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45 条记录 (耗时 0.011 秒)

    Self-oscillating power supply
    1.
    发明授权
    Self-oscillating power supply 失效
    自振电源

    公开(公告)号：US4471327A

    公开(公告)日：1984-09-11

    申请号：US379850

    申请日：1982-05-20

    申请人： Timothy B. Moss

    发明人： Timothy B. Moss

    IPC分类号： H03K3/014 ,  H03K3/28 ,  H03K4/62

    CPC分类号： H03K4/62 ,  H03K3/014 ,  H03K3/28

    摘要： A self-oscillating circuit particularly adapted for driving the deflection yoke of a cathode ray tube (CRT) or a high voltage pulse transformer is disclosed. The circuit includes an NPN transistor, to the collector of which is coupled a direct voltage source and a first inductance and to the base of which is coupled a second, grounded inductance. Following transistor turn-on, the collector current ramps up in storing energy in the first inductance. With the transistor base drive removed, a voltage spike appears on the transistor's collector to which is coupled a grounded capacitor. The LC network comprised of the first inductance and the grounded capacitance attempts to resonate, with the collector voltage clamped by the transistor collector-base junction. The energy stored in the first inductance flows via the grounded voltage source and the collector-base junction of the forward biased transistor into the second inductance until the energy stored in the first inductance has been reduced to the point where the transistor's collector-base junction is no longer forward biased. Continued current flow through the second inductance to the transistor's base turns the transistor on, causing current to be reversed in the first inductance in repeating the cycle as energy is again stored therein. Transistor base drive stops when the energy in the second inductance is depleted. The values of a resistance in series with the second inductance and the aforementioned capacitance determine the circuit's oscillatory period.

    摘要翻译： 公开了一种特别适用于驱动阴极射线管（CRT）或高压脉冲变压器的偏转线圈的自振荡电路。 电路包括NPN晶体管，其集电极耦合有直流电压源和第一电感，并且其基极与第二接地电感耦合。 在晶体管导通之后，集电极电流在存储第一电感中的能量时上升。 在去除了晶体管基极驱动器的情况下，晶体管集电极上出现电压尖峰，并将接地的电容器耦合到其上。 由第一电感和接地电容构成的LC网络试图谐振，由集电极电压钳位在晶体管集电极 - 基极结上。 存储在第一电感中的能量经由接地电压源和正向偏置晶体管的集电极 - 基极结到第二电感中，直到存储在第一电感中的能量已经减小到晶体管的集电极 - 基极结 不再向前偏见。 导通晶体管基极的持续电流通过第二电感使晶体管导通，当再次存储能量时，重复该周期，使第一电感中的电流反转。 当第二电感中的能量耗尽时，晶体管基极驱动停止。 与第二电感串联的电阻值和上述电容确定电路的振荡周期。

    A bistable counting circuit based on a transistor
    2.
    发明授权
    A bistable counting circuit based on a transistor 失效
    基于晶体管的双向计数电路

    公开(公告)号：US3708698A

    公开(公告)日：1973-01-02

    申请号：US3708698D

    申请日：1971-03-04

    申请人： INST ELEKTRODINAMIKI AKADEMII

    发明人： GRINEVICH F ,  TSYGANOK V

    IPC分类号： H03K3/28 ,  H03K17/725 ,  H03K3/29

    CPC分类号： H03K3/28 ,  H03K17/725

    摘要： A pulse technique formed by a device which includes a bistable circuit based on a single transistor which is opened when the circuit is in one state, and closed when it is in the other. In order to provide for the switching of the transistor from one stable state to the other by pulses of one polarity arriving from a common busbar, the present device includes a count input. The present circuit is non-critical to changes in the supply voltages and nominal ratings of the components within a wide range.

    摘要翻译： 一种由包括基于单个晶体管的双稳态电路的器件形成的脉冲技术，该单晶体管在电路处于一种状态时被打开，并且当处于另一状态时闭合。 为了提供通过从公共母线到达的一个极性的脉冲将晶体管从一个稳定状态切换到另一个的状态，本装置包括计数输入。 本电路对于在宽范围内的部件的电源电压和标称额定值的变化是非关键的。

    Liquid discharge apparatus and capacitive load driving circuit
    7.
    发明授权
    Liquid discharge apparatus and capacitive load driving circuit 有权
    液体放电装置和容性负载驱动电路

    公开(公告)号：US09346264B2

    公开(公告)日：2016-05-24

    申请号：US14205889

    申请日：2014-03-12

    申请人： SEIKO EPSON CORPORATION

    发明人： Shuji Otsuka ,  Tadashi Kiyuna ,  Toshifumi Asanuma

    IPC分类号： B41J2/07 ,  B41J2/045 ,  B41J29/38

    CPC分类号： H03K17/6871 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/04586 ,  B41J2/04588 ,  B41J2/0459 ,  B41J2/07 ,  B41J29/38 ,  H03K3/28

    摘要： A liquid discharge apparatus includes a discharge section, a charge supply source, first and second signal paths, a control signal generation section and a connection path selection section. The discharge section includes a nozzle configured and arranged to discharge a liquid, a pressure chamber in communication with the nozzle, and a piezoelectric element provided for the pressure chamber. A first voltage is applied by the charge supply source through the first signal path. A second voltage higher than the first voltage is applied by the charge supply source through the second signal path. The control signal generation section is configured to supply a control signal. The connection path selection section is configured to use the first or second signal path to electrically connect the piezoelectric element and the charge supply source in accordance with a voltage of the control signal and a holding voltage of the piezoelectric element.

    摘要翻译： 液体排出装置包括放电部，电荷源，第一和第二信号路径，控制信号生成部和连接路径选择部。 排出部包括配置并排列成液体的喷嘴，与喷嘴连通的压力室以及设置在压力室的压电元件。 电荷源通过第一信号路径施加第一电压。 高于第一电压的第二电压由电荷源通过第二信号路径施加。 控制信号生成部构成为提供控制信号。 连接路径选择部被配置为使用第一或第二信号路径来根据控制信号的电压和压电元件的保持电压来电连接压电元件和电荷源。