James N. Sears

400 N. 4th St. #817
St. Louis MO 63102

Electronics and Computers

Current and past projects and relevant skills

Chua's Oscillator - a system of three differential equations realized in analog form to generate a chaotic ouput for experimental use in creative musical applications (includes audio and video samples).



Class D (PWM) Bass Guitar Amplifier - ECE 345 (now ECE 445) Senior Design Laboratory project at the University of Illinois Urbana-Champaign. Acheiving output levels of 140W RMS into a 2 ohm load and a frequency response of less than 20Hz to 5kHz (+/- 3dB), the project was selected as the Spring 2002 Instructors Award Winner for best project of the semester.


Business Software - A point-of-sale system, plus account management and invoicing, reporting, maintenance logging, employee clock, and purchase order system, reliably handling over $1M in annual sales for Organic Resource Management, Inc. in Florissant, MO for over two years.


Variable Voltage Output Switching Buck Regulator - Designed on a 2-layer PCB less than 2.5" (63.5mm) square to regulate 12 or 24VDC from an automotive-type charging system down to a current-limited voltage-variable output of about 3V at currents of around 3A in order to operate an auxilliary electric fuel pump at a reduced output level.


Microcontroller-based temperature logging system - 5 channel microcontroller-based temperature logging system, designed using surface mount components to fit on a 2 layer PCB less than 2.5" (63.5mm) square.



Relevant Skills in Electronics and Computers