SUMMARY:

• Electronic Integration Electrical Engineer wif 18 years experiences, seeking a job position in electronic system integration design, experienced in all analog, all digital,, OPAMP, ADC, DAC, AC DC Power Supply, analog simulation
• LTSPICE and digital simulation MODELSIM FPGA CPLD, New Board Bring - up, Debug, Prototype, Component Selection and Purchase, BOM & ECO, assisting manufacturing floor, and board-level electronic system integration.
• Op Amp (General Purpose, Differential, Current Drive, Instrumentation, Programming Gain), Sensor Transducer, filter (RC, LC, PASSIVE, ACTIVE), MOSFET, IGBT (Insulated-gate bipolar transistor), bipolar junction transistor (BJT), CMOS, MOSFET (also Silicon Carbide MOSFET), Darlington (high gain low base current), regulator, PWM (Pulse Width Modulation), ADC DAC and SPI, RS232, RS422, LVDS, Brushless DC
• Motor Control, AC 2 phase 3 phase, AC ZERO CROSS, AC Activated High Efficient Ideal Rectifier Switch in 2 phase and 3 phase AC to DC, and DC to AC.
• Manufacture, PCB (Print Circuit Board), Electrical Safety, BOM (Bills of Materials), Gerber File, Assemblies, Engineering Change Order
• FPGA CPLD logic design RTL coding in VHDL VERILOG AHDL; logic and test bench simulation, using XILINX (ISE), ALTERA (QUARTUS, MAX+PLUS), MODELSIM, SYNPLICITY, ACTEL (Libero IDE), and FPGA Board Design & Lab Debug Skills.
• Software: Digital & analog electronic components selection and schematic implementation wif DxDesigner, ORCAD, ALTIUM, ALLEGRO Cadence, SPICE (PSPICE & LTSPICE & XSPICE), PADS, PCB routing & layout, C, Assembly, HTML, Visual Basic, UNIX, Windows
• Equipment - Logic Analyzer, Oscilloscope, Signal Generator, In-Circuit Emulator (ICE), Surface Mount Soldering

PROFESSIONAL EXPERIENCE:

Confidential

PROJECT CONTRACT ELECTRICAL ENGINEER

Responsibilities:

• AC POWER PERCENTAGE PHASE DIMMER CONTROL
• 120V/240V AC ZERO CROSSING
• AC 100V TO 650V TO DC, ISOLATED FLYBACK SWITCH POWER SUPPLY
• FLYBACK TRANSFORMER SELECTION, POWER RATING, AC Energy Power Factor Correction
• LTSPICE ANALOG SIMULATION, AND CADENCE ORCAD SCHEMATIC DESIGN ENVIRONMENT
• AC HIGH VOLTAGE SAFETY

Confidential, Washington and Oregon

Electronic System Integration PROTOTYPE Contract Engineer

Responsibilities:

• Design and PROTOTYPE UNMANED AIRCRAFT VECHICLE basic on 3-phase BLDC MOTOR
• Assistant and working wif software engineers, Design Motor Power Controller Board using TI Embedded Microcontroller F28M3x microcontrollers C2000 ARM Concerto.
• Design DC-DC Interleaved Power Boost System SYCHRONIZED BUCK BOOST, and 5000 Watts payload power output.
• Design Liquid Hydrogen Tank Controller and Low temperature and Tank monitoring.
• Design Constant Current Control, 10 Micro Amp for driving 20 K Degree Silicon Diodes. Analog circuitry is controlled wif ALTERA MAX V CPLD.
• Using LTspice for all analog circuitry simulation. Write VERILOG Embedded Control Code, Using MODELSIM for digital CPLD simulation.
• Using Texas Instrument Code Composer Studio write Embedded C code to bring up teh new designed board, verifying all design functions.
• Working in lab to debug, verify and modify all functions blocks, bring out teh new board.
• Working wif layout engineer to design 4 boards wif in-house.
• Using Mentor Graphic DX-DESIGNER to design all schematics, and REVIEW LAYOUT using EXPEDITION LAYOUT TOOL.
• All Component Selection, make sure to meet all criteria and requirements, fit board size, power current rating, etc.
• Write SPEC requirement and SPEC review. Write system block diagram.
• Thermal Analysis using Hyper THERM TOOL from Mentor Graphic Expedition Tool for a new 1500 Watts Power Board design
• Running Thermal Environmental Test from -30 C degree to +85 C degree for teh avionic unit functional test case.

