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    Voltage-controlled oscillator with digital preset
    1.
    发明授权
    Voltage-controlled oscillator with digital preset 失效
    带数字预置的电压控制振荡器

    公开(公告)号：US3614665A

    公开(公告)日：1971-10-19

    申请号：US3614665D

    申请日：1970-04-06

    Applicant: AVCO CORP

    Inventor： WELLER CARROLL E ,  MCNAIR ROBERT J

    IPC: H03B1/00 ,  H03B5/12 ,  H03B5/18 ,  H03L7/187

    CPC classification number: H03L7/187 ,  H03B5/1203 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/1805 ,  H03B2201/0208 ,  H03B2201/0266 ,  H03J2200/10

    Abstract: This is a voltage-controlled oscillator. The tank circuit of the oscillator comprises a plurality of capacitors, the capacitance magnitudes of which are related to each other in binary fashion. Also incorporated in this tank circuit is a voltage variable capacitor, to which a bias is applied for tuning purposes. By programmed switching one or more of the aforementioned capacitances are switched into the tank circuit, so as to bring the oscillator within the pull-in range of a phase lock loop. The elements of the oscillator are related to a coaxial line structure. The invention further provides a convenient mounting on which the tank circuit parameters are arranged. The various lumped capacitances in the tank circuit are switched in and out by PIN diodes.

    Bicycle with electric motor assist
    2.
    发明授权
    Bicycle with electric motor assist 失效
    带电动助力的自行车

    公开(公告)号：US3921741A

    公开(公告)日：1975-11-25

    申请号：US48752274

    申请日：1974-07-11

    Applicant: AVCO CORP

    Inventor： GARFINKLE IRWIN P ,  MCNAIR ROBERT J

    IPC: B62M6/45 ,  B62M6/65 ,  B60K1/04

    CPC classification number: B62M6/45 ,  B60L2200/12 ,  B60L2220/44 ,  B62M6/65

    Abstract: A pedal-operable bicycle is provided with supplemental electric power means to assist the operator in traversing hilly terrain. The electric power means comprises a storage battery, a wheel-hub mounted direct current motor operated either as a motor or a generator, and handle bar actuated electronic control means for applying power to energize the motor or to connect it as a generator to recharge the battery when traveling downgrade and/or to brake the vehicle to a slower speed. An alternate arrangement using a separate motor and generator is also disclosed.

    Abstract translation: 踏板可操作的自行车设置有辅助电力装置，以帮助操作者横穿丘陵地带。 电力装置包括蓄电池，作为电动机或发电机操作的轮毂安装的直流电动机以及用于施加电力给电动机供电或将其作为发电机连接的手柄杆电动控制装置 行驶时降低电池和/或使车辆制动速度较慢。 还公开了使用单独的电动机和发电机的替代布置。

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