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Howard Leverenz Phones & Addresses

  • 2118 Chippendale Rd, Houston, TX 77018 (713) 957-8666 (713) 957-8667
  • 2118 Chippendale Rd, Houston, TX 77018 (713) 957-8667

Work

Position: Professional/Technical

Education

Degree: Graduate or professional degree

Emails

k***j@arrl.net

Resumes

Resumes

Howard Leverenz Photo 1

Power Systems Design Engineer At Hewlett-Packard

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Location:
1321 east Cooper Dr, Palatine, IL 60074
Industry:
Computer Hardware
Work:
Texas Microsystems 1983 - 2003
Staff Engineer

Texas Micro/Radisys 1981 - 2003
Staff Design Engineer

Radisys Corporation 2000 - 2003
Staff Engineer

Radisys Corporation 2000 - 2002
Staff Design Engineer

Texas Micro 1983 - 2000
Engineer
Skills:
Computer Hardware
Howard Leverenz Photo 2

Boss

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Work:

Boss

Publications

Us Patents

Point Of Load (Pol) Power Supply Systems With Replacement Module

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US Patent:
8279619, Oct 2, 2012
Filed:
Mar 25, 2010
Appl. No.:
12/731687
Inventors:
Howard Leverenz - Houston TX, US
Mohamed Amin Bemat - Houston TX, US
Reynaldo P. Domingo - Houston TX, US
Kailash Kishore Mirpuri - Houston TX, US
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
H05K 7/00
US Classification:
361777, 361760, 361781
Abstract:
A method for fabricating a point-of-load (POL) power supply system can include providing a circuit board. The circuit board can include a first set of connections configured for coupling a predetermined first portion of components of a voltage regulator down (VRD) system to the circuit board and a second set of connections configured for coupling a replacement module to the circuit board. Each of the first set of connections and the second set of connections is electrically coupled with a third set of connections that is configured for coupling a second portion of components of the VRD system to the circuit board. The second portion of components of the VRD system is connected to the circuit board. The replacement module is connected onto the circuit board via the second set of connections such that the replacement module and the second portion of components of the VRD system cooperate to provide at least a portion of the POL system.

Gate Drive Voltage Selection For A Voltage Regulator

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US Patent:
20080209236, Aug 28, 2008
Filed:
Feb 28, 2007
Appl. No.:
11/680524
Inventors:
Charles N. Shaver - Cypress TX, US
Howard Leverenz - Houston TX, US
International Classification:
G06F 1/26
US Classification:
713300
Abstract:
A system comprises a load and a voltage regulator. The voltage regulator is configured to select a gate drive signal from among a plurality of input voltages. The voltage regulator is configured to use the selected gate drive signal to turn on a power transistor to produce a regulated voltage for the load.

Determining A Quantity Of Hot Swap Controllers

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US Patent:
20190286601, Sep 19, 2019
Filed:
Mar 15, 2018
Appl. No.:
15/922148
Inventors:
- Houston TX, US
Howard Leverenz - Houston TX, US
Dylan A. Quiroz - Houston TX, US
International Classification:
G06F 13/40
H02H 9/00
H02H 9/02
G05F 1/573
Abstract:
A controller, comprising: a processing resource; and a memory resource storing machine-readable instructions to cause the processing resource to: activate a detection signal to enable a transistor coupled to the controller; determine a voltage associated with a plurality of hot swap controllers; and determine, in view of the voltage, a quantity of hot swap controllers included in the plurality of hot swap controllers.

Circuits To Identify Protection Device Failures

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US Patent:
20190237959, Aug 1, 2019
Filed:
Jan 26, 2018
Appl. No.:
15/880845
Inventors:
- Houston TX, US
Christopher C. Wanner - Tomball TX, US
Howard Leverenz - Houston TX, US
International Classification:
H02H 1/00
H02H 3/08
H02H 11/00
G01R 31/07
Abstract:
Examples herein relate to an apparatus. In some examples, an apparatus may include a circuit to direct a power signal to at least one electrical component. The circuit may include a protection device to regulate power to the electrical component, detection circuitry to detect when the protection device has failed, and an alert handling logic to receive a signal from the detection circuitry that the protection device has failed.

Variable Soft Start

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US Patent:
20190006839, Jan 3, 2019
Filed:
Dec 18, 2015
Appl. No.:
16/063363
Inventors:
- Houston TX, US
Howard Leverenz - Houston TX, US
Michael Delany - Houston TX, US
Mohamed Amin Bemat - Houston TX, US
International Classification:
H02H 9/00
G01R 27/26
G06F 1/26
H03K 17/16
H03K 17/22
Abstract:
Example implementations relate to a variable soft start device. For example, in an implementation, the variable soft start device may set the capacitance of a variable capacitance circuit connected to a soft start pin of the electronic fuse. The variable soft start device may read a power-good signal from the electronic fuse and determine the capacitance to set according to the power-good signal.

Multi-Node System Fault Management

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US Patent:
20180254626, Sep 6, 2018
Filed:
Mar 1, 2017
Appl. No.:
15/446458
Inventors:
- Houston TX, US
Howard LEVERENZ - Houston TX, US
Daniel HUMPHREY - Houston TX, US
International Classification:
H02H 3/44
H02H 7/20
G01R 31/02
G01R 19/12
Abstract:
Examples disclosed herein relate to multi-node system fault management. In some of the examples disclosed herein, a fault detection circuit may distinguish between normal operating conditions of a multi-node system and faults that occur between the overcurrent protection of the system's power supplies and the hot plug protection of the system's nodes. The fault detection circuit may detect these faults by monitoring a voltage at the node's backplane connector prior to the input of the node's hot plug protection interface. If the magnitude of the monitored voltage drops below a threshold voltage at a rate that exceeds a threshold rate, the fault detection circuit may determine that a fault has occurred and may communicate the fault to the power supplies. The power supplies may receive the fault communication and shut off their power outputs to prevent the fault from causing damage to the components in the system.
Howard J Leverenz from Houston, TX, age ~76 Get Report