Inverter transformer and inverter circuit

Details Inverter transformer and inverter circuit Inverter transformer and inverter circuit

2005-11-22

2005-11-22

Mai, Anh (Department: 2832)

Inductor devices

Coil or coil turn supports or spacers

Coil on a preformed support or mount

C336S198000, C336S192000

Reexamination Certificate

active

06967558

ABSTRACT:
A system for safeguarding the circuit and the step-up transformer can be devised without using the special high-cost components. Voltage supplied by the primary coil (21) of a step-up transformer (2) is switched by a transistor (TR) and the secondary coil (22) of the step-up transformer causes the generation of secondary voltage. To detect the voltage generated by the secondary coil of the step-up transformer, a voltage detection coil wrapped around the step-up transformer (2) is provided. Abnormalities in the voltage supplied to a cold cathode tube (1) are detected based on voltage detected by this voltage detection coil (23). Switching by the transistor (TR) is stopped when an abnormality is detected.

REFERENCES:
patent: 4229786 (1980-10-01), Mitani et al.
patent: 4335423 (1982-06-01), Koizumi et al.
patent: 5225971 (1993-07-01), Spreen
patent: 5315280 (1994-05-01), Stokes et al.
patent: 5359313 (1994-10-01), Watanabe et al.
patent: 5642268 (1997-06-01), Pratt et al.
patent: 5729774 (1998-03-01), Constable
patent: 6151225 (2000-11-01), Ho et al.
patent: 6256179 (2001-07-01), Yamada et al.
patent: 09-035885 (1997-02-01), None
patent: 2001-028831 (2001-01-01), None
Patent Abstracts of Japan JP 2001-028831.
Patent Abstract of Japan JP 09-035885.

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