Radiant energy – Photocells; circuits and apparatus – Signal isolator
Patent
1997-05-08
1999-07-20
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Signal isolator
340501, 340593, H01H 3500, H01H 3700, G12B 2900
Patent
active
059258888
ABSTRACT:
An electrical system is provided which includes multiple electrical loads which are powered by an AC voltage source. A synchronization circuit generates a synchronization signal which is representative of the half-cycle of the AC voltage source. A load circuit includes multiple AC line-voltage switching devices and the multiple electrical loads. Each AC line-voltage switching device controls the application of power from the AC voltage source to a respective one of the electrical loads. An input circuit senses the multiple AC line-voltage switching devices and generates a single output signal which is representative of the states of the multiple AC line-voltage switching devices. A processing circuit determines the states of the multiple AC line-voltage switching devices based upon the synchronization signal and the single output signal.
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Lee John R.
Paragon Electric Company, Inc.
Westin Edward P.
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