Two-wire ballast for fluorescent tube dimming
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Feb 8, 1983
Grant Date -
N/A
app pub date -
Mar 2, 1981
filing date -
Apr 21, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A two-wire ballast arrangement is disclosed for fluorescent tubes having first and second terminals for supplying variable power to dim the fluorescent tube, a choke coil connected between the first terminal and the fluorescent tube and a filament transformer having a primary connected between the second terminal and a tap on the choke coil, the tap being selected to supply substantially constant voltage to the primary winding, the transformer having secondary windings to supply filament voltage to the fluorescent tube.
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Cited Art Landscape
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