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NICHOLAS FREYBLER
Internship Field: Electrical Engineering, Computer Science, Lighting Technology
Major/Minor: Electrical Engineering, German Language and Culture
Host: SUMOLIGHT GmbH
Location: Berlin
Duration: 2 months in the summer of 2015
Description: "I worked on several tasks:
Developed and analytically solved equations characterizing the current and voltage in a Buck Converter, designed to power 108 LEDs.
Simulated several different Buck Converters in LTspice.
Developed increasingly more sophisticated Digital Control Circuits, which were designed to model the actions of a real world micro-controller as accurately as possible, in LTspice.
Used MATLAB to: mathematically confirm results of LTspice simulations; numerically create large sets of data which would then be analyzed and used to simplify unnecessarily complicated equations; clearly graph the effects of component/input signal variance on the desired output of the Buck Converter.
Began to research for the development of a PFC Boost Converter, which would use Phase Lock Loop (PLL)-based Interleaving. Created a bare-bones control circuit in LTspice to assist fellow intern and adviser."
Comments: "Although the skills and topics were not related to my personal concentration within Electrical Engineering, it did expose me to Electrical Engineering as a profession rather than just a field of study."
For further information, please write to nickfrey@stanford.edu