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    • 1. 发明授权
    • Lighting unit
    • 照明单元
    • US4350930A
    • 1982-09-21
    • US156229
    • 1980-06-04
    • William PeilRobert J. McFadyen
    • William PeilRobert J. McFadyen
    • C07C57/055H05B35/00H05B41/38H01J7/44H01J17/34H01J19/78H01J29/96
    • H05B41/46H05B35/00H05B41/388Y02B20/204Y10S315/05Y10S315/07
    • A lighting unit is described utilizing an energy efficient metal vapor arc lamp as the main source of light supplemented by a standby filamentary light source producing light when the arc lamp is being started, the filament thereof serving as a resistive ballast for the arc lamp under normal operation. The lighting unit is designed as a more efficient replacement for the incandescent lamp. The lighting unit includes a rectifier for conversion of 60 hertz ac to dc, and a dc energized operating network, including a ferrite transformer and a transistor switch. The operating network produces an output adapted to each operating state of the arc lamp, including the provision of a high ignition potential, a power boost for the lamp during the glow to arc transition, warm-up and ballasting provisions, and means for sustaining the arc during transients which reduce the line voltage. The filamentary light source provides useful standby illumination while the arc lamp is being started, the amount being reduced to a low value as the arc lamp approaches normal light output.
    • 使用能量有效的金属蒸汽弧灯作为主要光源的照明单元被描述,该辅助光源在待弧光灯起动时产生光的备用丝光源,其灯丝在正常情况下用作电弧灯的电阻镇流器 操作。 照明单元被设计为更有效地替代白炽灯。 照明单元包括用于将60赫兹交流转换成直流的整流器,以及包括铁氧体变压器和晶体管开关的直流通电操作网络。 操作网络产生适合于弧光灯的每个操作状态的输出,包括提供高点燃电位,在发光到电弧转换期间灯的功率提升,预热和压载设置,以及用于维持 在瞬变期间电弧会降低线路电压。 当弧光灯正在启动时,灯丝光源提供有用的待机照明,当弧光灯接近正常的光输出时,该量被减小到较低的值。
    • 2. 发明授权
    • Ultrasonic intrusion alarm system
    • 超声波入侵报警系统
    • US4290126A
    • 1981-09-15
    • US93100
    • 1979-11-09
    • Robert J. McFadyenJohn F. Zeigler, III
    • Robert J. McFadyenJohn F. Zeigler, III
    • G08B13/16
    • G08B13/1636
    • An ultrasonic intrusion alarm system of the pulse-echo type transmits pulsed signals which are reflected by a reference surface. The resulting reference received pulsed signals appear as corresponding signals at the output of the system's receiver, which is gated on in coincidence with the arrival of said reference signals and is gated off at essentially all other times for minimum power consumption, the output signal state of said receiver being employed to cause the generation of an alarm signal upon the occurrence of an intrusion. The receiver includes an AGC amplifier network which exhibits a threshold voltage level that is a function of the signal strength of said reference signals which level is compared with the amplified received signals whereby said alarm is generated when said threshold level fails to be exceeded, such as due to an interruption of said signals.
    • 脉冲回波型超声波入侵报警系统发射被参考面反射的脉冲信号。 所得到的参考接收脉冲信号在系统接收机的输出处显示为相应的信号,该信号与所述参考信号的到达一致地选通,并且在基本上所有其他时间被关闭以进行最小功耗,输出信号状态 所述接收机用于在发生入侵时产生报警信号。 接收机包括AGC放大器网络,该AGC放大器网络呈现作为所述参考信号的信号强度的函数的阈值电压电平,该电平与放大的接收信号进行比较,从而当不能超过所述阈值电平时产生所述警报,例如 由于所述信号的中断。
    • 3. 发明授权
    • Electronic apparatus comprising an audio amplifier providing shunt
voltage regulation
    • 电子设备包括提供分流电压调节的音频放大器
    • US4050029A
    • 1977-09-20
    • US702287
    • 1976-07-02
    • Robert J. McFadyen
    • Robert J. McFadyen
    • H03F1/30H03F3/20H03F3/213H03F3/30H03F3/04
    • H03F3/3088H03F3/213
    • Electronic apparatus is disclosed suitable for integrated circuit fabrication and comprising shunt voltage regulation. The electronic apparatus may be a radio receiver which uses an unregulated current source for its supply voltage. The power amplifier of the audio amplifier has a pair of conventional large area push-pull output transistors which are connected in shunt with the supply. In accordance with the invention, shunt voltage regulation of the supply voltage is achieved by sensing a change in the supply voltage using a zener diode for a voltage reference and then altering the idling current in the output transistors in response to changes in current flow through the zener diode. In consequence of increases in idling current, the output stages shift from class B toward class A operation and shunt regulate the supply voltage. The zener diode is arranged to provide both stabilization of the full supply voltage and the centering voltage of the push-pull output amplifier.
