5/6/2015 TEB Update

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These last two weeks, I have been bogged down by finals which hasn’t left me much time to work on the new for the next iteration of the TEB. However, I was able to finish the electrical schematic for Rev 2.1, which you can see below. The circuit will be much simpler than the previous iteration as I was able to eliminate many components with this new design. Below are the changes.

  1. No need to boost the voltage so I got rid of the voltage regulator chip and the accompanying circuitry
  2. Transistor configuration into a single FET array chip -http://www.diodes.com/datasheets/DMHC3025LSD.pdf
  3. Smaller Lithium battery will be used, haven’t decided on the form, but am looking at lithium coin cells
  4. Different battery charging management IC  http://ww1.microchip.com/downloads/en/DeviceDoc/22036b.pdf
  5. Atmel chip microprocessor will be used instead of the whole Sparkfun Pro Micro (have not implemented in schematic yet)
  6. Battery monitor IC to indicate when battery is low

Note: This is only the first draft. I still need to run a design analysis and check for errors.

T

 

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About sylvestre

My name is Jason Sylvestre and I am currently a freshman studying Electrical Engineering here at UW-Madison.  While in high school, I was very involved in search and rescue robotics research and competed at the Intel Science and Engineering Fair where I received a third place medal out of nearly 1800 students from over 70 different countries.  This passion I developed for circuitry and EE brought me to the Living Environments Laboratory where I will be working under the supervision of Professor Kevin Ponto to build a thermoelectric bracelet that can be used for personal thermal comfort.