SUMMARY:

• Holder of ten patents through complex design innovations.
• Extensive experience with domestic and international regulatory agencies.
• Developed numerous DC to DC Converters and Inverters for Confidential applications including radiation hardened versions for satellites.
• Developed AC, DC and BLDC motor drives
• Developer of software in C, C++, Pascal, Assembler, Verilog and Basic.
• User of PSpice, LTSpice, and OrCAD Schematic Capture
• User of Mentor Graphics and Eagle for PCB layout.
• Extensive experience in the design Mixed Signal hardware.
• NACI Clearance through Confidential
• Interim Secret Clearance through Confidential
• Past holder of First Class Radio Telephone License

PROFESSIONAL EXPERIENCE:

Confidential

Design Engineering Manager

Responsibilities:

• Provide support on various projects as required.
• Present responsibilities include the development of a photovoltaic string monitor.
• This device provides emergency disconnect capability when the inverters are disconnected, I also designed low cost power supplies for LEO applications for internet use.
• Plus worst case analysis of a space power system POL using LTSpice.
• In addition I also support renewable energy related products and value engineering in the Confidential group.

Confidential

Power Electronics Engineer

Responsibilities:

• Developed µprocessor based motor control systems for custom seats for private and corporate aircraft.
• The controls allow the occupant to raise and lower the head rest, leg rest, seat back and manage the thermal system, sound and lumbar support from a personal digital controller on a CAN network or local push buttons.
• Developed and documented the requirements for a Mitsubishi Regional Jet Braking System.
• Responsible for environmental testing and evaluating the design and performance of a reverse thruster lockout system for Rolls Royce Trent jet engines.
• Evaluated DC/DC power system for 787 APU made recommendations for revising the design.

Confidential

Power Electronics Engineer

Responsibilities:

• Responsible for evaluating the design and performance of DC to DC converter/drivers for brushless DC motors, thermal sensors and related signal conditioning circuitry for accelerometers and analog to digital converters used in guided missile controllers. Interim secret clearance.

Confidential

Power Electronics Engineer

Responsibilities:

• Responsible for the design of a 400 VDC, 3 Kw, buck converter, for testing GaN depletion mode transistors and evaluating their performance in converters for BLDC automotive hybrid applications.
• Board layout was accomplished using Eagle.
• Initial simulation was done with Orcad PSpice.
• Responsible for evaluating and testing of hybrid automotive inverters, of 3 Kw and 60 Kw. developed under contract at Confidential Kingston Ontario for testing newly developed Confidential transistors.
• Developed software programs for controlling an engine dynamometer for testing motor - inverter combinations.
• Revised the mechanical design of the dynamometer for improved mechanical stability and be able to calibrate it.
• Presented research accomplished on GaN transistors for use in DC to DC converters up to 200 kW.

Confidential

Power Supply Engineer

Responsibilities:

• Initial responsibilities was the design of a 20 kilovolt supply Cauer filter to reduce the stored energy while maintaining the filter’s low pass characteristics with ripple less then n 50 mV.
• Designed a 10 kilovolt supply transformer, which delivered 700 watts to a traveling wave tube amplifier.
• Addition projects were the development of a high voltage, 4000 volts to 8000 volts, diode reverse recovery measurement fixture for Si and SiC diodes.
• Re-designed the saturable reactors in a 450 VDC supply to improve efficiency.
• Revised magnetics spread sheets to for the design of high voltage, 10 KV to 20 KV transformers.

Confidential

Senior Staff Engineer

Responsibilities:

• Lead Engineer in the development of a radiation hardened SMPS for the Van Allen Probe mission.
• Responsible for the architecture, schematics, stress analysis, circuit analysis, verification plans, test plans and testing, design of Ground Support Equipment and Confidential user’s guides plus the presentation of the results in PDRs, CDR and FRRs.
• The development included Breadboard units followed by Engineering Models which will in corporate all of the revisions to the original breadboards followed by two Flight Model units for use in the satellites.
• In addition I revised the University of Iowa’s magnetometer power system for the on board Confidential .
• The satellites were successfully launched on August 30, 2012.

Confidential

Principal Engineer

Responsibilities:

• Major areas of concern were harmonic distortion, EMI control, efficiency, power factor and maximum capacity.
• Redesigned the timing system to use interleaved starting times to reduce inrush currents.
• Provide guidance to Confidential engineers using Mentor Graphics Design View tools for board layout.
• Circuit simulation tools used are Orcad PSpice and Confidential SwCad III for their LTC3810, a 100V buck inverter chip.
• Designed buck magnetics, flyback and forward transformers for the supplies. In addition I was also responsible for writing the documentation package which includes Hardware Requirements Document section for the power supply, Schematics, Verification Plan, Test Procedures and Results Document.

