Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Transformer in the supply circuit
Reexamination Certificate
2007-05-29
2007-05-29
Vo, Tuyet (Department: 2821)
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Transformer in the supply circuit
C315S291000, C363S021130
Reexamination Certificate
active
11258908
ABSTRACT:
Discharge lamps are respectively aligned and arranged, and a first alternating voltage output from an inverter circuit is supplied to one electrode of each discharge lamp, whilst a second alternating voltage output from the inverter circuit is supplied to the other electrode of the same. A signal processor compares a first voltage signal with a second voltage signal, and generates a current-limit signal when a difference in amplitude between these signals is not smaller than a predetermined value. The current-limit signal is supplied to the inverter circuit to help reduce the chance on an accidental electric shock.
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Imai Katsunori
Maeda Hiroshi
Toyoda Terumasa
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
TDK Corporation
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