Patents by Inventor Philip H. Peters
Philip H. Peters 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: 4631449Abstract: A ballast circuit for a fluorescent lamp including a rectifier-filter for coupling to an AC power supply to generate a DC voltage, an oscillator circuit coupled to said DC voltage for developing an RF oscillator signal, and switching signal means for developing concurrent oppositely phased switching signals at the frequency of said oscillator signal to drive series connected power transistors. The common output of the power transistors is coupled to energize a fluorescent lamp coil and regenerative feedback means for generating a signal to aid in switching the power transistors.Type: GrantFiled: August 6, 1984Date of Patent: December 23, 1986Assignee: General Electric CompanyInventor: Philip H. Peters, Jr.
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Patent number: 4592763Abstract: In order to mitigate the problem of back-corona discharge in electrostatic precipitators, method and apparatus are provided for energizing the precipitator electrodes with repeated bursts of high voltage electrical pulses, superimposed upon a direct current voltage level. Additionally, the voltage of the pulses in a single burst is increased from each pulse to the next pulse during the time period that the pulse burst is applied. The effect of the ramping of the pulse burst voltage is to increase the average electric field and ion density during the pulse burst. The result is substantially higher particle charging which leads to improved particle charging collection efficiency.Type: GrantFiled: December 13, 1984Date of Patent: June 3, 1986Assignee: General Electric CompanyInventors: Peter W. Dietz, Philip H. Peters
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Patent number: 4473776Abstract: An incandescent lamp possessing a ballast circuit comprising a resistor and capacitor in parallel further includes means for interrupting the connection between the ballast and external contacts provided on the base of the lamp. This interruption occurs upon removal of the lamp from its matching socket to prevent the occurrence of capacitor voltage across the external lamp contacts. The circuit is again closed upon reinsertion of the lamp in the matching socket to permit normal lamp operation.Type: GrantFiled: June 11, 1982Date of Patent: September 25, 1984Assignee: General Electric CompanyInventor: Philip H. Peters
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Patent number: 4408268Abstract: Four switching elements are configured to reduce the voltage of either an alternating or a direct current electrical power source. The present circuit effectively operates like a variable autotransformer when used with a.c. input power. Additionally, when employed with a conventional resistive load, the present invention exhibits a power factor near unity.Type: GrantFiled: August 9, 1982Date of Patent: October 4, 1983Assignee: General Electric CompanyInventors: Philip H. Peters, Abdallah M. Itani
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Patent number: 4271462Abstract: A power converter utilizes an inverter operating at a frequency near 30 kHz to produce an RF voltage which is divided by a reactive voltage divider, one portion of the divider including a saturable reactor having a control winding which is driven by a negative feedback current from a level sensing circuit connected to the converter output. DC voltage is provided by a bridge rectifier and filter connected across the saturable reactor. The circuit is especially useful for supplying electrical power efficiently to instrumentation on multikilovolt transmission lines where a transformer cascade is used to conductively isolate apparatus operating at the potential of the transmission line from a ground level power source.Type: GrantFiled: September 20, 1978Date of Patent: June 2, 1981Assignee: Electric Power Research InstituteInventor: Philip H. Peters
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Patent number: 4151387Abstract: A metal based cookware induction heating apparatus having an improved power supply and control circuit comprised of a chopper inverter including a gate controlled power thyristor coupled to and supplying an induction heating coil with periodic energization currents. A full wave rectifier supplies rectified, unfiltered, unidirectional high voltage excitation potential to the chopper inverter which converts the excitation potential to a comparatively high frequency of the order of 20 kilohertz for supply to the induction heating coil. A gating circuit is provided for driving the chopper inverter directly from the rectified high voltage excitation potential supplied by the rectifier.Type: GrantFiled: November 1, 1974Date of Patent: April 24, 1979Assignee: Environment/One CorporationInventor: Philip H. Peters, Jr.
