Method of controlling a circuit arrangement for the ac power...

Details Method of controlling a circuit arrangement for the ac power... Method of controlling a circuit arrangement for the ac power...

2006-06-20

2006-06-20

Vo, Tuyet Thi (Department: 2821)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S063000, C345S076000, C345S077000

Reexamination Certificate

active

07064732

ABSTRACT:
A method of controlling a circuit arrangement for an AC voltage supply of a plasma display panel, the circuit arrangement comprising at least a transistor bridge constituted by the bridge transistors (T1, T2, T3, T4), an input voltage (U0), a capacitor (Cp) of the plasma cell and a charging circuit comprising an auxiliary voltage (Uh), a first auxiliary transistor (T11) and a first coil (L1) and at the beginning of the charging operation the first auxiliary transistor (T11) is turned on, characterized in that once the first auxiliary transistor (T11) has been turned on, the second bridge transistor (T2) of the half bridge continues to be turned on for a delay time tv and is turned off after the delay time tv has elapsed.

REFERENCES:
patent: 6897834 (2005-05-01), McCormack
patent: 2002/0030642 (2002-03-01), Huang et al.
patent: 2002/0033806 (2002-03-01), Vossen et al.
patent: 2002/0047577 (2002-04-01), Roh et al.
patent: 2002/0121862 (2002-09-01), Schoenbauer et al.

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