Invention Grant
- Patent Title: Inrush current protection
- Patent Title (中): 浪涌电流保护
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Application No.: US12753850Application Date: 2010-04-02
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Publication No.: US08384292B2Publication Date: 2013-02-26
- Inventor: Afroz M. Imam , Sivakumar Thangavelu
- Applicant: Afroz M. Imam , Sivakumar Thangavelu
- Applicant Address: US MA Danvers
- Assignee: Osram Sylvania Inc.
- Current Assignee: Osram Sylvania Inc.
- Current Assignee Address: US MA Danvers
- Agent Shaun P. Montana
- Main IPC: H05B37/00
- IPC: H05B37/00 ; H02H1/00

Abstract:
Methods of protecting an electrical device, such as a ballast, from damage due to an inrush current, and devices incorporating such methods, are disclosed. A loss of input power received by the ballast is detected. In response, the ballast is entered into a standby mode. The ballast is able to remain in the standby mode for a standby period of time. The input power is monitored during the standby period of time to measure a start time. Measurement of the start time is triggered by the ballast receiving input power again. The ballast is entered into an active mode when the measured start time exceeds a protection time. The protection time corresponds to an amount of time needed for an inrush current to dissipate following input power again being received by the ballast, protecting the ballast from possible damage due to the inrush current.
Public/Granted literature
- US20110241550A1 Inrush Current Protection Public/Granted day:2011-10-06
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