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    • 62. 发明授权
    • Snubber circuit for GTO thyristor
    • GTO晶闸管缓冲电路
    • US4678932A
    • 1987-07-07
    • US857049
    • 1986-04-29
    • Minoru TanakaYuzuru Yonehata
    • Minoru TanakaYuzuru Yonehata
    • H03K17/16H01L29/74H02M7/515H03K17/0814H03K17/72H03K17/73
    • H03K17/08144
    • A snubber circuit for a GTO thyristor including a series-connected member of a capacitor and a diode connected in parallel with a GTO thyristor and a series-connected member of a resistor and a thyristor connected in parallel with the diode. The thyristor is adapted to be turned on when the GTO thyristor is turned on and the thyristor is adapted to be turned off at the same time as or immediately after a turn off of the GTO thyristor, whereby the circuit is enabled to perform the same protecting function as that of a snubber circuit for a GTO thyristor which includes no thyristor and, further, to block a discharging current from the capacitor due to the ripple voltages produced across the GTO thyristor after its turn off, by means of the thyristor which is then in an off state, so that no current may flow through the resistor.
    • 一种用于GTO晶闸管的缓冲电路,其包括电容器的串联连接构件和与GTO晶闸管并联连接的二极管以及与二极管并联连接的电阻器和晶闸管的串联连接构件。 当GTO晶闸管导通并且晶闸管在与GTO晶闸管关断之后的同时或紧随其后关闭的晶闸管时,晶闸管适合导通,由此该电路能够执行相同的保护 作为不包括晶闸管的GTO晶闸管的缓冲电路的功能,并且还由于由于在其关闭之后在GTO晶闸管上产生的纹波电压,阻塞来自电容器的放电电流,借助于较小的晶闸管 然后处于断开状态,使得没有电流可能流过电阻器。
    • 65. 发明授权
    • Distributorless ignition system with surge absorbing means and apparatus
therefor
    • 无浪涌点火系统,具有浪涌吸收装置及其设备
    • US4463744A
    • 1984-08-07
    • US241374
    • 1981-03-06
    • Minoru TanakaTakeshi IshizukaKenzo Shima
    • Minoru TanakaTakeshi IshizukaKenzo Shima
    • F02P3/04F02P3/055F02P3/08F02P7/03F02P15/00F02P15/08F02P1/00
    • F02P7/035F02P15/08
    • A distributorless ignition system in which a primary current alternately changing in its flowing direction is supplied to the primary winding of an ignition coil to induce a high secondary voltage alternately changing in polarity across the secondary winding of the ignition coil, and the induced voltage is sequentially distributed through a plurality of rectifiers such as diodes to a plurality of associated spark plugs thereby sequentially causing jumping of a spark across the spark gap of the spark plugs. An apparatus for mounting such a distributorless ignition system is also disclosed. In the invention, a surge voltage absorber is associated with each of the diodes, so that a surge voltage, which may be induced across the secondary winding of the ignition coil due to failure of normal sparking as when one or more of the spark plugs are removed or excessive wear occurs on the electrodes of one or more of the spark plugs, can be effectively absorbed without the possibility of damage to the diode or diodes and insulating members.
    • 一种无分配器点火系统,其中在其流动方向上交替变化的初级电流被提供给点火线圈的初级绕组,以引起次级绕组的二次绕组交替变化的次级电压,并且感应电压依次 通过诸如二极管的多个整流器分布到多个相关联的火花塞,从而顺序地引起火花在火花塞的火花隙之间的跳跃。 还公开了一种用于安装这种无分配器的点火系统的装置。 在本发明中,浪涌电压吸收器与每个二极管相关联,使得可能由于正常火花发生故障而在点火线圈的次级绕组上感应到浪涌电压,如当一个或多个火花塞为 可以有效地吸收一个或多个火花塞的电极上的去除或过度磨损,而不会损坏二极管或二极管和绝缘构件。