Invention Application
- Patent Title: LIGHTING CONTROL FAILSAFE CIRCUIT
- Patent Title (中): 照明控制故障电路
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Application No.: PCT/US2011037559Application Date: 2011-05-23
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Publication No.: WO2011149838A3Publication Date: 2012-04-05
- Inventor: LEINEN RICHARD A
- Applicant: LEVITON MANUFACTURING CO , LEINEN RICHARD A
- Assignee: LEVITON MANUFACTURING CO,LEINEN RICHARD A
- Current Assignee: LEVITON MANUFACTURING CO,LEINEN RICHARD A
- Priority: US78630610 2010-05-24
- Main IPC: H01H19/03
- IPC: H01H19/03 ; H05B37/02 ; H05B41/04
Abstract:
A system may include a switch arranged to control a lighting load, a processor arranged to control the switch, and a failsafe circuit arranged to monitor the processor and actuate the switch if the processor fails. The failsafe circuit may have a time constant, and may be arranged to actuate the switch if the monitor signal does not include a pulse during a period of time equal to the time constant.
Information query
