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US4128742A Rugged crosspoints for communication systems 失效
通信系统的坚固交叉点

Rugged crosspoints for communication systems
摘要:
A bilateral solid-state crosspoint for use in a telecommunications switching network is disclosed comprising a pair of Darlington connected pairs of transistors connected in a complementary relationship. The transmission path in each direction through the crosspoint comprises a Darlington connected pair of transistors and one additional semiconductor junction. A control circuit provides base drive to the transistors to close the crosspoint.
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