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Patent number: 4149167Abstract: 1. An automatic radar jamming transmitter comprising a plurality of voltatuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, discrete voltage tuning means in circuit with each of said magnetrons respectively whereby each of said magnetrons initially and simultaneously generate radio-frequency energy at prescribed discrete frequencies, means for simultaneously varying said discrete voltage tuning means in a random manner whereby the discrete outputs of said magnetrons comprise simultaneously generated frequency modulated noise signals, means for amplifying said noise signals, and means in circuit with said amplifying means for producing random changes in the amplitudes of said noise signals.Type: GrantFiled: March 4, 1955Date of Patent: April 10, 1979Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Philip H. Peters, Jr., Donald A. Wilbur
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Patent number: 4068235Abstract: 1.Type: GrantFiled: February 25, 1955Date of Patent: January 10, 1978Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Philip H. Peters, Jr., Donald A. Wilbur
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Patent number: 4013859Abstract: An induction heating unit is provided having an essentially zero stand-by power requirement and comprised by a high power solid-state inverter for supplying relatively high frequency excitation currents to an induction heating coil, and including inhibit, delay, and starting and stopping gating circuits to control the operation of the high frequency power inverter. An induction heating load sensing device senses the presence of a load such as a pan or other metal base cookware located in induction heating relationship with respect to the induction heating coil. The pan presence sensing device comprises a very low power oscillator coupled to a load sensing coil for exciting the load sensing coil with high frequency oscillatory signals which preferably are in the range of two to three times the frequency at which the power inverter operates.Type: GrantFiled: June 4, 1975Date of Patent: March 22, 1977Assignee: Environment/One CorporationInventor: Philip H. Peters, Jr.
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Patent number: 3958148Abstract: 1. A magnetron discharge device for noise generation comprising an elongated cathode, a plurality of spaced anode segments surrounding said cathode to define a cylindrical space charge chamber, and means for establishing a radial electric field between said cathode and said anode segments for imparting an average rotational velocity about the cathode to an electronic space charge when a magnetic field is axially directed through the space charge chamber, said spaced segments and the gaps between them differing in relative widths whereby electrons traveling under different segments and gaps have different transit times.Type: GrantFiled: August 11, 1952Date of Patent: May 18, 1976Assignee: General Electric CompanyInventors: Donald A. Wilbur, Philip H. Peters, Jr.
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Patent number: 3953783Abstract: A metal based cookware induction heating apparatus having an improved power supply and control circuit comprised of a chopper inverter including a gate controlled power thyristor coupled to and supplying an induction heating coil with periodic energization currents. A full wave rectifier supplies rectified, unfiltered, unidirectional high voltage excitation potential to the chopper inverter which converts the excitation potential to a comparatively high frequency of the order of 20 kilohertz for supply to the induction heating coil. A gating circuit is provided for driving the chopper inverter directly from the rectified high voltage excitation potential supplied by the rectifier.The gating circuit includes an additional low voltage, direct current excitation potential connected to supply to a timing circuit charging capacitor.Type: GrantFiled: March 26, 1974Date of Patent: April 27, 1976Assignee: Environment/One CorporationInventor: Philip H. Peters, Jr.
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Patent number: 3944872Abstract: 1. A magnetron discharge device for noise generation comprising an elongated cathode and a plurality of anode segments surrounding said cathode to define a cylindrical space charge chamber, said cathode comprising a helix having a diameter equal to at least half the space charge chamber diameter and having a spacing between adjacent turns equal to at least half the helix diameter.Type: GrantFiled: August 11, 1952Date of Patent: March 16, 1976Assignee: General Electric CompanyInventors: Donald A. Wilbur, Philip H. Peters, Jr.
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Patent number: 3932801Abstract: An induction heating unit including inverter circuit means comprised by a gate controlled thyristor and commutation circuit coupled together in circuit relationship and excited from a set of power supply terminals connected to a source of excitation potential. An induction heating coil is coupled to and excited by the inverter circuit means in a manner such that the loading on the induction heating coil determines at least in part the operating frequency at which the inverter circuit means operates. Gating circuit means comprised by a gating signal generator and enabling circuit means are coupled to and control turn-on of the gate control thyristor with the gating circuit means comprising a feedback sensing circuit coupled to the induction heating coil for deriving a feedback trigger signal synchronized with the frequency of operation of the commutation circuit.Type: GrantFiled: September 11, 1974Date of Patent: January 13, 1976Assignee: Environment/One CorporationInventor: Philip H. Peters, Jr.