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公开(公告)号：DE59909218D1
公开(公告)日：2004-05-27
申请号：DE59909218
申请日：1999-06-03
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： STEINBUSCH HANS
Abstract: The circuit has a measurement impedance, in which the voltage across the impedance is sampled by a sample and hold circuit driven by a ring counter. In this way the voltage is sampled during each period, at a time outside the time interval for changing the commutation switching elements. The circuit supplies an electric motor (1) with at least 3 windings (13-15) via a commutation circuit (3) with a commutation branch per motor winding connection. The winding connections can be connected to a first connection of the voltage source (2) or via a measurement impedance (4) to a second connection. A ring counter periodically changes over commutation switching elements according to a signal sequence circulating in the ring counter. A clock frequency generator generates a clock frequency dependent on the measurement voltage. The measurement impedance voltage is sampled by a sample-and-hold circuit driven by the ring counter to sample the voltage during each period at a time outside the time interval for changing the switching elements. An Independent claim is also included for an electrical drive.
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2.发明专利
公开(公告)号：AU2002348753A1
公开(公告)日：2003-07-24
申请号：AU2002348753
申请日：2002-12-23
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： BROECK HEINZ VAN DER , WENDT MATTHIAS , STEINBUSCH HANS
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 (T 1 , T 2 , T 3 , T 4 ), an input voltage (U 0 ), a capacitor (Cp) of the plasma cell and a charging circuit comprising an auxiliary voltage (Uh), a first auxiliary transistor (T 11 ) and a first coil (L 1 ) and at the beginning of the charging operation the first auxiliary transistor (T 11 ) is turned on, characterized in that once the first auxiliary transistor (T 11 ) has been turned on, the second bridge transistor (T 2 ) 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.
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公开(公告)号：DE60234129D1
公开(公告)日：2009-12-03
申请号：DE60234129
申请日：2002-12-23
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： VAN DER BROECK HEINZ , WENDT MATTHIAS , STEINBUSCH HANS
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 (T 1 , T 2 , T 3 , T 4 ), an input voltage (U 0 ), a capacitor (Cp) of the plasma cell and a charging circuit comprising an auxiliary voltage (Uh), a first auxiliary transistor (T 11 ) and a first coil (L 1 ) and at the beginning of the charging operation the first auxiliary transistor (T 11 ) is turned on, characterized in that once the first auxiliary transistor (T 11 ) has been turned on, the second bridge transistor (T 2 ) 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.
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公开(公告)号：DE60319363T2
公开(公告)日：2009-08-20
申请号：DE60319363
申请日：2003-04-17
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： WENDT MATTHIAS , STEINBUSCH HANS , DIEFENBACH GERHARD , REICHINGER CHRISTIAN
Abstract: A starting-process controller for starting a piezomotor, having a voltage-controlled oscillator, a power output stage, and a resonant converter. The oscillator generates the control signals required for the power output stage and the resonance converter converts the stepped output voltage from the power output stage into a sinusoidal voltage at the output. The resonance converter drives the piezomotor with the voltage. The motor current that flows when the piezomotor is driven is measured and compared with the phase of the drive voltage in a phase comparator. The comparison output signal is a measure of the phase difference at the time between current and voltage. A phase-locked loop filter smoothes the phase-difference signal for controling the oscillator. The controller includes a start-assisting circuit element that fixes the output voltage from the phase-locked loop filter at start-up and thus applies a constant voltage to the input of the voltage-controlled oscillator.
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公开(公告)号：DE10158584A1
公开(公告)日：2003-07-03
申请号：DE10158584
申请日：2001-11-29
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： DIEFENBACH GERHARD , REICHINGER CHRISTIAN , STEINBUSCH HANS , WENDT MATTHIAS
Abstract: The device has a drive circuit for supplying at least one piezoelectric resonator (10) with at least one stimulation a.c. voltage to stimulate mechanical vibrations and a unit for determining the effective power fed to the resonator from the stimulation voltage and the current through the resonator. The drive circuit specifies the stimulation voltage amplitude so the effective electrical power taken up does not decrease with increasing load Independent claims are also included for the following: an electric shaver for an inventive device and a control method for an inventive device.
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Patent Agency Ranking
公开(公告)号：AT446569T
公开(公告)日：2009-11-15
申请号：AT02781703
申请日：2002-12-23
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： VAN DER BROECK HEINZ , WENDT MATTHIAS , STEINBUSCH HANS
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 (T 1 , T 2 , T 3 , T 4 ), an input voltage (U 0 ), a capacitor (Cp) of the plasma cell and a charging circuit comprising an auxiliary voltage (Uh), a first auxiliary transistor (T 11 ) and a first coil (L 1 ) and at the beginning of the charging operation the first auxiliary transistor (T 11 ) is turned on, characterized in that once the first auxiliary transistor (T 11 ) has been turned on, the second bridge transistor (T 2 ) 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.
