Patents by Inventor Bernd Busch

Bernd Busch 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).

  • Patent number: 4704673
    Abstract: The invention relates to a phase-adjusting device for the inverter, having controllable semiconductors, of a parallel-resonant circuit frequency converter. The phase-adjusting device, operating on the PLL principle, compares a signal derived from the inverter output voltage and a signal delayed by a predetermined amount in relation to the control pulses of the oscillator 1 to a phase-comparing stage. In dependence on the phase comparison of the two signals, the oscillator frequency is so adjusted that the inverter output voltage and the inverter output current are in phase.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: November 3, 1987
    Assignee: AEG-Elotherm GmbH
    Inventor: Bernd Busch