Circuit for the production of an open alternating magnetic field
Patent 4035745 Issued on July 12, 1977. Estimated Expiration Date: 
July 12, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 12, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References3134948 InventorsAssigneeApplicationNo. 05/686258 filed on 05/13/1976US Classes:331/114, Push-pull330/262, Including push-pull amplifier331/168, Plural tubes331/60SINGLE OSCILLATOR WITH PLURAL OUTPUT CIRCUITSExaminersPrimary: Kominski, JohnAttorney, Agent or FirmAbstractIn an induction energy transfer device comprising a static power conversion circuit for producing an alternating magnetic field of ultrasonic frequency of the type wherein the static power conversion circuit includes a parallel resonant circuit which comprises a coil which also couples power across an air gap, an improvement in efficiency and power transfer is obtained by including at least two such parallel resonant circuits in the power conversion circuit, one of which resonant circuits is tuned to the third harmonic of said fundamental frequency. | |
