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21. 发明授权

US4345217A Cascode current source 失效
标题翻译： Cascode电流源
公开(公告)号：US4345217A
公开(公告)日：1982-08-17
申请号：US175548
申请日：1980-08-05
申请人： W. David Pace
发明人： W. David Pace
IPC分类号： G05F3/26 , H03F3/34 , H03F3/343 , H03F3/347 , H03F3/04
CPC分类号： G05F3/265 , H03F3/343
摘要： A cascode circuit arrangement comprising an input current mirror circuit for providing an output current substantially equal to a supplied input current and an output circuit coupled in cascode to the output of the input current mirror and the output of the circuit. The output circuit comprises a pair of NPN transistors connected in a Darlington amplifier configuration which is supplied a constant bias potential as the input of the amplifier. The Darlington amplifier is coupled in cascode between the output of the current mirror and the output of the current source to buffer the same from variations in the output voltage supplied at the output. The output circuit includes a PNP lateral transistor the emitter of which is coupled between the interconnected emitter and base of said pair of transistors, the base is coupled to the bias potential and the collector to the output of the current mirror such that the reverse base current of the cascoded one of said pair of transistors is returned to the output of the current mirror to eliminate reverse base current error when the BV.sub.CEO of the cascoded transistor is exceeded.
摘要翻译：一种共源共栅电路装置，包括用于提供基本上等于所提供的输入电流的输出电流的输入电流镜电路和以共源共栅耦合到输入电流镜的输出和电路的输出的输出电路。输出电路包括以一个达林顿放大器配置连接的一对NPN晶体管，其被提供恒定的偏置电位作为放大器的输入端。达林顿放大器在电流镜的输出和电流源的输出之间以共源共耦合耦合，以从输出端提供的输出电压的变化中缓冲。输出电路包括PNP横向晶体管，其发射极耦合在所述一对晶体管的互连发射极和基极之间，所述基极耦合到偏置电位并且集电极耦合到电流镜的输出，使得反向基极电流所述一对晶体管中的所述一对串联的晶体管返回到电流镜的输出，以在超过级联晶体管的BVCEO时消除反向基极电流误差。

22. 发明授权

US3932879A Bilaterally conducting zener diode and circuit therefor 失效
标题翻译：双向传导齐纳二极管及其电路
公开(公告)号：US3932879A
公开(公告)日：1976-01-13
申请号：US489191
申请日：1974-07-17
申请人： Wilson David Pace
发明人： Wilson David Pace
IPC分类号： H01L27/00 , H01L27/07 , H01L29/00 , H02J7/16 , H01L29/90 , H01L29/06 , H01L29/747 , H02H7/06
CPC分类号： H02J7/166 , H01L27/00 , H01L27/0783 , H01L29/00
摘要： A bilateral zener diode is described having improved terminal characteristics including a low noise factor, a predictable breakdown voltage level in the reverse breakdown mode within plus or minus 3 percent, and providing a sharp reference voltage which is substantially independent of diode current. This bilateral conducting diode is achieved by utilizing a collector ring diffusion of the same conductivity type as the anode diffusion, but spaced from both the anode diffusion and the cathode diffusion. In the forward bias conduction mode, the flow of current from the anode to the cathode is collected by the collector ring and returned to the cathode providing a forward transfer efficiency which is typically 90 percent.
摘要翻译：描述了双边齐纳二极管，其具有改进的端子特性，包括低噪声因子，反向击穿模式中的可预测的击穿电压电平在正或负3％内，并且提供基本上与二极管电流无关的尖锐参考电压。该双侧导电二极管通过利用与阳极扩散相同导电类型的集电极环扩散而与阳极扩散和阴极扩散隔开来实现。在正向偏压传导模式中，从集电环收集从阳极到阴极的电流流动并返回到阴极，提供正向转移效率，其通常为90％。

