James L Harvey

US Patent:

6483724, Nov 19, 2002

Filed:

Feb 15, 2002

Appl. No.:

10/077426

Inventors:

Barry Olen Blair - Garland TX
Gregory H. Fasullo - Dallas TX
James Edward Harvey - Heath TX
Donald Marabell - Dallas TX

Assignee:

Valere Power, Inc. - Dallas TX

International Classification:

H02M 3335

US Classification:

363 17, 363132

Abstract:

Disclosed is a DC/DC converter apparatus comprising a full bridge non-resonant pulse-width-modulated (PWM) switching circuit, which includes inductive device(s), clamp diodes, and an output transformer rectifier and filter circuit. Capacitive and diode elements associated with bridge switching devices operate to switch current through the switches at substantially zero voltage (ZVS). The inductor element and clamp diodes are used to reduce the primary transition shoot through current resulting from reverse recovery of the transformer secondary rectification stage while also reducing emi and semiconductor stresses.

US Patent:

6879199, Apr 12, 2005

Filed:

Feb 15, 2002

Appl. No.:

10/077408

Inventors:

Barry Olen Blair - Garland TX, US
Gregory H. Fasullo - Dallas TX, US
James Edward Harvey - Heath TX, US
Donald Marabell - Dallas TX, US

Assignee:

Valere Power, Inc. - Richardson TX

International Classification:

H03K005/13
H03K001/04

US Classification:

327257, 327258, 327295

Abstract:

Disclosed is an apparatus for generating two constant width and symmetrical drive signals from two separate, but complementary, pulse width modulated control signals while also generating two pulse width modulated drive signals corresponding to said pulse width modulated control signals. The constant width drive signals are generated through the use of a toggle or latch set/reset circuit actuated by a given characteristic of each of the control signals.

US Patent:

7436910, Oct 14, 2008

Filed:

Oct 10, 2006

Appl. No.:

11/545310

Inventors:

Gerald L. Fudge - Rockwall TX, US
James E. Harvey - Heath TX, US
Mark A. Chivers - McKinney TX, US
Sujit Ravindran - Dallas TX, US

Assignee:

L-3 Communications Integrated Systems, L.P. - Greenville TX

International Classification:

H03D 1/00

US Classification:

375340

Abstract:

Reconfigurable direct radio frequency (RF) bandpass sampling receivers are disclosed that utilize analog interpolation filters to improve performance. The addition of the analog interpolation filter to the bandpass sampling receiver allows the quantization clock to be de-coupled from the RF sampling clock. As such, the quantization can be performed at a much slower rate than the initial RF sampling allowing the final analog bandwidth to be much narrower than the bandwidth of the first stage filter located before the high-speed sampler. The combination of a tunable bandpass filter, tunable bandpass sample clock and analog interpolation filter followed by a further stage of sampling and quantization at a slower rate than the bandpass sample clocking, therefore, provides significant advantageous by de-coupling the quantization sample rate from the high-speed sample rate. If desired, the analog interpolation filter may also be tunable. Other variations and implementations are also described.

US Patent:

7436911, Oct 14, 2008

Filed:

Oct 10, 2006

Appl. No.:

11/545641

Inventors:

Gerald L. Fudge - Rockwall TX, US
James E. Harvey - Heath TX, US
Mark A. Chivers - McKinney TX, US
Sujit Ravindran - Dallas TX, US

Assignee:

L-3 Communications Integrated Systems L.P. - Greenville TX

International Classification:

H03D 1/00

US Classification:

375340

Abstract:

Nyquist folded bandpass sampling receivers are disclosed that utilize narrow band filters in parallel with wideband filters to enhance reception of ultra wideband (UWB) pulses. The addition of the narrow band filter facilitates the reception of ultra wideband signal pulses and, therefore, extends the Nyquist folding bandpass sampling receiver to allow improved processing of ultra wideband (UWB) pulses. RF sampling circuitry utilizing a modulated sampling clock signal can then better capture UWB pulse signals.

