Patents by Inventor Herbert Kastle
Herbert Kastle has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8193728Abstract: A circuit arrangement for operating a high-pressure discharge lamp, comprising at least one first electronic switch and one second electronic switch in a half-bridge arrangement; a supply voltage terminal for supplying the half-bridge arrangement with a DC voltage signal; a load circuit, which comprises a lamp inductor and is coupled firstly to the half-bridge center point and secondly to at least one terminal for connecting the high-pressure discharge lamp; a drive circuit for providing at least one first and one second drive signal for the first electronic switch and the second electronic switch, the drive circuit being adapted to provide the first and the second drive signal in such a way that the clock thereof is firstly swept between a first and a second frequency; wherein the drive circuit is furthermore adapted to modulate the first and the second drive signal with a predeterminable third frequency, with the modulation with the predeterminable third frequency being single-tone frequency modulation, witType: GrantFiled: January 10, 2007Date of Patent: June 5, 2012Assignee: OSRAM AGInventor: Herbert Kästle
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Publication number: 20110006695Abstract: A device for generating an igniting voltage for a lamp, comprising: a first resonant circuit that is connected to the lamp via a switch; and a second resonant circuit connected upstream of said first resonant circuit.Type: ApplicationFiled: February 25, 2008Publication date: January 13, 2011Inventor: Herbert Kästle
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Patent number: 7839093Abstract: Disclosed is a circuit arrangement for supplying a lamp wattage to a high-pressure discharge lamp (Lp) in the form of an alternating current having an operating frequency. The alternating current is generated by a full bridge that is composed of two half-bridge branches. The lamp wattage can be adjusted via the phase which the two half-bridge branches have relative to each other. The lamp wattage is modulated by means of the transmission function of an interface if the operating frequency is frequency-modulated. Said modulation of the lamp wattage can be compensated by adequately correcting the phase.Type: GrantFiled: November 30, 2006Date of Patent: November 23, 2010Assignee: OSRAM Gesellschaft mit beschraenkter HaftungInventors: Herbert Kästle, Thomas Rossmanith
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Publication number: 20100013407Abstract: A circuit arrangement for operating a high-pressure discharge lamp, comprising at least one first electronic switch and one second electronic switch in a half-bridge arrangement; a supply voltage terminal for supplying the half-bridge arrangement with a DC voltage signal; a load circuit, which comprises a lamp inductor and is coupled firstly to the half-bridge center point and secondly to at least one terminal for connecting the high-pressure discharge lamp; a drive circuit for providing at least one first and one second drive signal for the first electronic switch and the second electronic switch, the drive circuit being adapted to provide the first and the second drive signal in such a way that the clock thereof is firstly swept between a first and a second frequency; wherein the drive circuit is furthermore adapted to modulate the first and the second drive signal with a predeterminable third frequency, with the modulation with the predeterminable third frequency being single-tone frequency modulation, witType: ApplicationFiled: January 10, 2007Publication date: January 21, 2010Applicant: OSRAM Gesellschaft mit beschrankter HaftungInventor: Herbert Kästle
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Publication number: 20080284345Abstract: Disclosed is a circuit arrangement for supplying a lamp wattage to a high-pressure discharge lamp (Lp) in the form of an alternating current having an operating frequency. The alternating current is generated by a full bridge that is composed of two half-bridge branches. The lamp wattage can be adjusted via the phase which the two half-bridge branches have relative to each other. The lamp wattage is modulated by means of the transmission function of an interface if the operating frequency is frequency-modulated. Said modulation of the lamp wattage can be compensated by adequately correcting the phase.Type: ApplicationFiled: November 30, 2006Publication date: November 20, 2008Inventors: Herbert Kastle, Thomas Rossmanith
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Patent number: 7388335Abstract: In the case of an apparatus for providing a sinusoidally amplitude-modulated operating voltage, two switches are arranged in the form of a half bridge, and an LC element is arranged downstream of the half bridge. The first switch is driven by a first square-wave signal in a clocking with the amplitude modulation frequency per clock cycle, and the second switch (QLOW) is driven by a second square-wave signal, which is shorter than the first signal, with a temporal offset with respect to the first signal in each clock cycle. The LC element (LMOD, CMOD) acts as a filter for the signal resulting from the driving of the switches at a connection point (K) between the switches and allows a DC voltage component and a sinusoidal component of the signal with the fundamental frequency of the clocking to pass through, but substantially filters out harmonics.Type: GrantFiled: June 19, 2006Date of Patent: June 17, 2008Assignee: Patent-Treuhand-Gesellschaft Für Elektrische Glühlampen mbHInventor: Herbert Kästle
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Publication number: 20060284571Abstract: In the case of an apparatus for providing a sinusoidally amplitude-modulated operating voltage, two switches are arranged in the form of a half bridge, and an LC element is arranged downstream of the half bridge. The first switch is driven by a first square-wave signal in a clocking with the amplitude modulation frequency per clock cycle, and the second switch (QLOW) is driven by a second square-wave signal, which is shorter than the first signal, with a temporal offset with respect to the first signal in each clock cycle. The LC element (LMOD, CMOD) acts as a filter for the signal resulting from the driving of the switches at a connection point (K) between the switches and allows a DC voltage component and a sinusoidal component of the signal with the fundamental frequency of the clocking to pass through, but substantially filters out harmonics.Type: ApplicationFiled: June 19, 2006Publication date: December 21, 2006Applicant: PATENT-TREUHAND-GESELLSCHAFT FUR ELEKTRISCH GLUHLAInventor: Herbert Kastle
