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Uninterruptible fluorescent lamp circuit available for emergency lighting

  • US 5,252,891 A
  • Filed: 05/06/1992
  • Issued: 10/12/1993
  • Est. Priority Date: 05/06/1992
  • Status: Expired due to Fees
First Claim
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1. An uninterruptible fluorescent lamp circuit available for emergency lighting comprising in sequencea power supply circuit and a battery connected in parallel to each other,a power-interruption-detection-and-switchover (PIDS) circuit,an oscillatory boosting circuit,a current-limiting circuit, anda fluorescent lamp;

  • said oscillatory boosting circuit transforming the input power to it into a high-frequency, high-voltage power which passes through said current-limiting circuit before being outputted to energize said fluorescent lamp.

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