US 7,352,550 B2
	Method of detecting run-dry conditions in fuel systems
John E. Mladenik, Escondido, Calif. (US); David L. Evans, Escondido, Calif. (US); Jose M. Barba, San Diego, Calif. (US); Daniel E. Fish, San Diego, Calif. (US); Gerald Bench, Spring Lake, N.J. (US); and Andrew Wagner, San Diego, Calif. (US)
Assigned to TDG Aerospace, Inc., Escondido, Calif. (US)
Filed on Feb. 01, 2005, as Appl. No. 11/49,278.
Application 11/049278 is a continuation in part of application No. 10/866236, filed on Jun. 12, 2004, granted, now 7,254,004.
Claims priority of provisional application 60/547099, filed on Feb. 23, 2004.
Claims priority of provisional application 60/478599, filed on Jun. 13, 2003.
Prior Publication US 2005/0195545 A1, Sep. 08, 2005
Int. Cl. H02H 7/00 (2006.01)

U.S. Cl. 361—87  [361/62]

19 Claims

16. A power line fault response device, comprising: sensor circuitry configured for sensing an operational aspect of a power line; analog signal processing circuitry configured to detect electrical current in the power line and configured to perform an output operation in response to detecting a fault comprising a variation in the detected electrical current; digital signal processing circuitry comprising a processor and memory that is configured to detect electrical current in the power line based on the operational aspect and to perform the output operation in response to detecting a variation in the detected electrical current; wherein the analog signal processing circuitry and the digital signal processing circuitry are each configured to operate independently and simultaneously to respond to faults as they occur to prevent a detected fault from damaging a load being supplied with power by the power line.