Electricity: power supply or regulation systems – Remote sensing
Patent
1992-07-29
1995-04-04
Ray, Gopal C.
Electricity: power supply or regulation systems
Remote sensing
323902, 307140, 36494891, 364DIG2, G06F 126
Patent
active
054045452
ABSTRACT:
An improved interface isolation and selection circuit for a local area network. The invention includes a power supply effective to provide an isolated output voltage. An opto-isolator transforms a first control signal to a second control signal effective to activate the interface. The opto-isolator includes an optical emitter for providing an optical signal in response to the first control signal and an optical detector for receiving the optical signal and providing the second control signal in response thereto. The second control signal is effective to activate the interface by applying the isolated power thereto. In particular implementations, the isolated power and the power for the opto-isolator are provided by a single power supply and a field effect transistor is activated by the opto-isolator and, in turn, activates the interface.
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patent: 5285367 (1994-02-01), Keller
Hewlett--Packard Company
Ray Gopal C.
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