccleston , Daniel B. Carson
发明人： Larry E. Eccleston , Daniel B. Carson
IPC分类号： G01R1/28 , G01R31/28 , G01R35/00 , G05F1/10 , G05F1/56 , H02J5/00
CPC分类号： G01R35/005 , G01R31/2841
摘要： A voltage and resistance synthesizer includes a pulse width modulator (PWM) for synthesizing voltage and resistance values at a pair of terminals. A selector switch selects between a resistance synthesis mode, in which resistance values are synthesized from a single reference resistor, and a voltage synthesis mode, in which voltage values are synthesized from a single reference voltage. The pulse width modulator permits digital control words to be received which govern the synthesized value with 16 bit resolution. A low pass filter blocks the switching frequency components and provides a d.c. voltage which is the product of the duty cycle and the reference value.
摘要翻译：电压和电阻合成器包括用于合成一对端子的电压和电阻值的脉宽调制器（PWM）。选择器开关选择电阻合成模式，其中电阻值由单个参考电阻合成，并且电压合成模式，其中电压值由单个参考电压合成。脉冲宽度调制器允许接收以16位分辨率管理合成值的数字控制字。低通滤波器阻止开关频率分量，并提供直流。电压是占空比和参考值的乘积。

2. 发明授权

US5012181A Apparatus for and method of internally calibrating an electrical calibrator 失效
标题翻译：电校准仪的内部校准装置和方法
公开(公告)号：US5012181A
公开(公告)日：1991-04-30
申请号：US8234
申请日：1987-01-29
申请人： Larry E. Eccleston
发明人： Larry E. Eccleston
IPC分类号： G01R1/28 , G01R15/12 , G01R35/00 , H03G1/04
CPC分类号： G01R35/005 , G01R15/125 , H03G1/04
摘要： A calibrator supplying electric parameters (viz voltage, current and resistances) over plural ranges to a meter to be calibrated comprises internal components for deriving each parameter over the plural ranges, an internal voltage reference, a DAC, a memory, an analog comparator and analog-to-digital converter. The internal components are connected in circuit with the internal voltage reference, analog-to-digital converter, comparator and memory for writing data signals into the memory indicative of calibration correction factors for the internal components. The internal components are connected in circuit with the memory and DAC so the DAC responds to the stored data signals indicative of the calibration correction factors to enable the value of the parameter supplied to the device by the internal components to be modified and corrected in accordance with the calibration correction for the parameter.
摘要翻译：向要校准的仪表提供多个范围的电参数（Viz电压，电流和电阻）的校准器包括用于在多个范围内导出每个参数的内部组件，内部参考电压，DAC，存储器，模拟比较器和模拟数字转换器。内部组件与内部参考电压，模数转换器，比较器和存储器连接在一起，用于将数据信号写入存储器，指示内部组件的校准校正因子。内部组件与存储器和DAC连接在一起，因此DAC响应于存储的表示校正校正因子的数据信号，以使内部组件提供给器件的参数的值根据参数的校准校正。

3. 发明授权

US4841170A Temperature controlled hybrid assembly 失效
标题翻译：温控混合组合
公开(公告)号：US4841170A
公开(公告)日：1989-06-20
申请号：US939522
申请日：1986-12-08
申请人： Larry E. Eccleston
发明人： Larry E. Eccleston
IPC分类号： G05D23/24 , H01L23/34 , H01L25/00 , H05K1/02 , H05K1/03 , H05K1/14 , H05K1/16
CPC分类号： H01L23/345 , G05D23/1919 , G05D23/24 , H01L23/34 , H05K1/0212 , H01L2924/0002 , H05K1/0306 , H05K1/144 , H05K1/167 , H05K2201/043 , H05K2201/10151 , H05K2203/1115 , H05K2203/1581 , H05K2203/165
摘要： A hybrid circuit structure includes an electrical circuit and a heating circuit therefor, both mounted on a single substrate. Valuable substrate space is saved by mounting the electrical circuit components on one surface of the substrate and the heating circuit elements on the opposite surface. A temperature control circuit is included, preferably mounted on the same surface as the electrical circuit components. Precision resistors for gain control and other functions may be provided on a separate substrate which may be mounted directly to the single substrate or to a separator therebetween. The precision resistors are in thermal contact with the temperature controlled heating circuit, thereby further increasing the stability of the circuit.
摘要翻译：混合电路结构包括安装在单个基板上的电路及其加热电路。通过将电路元件安装在基板的一个表面和相对表面上的加热电路元件来节省宝贵的基板空间。包括温度控制电路，优选地安装在与电路部件相同的表面上。用于增益控制和其他功能的精密电阻器可以设置在可以直接安装到单个基板或其间的隔板的单独基板上。精密电阻与温度控制加热电路热接触，从而进一步提高电路的稳定性。

