Jintao Chen's Home Page

         Electrical Engineer          “H1b visa holder, US person”


Electrical Engineer


Ex - SLB (previously Schlumberger Limited) Employee

Penn Engineering Aluminus

UIUC College of Engineering Aluminus

                Welcome to Jintao's home page.  I'm a current Electrical Engineer working at a Thermo Fisher Scientific manufacturing site in Marietta, Ohio. 

Professional Summary

 

• Electrical and Electronics Engineer with broad experience and universal skills in Medicare, Solar Energy, PV inverter, and Oil & Gas industries. Experience in several domains including: Power Supply Topologies, Battery Energy Storage System (BESS), Photovoltaic (PV) inverter, PCB design & troubleshoot, Testers, Component Engineering, Power Electronics, Motor Driver, Analog Design.   

 

Skills

 

• Proven experience with PCB design, validation, and component selection.

• Isolated power supply and power management design.  

• Knowledge with buck, boost converters and AC/DC rectifiers.

• Knowledge on ISO 9001 and ISO 13485 standards.

• Transformer (flyback) designing and manufacturing.

• Embedded systems networking (CAN, I2C, SPI…).

• USB Flash In-System-Programmer (ISP).

• Knowledge of batteries and power supply topologies.  

• Experience with BESS and PV units in room temperature.

• Experience with downhole logging, wireless, and telemetry tools at 175°C and 200°C.

• Experience in PCB layout tools (Cadence, ADS, Altium, Microwave Office..)

• Demonstrated ability to manage vendors, contract manufacturers and design firms.

• Cross-function collaboration with electrical, mechanical, and quality engineers.

• Proficiency using lab tools (LCR, oscilloscopes, function generators, spectrum analyzer, (de)solder station)

• Computer skills: Altium, SolidWorks, LabVIEW, MATLAB, Zuken E3, Spice, ADS, Cadence, Verilog.

• Engineering process flow platforms: SAP GUI, Oracle Agile PLM, Arena, GeMS 3D Experience, Airtable.

 

Experience

 

Electrical Engineer    |   Sungrow Power Supply Co., Ltd.                                     NOV 2023 - NOW

• Support Battery Energy Storage System (BESS) and photovoltaic inverter (PV) products warranty service. 

• Provide BESS and PV training to 200+ US customers with charges of $1500 per person per day.

• Work cross-functionally as both BESS technical writer and PV trainer.

• Analyze and process battery units’ data to determine extra-charging capacity and duration.

• Rephrase technical documents and compose Method of Procedure (MOP) for Sungrow PV inverters.

• Track Training Center, Repair Center, and Customer warranty service schedules with Airtable.

 

Electrical Engineer   |   Thermo Fisher Scientific (TFS)                                         JUL 2023 – NOV 2023

•  Sustain Thermo Fisher Scientific boards and schematics in Agile and Arena.

•  Repair detectors units and and re-assemble Bath tester, PCB tester units for TFS incubators.

•  Support TFS manufacturing on life-science lab and medical equipment (ISO 13485:2016).

•  Built and manufactured a tester for Steri-Cult incubators for board verification. 

•  Reworked and re-flashed 32 Philips LPC2000 micro-controller PCBs.

 

Electrical Engineer - Delivery   |   SLB (Schlumberger Limited)                       JAN 2022  - JUN 2023

 

PCB reworking, repairing, troubleshooting, and redesigning:

  •  Saved $386,000 company revenue by troubleshooting and reusing failing boards.

  •  Troubleshoot and repaired modular tester PCBs.

  •  Simulated new designs in LTspice and LABVIEW.

  •  Analyzed failure logs for 4 tools at 200°C high temp.

  •  Calibrated and validated 3 product tools ready for use.

  •  Generated PCB Inspection guideline with 200+ views.

  •  Connected with cross-functional teams on LTRs on new designs.

  •  Proposed standalone test for brushless DC motor driver.

  •  Verified circuit functionality at 175°C thermal cycles for 100 hours.

  •  Managed and supervised vendors on component harvesting for 23 boards.

 

Wireline logging tool repairing, troubleshooting, and redesigning:

  •  Redesigned and upgraded circuit assembly.

  •  Selected and heat-tested components for tools working at 175°C high temp.

  •  Generated embedded system troubleshooting document with 463 views.

  •  Redesigned a flyback transformer (new coil selection, winding calculation, loss calculation…)

  •  Troubleshoot PCBAs with module analysis (vibration frequency).

  •  Reworked PCBs following industry standards (IPC-A-610, RoHS compliance, etc..)

  •  Demonstrated ability to manage vendors for timely production.

  •  Design for manufacturing purposes.

 

Education

 

Master Degree | University of Pennsylvania | Philadelphia, PA                   MAY 2020 - DEC 2021  

                                                  

•  Major: Electrical Engineering

 

Bachelor Degree | Univ. of Illinois at Urbana Champaign | Urbana, IL       AUG 2015 - DEC 2019 

 

• Major 1: Electrical Engineering

 

• Major 2: Engineering Physics

 

Languages

 

• English • Japanese • Chinese (Mandarin)

 

Membership

• IEEE Graduate Student Member



Part-time design

It's a remote-control LED system I designed and soldered to place at home for illumination.  Added some fun features including but not limited to 12 brightness levels adjustment, remote control antenna transmitter and receiver modules, TTP-223B capacitive touch, DS 3231 extremely-accurate I2C crystal clock, humidity sensor, temperature sensor, etc...