Confidential, NORTH CAROLINA

Electrical Product Design Contract Engineer

Responsibilities:

• Investigate Aging Electronic Control System For Nuclear Energy
• Redesign Monitor System wif latest technology but consistence wif high liability
• ALTIUM TOOL SCHEMATIC DESIGN, define 4 LAYER BOARD layout detail, review GERBER files, analog electronics design for LED MONITOR BACKLIGHT DRIVER (Switch Power Supply and Pulse Width Modulation), ALTIUM LIBRARY 2D AND 3D COMPONENT model
• Documentation and analog simulation, working together wif mechanic engineer
• Over Current Safety and EMI Basic Filter for Input & Out Cable Harness
• Write Test Procedure, LAB DEBUG AND LAB TEST, Running High and Low Temperature Chamber Test.
• Design Documentation Specification, and analog simulation, LTSPICE, XSPICE.
• Investigate Legacy Obsolescence, figure out new solutions and design options.

Confidential, Detroit Metro, MI

Electrical Product Design Contract Engineer

Responsibilities:

• Defense System Electronic Control Improvement
• Electronic Component Obsolescence Investigation, proposal new design idea for future
• Investigated Legacy Design Cards, and consolidate into one LRM (Line Replace Module)
• Electronic Power (Heat Issue) Estimation, and 6U Card all electronic function FIT study (PCB area utilization, percent fit) wif new selected electronic components in a reasonable estimation, and generate a fairly close schematic and place all IC components onto 6 U Card to verify spreadsheet calculation utilization percent fit. Re-organize some functions away to reach 75% utilization.
• Analog Stimulation Op Amp Circuit Design
• Review Board Specification, make sure as same as legacy design but having some improvement among all analog and all digital electronic circuits

Confidential, Detroit Metro, MI

Electronic Design Contract Engineer

Responsibilities:

• L3 and Rockwell Collin Defense Motor Control Small Project, Aircraft Actuator (Linear Motion Forward and backward)
• BRUSHLESS DC MOTOR (3 Hall Sensors Inputs Feedback, 4 pole permanent rotor 3 phases) 4 QUADRANTS Control, active to slow down motion, operation all in 4 quadrants evenly, based on TI UC3625 UC2625 IC
• Define System Diagram, prepare and attend PDR and CDR, define input/out pin assignment, all requirement based on MIL standard, working closely wif mechanical engineers, listing all risk factors
• Prototype, Select and Purchase all electronic components, mostly using only all discrete logic 74-serises components, configured all possible logic wif all simple reliable electronic components, and all electronic component survive in harsh condition
• Commend Decode, 15 Voltage EM Brake Release, low voltage DOUBLER, and current limit during high voltage situation
• Design Schematic, use ALTIUM, making essential electronic component footprints, working closely wif an outsource layout company, define power space width and power trace requirement, apply low noise technique, orient (placement) certain critical component in certain way, define layer requirement (6 layers board), make sure PCB come out correctly. Generate BOM file, and some electronic circuit investigation wif partially ALITIUM XSPICE simulation in some circuit.
• Power Supply, Buck Down, Boost Invert, capacitor switching voltage DOUBLER, and linear regulator
• Speed Close Loop, PID Control, Analog Tachometer Indicator, Low Pass Filter, 300 RPM to 25000 RPM
• Half Bridge, High Current MOSFET, Low Side and High Side Current Sensing and its amplification, detect current direction and construct absolute current. Noise Filter, Low Noise measurement technique (down to 5 mV, Comparator Trip Point Precision down to 5 mV in a high noise motor running environment)
• Catching BRUSHLESS DC MOTOR regenerated energy, store them or de-energized them depending on input commands.
• Lightning protection, TVS (Transient voltage suppression, bi-direction) under guideline of MIL SPEC
• Implement Mechanical Electromagnetic Brake, Voltage Regulation and Current limit, Release Brake and Motor On Relationship Timing Control Sequence, and consider a series of emergence aviation condition, detect motor stalling condition.
• Temperature monitor (shut down motor when high temperature), make sure IC-sensor sensing heat correctly wif correct layout trace thermal coupling conducting TEMPeffectively, make sure simple approach but achieve all these requirements along wif contract layout engineer
• Design Common Mode Choke Filter and Differential Mode Choke Filter for EMI EMC, preventing noise going in and going out, in guideline of DO-160 document

Confidential, IRVINE, CA

Electronic Design Contract Engineer

Responsibilities:

