Patents by Inventor Boh K. Chek

Boh K. Chek 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).

  • Low voltage LED driver circuit
    Patent number: 4866430
    Abstract: A low voltage LED driver circuit utilizes a small magnitude inductor in combination with an astable multivibrator to supply sufficient operating voltage to illuminate an LED from a supply voltage source less than the LED's typical operating voltage. By use of the high pulse rate of multivibrator in conjunction with the small magnitude inductor, the LED is turned on and off at a rate at which it appears to be continuously illuminated to the human eye.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: September 12, 1989
    Assignee: Motorola, Inc.
    Inventor: Boh K. Chek