Three-way compact fluorescent lamp system utilizing an electronic ballast having a variable frequency oscillator
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United States of America Patent
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May 3, 1994
Grant Date -
N/A
app pub date -
May 20, 1992
filing date -
May 20, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A compact low-pressure gas discharge lamp assembly includes a base and a plurality of low-pressure gas discharge light generating elements mounted to the base. Each of the light generating elements is capable of being individually energized. A ballast circuit is provided which is capable of supplying electrical energy to a variable number of the low pressure gas discharge lighting elements. A three-way switch has an input connected with the ballast circuit and two outputs. Each output is connected with a different light generating element. The switch connects one of the outputs with the ballast circuit in a first switch position and another one of the outputs with the ballast circuit in a second switch position. Both of the outputs are connected with the ballast circuit in a third switch position. The ballast circuit includes an oscillator that oscillates at a frequency that varies as a function of the number of light generating elements connected by the switch to the ballast circuit.
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