23. 发明申请

US20060076319A1 Arc welding apparatus 审中-公开
标题翻译：电弧焊机
公开(公告)号：US20060076319A1
公开(公告)日：2006-04-13
申请号：US10961550
申请日：2004-10-07
申请人： David Pace , Rodney Bitsoi , Arthur Watkins
发明人： David Pace , Rodney Bitsoi , Arthur Watkins
IPC分类号： B23K9/167
CPC分类号： B23K9/296
摘要： An arc welding apparatus is disclosed, and which includes a torch body which is coupled with a source of electrical power; an electrode having a proximal end which is borne by the torch body and which is electrically coupled with the source of electrical power, and an opposite distal end; and a gas cup which matingly cooperates with the torch body and which is selectively moveable relative to the distal end of the electrode.
摘要翻译：公开了一种电弧焊接装置，其包括与电源连接的割炬本体; 电极，其具有由所述炬体承载并且与所述电力源电耦合的近端和相对的远端; 以及与所述炬体配合地配合并且相对于所述电极的远端可选择性地移动的气杯。

24. 发明授权

US06285569B1 Switched mode power supply controller circuit and method thereof 有权
标题翻译：开关电源控制器电路及其方法
公开(公告)号：US06285569B1
公开(公告)日：2001-09-04
申请号：US09507652
申请日：2000-02-22
申请人： Jefferson W. Hall , W. David Pace , Christopher Gass
发明人： Jefferson W. Hall , W. David Pace , Christopher Gass
IPC分类号： H02M3335
CPC分类号： H02M3/33507 , H02M2001/0006 , Y10S323/901
摘要： A switching power supply (96) receives an AC voltage and converts it to a regulated DC voltage. The switching power supply (96) includes a Vcc limiter (16) to limit the operating voltage at the power supply terminal (10) of a integrated regulator circuit (118). The Vcc limiter (16) limits the operating voltage at the power supply terminal (10). When operating voltage at power supply terminal (10) increases, a differential pair of transistors (22, 24) supply a differential current to a current mirror configuration of transistors (26, 30) to supply voltage to a drive transistor (36) to increase current in the drive transistor (36) to a value based on n times the current in a reference transistor (26). An increase in current through the drive transistor (36) counteracts increased operating voltage at the power supply terminal (10), thereby reducing the operating voltage level back to a desired level.
摘要翻译：开关电源（96）接收AC电压并将其转换成稳压的DC电压。开关电源（96）包括用于限制集成调节器电路（118）的电源端子（10）处的工作电压的Vcc限制器（16）。 Vcc限制器（16）限制电源端子（10）处的工作电压。当供电端子（10）上的工作电压增加时，差分对晶体管（22,24）将差分电流提供给晶体管（26,30）的电流镜面配置，以向驱动晶体管（36）提供电压以增加驱动晶体管（36）中的电流为基于参考晶体管（26）中的电流的n倍的值。通过驱动晶体管（36）的电流的增加抵消了电源端子（10）处的增加的工作电压，从而将工作电压电平降低到期望的水平。

25. 发明授权

US4720856A Control circuit having a direct current control loop for controlling the gain of an attenuator 失效
标题翻译：具有用于控制衰减器的增益的直流控制回路的控制电路
公开(公告)号：US4720856A
公开(公告)日：1988-01-19
申请号：US902723
申请日：1986-09-02
申请人： W. David Pace , Dennis L. Welty
发明人： W. David Pace , Dennis L. Welty
IPC分类号： H04M9/10 , H04M1/02
CPC分类号： H04M9/10
摘要： A DC control loop is disclosed which is used in conjunction with a control circuit to precisely set the maximum control voltage produced by the control circuit for maximizing the gain of an attenuator controlled thereby. The attenuator includes a current mirror having an output for sourcing a DC current the magnitude of which is proportional to the gain of the attenuator and the control circuit includes a capacitor that is charged or discharged accordingly to vary the magnitude of the control voltage. The DC control loop includes a circuit for sinking the current supplied from the current mirror and a current of a predetermined magnitude, the circuit being coupled to the output of the current mirror and a transistor which is turned on when the magnitude of the current from the current mirror equals the magnitude of the current sank by the circuit to inhibit further charge or discharge of the capacitor whereby the gain of the attenuator is held at a predetermined maximum value.
摘要翻译：公开了一种直流控制回路，其与控制电路结合使用以精确地设置由控制电路产生的最大控制电压，以使由此控制的衰减器的增益最大化。衰减器包括具有用于提供DC电流的输出的电流镜，该DC电流的大小与衰减器的增益成比例，并且控制电路包括相应地对其进行充电或放电以改变控制电压的大小的电容器。 DC控制回路包括用于吸收从电流反射镜提供的电流和预定大小的电流的电路，该电路耦合到电流镜的输出端和晶体管，当晶体管的电流值从电流镜等于电路沉没的电流的大小，以阻止电容的进一步充电或放电，从而衰减器的增益保持在预定的最大值。

