Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1997-01-16
1999-08-17
Hofsass, Jeffery A.
Communications: electrical
Condition responsive indicating system
Specific condition
324426, 320134, 320136, 250200, G08B 2100
Patent
active
059399902
ABSTRACT:
A circuit and a method of indicating the operation of a backup battery used in a communication device use a sensing circuit. The sensing circuit includes a diode connected in the forward direction between the communication device and the backup battery, for forming a current path from the communication device to the backup battery. A photocoupler connects in the forward direction between the backup battery and the communication device, for forming a current path from the backup battery to the communication device and sensing an output voltage from the backup battery. When the backup battery is operated, such a situation is sensed and the user is informed.
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Bushnell Esq. Robert E.
Hofsass Jeffery A.
Lieu Julie B.
Samsung Electronics Co,. Ltd.
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