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12v dc air pump 3
So, my dumb ass bought this air pump to use as an air assist for laser engraving. Didn’t read it well enough and when I got it in, it came with the cord having no plug in end, just open wires even though one of the pictures clearly shows an outlet plug. I have one of those universal power adapters with the different plug ends and such. Would I be able to splice it on to the pump and select 12v and be alright? Tia
That pump is going to draw over 2 amps at 12V. Can your adapter output enough current?
The 1st reply is right; your power supply needs to have matching voltage(or close) and *extra* amps,or VA, or watts, etc. is ok, not less. This is very rough theory but consider amps as motor torque and volt variation as rpm control until you understand deeper.
This assumes it is a dc voltage motor not relying on wave modification for regular function. Because we can’t see inside that, its iffy guessing. This could be 3v to 24v and ac or dc pretty easily.
Lol, I forgot to see what sub this is even in, it could be any one of a few subs from electronics, art, and various mechanical oriented subs too.
Poorly thought out changes in the way things display on R (for me) has made knowing the sub name before I reply much less likely. Adding a step to check for the sub name first every time is going to lead to forgetting of little brainstorms… I don’t like it. They “fixed”, but actually broke what wasn’t broke and didn’t need fixing… sigh.
Are there any marks near the power jack or terminals? ~ __ — ••• +/- & a ring etc?
With an unknown motor, start with dc always; low at 0v – 1.5vdc increasing by 1.5v until you reach peak rpm or suspected voltage range.
Never try ac first on an unknown. ACv cooks most DCv motors pretty fast. The motor may turn, but fight itself to reverse dirrection at 50hz/60hz (times per second). Basically heat will build even if runs with a physical push most times. If the motor stays cool, it’s usually fine.
AC motors can usually accept dc voltage even if they won’t run, because ac contains dc wave elements. Some ac motors may run better on dc; but again, a heat check is in order.
Check the nameplate on the pump. The picture of the one in the listing says its “220VAC” and “50Hz”. Even though the title says 12VDC. Not the first time I have had to do the homework for the seller, as they didn’t know what the voltage really was.