4. 再颁专利

USRE34179E Temperature controlled hybrid assembly 失效
公开(公告)号：USRE34179E
公开(公告)日：1993-02-16
申请号：US538932
申请日：1990-06-15
申请人： Larry E. Eccleston
发明人： Larry E. Eccleston
IPC分类号： G05D23/24 , H01L25/16 , H05K1/02 , H05K1/03 , H05K1/14 , H05K1/16
CPC分类号： H01L25/167 , G05D23/1919 , G05D23/24 , H05K1/0212 , H01L2924/0002 , H05K1/0306 , H05K1/144 , H05K1/167 , H05K2201/043 , H05K2201/10151 , H05K2203/1115 , H05K2203/1581 , H05K2203/165
摘要： A hybrid circuit structure includes an electrical circuit and a heating circuit therefor, both mounted on a single substrate. Valuable substrate space is saved by mounting the electrical circuit components on one surface of the substrate and the heating circuit elements on the opposite surface. A temperature control circuit is included, preferably mounted on the same surface as the electrical circuit components. Precision resistors for gain control and other functions may be provided on a separate substrate which may be mounted directly to the single substrate or to a separator therebetween. The precision resistors are in thermal contact with the temperature controlled heating circuit, thereby further increasing the stability of the circuit.

5. 发明授权

US4859936A Method of and apparatus for determining AC calibration errors and apparatus using device with AC calibration errors 失效
标题翻译：用于确定AC校准误差的方法和装置以及使用具有AC校准误差的装置的装置
公开(公告)号：US4859936A
公开(公告)日：1989-08-22
申请号：US51318
申请日：1987-05-19
申请人： Larry E. Eccleston
发明人： Larry E. Eccleston
IPC分类号： G01R19/00 , G01R15/12 , G01R35/00 , H03G1/04
CPC分类号： G01R15/125 , G01R35/005 , H03G1/04
摘要： Calibrating errors of a variable gain amplifier used in an AC calibrator or a meter for measuring AC is determined for a gamut of frequencies. The gain of the variable gain amplifier is varied by adjusting the value of a variable resistor in discrete steps. A variable amplitude signal is applied to the amplifier while the resistor is adjusted in discrete steps so the amplifier derives a gamut of variable amplitude signals that are supposed to have predetermined values. The amplitudes of the gamut of variable amplitude signals derived by the amplifier are detected and compared with the values that the signals are supposed to have to derive a calibrating error signal of the amplifier for each variable resistor value. A gamut of variable frequency, constant amplitude signals is applied to the amplifier while the amplifier gain is constant. The amplifier has a tendency to derive an AC output signal having a different amplitude in response to different ones of the frequencies. The amplitude of the amplifier output for each frequency in the gamut of frequencies applied to the amplifier is detected and compared with the output signal of the amplifier while each frequency in the gamut of frequencies is applied to the amplifier with the amplitude of the amplifier output for one frequency in the gamut to derive an amplitude versus frequency response indication of the amplifier. The amplitude versus frequency response indication is modified by the derived calibrating error signal. The calibrated amplifier is used in a voltmeter or AC calibrator to that the amplifier output is modified as a function of input frequency and gain setting.
摘要翻译：在AC校准器中使用的可变增益放大器的校准误差或用于测量AC的仪表用于频域范围。可变增益放大器的增益通过以离散步长调节可变电阻的值来改变。将可变幅度信号施加到放大器，同时以离散步长调整电阻器，使得放大器得出假定具有预定值的可变幅度信号的色域。检测由放大器导出的可变幅度信号的色域的幅度，并将其与每个可变电阻器值必须导出放大器校准误差信号的值进行比较。当放大器增益恒定时，可变频率恒定幅度信号的范围被施加到放大器。放大器具有响应于不同频率导出具有不同幅度的AC输出信号的趋势。检测施加到放大器的频率范围内的每个频率的放大器输出的幅度，并将其与放大器的输出信号进行比较，同时将频域范围内的每个频率施加到具有放大器输出的幅度的放大器在色域中的一个频率来导出放大器的幅度对频率响应指示。幅度对频率响应指示由导出的校准误差信号修改。校准的放大器用于电压表或交流校准器中，以将放大器输出修改为输入频率和增益设置的函数。