• EMBRAER IIM and REU electronic Boards bring up complete functional test through and debug.
• EMI Noise deduction, and EMC compliance design issue, Investigate Power Line Filter Incident
• EMBRAER REU (REMODE ELECTRONIC UNIT) Schematic Review, FPGA VHDL coding SHARC DSP FPGA Interface, TEST BENCH. ACTEL ProASIC3E (A3PE3000FG484), ACTEL IP FIFO, F-RAM SPI interface, SERIAL MUX, and Manufacture Test, DX-DESIGNER Schematic (Select New Component and make New Symbol), Analog & Digital SIGNAL WRAP TEST, WATCHDOG TEST.
• Use in-circuit emulator (ICE) to debug, and to validate and to activate electronic signals and catch signals wave wif logic analyzers and oscilloscope, and TEMPeffectively performing troubleshooting techniques, Hands-on, Problem Root-Cause investigation and fixing it
• Use older version ACTEL Designer & SYNPLICITY under TCL commands to generate teh program bit CHECKSUM to compare a 5 years old checksum under old constrain (sdc file) and pin file (pdc file).
• Working wif oversea engineers to verify FPGA code modification under board level wif logic analyzer.
• Bombardier OpAmp and DC to DC Switch Power Supply Analog Simulation (LTSpice), Electronic Values Precise Adjustment
• Bombardier Project, Fly by wire electronic control, Parker hydraulics Electronic Control, Switch Power Supply, Responsible for Ultimate Back Up Board Unit Design, Op-Amps Gain and Scale, BJT, Power Supply Monitor, Use DX-Designer, Selection Tough Electronic Device wif high margin requirement. Mainly focus on parker hydraulics valves controlled by electronic (FLY-BY-WIRE), close DSP control current loop gain interface, small current drive in FORWARD and REVERSE direction, such as + 20 mA and - 20 mA.
• Embraer Project, Brushless 4 pole DC Motor Control, Circuit Review and Requirement Document Writing

Confidential, Albuquerque, NM

FPGA Design Contract Engineer

Responsibilities:

• Actuator Design, Brushless DC 8 pole Motor, Four Quadrant Control, Motor Current Source Feedback Control (Hall Sensor Current Pickup). State Machine Resolver Angle hysteresis Control for motor commutation purpose, Motor Bridge Gate Control Output and Motor Gate ON/OFF Delay Switching Timing Adding (preventing gate over heating).
• Resolver Base Sensing Feed Back for Brushless DC Motor Commutation, VHDL FPGA coding, VHDL Test Bench Writing, Automatic Error Flag Detection, Behavior Test Engine
• Multi-Channel Serial A/D FPGA Interface, Analog Settling Time Estimation (Specification Sheet and Spice simulation). Thermistor Current Source MUX Control and Temperature Reading. And DAC (D/A) output.
• Communication Channel Watchdog and clock watchdog, and discrete input debounce digital filtering.
• Serial & Parallel Interface, Impedance Match.
• ACTEL RTAX2000S 624 PIN FPGA (2 million gate Radiation Tolerant FPGA), Space Application

Confidential, Salt Lake City, UT

Contract Electrical Engineer

Responsibilities:

• RoHS Electronic Component Qualification, Exam electronic components not contain any harmful chemical amount, such as Lead, Mercury Cadmium, etc. following 2002/95/EC of teh European guide line
• Working wif other companies, gathering Electronic Component Data regarding RoHS of Compliance, and all legal documents preparing FDA auditing, such as IPC 1752 (Material Composition Declaration), and make sure IPC 1752 filled properly.
• Make sure new selected RoHS components are equivalent in form, fit, and function to old NON-RoHS components. Make sure new selected RoHS components will not has any manufacture issue problem, such as Reflow Temperature, Lead Plate Contact area, absolutely no any Whisker risk.

Confidential, Salt Lake City, UT

Contract Verification Validation Electrical Engineer

Responsibilities:

• Boeing 787 Honeywell Flight Unit Interface wif Confidential Unit, Electronic Motor Controller Spoiler and Brake System, FPGA Interface wif Power PC Microprocessor, Power Switched Circuitry, MOSFET Drivers Selection, and Component Derating Investigation, individual components Documentation, Test Box Debug, Total Harmonic Distortion Measure & Calculation, Bandwidth Calculation, crossing functional block among system boards, Generating Test Vector, Power Sequence, Reliability, Verification and Validation, Prepare FAA auditing.
• Boeing Electronic Spoiler Motor Control Project, ACTEL Anti-fuse PLD, FPGA VHDL 1 million Gate Functional Verification, Write VHDL Test Bench in Modelsim, Write Test Vectors, DO-254 Assurance, Write Verification Documents.
• Circuit Board Debug, Manchester Signal and Eye Pattern Measurement.

