Electrical Engineer Design

Yingtao Yu

Nashua, NH Cell: 603-***-**** Email: ********@*****.*** Linkedin: www.linkedin.com/in/yingtaoyu

Firmware Engineer / Electrical Engineer

Professional Summary

* ***** ** ***** ****** experience and led 10 engineers

5 years of experience in electrical system design and production design

16 years of experience about micro-processor hardware design and firmware design

Excellent skills by using Altium Designer, Maxplus II, Quartus II, IAR / Keil Embedded Workbench IDE

Skills

* Electrical power system design * Circuit schematic design, PCB layout

* Micro-processor system design * digital and analog circuit design

* C language programming / Firmware design * AD / DA, comparator, sensor using

* IAR / Keil embedded workbench IDE * UART, I2C, 232/422, SPI and Bluetooth interfaces

Work History

Leader, Principal Electrical Engineer, 03/2009 to 03/2014

North China Research Institute of Electro-Optics - Beijing, China

Led power supply and control team (10 engineers) to design more than 10 laser power supply systems, guided and helped hardware / software engineers to troubleshoot and resolve problems, and made design and development plans for the whole team. Wrote design and technology document and communication protocols for power systems. Coordinated and worked closely with cross-functional teams.

Led the team to solve lots of problems to implement high power and high efficiency, EMC, compact structure, appearance and easy operation. As the result, the dimension was reduced to less than 50%.

Designed and developed power systems (output>100kW) with user-friendly interface, such as keyboard and LCD screen. They can be controlled through 422 or 485 interface on PC. More than 8 CC(constant current) power supply with micro-processor controlled and close-loop feedback. Moreover, real-time samples were implemented including voltage, current, temperature and humidity. Also, features of warning and protection were implemented.

Responsible for developing CW and QCW laser diode driver and designed for intelligent and miniaturized driver. Designed electric circuit with MCU (C8051F02x) and CPLD (EPM7000S family). C programming is my expertise.

Participated to design one-of-a-kind laser therapeutic instrument. Responsible for designing the control board which controlled 3 stepping motor and 3 lasers. The board included A/D and D/A, stepping motor control, LCD display, keyboard, and close-loop feedback. The instrument was used on the medical treatment of kidney stone.

Responsible for manufacturing process of one-of-a-kind laser range-finder, familiar with production manufacturing process. And the action range was from 0.6km to 10km.

Responsible for a lot of PCB design(2-6 layers), such as micro-processor control board, 24W power supply board.

Senior Electrical Rngineer, 12/2006 to 03/2009

North China Research Institute of Electro-Optics - Beijing, China

Responsible for developing laser diode driver with constant current and designing for intelligent and miniaturized driver. Some drivers' output (~4W) are low, and some drivers' output (~15kW) are high. A/D and D/A converters were used to acquire signal and control output, V/F converter, OP or photoelectric coupling were involved in isolation circuit.

Designed quasi-CW laser diode driver based on MCU and CPLD, implemented adjustable frequency, pulse width and amplitude value.

Designed electric circuit with MCU(C8051F02x) and CPLD(EPM7000S family).

C programming is my expertise. I developed all the MCU main program and sub-routines about A/D, D/A, UART, I2C, SPI, timers, display with LCD or VFD, and 4x5 keyboard.

Designed power supply with TI 3842/3843 and TI 25600, which input was 220V AC or 24V DC, and output was 5V or 12V, 24V, etc.

Electrical engineer, 07/1997 to 12/2006

North China Research Institute of Electro-Optics - Beijing, China

Participated in design of the lamp-pumped laser driver and LD driver

Responsible for developing MCU control board and protection circuit board.

Familiar with Philips Single-chip computer 80C51/80C552 and assembler language.

Received Master degree during this period.

Published a technical paper in technical journal “Laser & Infrared”.

Education

Master: Physical Electronics, 2004

China Academy of Electronics and information Technology.

Bachelor: Electronic Engineering, 1997

University of Electronic Science and Technology of China(UESTC).

Published Paper

Study on Fast Protection Function of Laser Diode Driver. December 2006. “Laser & Infrared”.

Visa status

L2. Employment Authorization Document (EAD). Can start to work immediately.

Others

President of CCSGN(Chinese Culture Society of Greater Nashua). Organize social gatherings, celebrations and special events for the local Chinese communities.

Member of Toastmaster club Tyngsborough MA.

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