Secondary ground fault protected luminous tube transformer for mid-point connected luminous tubes
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United States of America Patent
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-
May 12, 1998
Grant Date -
N/A
app pub date -
Sep 19, 1996
filing date -
Sep 19, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A low cost power supply for neon lamps provides enhanced safety protection. The power supply has a transformer with a return path which is separate from the earth ground so that a fault current can be detected. The power supply has a mid-point connected secondary coil design which operates a mid-point connected neon lamp configuration. A protection circuit detects the fault current flowing between the output terminals and the earth ground. When the fault current is detected, the protection circuit disconnects the input power from the primary winding. An input power reset is required to restart the power supply once the protection circuit has operated.
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Cited Art Landscape
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