• Designed prototypes and mass production lighting products including electrical circuit diagrams, schematic capture and PCB layout• Developed constant current power supplies using buck/boost technology• Designed circuits with over-current, over-voltage, and thermal protections• Designed customized fixtures with build-in motion sensors, optical sensors, capacitive sensor and dimming controller• Assembled and performed systematic test on prototypes and pre-production electrical products• Evaluated the performance and functionality of electronic and electrical components, such as third party LED driver s and miscellaneous lighting fixtures• Researched and analyzed existing and emerging solid state lighting technologies or electronic components to improve or enhance the performance of products• Ensured the product to meet CSA, UL, or other standards by conducting various tests• Provided pre- and post- production technical support to maintain appropriate level of product quality• Maintained and modified electrical systems of existing products through cost reduction efforts, engineering changes, configuration control, and quality enhancements• Create IES files from optical simulation, avoiding using large equipment• Provided technical assistance to retail agents and customers• Created bill of material, production documentation, and operations manuals as required

Assisted PhD student to develop pressure control system to improve technology for controlling system purgingCalibrated and characterized hydrogen sensors, used them to monitor hydrogen concentration, and -analyzed the collected data for hydrogen leaks and failure detectionCalibrated and characterized pressure transmitters, proportional solenoid valves, and pressure switch to be used in pressure control systemSetup, maintained, and modified electrical and plumbing equipment to make them functioning for different purpose of testing

Measured and verified electrical and mechanical system parameters of the NXT motor to developed the simulation model for both speed and position control using MatlabDeveloped both speed and position control systems using Matlab Simulink to control a one degree-of-freedom robot arm and an elevator model from LEGO Mindstorms Analyzed the performance of the robot arm position control system in time domainDesigned PID controller, phase lead controller, and phase lag controller in both time domain and frequency domainDid state variable analysis on decomposition approach, controllability, observability, and pole placement for the control system to be used as an example in the book