Patent
Solid state relay using photo-coupled isolators
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TLDR
In this paper, a photo transistor coupled pair and a photo silicon controlled rectifier coupled pair connected in series circuit for response to the input control gate and by means of an output transistor responsive to the series circuit, for providing a current path from the high voltage source through one output terminal, the collector-emitter path of the output transistor and to a load via the other output terminal.Abstract:
A solid state relay coupled to provide current flow to a load from a high voltage source provides high isolation between the relay''s output terminals and an input control gate by means of a photo transistor coupled pair and a photo silicon controlled rectifier coupled pair connected in series circuit for response to the input control gate and by means of an output transistor responsive to the series circuit for providing a current path from the high voltage source through one output terminal, the collector-emitter path of the output transistor and to a load via the other output terminal.read more
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