Confidential

Senior Electronics Engineer

Responsibilities:

• Initial assignment was to take over the development of a three phase 15 KW, 115V 400 Hz inverter as a Start Power Unit for the 787 Dreamliner, which operating from a twenty eight volt Lithium Ion battery.
• The output of the inverter is a full sine wave.
• The input circuitry consisted of a full wave MOSFET bridge to a planar transformer.
• The output stage used a quad Confidential arrangement to commutate the DC half wave output to a full sine wave.
• Areas requiring immediate improvement were input and output EMI control, regulation, efficiency and over temperature conditions.
• This device was compliant with DO254 and DO160. Test of the SPU were successful.
• In addition I also provided design support to other departments for power conversion requirements, lithium ion battery charges, mentor junior engineers, and provide support to the sales and marketing teams.

Confidential

Senior Staff Engineer

Responsibilities:

• First assignment was support of a network server project for the Airbus A400.
• Developed a solid state relay system to switch a 100 MB/s AFDX link between two server units while maintaining link impedance and minimizing insertion loss.
• Also developed a DC to 4 GHz differential amplifier to build out 100 MB/s Ethernet links.
• Assigned additional responsibility as lead systems engineer of a four member team, developing system specifications and requirements documentation.
• Developed network server power supply.

Confidential

Senior Electronics Development Engineer

Responsibilities:

• Developed Power Conditioning Module with multiple interleaved buck inverters, with Confidential, an external vendor, for the 787 Dreamliner aircraft computer systems.
• The module accepts one of two raw 28 VDC inputs and provides 12.5 DC at 70 amps.
• Provide Power Enable signals to the companion modules enabling their on board power regulators after power has been deemed good.
• The design was developed to DO-254 Level A.
• Reviewed and revised a battery charger for the F35 Stealth Fighter.
• In addition I wrote specifications and Plans for Hardware Acceptance Certification for the Cabinet, Fiber Optics Communications Modules and General Processing Modules.

Confidential

Senior Electronics Development Engineer

Responsibilities:

• Was liaison to Intel at Intel for Confidential Electronics to monitor the development of a reference design for HDTV/SDTV set top boxes.
• Responsibilities were to monitor progress of the design and the printed circuit board layout.
• This included the calculation of magnetic fields from transformers and inductors to minimizing induced noise and maintains an audio signal to noise ratio of 96 db.

Confidential

Senior Electronics Development Engineer

Responsibilities:

• Developed consumer power converters that were alternative supplies for mobile applications for, but not limited to, laptops, digital cameras, cell phones and DVD players.
• The converters operate from either 90 VAC to 265 VAC or from 11 VDC to 32 VDC.
• Added PFC to the unit. The power capacity ranged from 5 W to 120 W.
• My initial project was over seeing a 90 W unit through its first production build in the Confidential .
• My last project was developing a 250 W down gradable converter.
• I analyzed and redesigned several existing products designed and built in the Confidential that operated erratically under certain conditions.
• Developed a synchronous rectifier for SEPIC converters that was patented.
• Wrote supporting documentation for marketing requirements, theory of operation, test procedures, and qualification requirements.

Confidential

Senior Electronics Development Engineer (

Responsibilities:

• Developed power converters, operating from a 270 VDC bus to meet DO254, DO160 and Mil STD 461. Initial projects were the development of 60 KW drives for a 4 BLDC motor air to air refueling boom for Confidential and a 30 Kilowatt supply to operate an emergency hydraulic pump driven a 15 KHz AC motor.
• Both of these projects passed the simulation stage and were in layout and parts procurement stages prior to being shelved.
• Wrote supporting documentation for theory of operation, test procedures, and qualification requirements.
• Analysis of drive circuits using PSpice
• Analyzing motor development using SPEED

Confidential

Senior Electronics Staff Engineer

Responsibilities:

• Developed equipment for characterizing and burning in laser diodes used in the tele- communications industry.
• Developed digital PID temperature controller.
• Developed Drive circuits for thermoelectric coolers from 0 to 125 °C
• Developed drivers for Laser Diodes and Diode Modulators.
• Designed to meet EMI and safety circuits to meet regulatory agency requirements.

Confidential

Senior Electronics Engineer

Responsibilities:

• Developed multiple output switch mode power supplies for Confidential applications.
• Developed SMPS that was stable in a - 55 °C to 90 °C. ambient
• Operate from multiple power sources
• Operate at full load for 100mS after loss of power.
• Patent application for low loss full wave rectifier system.