公开(公告)号：DE10200827A1

公开(公告)日：2003-07-24

申请号：DE10200827

申请日：2002-01-11

Applicant: PHILIPS INTELLECTUAL PROPERTY

Inventor： BROECK HEINZ VAN DER ,  WENDT MATTHIAS ,  STEINBUSCH HANS

IPC: H04N5/66 ,  G09G3/20 ,  G09G3/296 ,  G09G3/28 ,  G09F9/313 ,  H02M7/53 ,  H02M1/08

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.

公开(公告)号：WO03092149A2

公开(公告)日：2003-11-06

申请号：PCT/IB0301442

申请日：2003-04-17

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  WENDT MATTHIAS ,  STEINBUSCH HANS ,  DIEFENBACH GERHARD ,  REICHINGER CHRISTIAN

Inventor： WENDT MATTHIAS ,  STEINBUSCH HANS ,  DIEFENBACH GERHARD ,  REICHINGER CHRISTIAN

IPC: H01L41/04 ,  H02N2/00 ,  H02N2/06

CPC classification number: H02N2/142

Abstract: The invention relates to a starting-process controller for starting a piezomotor (4), having a voltage-controlled oscillator (1)(VCO), a power output stage (2), and a resonant converter (3), wherein the oscillator (VCO) generates the control signals required for the power output stage (2), and the resonance converter (3) converts the stepped output voltage from the power output stage (2) into a sinusoidal voltage at the output of the resonance converter (3), with which voltage the resonance converter (3) drives the piezomotor (4). The motor current that flows when the piezomotor (4) is driven is measured and compared with the phase of the drive voltage in a phase comparator (6). The output signal from the phase comparator (6) then is a measure for the phase difference at the time between current and voltage. A phase-locked loop filter (8) smoothes the phase-difference signal, which in turn controls the oscillator (1)(VCO). This starting-process controller (11) comprises a start-assisting circuit element (10) that fixes the output voltage from the phase-locked loop filter (8) at start-up and thus applies a constant voltage to the input of the voltage-controlled oscillator (1)(VCO).

Abstract translation: 本发明涉及一种用于启动具有压控振荡器（VCO），功率输出级（2）和谐振变换器（3）的压电机（4）的启动过程控制器，其中振荡器 VCO）产生功率输出级（2）所需的控制信号，并且谐振转换器（3）将来自功率输出级（2）的阶梯式输出电压转换成谐振转换器（3）的输出端的正弦电压， 谐振转换器（3）驱动压电电动机（4）的电压。 在驱动压电电动机（4）时流动的电动机电流被测量并与相位比较器（6）中的驱动电压的相位进行比较。 然后，来自相位比较器（6）的输出信号是电流和电压之间的相位差的度量。 锁相环滤波器（8）对相位差信号进行平滑，相位差信号又控制振荡器（1）（VCO）。 该启动处理控制器（11）包括起动辅助电路元件（10），其在启动时固定来自锁相环路滤波器（8）的输出电压，并且因此向电压 - 受控振荡器（1）（VCO）。