Electrical

Solder Fan System

By Ngai To Lo in Hardware

January 1, 2017

Recently, I’ve been playing around with old computer power supplies. Naturally, that led me to other components of the computer, namely, the cooling fan. These fans are driven by a brushless DC motor system. This is to achieve a reduced sound and higher efficiency compared to a brushed DC motor system such as those you would see (or hear) in printers, air conditioners and RC cars. Computer fans can range from very simple to kind-of-simple with 2, 3, and 4 wires coming out of it.

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