Patents by Inventor L. Dale Clark

L. Dale Clark 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: 4400812
    Abstract: Circuitry which is capable of supplying a short-pulsewidth drive signal to a laser source, or the like. The circuitry comprises a plurality of VMOS transistors arranged to amplify both the voltage and current levels of an applied low-voltage, short-pulsewidth input signal, while maintaining the short pulsewidth thereof. Two embodiments are disclosed which employ either a plurality of parallel VMOS transistors in the output stage, or a signal VMOS output transistor, to drive the laser source. Pulsewidths of the drive signal are on the order of 20-40 nanoseconds with rise and decay times on the order of 2-7 nanoseconds. A first embodiment is capable of providing drive signals having peak power levels of about 90 watts utilizing an 80 volt power supply. A second embodiment is capable of providing drive signals having peak power levels on the order of 500 milliwatts.
    Type: Grant
    Filed: June 15, 1981
    Date of Patent: August 23, 1983
    Assignee: Santa Barbara Research Center
    Inventors: L. Dale Clark, William J. Archambeault