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JohanJonker

Ultimaker original temperature problems

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Posted · Ultimaker original temperature problems

Hi Johan,

Almost overlooked this one..

Sorry about that, however, you're very close to a success I'll think..

By using a twisted shielded wire, this should work unless your fan radiate very high energy. If so, you might be forced to use both methods, screening your input signal (the very lo dc voltage from the cold junction amplifier located inside the extruder) and try to kill most of the radiation from your fan by decouple (lo pass filter) using an electrolyte capacitor (100 micro Farad 25VDC) as close as possible to the cooling fan.

It may also be possible to screen this amplifier using some special foil, that is only grounded to the upper end of the shielded wire routed from the main board.

The above capacitor is only 0.7 gram and measure (10X6) mm.

Good Luck.

Torgeir.

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