Feb 16th 2014

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Dancing Ferrofluid first test

First attempt, This is using a coil scavenged from an old hard drive. The real project I am working on isn't really about driving it with audio but I just wanted to see how it worked out.

Fed with half wave rectified audio. The coil impedance measured at approximately 6 ohms which was convenient as it's not that far from a loudspeaker coil.

Running it with a 60W amp meant that I only had about 30 seconds before the coil started to overheat. Quite fun though I might try a bigger coil or an array of more small coils.

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