Confidential, BEAVERTON, OR

Electronic Design Engineer

Responsibilities:

• Design Ethernet Communication Motion Control Board (6 axis plus), XILINX ISE Design Environment, FPGA VERILOG Coding, Power QUICC II CPU Interface, SDRAM, Fast Clocking, FLASH Memory, Part Selection, Working wif PCB Router, ORCAD, BOM file, Write C Programming for hardware verification.
• Three Phases BLDC (Brushless) Motor Controller Design, FPGA Commutation Coding based on Hall Sensor Feedback Sensor, Speed Close Loop Control, XILINX FPGA CONTROL Innovation, Motor commutation sequence fire timing control, Pulse Width Modulation (PWM), variation speed & torque control, and All N Channel MOSFET DC MOTOR DRIVERS. Spice Simulation for component value selection. Working wif mechanical engineer related gear-ratio position feed-back and motor torque and electrical horse power conversion or estimation (in-oz/hp/watt), and working wif Layout Technician, assisted and guided Layout wif Layout Technician (8 layers), related to Signal Integrity in high issues.
• Prototyping Battery Power Three Phases BLDC Motor Control for Medtronic medical device, Close Loop, small PCB area (under 4.5 square inches) and 125 C Degree temperature environment, and, outputs 5000 RPM wif 10 oz-inches
• RoHS Electronic Component Qualification & Meet CE Standard and Meet medical safety standard, and able to handle high power requirements.

Confidential, Hillsboro, OR

Hardware Design & Test Verification

Responsibilities:

• Design & Circuit Review for NOKIA Communication Board (Power QUICC II, MPC8280, BDI 2000 JTAG Programming AMD FLASH, XILINX ALTERA FPGA & CPLD Program, Clock VCO/PLL and Optical Clock Recover System),
• Identify PCB Trace Cross Talk Problem & Signal Integrity for LVDS, Single End, clocks, add in proper termination for smooth signal rising & falling edge. Components Spec checking & value calculation. Applied High-speed board design techniques, VERILOG Coding For Board Debug & Test, and Review/Debug teh Design VERILOG CODE.

Confidential, Vancouver, WA

Hardware Test Engineer

Responsibilities:

• Design a voltage-controlled RELAY board for teh power distribution Margin Test
• Developing an automatic Test Procedure for a motor control electronic board for Heater, Fan, and Dryer
• Electrical Power Margin Test under high/low Temperature plus high/low frequency, & Value Calculation/Rework Justification.
• Signal Integrity Qualities between Board Interconnection (LVDS, SPI SERIES...), RoHS Component Selection

Confidential, Tualatin, OR

Electrical Engineer

Responsibilities:

• Worked in teh field of laser power & energy measurement
• Debug +/- 12 V in switching power circuitry, design 3.3V 5 V wif power regulator, battery supply measurement.
• Debugged real-time signals using a microprocessor-controlled digital/analog interface to logic analyzer, oscilloscope, signal generators (RS232 & I2C), trouble-shooting, and working wif outside contractors.
• Coding FPGA & PLD to extract high-speed analog pulses using ADC and DAC. Coding for data FIFO, Algorithm for finding data max/min peak value. Embedding FPGA Coding for Touching LED Screen Controller.
• Applied ALTERA Cyclone FPGA interface control signals for ISA bus, microprocessors (TI, Motorola MPC, Microchip), EEPROM, PC/104, programmable gain amplifiers, and power components, Performed cost estimation & Product Cost Reduction, and parts selection to reduce onboard analog & digital electronic components, and made design decisions, exploring a wide variety of options to meet project schedule.

Confidential, Salem, OR

DIRECT Electrical Engineer

Responsibilities:

• Worked on an aviation radar communication signal transponder
• Designed a serial/parallel interface using microprocessor control and FPGA/PLD, VHDL Coding.
• Worked wif aviation communication signals transmission and reception, AR INC 708, AR INC 429, AR INC 561

Confidential, Hillsboro, OR

DIRECT Electrical Engineer

Responsibilities:

• Engineered digital TV broadcast equipment (serial digital 4:2:2, AES audio)
• Used Altera FPGA, VERILOG CODING, design a serial digital TV analyzer to perform teh following: Reconstruct Video/Audio Signals into Component, RGB Video and AES Audio, Decode NTSC/PAL TV's digital control signals (CSYNC, PEDESTAL, CLAMP, etc.), Manchester Coding. Decode user menu and transparent video's control signals, Encode and redisplay video time code