David M Donnelly

US Patent:

20050162794, Jul 28, 2005

Filed:

Oct 21, 2004

Appl. No.:

10/969048

Inventors:

David Donnelly - Largo FL, US
Charles Green - Palm Harbor FL, US
John Lintz - Dunedin FL, US
Craig Allen - Clearwater FL, US

International Classification:

H02H003/08

US Classification:

361093100

Abstract:

A method for mitigating harmful radiation effects on at least one electrical component are disclosed. In a first preferred embodiment, power drawn by the electrical component, such as a GPS receiver, is monitored and compensated by an offset for expected variations due to temperature. When current drawn by the GPS receiver is higher than expected during operation at a given temperature, power to the electrical component is interrupted. Alternatively, or in addition thereto, a second preferred embodiment includes monitoring communications from the GPS receiver. When communications cease or fall below an acceptable level for a predetermined period of time, power to the electrical component is interrupted.

US Patent:

56230982, Apr 22, 1997

Filed:

Mar 25, 1994

Appl. No.:

8/218094

Inventors:

Bruce W. Castleman - St. Petersburg FL
David S. Donnelly - Palm Harbor FL
Paul O. Rock - St. Petersburg FL

Assignee:

Honeywell Inc. - Minneapolis MN

International Classification:

G01P 1508

US Classification:

73497

Abstract:

A microwave resonator, useable for acceleration detection, having a cavity in which a resonant frequency F. sub. 1 which changes with changes in length of the cavity and with change in crossectional dimensions of the cavity is compensated for changes in crossectional dimensions by forming a second resonant frequency F. sub. 2 in the cavity which changes with changes in crossectional dimensions and modifying F. sub. 1 by F. sub. 2 so as to eliminate the change in F. sub. 1 due to changes in crossectional dimensions.