Patents by Inventor Gerald M. Hogan

Gerald M. Hogan 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).

  • Dual stage AC to DC switching power supply with high voltage, low current intermediate DC and low voltage, high current regulated DC output
    Patent number: 5864473
    Abstract: AC power is converted to a low-voltage, high-current DC output by a power supply which contains two stages. The first stage is an AC to DC converter using a full wave bridge rectifier to convert the voltage from the AC source to an intermediate raw DC voltage. The second stage is a DC to DC forward converter using a transformer with its primary winding connected to the intermediate raw DC voltage through a switch which is cycled "on" and "off" at a predetermined frequency. During the switch "on" portions of the cycle a current flows in the primary winding powering the output and charging an inductor which is connected to the secondary winding. When the switch is turned "off", no current flows through the transformer and the load is powered by the energy stored in the inductor. A secondary coil is magnetically coupled to the inductor and has a induced voltage proportional to the output voltage.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: January 26, 1999
    Assignee: Operating Technical Electronics, Inc.
    Inventors: William F. Slack, Gerald M. Hogan