    • 公开的电子设备适用于集成电路制造并且包括并联电压调节。 电子设备可以是使用未调节的电流源作为其电源电压的无线电接收器。 音频放大器的功率放大器具有一对与电源分流连接的常规大面积推挽输出晶体管。 根据本发明,电源电压的并联电压调节是通过使用用于电压参考的齐纳二极管来检测电源电压的变化而实现的,然后响应于通过电流参考电流的电流变化而改变输出晶体管中的空载电流 齐纳二极管。 由于怠速电流的增加,输出级从B类移向A类工作​​,并且分流调节电源电压。 齐纳二极管被布置成提供全电源电压和推挽输出放大器的定心电压的稳定性。
    • 5. 发明授权
    • AM-FM receiver having improved bias supply circuit
    • AM-FM接收机具有改进的偏置电源电路
    • US3936750A
    • 1976-02-03
    • US542623
    • 1975-01-20
    • William PeilRobert J. McFadyen
    • William PeilRobert J. McFadyen
    • H03D5/00H03G3/30H04B1/06
    • H03D5/00H03G3/3052
    • The present invention relates to an AM-FM receiver of the superheterodyne variety having a novel bias supply circuit wherein a common filter capacitor may be used for the bias supply, the AGC function in AM operation, and the AFC function in FM operation. The B+ bias is supplied through a controllable current source which adjusts the bias in accordance with the detector output. In the FM mode setting, automatic frequency control of the local oscillator is provided by bias adjustment. In the AM mode setting, automatic gain control of the IF amplifier and of the AM section of the tuner is provided by bias adjustment. The invention has preferred application to integrated circuit fabrication.
    • 本发明涉及一种具有新型偏置电源电路的超外差种类的AM-FM接收机,其中公共滤波电容器可用于偏置电源,AM操作中的AGC功能和FM操作中的AFC功能。 B +偏压通过可控电流源提供,可根据检测器输出调节偏置。 在FM模式设置中,通过偏置调整提供本地振荡器的自动频率控制。 在AM模式设置中,通过偏置调整提供了IF放大器和调谐器的AM部分的自动增益控制。 本发明优选应用于集成电路制造。
    • 6. 发明授权
    • Transformer for use in a static inverter
    • 变压器用于静态逆变器
    • US4259716A
    • 1981-03-31
    • US028405
    • 1979-04-09
    • James E. HarrisRobert J. McFadyenWilliam PeilNicholas A. Schmitz
    • James E. HarrisRobert J. McFadyenWilliam PeilNicholas A. Schmitz
    • H01F19/04H01F21/08H01F29/14H01F38/02H02M1/40H02M3/338H01F31/00H02M1/08
    • H01F21/08H01F19/04H01F29/14H01F38/02H02M1/40H02M3/338H01F2029/143
    • A novel transformer is described for use in a static inverter in association with one or two switching semiconductor devices. The transformer produces an output for control of the associated switching device(s) which changes in sense from conduction aiding to conduction inhibiting as a function of the flux level in the transformer core. The invention is applicable to single loop cores, such as are assembled from two "U" cores. Control is effected by a primary and secondary control winding wound through an aperture pair, the aperture pair being oriented for "neutrality" of the second control winding to the main flux. The aperture pair creates a five branch magnetic path which permits optimizing the control voltage applied to the associated semiconductor devices both to enhance the switching efficiency when the switching device is initially turned on and to reduce stresses on the switching device by precluding transformer saturation when the switching device is turned off. With two switching devices, two aperture pairs are normally provided.
    • 描述了一种与一个或两个开关半导体器件相关联的用于静态逆变器的新型变压器。 变压器产生用于控制相关开关器件的输出,其从感应传导到传导抑制的变化,其作为变压器铁芯中的通量水平的函数。 本发明可应用于单环芯,例如由两个“U”芯组装。 控制通过缠绕在孔径对上的初级和次级控制绕组来实现,该孔径对被定向成使第二控制绕组的“中性”到主通量。 孔径对产生五个分支磁路,其允许优化施加到相关联的半导体器件的控制电压,以在开关器件初始接通时提高开关效率,并且通过在开关器件的切换时通过排除变压器饱和来减小开关器件上的应力 设备已关闭。 使用两个开关装置,通常提供两个开口对。
    • 7. 发明授权
    • Static inverter employing an assymetrically energized inductor
    • 静态逆变器采用等效电感电感
    • US4202031A
    • 1980-05-06
    • US956578
    • 1978-11-01
    • Joseph P. HeslerSamuel M. KorzekwaRobert J. McFadyen
    • Joseph P. HeslerSamuel M. KorzekwaRobert J. McFadyen
    • H02M7/537H02M7/48
    • H02M7/537
    • A static inverter employing an inductor and an electrical gain element for intermittent assymetric energization of the inductor from a dc source is described. Reliable intermittent operation of the gain element, typically a power transistor, is achieved by use of three feedback windings which in response to saturation of a branch of the core of the inductor but before full core saturation, discontinue regenerative feedback and then apply degenerative feedback. This turn off mechanism protects the transistor from high current stresses. Passive means are provided such as a capacitor for momentarily storing the energy or diode means for coupling the energy back to the source or to the load to protect the transistor from the high voltage surge and the energy release when current flow in the inductor is interrupted. Energy stored in the capacitor may be used for transistor commutation.
