DAVID LAWRENCE ALDRIDGE
Pilots at Lander Ln, Mount Sharp, TX
License number
Texas A2241597
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
421 Lander Ln, Mount Sharp, TX 78620
Professional information
Redundant Power Mixing Element With Fault Detection For Dc-To-Dc Converter
US Patent:
5488531, Jan 30, 1996
Filed:
Jun 30, 1994
Appl. No.:
8/268918
Inventors:
David L. Aldridge - Dripping Springs TX
Stephen R. Bissell - Austin TX
Daniel D. Gunn - Austin TX
Stephen R. Bissell - Austin TX
Daniel D. Gunn - Austin TX
Assignee:
Tandem Computers Incorporated - Cupertino CA
International Classification:
H02J 104, H02H 710
US Classification:
361 18
Abstract:
A power mixing apparatus for mixing current from a first and a second power rail includes a first enabling circuit to provide a first enabling signal, a second enabling circuit to provide a second enabling signal, a first inrush limiter to output a first current in response to the first enabling signal, a second inrush limiter to output a second current in response to the second enabling signal, a first open-circuiting circuit to decouple the first enabling circuit from the first inrush limiter when the first open-circuiting circuit is open-circuited, a second open-circuiting circuit to decouple the second enabling circuit from the second inrush limiter when the second open-circuiting circuit is open-circuited, a first isolation circuit to isolate the first inrush limiter from the second current, a second isolation circuit to isolate the second inrush limiter from the first current, and a direct-current converter to convert the first and the second current in response to the first enabling signal and in response to the second enabling signal.
Flexible Implementation Of Distributed Dc Power
US Patent:
5861684, Jan 19, 1999
Filed:
Dec 27, 1995
Appl. No.:
8/579376
Inventors:
Boyd E. Slade - Austin TX
David L. Aldridge - Dripping Springs TX
William J. Watson - Austin TX
William P. Bunton - Pflugerville TX
David L. Aldridge - Dripping Springs TX
William J. Watson - Austin TX
William P. Bunton - Pflugerville TX
Assignee:
Tandem Computers Incorporated - Cupertino CA
International Classification:
H02J 700
US Classification:
307 66
Abstract:
A DC power distribution system can be configured to utilize a variable number of AC power distribution units. Installation of a converter unit in place of a PDU and resetting of associated switches permits inexpensive and rapid reconfiguration of the system without interrupting power supply to current receiving units. Techniques such as mechanical keying and sense switches minimize the possibility of human error in the reconfiguring operation.
System For Switching Power And Scrubbing Power Mixing Devices For Faults
US Patent:
5548463, Aug 20, 1996
Filed:
Jan 11, 1996
Appl. No.:
8/578883
Inventors:
David L. Aldridge - Dripping Springs TX
William P. Bunton - Pflugerville TX
Stephen R. Bissell - Austin TX
David Brown - Austin TX
Daniel D. Gunn - Austin TX
Carl Kagy - Cedar Park TX
David P. Sonnier - Austin TX
William P. Bunton - Pflugerville TX
Stephen R. Bissell - Austin TX
David Brown - Austin TX
Daniel D. Gunn - Austin TX
Carl Kagy - Cedar Park TX
David P. Sonnier - Austin TX
Assignee:
Tandem Computers Incorporated - Cupertino CA
International Classification:
H02H 700, G01R 3126
US Classification:
361 18
Abstract:
A power switching circuit module includes two power rails coupling independent power supplies to the input of a DC controller and test circuits to detect latent faults in power mixing devices included in the circuit.