Charles E Hanlin

Address:

705 Fiesta Del Rey Ave, North Las Vegas, NV 89081

Phone:

(702)6338906

VIN:

KM8NU13C37U025236

Make:

HYUNDAI

Model:

VERACRUZ

Year:

2007

US Patent:

55964710, Jan 21, 1997

Filed:

May 5, 1995

Appl. No.:

8/435299

Inventors:

Charles E. Hanlin - Fremont CA

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

H02H 324
H02H 709

US Classification:

361 92

Abstract:

An adjustable undervoltage trip fault interrupt circuit is used to prevent "nuisance" undervoltage fault trips caused by instantaneous sags in the AC power lines of less than a selectable time. The interrupt circuit includes a time delay circuit (IC4) responsive to a detected signal for generating a pulse signal having a selectable duration. A gating circuit (IC3) is responsive to the detected signal and the pulse signal for generating a fault trip signal only when the detected signal is longer than the selected duration of the pulse signal. In this manner, instantaneous line sags shorter than the selected duration of the pulse signal are eliminated from causing the "nuisance" interruption of a variable frequency drive controller.

US Patent:

56829167, Nov 4, 1997

Filed:

Dec 1, 1995

Appl. No.:

8/566387

Inventors:

Charles E. Hanlin - Fremont CA

Assignee:

Advanced Micro Devices Inc. - Sunnyvale CA

International Classification:

F17D 300

US Classification:

137 1

Abstract:

A controller having a first timer and a second timer for controlling a duration of a blowdown valve. A coincidence circuit including a second set of timers determines whether an operational overlap interval exists, and properly extends operation of the blowdown valve.