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1. 发明授权

US4270102A Integrated circuit FM local oscillator with AFC control and temperature compensation 失效
标题翻译：集成电路FM本地振荡器，具有AFC控制和温度补偿功能
公开(公告)号：US4270102A
公开(公告)日：1981-05-26
申请号：US33358
申请日：1979-04-26
申请人： Glenn B. Gawler , Robert J. McFadyen
发明人： Glenn B. Gawler , Robert J. McFadyen
IPC分类号： H03B5/12 , H03L1/02
CPC分类号： H03L1/02 , H03B5/1209 , H03B5/1231 , H03B5/1243 , H03B5/1284
摘要： A FM local oscillator circuit suitable for integrated circuit fabrication, the frequency of which responds to a first current component for reducing frequency drift of a tuned frequency as a function of temperature and to a second current component for providing automatic frequency control of said tuned frequency. The circuit comprises a cross coupled differential pair of transistors, adapted to be coupled to a tuned circuit manually tunable over a given frequency range, which exhibit a negative conductance substantially controlled by said first current component for sustaining oscillations over said given frequency range and which further exhibit a variable capacitance controlled by said second current component for providing electronic fine tuning of the oscillator circuit. The emitters of the differential transistor pair are joined and coupled to first and second current sources, the first of which is temperature compensated for generating said first current component and the second of which is selectively controlled by an AFC control signal for generating said second current component.
摘要翻译：一种适用于集成电路制造的FM本地振荡器电路，其频率响应于第一电流分量，用于降低作为温度的函数的调谐频率的频率漂移以及用于提供所述调谐频率的自动频率控制的第二电流分量。电路包括交叉耦合的差分对晶体管，适于耦合到在给定频率范围上可手动调谐的调谐电路，该调谐电路显示出基本上由所述第一电流分量控制的负电导，用于维持所述给定频率范围上的振荡，呈现由所述第二电流分量控制的可变电容，用于提供振荡器电路的电子微调。差分晶体管对的发射极被连接并耦合到第一和第二电流源，第一和第二电流源被温度补偿以产生所述第一电流分量，其中第二电流分量由AFC控制信号选择地控制，以产生所述第二电流分量。

2. 发明授权

US4378531A Negative resistance oscillator suited for partial integration 失效
标题翻译：负电阻振荡器适用于部分集成
公开(公告)号：US4378531A
公开(公告)日：1983-03-29
申请号：US242368
申请日：1981-03-10
申请人： Glenn B. Gawler
发明人： Glenn B. Gawler
IPC分类号： H03B7/06 , H03H11/52
CPC分类号： H03B7/06 , H03H11/52
摘要： A novel negative resistance oscillator is disclosed for partial integration. The oscillator has a tank circuit and a load, which are non-integrated, and active circuitry, which is integrated. The active circuit consists of a current "source" and two current "sinks", arranged to provide a negative resistance. The oscillator, which is designed to drive an erase head in a tape recorder, as a part of a tape recorder integrated circuit, requires only a single additional pin, has a controlled peak current range, a large dc voltage swing for a given dc supply potential, and an efficient dc to ac current conversion ratio.
摘要翻译：公开了一种用于部分集成的新颖的负电阻振荡器。该振荡器具有集成的非积分和有源电路的储能电路和负载。有源电路由电流“源”和两个电流“吸收器”组成，以提供负电阻。设计用于驱动磁带录音机中的擦除头的振荡器作为磁带录像机集成电路的一部分，仅需要一个额外的引脚，具有受控的峰值电流范围，给定直流电源的大直流电压摆幅电位和有效的直流到交流电流转换比。

3. 发明授权

US4323840A Switching mode regulator 失效
标题翻译：开关模式调节器
公开(公告)号：US4323840A
公开(公告)日：1982-04-06
申请号：US194052
申请日：1980-10-06
申请人： Glenn B. Gawler
发明人： Glenn B. Gawler
IPC分类号： H02M3/155 , G05F1/56
CPC分类号： H02M3/155
摘要： A switching mode regulator of improved efficiency and reliability is described in which both the turn-on and turn-off transients are controlled. In switching mode regulators, a flyback diode turns off when the transistor switch turns on, but if stored charge keeps the diode on after the transistor switch has come on, very large currents which stress the transistor and represent loss, may result. When the transistor switch turns off, the energy storing inductance required in such supplies to maintain current to the load, causes the voltage across the switch to increase more rapidly than the current is extinguished, thus tending to exceed the ratings of the transistor switch for reverse secondary breakdown. Improved transient performance is achieved by the provision of a novel current transformer which aids in storing energy from the turn-on transient, and which next couples a portion of the stored energy to a capacitor from which the energy is returned to the load in a manner which reduces the rate of change of voltage (dv/dt) applied to the switch at turn-off and precludes reverse secondary breakdown. The whole process is energy conservative. In addition, since switching transistors of lower ratings may be employed, improved performance, reliability, and economy are achieved.
摘要翻译：描述了改进的效率和可靠性的开关模式调节器，其中开启和关断瞬变都被控制。在开关模式调节器中，当晶体管开关导通时，反激式二极管截止，但是如果在晶体管开关导通之后存储电荷保持二极管导通，则可能导致施加晶体管并表示损耗的非常大的电流。当晶体管开关关断时，这种电源所需的能量存储电感用于维持负载电流，使得开关两端的电压比电流消失更快地增加，因此倾向于超过晶体管开关反向的额定值二次故障。通过提供一种新颖的电流互感器来实现改进的瞬态性能，该电流互感器有助于存储来自导通瞬态的能量，并且其接下来将存储的能量的一部分耦合到电容器，电容器以这种方式从能量返回到负载这降低了在关断时施加到开关的电压变化率（dv / dt），并且排除了反向二次击穿。整个过程是节能的。此外，由于可以采用具有较低额定值的开关晶体管，因此实现了改进的性能，可靠性和经济性。

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