    • 描述了采用电感器和电增益元件的静态逆变器,用于从直流电源间歇性地对电感器通电。 通过使用三个反馈绕组来实现增益元件(通常为功率晶体管)的可靠的间歇操作,所述三个反馈绕组响应于电感器的芯的分支的饱和而在全核饱和之前,中断再生反馈,然后施加退化反馈。 该关断机制保护晶体管免受高电流应力。 提供无源装置,例如用于瞬时存储能量或二极管装置的电容器,用于将能量耦合回源或负载,以在电感器中的电流中断时保护晶体管免受高压浪涌和能量释放。 存储在电容器中的能量可用于晶体管换向。
    • 8. 发明授权
    • AM-FM receiver having improved mode conversion
    • AM-FM接收机具有改进的模式转换
    • US4050022A
    • 1977-09-20
    • US731281
    • 1976-10-12
    • Robert J. McFadyenWilliam Peil
    • Robert J. McFadyenWilliam Peil
    • H03F3/191H03D5/00H03G3/14H03G3/30H04B1/16H04B1/06
    • H03G3/14H03D5/00H03G3/30H03G3/3052H04B1/16
    • The present invention relates to an AM-FM receiver suitable for integrated circuit fabrication and having improved mode conversion means. The AM-FM receiver had a d.c. coupled IF broadband IF amplifier comprising a plurality of stages of emitter coupled transistor pairs. A d.c. feedback network is provided to balance the individual stages and to generate a control potential for further use in mode conversion. In the FM mode, the IF amplifier operates with a high, stable gain at the FM IF frequency with gain reduction for noise suppression purposes below the FM IF frequency. Frequency dependent noise suppression is provided by a capacitance associated with the degenerative network. In the AM mode, the IF amplifier operates at a controllable, medium gain with the degenerative effect on IF gain restored at the AM IF frequency by the addition of capacity to the degenerative network. A control bus, energized by the degenerative network, is used for gain control purposes in the AM tuner and for mode conversion in the AM tuner, the AM-FM detector, and separate portions of the AM and FM audio circuitry.
    • 本发明涉及适用于集成电路制造并具有改进的模式转换装置的AM-FM接收机。 AM-FM接收机具有直流 耦合的IF宽带IF放大器包括多级发射极耦合晶体管对。 一个d.c. 反馈网络被提供以平衡各个阶段并产生用于在模式转换中进一步使用的控制电位。 在FM模式中,IF放大器在FM IF频率下以高稳定的增益运行,降低噪声抑制的优点,低于FM IF频率。 频率相关噪声抑制由与退化网络相关联的电容提供。 在AM模式下,IF放大器以可控的中等增益工作,通过向退化网络增加容量,在AM IF频率上恢复IF增益的退化效应。 由退化网络激励的控制总线用于AM调谐器中的增益控制目的,AM调谐器,AM-FM检测器以及AM和FM音频电路的单独部分中的模式转换。
    • 9. 发明授权
    • Cascode FM tuner for a radio receiver
    • 用于无线电接收机的Cascode FM调谐器
    • US4034298A
    • 1977-07-05
    • US623372
    • 1975-10-17
    • Robert J. McFadyenWilliam Peil
    • Robert J. McFadyenWilliam Peil
    • H03D5/00H03J7/04H04B1/16
    • H03D5/00H03J7/04
    • An FM tuner having an improved automatic frequency control circuit and designed for use in an AM-FM receiver is described. The tuner employs a mixer transistor and an oscillator transistor connected in circuit so that they form a single series path across the bias source. This feature permits one to control conduction in both transistors by control of one and thus simplifies both biasing and mode conversion. Preferably, the transistor bias source and the source of AFC control potential are consolidated to save decoupling components. When the base of the mixer transistor is connected to the source through a low d.c. impedance, the AFC potential is transferred (less the mixer junction drop) to the collector of the oscillator transistor, where it provides sensitive automatic frequency control action. The circuit design uses a minimum of components.
    • 描述了具有改进的自动频率控制电路并被设计用于AM-FM接收机的FM调谐器。 调谐器采用混合晶体管和连接在电路中的振荡晶体管,以便它们跨越偏置源形成单个串联路径。 该特征允许通过控制一个来控制两个晶体管的导通,从而简化偏置和模式转换两者。 优选地,晶体管偏置源和AFC控制电位的源被整合以保存去耦组件。 当混频器晶体管的基极通过低直流电源连接到源极时。 阻抗,AFC电位被传输(更少的混频器结降)到振荡晶体管的集电极,在那里它提供敏感的自动频率控制动作。 电路设计使用最少的组件。