Patents by Inventor Peter Dartnell

Peter Dartnell 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).

  • TTL logic driver circuit
    Patent number: 6002269
    Abstract: A bootstrap logic driver circuit operable from a low voltage power supply includes first and second bipolar transistors coupled between positive and negative voltage supplies and having a collector load comprising a first diode structure. A further transistor coupled between the voltage supplies has a collector load comprising a second diode structure. A bootstrap capacitor coupled between the diode structures stores charge when the circuit is in a first condition and is discharged when the circuit is in a second condition to provide an enhanced drive voltage for an output transistor.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: December 14, 1999
    Assignee: Northern Telecom Limited
    Inventors: Peter Dartnell, Joseph Chan