How to make a Thermoelectric Flashlight

This is a tutorial on how to make a thermoelectric flashlight. You'll never need to worry about having batteries for your flashlight again. FAQ: 1. Q: Where do I connected the red and black wires from a thermoelectric module? A: The red wire is connected to VCC on the circuit layout at 10:20 in the video. 2. Q: My MOSFETs keep dying. How can I prevent that? A: Avoid powering the circuit without an LED or load. If the input voltage is too high (~500mV) under no load conditions, the output voltage (MOSFET Vds) might go too and damage the MOSFET. How to make the LTC3108 Energy Harvester:    • How to make the LTC3108 Energy Harvester   Thermoelectricity: http://science.howstuffworks.com/ther... Ann Makosinski's Hollow Flashlight:    • The Hollow (Thermoelectric) Flashlight - G...   Ann Makosinski's Google Science Fair Project page: https://www.googlesciencefair.com/en/... LTC3108: http://cds.linear.com/docs/en/datashe... How a Joule Thief works:    • How a Joule Thief Works   Buy ALD212900PAL: http://www.mouser.com/ProductDetail/A... Buy a similar Common Mode Choke: http://www.mouser.com/ProductDetail/K... Buy the exact Common Mode Choke: http://www.mouser.com/ProductDetail/K...