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PWM Fan Controller

I designed, coded, tested and completed building a PWM fan controller to reduce the screaming off the Delta inside my Conroe box.

This is the full setup, with the breadboarded circuit connected to the front faceplate:

The full setup

The circuit in a bit more detail:

Breadboard circuit

Notice the minimum setting on the knob. The DMM on the left is showing the dutycycle percentage!

Minimum dutycycle

The maximum setting, notice how the pulse is on longer!

Maximum dutycycle

Click here to read more on this project!

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