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APPARATUS AND METHOD FOR OPERATING A PORTABLE XENON ARC SEARCHLIGHT

  • US 20030137834A1
  • Filed: 11/15/1999
  • Published: 07/24/2003
  • Est. Priority Date: 11/15/1999
  • Status: Active Grant
First Claim
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1. An apparatus for producing a high intensity beam of light with high efficiency of conversion of electrical power into light intensity comprising:

  • a xenon or metal halide arc lamp;

    a high frequency/high efficiency electronic ballasting circuit coupled to said arc lamp operating at a frequency substantially greater than 20 kHz;

    a battery coupled to said ballasting circuit for powering said ballasting circuit and said arc lamp, said battery having a voltage greater than 12 volts; and

    a converter circuit coupled to both said battery, said ballasting circuit and said arc lamp for converting DC voltage from said battery to pulse width modulated switched current to said arc lamp in which said DC voltage is switched by parallel switching transistors.

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