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发明名称
摘要
PURPOSE:In switching of AC signals of a large amplitude, the driving circuit is insulated from the earth and is driven surely by the voltage corresponding to the potential of a channel, thereby switching plural channels econmically.
申请公布号
JPS5551377(B2)
申请公布日期
1980.12.24
申请号
JP19760079504
申请日期
1976.07.06
申请人
发明人
分类号
H04M3/02;H04Q3/52
主分类号
H04M3/02
代理机构
代理人
主权项
地址
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