Vatche W Vorperian

Author:

Vatche Vorperian

ISBN #:

0521624428

US Patent:

7109668, Sep 19, 2006

Filed:

Oct 27, 2004

Appl. No.:

10/975203

Inventors:

Igor Pogodayev - Huntington Beach CA, US
Vatche Vorperian - Irvine CA, US
Ronald Flores - Huntington Beach CA, US

Assignee:

I.E.P.C. Corp. - Huntington Beach CA

International Classification:

H05B 37/02

US Classification:

315307, 315308, 315224

Abstract:

An electronics enclosure has a mains input and a lamp output. A power factor correction circuit is installed in the enclosure, to provide a DC output voltage. An inverter is also installed in the enclosure. Control electronics is also installed in the enclosure to control the inverter, and to receive a selection of lamp load type made manually by a user via a user interface on an outside face of the enclosure. The same lamp output can thus alternatively drive, for example, a high pressure sodium lamp and a metal halide lamp, as indicated by the selection. Other embodiments are also described and claimed.

US Patent:

20070001617, Jan 4, 2007

Filed:

Sep 8, 2006

Appl. No.:

11/518576

Inventors:

Igor Pogodayev - Huntington Beach CA, US
Vatche Vorperian - Irvine CA, US
Ronald Flores - Huntington Beach CA, US

International Classification:

H05B 41/36

US Classification:

315224000

Abstract:

An electronics enclosure has a mains input and a lamp output. A power factor correction circuit is installed in the enclosure, to provide a DC output voltage. An inverter is also installed in the enclosure. Control electronics is also installed in the enclosure to control the inverter, and to receive a selection of lamp load type made manually by a user via a user interface on an outside face of the enclosure. The same lamp output can thus alternatively drive, for example, a high pressure sodium lamp and a metal halide lamp, as indicated by the selection. Other embodiments are also described and claimed.

US Patent:

20070194721, Aug 23, 2007

Filed:

Aug 17, 2005

Appl. No.:

11/206476

Inventors:

Vatche Vorperian - Irvine CA, US
Igor Pogodayev - Huntington Beach CA, US
Ronald Flores - Huntington Beach CA, US

International Classification:

H05B 41/24

US Classification:

315247000

Abstract:

A number of elements are integrated within an electronics enclosure. A non-inverting buck-boost converter is to operate in the continuous conduction mode designed to provide an average power of more than 200 watts at its DC output. A power bus is coupled to the DC output. Multiple inverter circuits are coupled to the power bus in parallel, each inverter circuit having a respective output to drive a respective electric discharge lamp. Other embodiments are also described and claimed.

US Patent:

20120275204, Nov 1, 2012

Filed:

Apr 26, 2011

Appl. No.:

13/093854

Inventors:

Vatche Vorperian - Irvine CA, US

International Classification:

H02M 7/155
H02M 7/06

US Classification:

363126

Abstract:

Six, non-isolated, high-frequency, PWM dc-to-dc converters with two switches and bipolar output voltage are reported to perform power factor correction without requiring a bridge rectifier circuit on their input AC side. The first three of these converters have a voltage conversion ratio which is a singular function of the duty cycle and are used to obtain DC output voltages that are larger than the peak AC input voltage. The other three converters are the bilateral inverses of the first three which have a current conversion ratio which is a singular function of the duty cycle and are used to obtain DC output voltages that are significantly lower than the peak AC input voltage. No PFC circuits using only two switches have been known to the prior art.

US Patent:

60855940, Jul 11, 2000

Filed:

Sep 4, 1998

Appl. No.:

9/158163

Inventors:

Roman C. Gutierrez - Glendale CA
Christopher B. Stell - Valencia CA
Tony K. Tang - Glendale CA
Vatche Vorperian - Irvine CA
Jaroslava Wilcox - Los Angeles CA
Kirill Shcheglov - Pasadena CA
William J. Kaiser - Los Angeles CA

Assignee:

The United States of America as represented by the Administrator of the
National Aeronautics and Space Administration - Washington DC

International Classification:

G01L 1100

US Classification:

73704

Abstract:

A pressure sensor has a high degree of accuracy over a wide range of pressures. Using a pressure sensor relying upon resonant oscillations to determine pressure, a driving circuit drives such a pressure sensor at resonance and tracks resonant frequency and amplitude shifts with changes in pressure. Pressure changes affect the Q-factor of the resonating portion of the pressure sensor. Such Q-factor changes are detected by the driving/sensing circuit which in turn tracks the changes in resonant frequency to maintain the pressure sensor at resonance. Changes in the Q-factor are reflected in changes of amplitude of the resonating pressure sensor. In response, upon sensing the changes in the amplitude, the driving circuit changes the force or strength of the electrostatic driving signal to maintain the resonator at constant amplitude. The amplitude of the driving signals become a direct measure of the changes in pressure as the operating characteristics of the resonator give rise to a linear response curve for the amplitude of the driving signal. Pressure change resolution is on the order of 10. sup.

US Patent:

60792728, Jun 27, 2000

Filed:

Aug 7, 1998

Appl. No.:

9/130696

Inventors:

Christopher B. Stell - Valencia CA
Vatche Vorperian - Irvine CA
Roman C. Gutierrez - Glendale CA
Tony K. Tang - Glendale CA

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

G01P 904

US Classification:

7350412

Abstract:

A gyroscope system can detect the amount of movement of the system. The gyroscope system includes a circuit that has a number of different features and detects movement independent of any circuit parameters. The first feature uses a feedback loop to compensate for difference in Q factors between the circuits. Another feature regulates the amplitude of the resonator. Yet another feature extracts the rotation rate signals from the gyroscope in a new way.