Patents by Inventor Lawrence E. Hanebrink, Jr.

Lawrence E. Hanebrink, Jr. 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).

  • Ringing generator and method for converting DC to AC having continuously adjustable amplitude
    Patent number: 5490054
    Abstract: A ringing generator and a method for converting a DC input voltage signal from a DC source to an AC output voltage and supplying this output voltage to a variable load, The output signal has a continuously adjustable amplitude so as to continuously adapt to the current demanded by the load, A power supply converts the DC input voltage to variable DC supply voltages. A linear amplifier then converts these variable supply voltages to an AC output voltage using a precision sine wave oscillator as a reference. A load current sensor senses and measures the output current being supplied to the load and then a control circuit is employed to automatically and continuously adjust the amplitude of the output voltage to maintain the maximum output current that can be safely supplied to the load by the linear amplifier.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: February 6, 1996
    Assignee: Ferro Magnetics Corporation
    Inventor: Lawrence E. Hanebrink, Jr.