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公开(公告)号：DE60319363D1
公开(公告)日：2008-04-10
申请号：DE60319363
申请日：2003-04-17
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： WENDT MATTHIAS , STEINBUSCH HANS , DIEFENBACH GERHARD , REICHINGER CHRISTIAN
Abstract: A starting-process controller for starting a piezomotor, having a voltage-controlled oscillator, a power output stage, and a resonant converter. The oscillator generates the control signals required for the power output stage and the resonance converter converts the stepped output voltage from the power output stage into a sinusoidal voltage at the output. The resonance converter drives the piezomotor with the voltage. The motor current that flows when the piezomotor is driven is measured and compared with the phase of the drive voltage in a phase comparator. The comparison output signal is a measure of the phase difference at the time between current and voltage. A phase-locked loop filter smoothes the phase-difference signal for controling the oscillator. The controller includes a start-assisting circuit element that fixes the output voltage from the phase-locked loop filter at start-up and thus applies a constant voltage to the input of the voltage-controlled oscillator.
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公开(公告)号：DE69727464T2
公开(公告)日：2004-12-23
申请号：DE69727464
申请日：1997-07-01
Inventor： STEINBUSCH HANS
Abstract: An electromechanical device has a coil configuration comprising an insulating substrate (30) carrying a first group of 12 series-connected spiral conductor patterns (21a-21m) and a second group of 12 series-connected spiral conductor patterns (22a-22m). Some of the conductor patterns (21a, 22a, 21d, 22d, 21e, 22e, 21i, 22i, 21j, 22j, 21m and 22m) are disposed on the upper side of the substrate (30). Other ones of the conductor patterns (21b, 22b, 21c, 22c, 21f, 22f, 21h, 22h, 21k, 22k, 21l and 22l) are disposed on the underside of the substrate (30). The conductor patterns on both sides of the substrate (30) are electrically interconnected by means of plated-through connections (40). The first group is in arranged in parallel with the second group by means of common connection electrodes (51 and 52). The conductor patterns (21a-21m) of the first group and the conductor patterns (22a-22m) of the second group are carried by the same substrate (30).
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公开(公告)号：DE69727464D1
公开(公告)日：2004-03-11
申请号：DE69727464
申请日：1997-07-01
Inventor： STEINBUSCH HANS
Abstract: An electromechanical device has a coil configuration comprising an insulating substrate (30) carrying a first group of 12 series-connected spiral conductor patterns (21a-21m) and a second group of 12 series-connected spiral conductor patterns (22a-22m). Some of the conductor patterns (21a, 22a, 21d, 22d, 21e, 22e, 21i, 22i, 21j, 22j, 21m and 22m) are disposed on the upper side of the substrate (30). Other ones of the conductor patterns (21b, 22b, 21c, 22c, 21f, 22f, 21h, 22h, 21k, 22k, 21l and 22l) are disposed on the underside of the substrate (30). The conductor patterns on both sides of the substrate (30) are electrically interconnected by means of plated-through connections (40). The first group is in arranged in parallel with the second group by means of common connection electrodes (51 and 52). The conductor patterns (21a-21m) of the first group and the conductor patterns (22a-22m) of the second group are carried by the same substrate (30).
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公开(公告)号：DE10218565A1
公开(公告)日：2003-11-06
申请号：DE10218565
申请日：2002-04-26
Applicant: PHILIPS INTELLECTUAL PROPERTY
Inventor： WENDT MATTHIAS , STEINBUSCH HANS , DIEFENBACH GERHARD , REICHINGER CHRISTIAN
Abstract: A starting-process controller for starting a piezomotor, having a voltage-controlled oscillator, a power output stage, and a resonant converter. The oscillator generates the control signals required for the power output stage and the resonance converter converts the stepped output voltage from the power output stage into a sinusoidal voltage at the output. The resonance converter drives the piezomotor with the voltage. The motor current that flows when the piezomotor is driven is measured and compared with the phase of the drive voltage in a phase comparator. The comparison output signal is a measure of the phase difference at the time between current and voltage. A phase-locked loop filter smoothes the phase-difference signal for controling the oscillator. The controller includes a start-assisting circuit element that fixes the output voltage from the phase-locked loop filter at start-up and thus applies a constant voltage to the input of the voltage-controlled oscillator.
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