6. 发明授权

US4716398A Linearity control circuit for digital to analog converter 失效
标题翻译：用于数模转换器的线性控制电路
公开(公告)号：US4716398A
公开(公告)日：1987-12-29
申请号：US19427
申请日：1987-02-26
申请人： Larry E. Eccleston , John C. Emery
发明人： Larry E. Eccleston , John C. Emery
IPC分类号： H03M1/82 , H03K9/08 , H03K17/16 , H03M1/66
CPC分类号： H03K9/08 , H03K17/165
摘要： In a circuit utilizing a digital to analog converter, an amplifier receives two voltage levels of a digitally modulated input signal via two different switching circuits. Linearity of output signals provided by the amplifier is significantly improved by a circuit for effectively matching the resistances provided by the two switching circuits to the amplifier. A feedback circuit from the output of the amplifier, including a feedback amplifier, is used to withdraw from a switching device any current passing therethrough when ON, thus eliminating any effect of resistance of the switching device from the amplifier.
摘要翻译：在利用数模转换器的电路中，放大器通过两个不同的开关电路接收经数字调制的输入信号的两个电压电平。通过用于将由两个开关电路提供的电阻有效地匹配到放大器的电路，由放大器提供的输出信号的线性度显着提高。包括反馈放大器在内的放大器的输出的反馈电路用于从开关装置退出ON时的任何电流通过，从而消除了开关器件与放大器的电阻的任何影响。

7. 发明授权

US4585987A Regulated voltage supply with sense current cancellation circuit 失效
标题翻译：具有检测电流消除电路的稳压电源
公开(公告)号：US4585987A
公开(公告)日：1986-04-29
申请号：US522834
申请日：1983-08-12
申请人： Walter W. Prue, Jr. , Larry E. Eccleston
发明人： Walter W. Prue, Jr. , Larry E. Eccleston
IPC分类号： G05F1/10 , G05F1/565 , G05F1/62
CPC分类号： G05F1/565 , Y10S323/909
摘要： A regulated voltage supply (10) for delivering a substantially constant voltage to a load (12) having a regulator (24) for controlling a raw voltage supply (22) to deliver that constant potential, wherein the supply includes sense leads (28 and 30) between the load and the regulator for monitoring load voltage, provided with a sense current cancellation circuit (30) for nulling sense current and preventing it from flowing through the sense leads; in a preferred implementation, including voltage-to-current converters (42 and 44) bridging respectively the output terminals (14 and 16) and the sense terminals (32 and 34), it provides a cancellation current equal in magnitude and opposite in direction to the sense current.
摘要翻译：一种调节电压源（10），用于向具有用于控制原始电压源（22）的调节器（24）的负载（12）提供基本上恒定的电压以传递该恒定电位，其中，所述电源包括感测引线（28和30 ），用于监视负载电压，设置有感测电流消除电路（30），用于使感测电流为零并防止其流过感测引线; 在优选的实施方案中，包括分别桥接输出端子（14和16）和感测端子（32和34）的电压 - 电流转换器（42和44），它提供了大小相等的抵消电流，感应电流。

8. 发明授权

US5446371A Precision analog-to-digital converter with low-resolution and high-resolution conversion paths 失效
标题翻译：具有低分辨率和高分辨率转换路径的精密模数转换器
公开(公告)号：US5446371A
公开(公告)日：1995-08-29
申请号：US241835
申请日：1994-05-12
申请人： Larry E. Eccleston , David E. Bezold
发明人： Larry E. Eccleston , David E. Bezold
IPC分类号： G01R19/25 , H03M1/14 , H03M1/82 , G01R17/06
CPC分类号： H03M1/145 , G01R19/25 , H03M1/822
摘要： An analog-to-digital converter utilizes low-resolution and high-resolution conversion paths for precision voltage measurements. A first conversion made using a comparatively low resolution ADC is used to predict the reference voltage to one input of a null detector that receives the input voltage on another input, and effectively magnifies the voltage difference between its inputs. In a preferred embodiment, the duty cycle of a pulse-width modulator is adjusted to precisely adjust the reference voltage to provide a nulled (or near null) reading from the null detector. A low resolution ADC then converts the voltage from the null detector, which when added to the reference voltage, yields a final reading with 18-bit to 22-bit accuracy. The preferred embodiment is implemented to read the output from a pressure transducer and employs a binary search technique to rapidly adjust the duty cycle of the pulse-width modulator. The system utilizes a single ADC which is multiplexed between the low-resolution, high-speed reading and high-resolution, low-speed reading of the fully settled output of the null detector.
摘要翻译：模数转换器利用低分辨率和高分辨率的转换路径进行精密电压测量。使用比较低分辨率ADC进行的第一次转换用于将参考电压预测为接收另一个输入上的输入电压的零检测器的一个输入，并有效地放大其输入之间的电压差。在优选实施例中，调整脉冲宽度调制器的占空比以精确地调整参考电压以从零检测器提供零（或接近零）的读数。然后，低分辨率ADC转换来自零检测器的电压，当加到参考电压时，它将产生具有18位至22位精度的最终读数。优选实施例被实现为读取压力传感器的输出，并采用二分搜索技术来快速调整脉宽调制器的占空比。该系统使用单个ADC，它在低分辨率，高速读取和高分辨率，低速读取零位检测器的完全稳定输出之间进行复用。

