Apparatus for detecting luminous tube and power supply faults wh

Details Apparatus for detecting luminous tube and power supply faults wh Apparatus for detecting luminous tube and power supply faults wh

1996-09-06

1998-09-08

Leja, Ronald W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361111, H02H 900

Patent

active

058053999

ABSTRACT:
Apparatus for detecting series arcs and output load faults in high frequency luminous tube power supplies and ballasts including wideband ringing and detector circuits for collecting the intense high frequency, pre-plasma noise energy associated with the initial avalanche phase of high frequency arc formation and a transient suppressor for delaying the triggering of power supply shut-down for up to the duration of the arc avalanche phase. Plural detectors for increased sensitivity and reliability over a variety of arc locations may be employed. Dual purpose detector input probes serve as over-voltage corona generators.

REFERENCES:
patent: 5185687 (1993-02-01), Beihoff et al.

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