Hieu Le Phones & Addresses
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El Monte, CA
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Phila, PA
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1918 S 16Th St, Philadelphia, PA 19145
Work
Position:
Food Preparation and Serving Related Occupations
Publications
Wikipedia References
Hieu Van Le
Work:
Position:
Lieutenant governor • Chairman • Manager • Investigator
Education:
He was educated and raised in Da Nang, and attended the University of Dalat. He fled Vietnam from the new communist regime in November 1977, and arrived in Darwin, Australia, Northern Territory....
Skills & Activities:
Ascribed status:
Australian of Vietnamese descent
Preference:Communist
Us Patents
Current Feedback Differential Amplifier Clamp
View pageUS Patent:
58595694, Jan 12, 1999
Filed:
Apr 14, 1997
Appl. No.:
8/843200
Inventors:
Hieu M. Le - Midway City CA
Lloyd F. Linder - Agoura Hills CA
Erick M. Hirata - Torrance CA
Benjamin Felder - Saugus CA
Roger N. Kosaka - Torrance CA
Donald G. McMullin - Rancho Santa Margarita CA
Kelvin T. Tran - Carson CA
Lloyd F. Linder - Agoura Hills CA
Erick M. Hirata - Torrance CA
Benjamin Felder - Saugus CA
Roger N. Kosaka - Torrance CA
Donald G. McMullin - Rancho Santa Margarita CA
Kelvin T. Tran - Carson CA
Assignee:
Raytheon Company - El Segundo CA
International Classification:
H02H 720
H03M 112
H03M 112
US Classification:
330298
Abstract:
A current steering circuit diverts bias current from a differential current summing amplifier's front end when the differential input exceeds a safe threshold level, thus preventing the amplifier's output stage from being overdriven. Diverting the front end's bias currents also turns off transistors within the amplifier's front end and thus protects the front end from damage which may otherwise result from excessive input signals.
Temperature Compensated Amplifier
View pageUS Patent:
58595686, Jan 12, 1999
Filed:
Apr 11, 1997
Appl. No.:
8/827854
Inventors:
Hieu M. Le - Midway City CA
Lloyd F. Linder - Agoura Hills CA
Erick M. Hirata - Torrance CA
Don C. Devendorf - Carlsbad CA
Lloyd F. Linder - Agoura Hills CA
Erick M. Hirata - Torrance CA
Don C. Devendorf - Carlsbad CA
Assignee:
Raytheon Company - El Segundo CA
International Classification:
H03F 130
US Classification:
330289
Abstract:
An amplifier includes an amplifying circuit and bias current circuit. The bias current circuit includes a beta matching circuit which employs a temperature compensated current reference to develop a bias current for the amplifying circuit. The beta matching circuit is connected to track the current gains of transistors within the amplifying circuit and to thereby provide a temperature compensated bias current to the amplifying circuit. The bias current maintains a fixed bias point regardless of temperature-induced, or other, variations of the current gains of the amplifying circuit's transistors.