US Patent:

7436912, Oct 14, 2008

Filed:

Oct 10, 2006

Appl. No.:

11/545642

Inventors:

Gerald L. Fudge - Rockwall TX, US
James E. Harvey - Heath TX, US
Mark A. Chivers - McKinney TX, US
Sujit Ravindran - Dallas TX, US

Assignee:

L-3 Communications Integrated Systems L.P. - Greenville TX

International Classification:

H03D 1/00

US Classification:

375340

Abstract:

Nyquist folded bandpass sampling receivers are disclosed that utilize wideband filters and modulated sampling clocks to identify received signals. In operation, multiple Nyquist zones are allowed to fold on top of each other during sampling. Because the RF sampling clock is modulated, separate frequency modulations can be induced within each Nyquist zone. The signals that are folded together from different Nyquist zones can then be identified and distinguished. In particular, when the Nyquist zones fold on top of each other, the different signals from different Nyquist zones can be separated and identified based on the fact that the added modulation is different for each Nyquist zone. Thus, by using one or more clock modulations to induce frequency modulations that are Nyquist zone dependent, multiple Nyquist zones can be aliased together while still allowing for signals from different Nyquist zones to be separated and identified. Other variations and implementations are also described.

US Patent:

20180272882, Sep 27, 2018

Filed:

Oct 20, 2017

Appl. No.:

15/788971

Inventors:

- Schenectady NY, US
Robert James Catalano - Plano TX, US
James Edward Harvey - Plano TX, US

International Classification:

B60L 11/18
H02J 7/02
H02J 7/06

Abstract:

A charging system for charging an electric vehicle comprises an inductor-inductor-capacitor (LLC) battery charger that includes an isolation transformer having a transformer primary and a transformer secondary, the transformer primary included in an inductive charger station of the charging system and the transformer secondary included in an inductive power receiver of the charging system, with the inductive power receiver positioned on the electric vehicle. The LLC battery charger also includes a magnetizing inductor circuit element and a leakage inductor circuit element integrated into the isolation transformer on the transformer primary. The isolation transformer is constructed such that the transformer primary and the transformer secondary are separable from one another, with a selective engaging and disengaging of the transformer primary and the transformer secondary based on movement of the inductive power receiver on the electric vehicle relative to the inductive charger station.

US Patent:

20180275711, Sep 27, 2018

Filed:

Oct 11, 2017

Appl. No.:

15/729759

Inventors:

- Atlanta GA, US
Edward Clark Fontana - Rockwell TX, US
James Edward Harvey - Heath TX, US
Brandon Michael Kamphaus - Wylie TX, US

International Classification:

G05F 5/00

Abstract:

A controller for use in a line voltage drop compensation system is provided. The controller includes a processing device and a memory device coupled to the processing device. The controller is configured to determine a resistance of a power transmission line, the resistance of the power transmission line determined at least partially based on a plurality of characteristics of a load and the transmission line. The controller is also configured to generate a control signal to control an output voltage of a boost circuit, the output voltage determined at least partially based on the determined resistance of the power transmission line. The controller is further configured to transmit the control signal to the boost circuit to cause the boost circuit to generate an output voltage to compensate for the voltage drop.

US Patent:

20140268608, Sep 18, 2014

Filed:

Oct 23, 2013

Appl. No.:

14/061250

Inventors:

- Schenectady NY, US
Rick Lee Barnett - Dallas TX, US
James Edward Harvey - Heath TX, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H05K 1/18
H05K 3/34

US Classification:

361761, 248 681, 29837

Abstract:

A component holding structure for holding a plurality of through-hole components having an axial lead includes a pair of opposing end walls that define a cavity between them. The cavity is configured to receive the through-hole components. The through-hole components are positioned between the pair of opposing end walls in a vertically-stacked configuration. Each one of the end walls includes at least one slot that is configured to receive the axial lead of each through-hole component when the plurality of through-hole components are inserted into the component holding structure. Each one of the end walls also includes a plurality of lead guides that are configured to guide the axial lead of each through-hole component when the plurality of through-hole components are inserted into the component holding structure.