Patents by Inventor Edward LANGERMAN

Edward LANGERMAN 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).

  • High voltage, high efficiency sine wave generator with pre-set frequency and adjustable amplitude
    Patent number: 9910453
    Abstract: An apparatus for generating a sinusoid at a pre-set frequency f includes a DC power source with a controllable output voltage, a transformer, a power switch, a sequencer, and an output filter. The power switch is configured to apply the output of the DC power source to the primary of the transformer in either direction or to remain off based on control signals that are applied to its control input. The sequencer applies control signals to the control input in a choreographed sequence to form an oversampled version of a sine wave. The output filter is connected to the secondary of the transformer, and it passes the pre-set frequency f and attenuates frequencies above a cut-off frequency. In some preferred embodiments, the cut-off frequency is 3f and the transfer function of the output filter has a zero at 5f.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: March 6, 2018
    Assignee: Novocure Limited
    Inventors: Yoram Wasserman, Edward Langerman, Mikhail Shtotland, Sergei Kirillov, Michael Krinitsky, Victor Kaikov
  • High Voltage, High Efficiency Sine Wave Generator with Pre-Set Frequency and Adjustable Amplitude
    Publication number: 20170093277
    Abstract: An apparatus for generating a sinusoid at a pre-set frequency f includes a DC power source with a controllable output voltage, a transformer, a power switch, a sequencer, and an output filter. The power switch is configured to apply the output of the DC power source to the primary of the transformer in either direction or to remain off based on control signals that are applied to its control input. The sequencer applies control signals to the control input in a choreographed sequence to form an oversampled version of a sine wave. The output filter is connected to the secondary of the transformer, and it passes the pre-set frequency f and attenuates frequencies above a cut-off frequency. In some preferred embodiments, the cut-off frequency is 3f and the transfer function of the output filter has a zero at 5f.
    Type: Application
    Filed: September 15, 2016
    Publication date: March 30, 2017
    Applicant: Novocure Limited
    Inventors: Yoram WASSERMAN, Edward LANGERMAN, Mikhail SHTOTLAND, Sergei KIRILLOV, Michael KRINITSKY, Victor KAIKOV