Heating Circuits

For those of you interested in heating circuits and thermochromic ink, below are some helpful circuit configurations. These circuits were taken from the Building Heat Controlling Circuit workshop at eTextile Summer Camp, KOBAKANT’s How to Get What You Want site, and the thermochromic ink workshop at eTextile Spring Break. Please see these links for a deeper explanation on different types of heating elements and power sources:

This uses a TIP 120 but you can also use a Mosfet IRLZ34N SPBF (they have the same pinout).

More on transistors here and here:

heating_circuit_1

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