Chester E Phillips

US Patent:

39381501, Feb 10, 1976

Filed:

Jun 25, 1974

Appl. No.:

5/482974

Inventors:

Chester C. Phillips - Rockville MD
William H. Zinger - Columbia MD
Robert F. Platte - Laurel MD
Melrose M. Jesurun - Silver Spring MD
Dennis H. Matthias - Columbia MD

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01S 740

US Classification:

343 177

Abstract:

A test set for an amplifier or other electronic device in which a waveform enerator furnishes a modulated RF signal to the item under test. Sensors extract samples of the RF signal at the item's input and output. A detector-mixer network compares and processes the input and output sample signals and produces signals at its output which are indicative of the phase distortion and amplitude distortion introduced by the item. The phase and amplitude distortion signals are sampled and held for each modulating signal pulse and are then processed to compile statistical data regarding the item's performance.

US Patent:

50520067, Sep 24, 1991

Filed:

Aug 23, 1990

Appl. No.:

7/571493

Inventors:

Chester C. Phillips - Columbia MD
Shiow-Hwa Lin - San Diego CA

Assignee:

Thermo Electron Technologies Corp. - San Diego CA

International Classification:

H01S 319

US Classification:

372 44

Abstract:

A beam of radiation radiates in sequence an array of semi-conductor switches at an extremely rapid rate. Electron-hole pairs created by radiation permit the semiconductor switches to conduct electric current for a very brief period of time.

US Patent:

41990234, Apr 22, 1980

Filed:

Nov 4, 1977

Appl. No.:

5/848669

Inventors:

Chester C. Phillips - Rockville MD

International Classification:

F25B 2900

US Classification:

165 12

Abstract:

An electronic means to cyclically control the heat or air conditioning source in an environmental temperature control system so that the heat exchange surfaces are maintained within a predetermined range to maximize heat exchange efficiency and minimize total operating time of the heat or cooling source. The apparatus incorporates a temperature responsive transducer which provides a voltage level that is compared to an analog representation of a controllable, periodic output of a digital counter to produce a signal for selectively energizing the heat or cooling source of the environmental temperature control system for a time period proportional to heat demand but limited to relatively short durations of time so as to minimize or limit the temperature of the heat exchange surface during temperature modification demand periods.