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1. 发明授权

US4041246A Thyristor cross-point switch with control 失效
标题翻译：晶闸管交叉点开关带控制
公开(公告)号：US4041246A
公开(公告)日：1977-08-09
申请号：US595497
申请日：1975-07-14
申请人： Takuzi Mukaemachi , Toshiaki Toyama , Taturu Miyoshi
发明人： Takuzi Mukaemachi , Toshiaki Toyama , Taturu Miyoshi
IPC分类号： H04M3/00 , H04Q3/52
CPC分类号： H04Q3/521
摘要： A transmission system comprising a network including cross-point switches arranged by four-layer semiconductor switching elements having self-holding function; an input connection circuit connected to the high potential side of a link of the network to supply the four-layer semiconductor switching elements with dc bias current for self-holding and including means to restrict the upper limit of the dc bias current and modulating means for superposing a signal to be transmitted on the dc bias current; a current control circuit connected to the low potential side of the link of the network and including a current switch circuit and an absorption type constant current circuit connected in parallel through a diode to the current switch circuit, both the circuits being so disposed as to permit the dc bias current from the high potential to the lower potential side of the link, and an output connection circuit, wherein, when the link of the network is to be closed, the current switch and the absorption type constant current circuit are activated thereby causing the four-layer semiconductor switching elements to be rendered conductive and then the current switch is rendered non-conductive, while the absorption type constant current circuit is rendered simultaneously to absorb the dc bias current.
摘要翻译：一种传输系统，包括：网络，包括由具有自保持功能的四层半导体开关元件布置的交叉点开关; 连接到网络的链路的高电位侧的输入连接电路，以向四层半导体开关元件提供具有用于自保持的直流偏置电流，并且包括用于限制直流偏置电流的上限的装置和用于叠加要在直流偏置电流上传输的信号; 连接到网络的链路的低电位侧的电流控制电路，并且包括通过二极管并联连接到电流开关电路的电流开关电路和吸收型恒流电路，两个电路被设置为允许从链路的高电位到低电位侧的直流偏置电流以及输出连接电路，其中当网络的链路闭合时，电流开关和吸收型恒流电路被激活，从而导致使四层半导体开关元件导通，然后使电流开关变为不导通，同时使吸收型恒流电路同时吸收直流偏置电流。

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