Tool Board 1LC 12V fan question
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Question regarding 12v reg on the Tool Board.
I have a fan which is rated at 12V 1A, I was planning to run it of an external DC-DC converter, but when I ran it on a bench supply it pulls .6a at max RPM. So it looks like the rating is wrong. That's the part cooling fan, the hotend fan is < .1a -- so if I'm trusting the bench PSU -- I'm under 800ma. Is this OK to run directly of the toolboard? What should I look for if it starts pulling more current than toolboard likes? -
@kazolar ths issue will be that it will probably peak over 800mA on startup if it runs at 600mA normally.
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@T3P3Tony so how would this manifest with the tool board -- can I use it with the toolboard or no? I've tested it on the bench and it never peaks above even 650ma even at startup.
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A related question - I just ordered a 3.3V regulator for another project and noted that most of these surface mount regulators self limit on current and temperature. Would it be safe to assume that the 12V regulator in question would just limit the output current for the brief time required for the fan to start up (this shouldn't affect the fan itself in any way) or are there other considerations I am forgetting about ?
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@T3P3Tony i did a few more tests with the bench PSU, i current limited the fan, and it just drops RPM, doesn't do anything else. Even on powerup it ramps up with < 300 mA and maxes out at 600. I suspect with the amount of airflow it produces i will never run it at full throttle.
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@kazolar if it draws less than 600mA even on startup/max revs then it will be fine