26. 发明授权

US4431874A Balanced current multiplier circuit for a subscriber loop interface circuit 失效
标题翻译：用于用户环路接口电路的平衡电流倍增电路
公开(公告)号：US4431874A
公开(公告)日：1984-02-14
申请号：US305013
申请日：1981-09-24
申请人： Don W. Zobel , W. Eric Main , W. David Pace , Dennis L. Welty
发明人： Don W. Zobel , W. Eric Main , W. David Pace , Dennis L. Welty
IPC分类号： H04B1/58 , H04B3/03 , H04M19/00
CPC分类号： H04M19/005 , H04B1/586
摘要： A balanced multiplier circuit for a subscriber loop interface circuit (SLIC) which provides both loop current to a two-wire bidirectional subscriber loop and suppression of longitudinal signals generated at the two-wire loop input to the SLIC while maintaining the midpoint load voltage at half the available power supply voltage applied to the SLIC.
摘要翻译：用于用户环路接口电路（SLIC）的平衡乘法器电路，其向两线双向用户环路提供两个回路电流，并且抑制在到SLIC的两线环路输入处产生的纵向信号，同时将中点负载电压保持在一半可用的电源电压施加到SLIC。

27. 发明授权

US4406929A Hook status detector for a subscriber loop interface circuit 失效
标题翻译：用户环路接口电路的Hook状态检测器
公开(公告)号：US4406929A
公开(公告)日：1983-09-27
申请号：US238508
申请日：1981-02-26
申请人： W. David Pace , W. Eric Main
发明人： W. David Pace , W. Eric Main
IPC分类号： H04M19/00 , H04Q3/00 , H04B1/58
CPC分类号： H04M19/005 , H04Q3/00
摘要： A circuit for use with a subscriber loop interface circuit (SLIC) to detect the hook/switch status of the telephone handset driven by the SLIC. Responsive to metallic current flowing through the handset when the telephone is taken off hook, a voltage is derived which exceeds a threshold level as well as a current is produced which is proportional to the value of the metallic current. Whenever the produced current level is less than a predetermined value in conjunction with the threshold level being exceeded, a comparator threshold circuit is rendered operative to produce a signal indicative of the hook status being in a closed switch state. With the hook being in an open switch state, the voltage is caused to be less than the threshold level wherein the comparator threshold circuit is maintained in an non-operative state.
摘要翻译：用于与用户环路接口电路（SLIC）一起使用以检测由SLIC驱动的电话听筒的挂机/开关状态的电路。响应于当电话摘机时流经手机的金属电流，导致超过阈值电压的电压以及产生与金属电流值成比例的电流。每当产生的电流电平低于超过阈值电平的预定值时，比较器阈值电路就可操作地产生指示挂机状态处于闭合开关状态的信号。在钩子处于开启状态时，使得电压小于阈值电平，其中比较器阈值电路保持在非操作状态。

28. 发明授权

US4250452A Pressure sensitive transducer circuits 失效
标题翻译：压敏传感器电路
公开(公告)号：US4250452A
公开(公告)日：1981-02-10
申请号：US31884
申请日：1979-04-19
申请人： Randall C. Gray , W. David Pace
发明人： Randall C. Gray , W. David Pace
IPC分类号： G01R27/26 , G01D5/24 , G01L9/12 , H03K3/26 , G01N27/00
CPC分类号： G01L9/12 , Y10T307/779
摘要： This relates to a circuit for delivering a linear voltage (V.sub.P) which is inversely proportional to the capacitance of a pressure sensitive capacitive transducer. A constant current I.sub.O is alternately switched into a reference capacitor (C.sub.R) and the transducer capacitor (C.sub.P). When the voltage across C.sub.P reaches V.sub.P, a flip-flop is toggled to direct current to C.sub.R. When the voltage across C.sub.R reaches a reference voltage (V.sub.R), the flip-flop is again toggled directing current to C.sub.P. A duty cycle detector charges integrator capacitors until the feedback voltage V.sub.P is such as to render equal the charging times of C.sub.P and C.sub.R.
摘要翻译：这涉及用于传送与压敏电容换能器的电容成反比的线性电压（VP）的电路。恒定电流IO交替切换为参考电容（CR）和换能器电容（CP）。当CP上的电压达到VP时，触发器被切换以将电流引导到CR。当CR上的电压达到参考电压（VR）时，触发器再次被切换，将电流引导到CP。占空比检测器对积分电容器进行充电，直到反馈电压VP等于CP和CR的充电时间。