9. 发明授权

US4933631A Digital AC meter 失效
标题翻译：数字式交流电表
公开(公告)号：US4933631A
公开(公告)日：1990-06-12
申请号：US349681
申请日：1989-05-10
申请人： Larry E. Eccleston
发明人： Larry E. Eccleston
IPC分类号： G01R15/12 , G01R35/00 , H03G1/04
CPC分类号： G01R15/125 , G01R35/005 , H03G1/04
摘要： Calibrating errors of a variable gain amplifier used in an AC calibrator or a meter for measuring AC are determined for a gamut of frequencies. The gain of the variable gain amplifier is varied by adjusting the value of a variable resistor in discrete steps. A variable amplitude signal is applied to the amplifier while the resistor is adjusted in discrete steps so the amplifier derives a gamut of variable amplitude signals that are supposed to have predetermined values. The amplitudes of the gamut of variable amplitude signals derived by the amplifier are detected and compared with the values that the signals are supposed to have to derive a calibrating error signal of the amplifier for each variable resistor value. A gamut of variable frequency, constant amplitude signals is applied to the amplifier while the amplifier gain is constant. The amplifier has a tendency to derive an AC output signal having a different amplitude in response to different ones of the frequencies. The amplitude of the amplifier output for each frequency in the gamut of frequencies applied to the amplifier is detected and compared with the output signal of the amplifier while each frequency in the gamut of frequencies is applied to the amplifier with the amplitude of the amplifier output for one frequency in the gamut to derive an amplitude versus frequency response indication of the amplifier. The amplitude versus frequency response indication is modified by the derived calibrating error signal. The calibrated amplifier is used in a voltmeter or AC calibration so that the amplifier output is modified as a function of input frequency and gain setting.
摘要翻译：在AC校准器中使用的可变增益放大器的校准误差或用于测量AC的仪表用于频域范围。可变增益放大器的增益通过以离散步长调节可变电阻的值来改变。将可变幅度信号施加到放大器，同时以离散步长调整电阻器，使得放大器得出假定具有预定值的可变幅度信号的色域。检测由放大器导出的可变幅度信号的色域的幅度，并将其与每个可变电阻器值必须导出放大器校准误差信号的值进行比较。当放大器增益恒定时，可变频率恒定幅度信号的范围被施加到放大器。放大器具有响应于不同频率导出具有不同幅度的AC输出信号的趋势。检测施加到放大器的频率范围内的每个频率的放大器输出的幅度，并将其与放大器的输出信号进行比较，同时将频域范围内的每个频率施加到具有放大器输出的幅度的放大器在色域中的一个频率来导出放大器的幅度对频率响应指示。幅度对频率响应指示由导出的校准误差信号修改。校准放大器用于电压表或AC校准，以便根据输入频率和增益设置修改放大器输出。

10. 发明授权

US4841229A Method of and circuit for ohmmeter calibration 失效
标题翻译：欧姆表校准方法和电路
公开(公告)号：US4841229A
公开(公告)日：1989-06-20
申请号：US127704
申请日：1987-12-02
申请人： Larry E. Eccleston
发明人： Larry E. Eccleston
IPC分类号： G01R27/08 , G01R35/00
CPC分类号： G01R35/005
摘要： The calibrator of an ohmmeter is compensated to eliminate any error as a result of the resistance of leads interconnecting terminals of the ohmmeter and a reference resistance to which the ohmmeter is connected during calibration. In accordance with one aspect of the invention, ohmmeter current flowing through a buffer amplifier biased by a floating power supply bypasses the ohmmeter leads. In accordance with another aspect, a current equal in magnitude but opposite in direction to the ohmmeter current is applied to the leads.
摘要翻译：对欧姆计的校准器进行补偿，以消除由于欧姆表的引线互连端子的电阻和校准期间欧姆表连接的参考电阻而导致的任何误差。根据本发明的一个方面，流经由浮动电源偏置的缓冲放大器的欧姆表电流绕过欧姆表引线。根据另一方面，在电流值方向上与欧姆表电流方向相反的电流被施加到引线。

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