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Patent number: 7129649Abstract: A ballast for at least one lamp at least two switches arranged in series; a control circuit for alternately opening and closing the two switches; a connection for applying a supply voltage to the two switches; a resonant starting circuit coupled on the input side to the junction point between the two switches and on the output side to a first connection for the lamp, the resonant starting circuit having a resonant inductance arranged in series with the junction point between the two switches (S1, S2) and the first connection for the lamp, and a resonant capacitance arranged for alternating current purposes in parallel with the first and second connections for the lamp, a first braking inductance which, for alternating current purposes, is firstly arranged in series with the first of the two connections for the lamp and secondly in parallel with the resonant capacitance.Type: GrantFiled: April 4, 2005Date of Patent: October 31, 2006Assignee: Patent-Treuhand-Gesellschaft fur Elektrisch Gluhiampen mbHInventor: Herbert Kästle
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Publication number: 20050285544Abstract: A circuit arrangement for operating at least one high-pressure discharge lamp (16), has four switches (Q1 to Q4) in a full-bridge arrangement (14), a first and a second switch (Q1, Q2) forming the first half-bridge arm, and a third and a fourth switch (Q3, Q4) forming the second half-bridge arm, at least two terminals for coupling the high-pressure discharge lamp (16) between the midpoint of the first and the second half-bridge arms, at least two terminals for supplying the circuit arrangement (10) with a dc voltage signal and a drive circuit (20) for driving the four switches (Q1 to Q4). The drive circuit (20) is designed to provide drive signals, (z1(t), Z2(t), {overscore (z)}1(t), {overscore (z)}2(t)) for the four switches (Q1 to Q4), whose clock pulse (ft) is swept between a first and a second frequency, and whose pulse width and/or phase is modulated with a prescribable third frequency (fa).Type: ApplicationFiled: July 12, 2004Publication date: December 29, 2005Inventor: Herbert Kastle
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Publication number: 20050218833Abstract: A ballast for at least one lamp at least two switches arranged in series; a control circuit for alternately opening and closing the two switches; a connection for applying a supply voltage to the two switches; a resonant starting circuit coupled on the input side to the junction point between the two switches and on the output side to a first connection for the lamp, the resonant starting circuit having a resonant inductance arranged in series with the junction point between the two switches (S1, S2) and the first connection for the lamp, and a resonant capacitance arranged for alternating current purposes in parallel with the first and second connections for the lamp, a first braking inductance which, for alternating current purposes, is firstly arranged in series with the first of the two connections for the lamp and secondly in parallel with the resonant capacitance.Type: ApplicationFiled: April 4, 2005Publication date: October 6, 2005Applicant: PATENT-TREUHAND-GESELLSCHAFT FUR ELEKTRISCHE GLUHLAMPEN MBHInventor: Herbert Kastle
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Patent number: 6922114Abstract: The operating method is based on the simultaneous application of FM and AM, and is distinguished by passing through three operating states, specifically a warm-up phase, an impressing phase and the continuous operation. In the warm-up phase, the f002_hor is selected as fundamental frequency of the AM, or an AM is dispensed with. The impressing phase is distinguished by a temporally changing AM deviating from the conditions of the continuous operation and having an AM degree different from zero. In the continuous operation, constant conditions of the AM in the case of which the f002_hor is reached as fundamental frequency of the AM, and the AM degree is at 20 to 25% are characteristic.Type: GrantFiled: November 12, 2003Date of Patent: July 26, 2005Assignee: Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbHInventors: Herbert Kästle, Klaus Stockwald
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Patent number: 6891337Abstract: Lighting system for high-pressure discharge lamps which can generate a lamp voltage UL which is amplitude and, if necessary, frequency-modulated. The frequency modulation is provided by an inverter whose inverter frequency is modulated. The inverter is fed by a clocked d.c. voltage supply which emits an operating voltage U0 which is amplitude-modulated.Type: GrantFiled: April 8, 2003Date of Patent: May 10, 2005Assignee: Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbHInventors: Andreas Huber, Herbert Kästle, Walter Limmer, Peter Niedermeier
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Publication number: 20040095076Abstract: The operating method is based on the simultaneous application of FM and AM, and is distinguished by passing through three operating states, specifically a warm-up phase, an impressing phase and the continuous operation.Type: ApplicationFiled: November 12, 2003Publication date: May 20, 2004Applicant: PATENT-TREUHAND-GESELLSCHAFT FUR ELEKTRISCH GLUHLAMPEN MBHInventors: Herbert Kastle, Klaus Stockwald
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Publication number: 20030193302Abstract: Lighting system for high-pressure discharge lamps which can generate a lamp voltage UL which is amplitude and, if necessary, frequency-modulated. The frequency modulation is provided by an inverter whose inverter frequency is modulated. The inverter is fed by a clocked d.c. voltage supply which emits an operating voltage U0 which is amplitude-modulated.Type: ApplicationFiled: April 8, 2003Publication date: October 16, 2003Applicant: PATENT-TREUHAND-GESELLSCHAFT FUR ELEKTRISCH GLUHLAMPEN MBHInventors: Andreas Huber, Herbert Kastle, Walter Limmer, Peter Niedermeier