29. 发明授权

US4121273A Cruise control method and apparatus 失效
标题翻译：巡航控制方法及装置
公开(公告)号：US4121273A
公开(公告)日：1978-10-17
申请号：US759516
申请日：1977-01-14
申请人： Robert Benjamin Jarrett , Wilson David Pace , Howard Fredrick Weber
发明人： Robert Benjamin Jarrett , Wilson David Pace , Howard Fredrick Weber
IPC分类号： B60K31/04 , B60K31/00
CPC分类号： B60K31/045
摘要： A cruise control system having means to provide a signal corresponding to a desired speed for use by a servo control to regulate the speed. This system uses a current source to ramp charge a first capacitor. A comparator compares magnitude of the voltage on the first capacitor against the signal representative of the desired speed. A first counter is used to accumulate counts from a first frequency generator. A latch counter capable of following the counts in the first counter is used to store the counts when the comparator indicates the voltage on the first capacitor is substantially equal to the magnitude of the signal representative of the speed. A digital comparator then compares the counts stored in the latch counter against counts being accumulated anew in the first counter while the first capacitor is being recharged. Means are provided to inhibit the first capacitor from being charged further after the digital comparator indicates equality between the quantity of the counts being compared. Means to transfer the voltage on the first capacitor to a second capacitor are used so that the voltage on the second capacitor can be compared against the signal representative of the actual speed which then provides an output to the servo control to regulate the speed.
摘要翻译：巡航控制系统具有提供对应于期望速度的信号的装置，以供伺服控制器使用以调节速度。该系统使用电流源来对第一电容器进行斜坡充电。比较器比较第一电容器上的电压与表示期望速度的信号的幅度。第一计数器用于累积来自第一频率发生器的计数。当比较器指示第一电容器上的电压基本上等于表示速度的信号的幅度时，能够跟随第一计数器中的计数的锁存计数器用于存储计数。数字比较器然后将存储在锁存计数器中的计数与在第一电容器被再充电时在第一计数器中重新累加的计数进行比较。在数字比较器指示正在比较的计数量之间相等的情况下，提供了用于抑制第一电容器被进一步充电的装置。使用将第一电容器上的电压转移到第二电容器的装置，使得可以将第二电容器上的电压与代表实际速度的信号进行比较，然后将该输出提供给伺服控制器以调节速度。

30. 发明授权

US4042834A Frequency doubler circuit 失效
标题翻译：倍频电路
公开(公告)号：US4042834A
公开(公告)日：1977-08-16
申请号：US707809
申请日：1976-07-22
申请人： W. David Pace
发明人： W. David Pace
IPC分类号： B60T8/172 , G01P3/48 , G01P3/60 , H03K5/00 , H03B19/14
CPC分类号： G01P3/60 , B60T8/172 , G01P3/4805 , H03K5/00006
摘要： The frequency doubler includes circuits for charging and discharging a capacitor at a predetermined rate in response to each incoming cycle. First and second comparators are connected between the capacitor and the input of an OR gate. These comparators limit the magnitudes of the charged voltage and the discharged voltage of the capacitor. The OR gate responds to both comparators being off during a part of the rising portion of the capacitor waveform and during a part of the falling portion of the capacitor waveform by providing pulses having twice the repetition rate as the input pulses. An output circuit may be connected to the output terminal of the OR gate for converting the output signal of the OR gate into a further output signal comprised of current pulses having constant amplitude and duration.
摘要翻译：倍频器包括响应于每个进入周期以预定速率对电容器进行充电和放电的电路。第一和第二比较器连接在电容器和OR门的输入端之间。这些比较器限制了充电电压的大小和电容器的放电电压。 OR门响应两个比较器在电容器波形的上升部分的一部分期间以及在电容器波形的下降部分的一部分期间被关断，通过提供具有两倍于重复频率的脉冲作为输入脉冲。输出电路可以连接到OR门的输出端，用于将或门的输出信号转换为由具有恒定幅度和持续时间的电流脉冲组成的另外的输出信号。

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