Hi there everyone,
I salveged a couple of these from an old Samsung laser printer:
I suppose it's an electromagnet and it should be as easy as supplying the right voltage over both the wires to "turn it on". However I tried up to 18 volts but nothing happened.
Anybody knows how much volts I should supply? Or is it something completely different?
Here's some more pictures:
Any help is greatly appreciated!
Thanks,
Erik
Looks like an electromagnet
Looks like an electromagnet indeed. Can you measure the resistance of the coil? That should give you some idea about the current that it draws…
RE
Most (not all) copiers and printers use 5v and 24v dc to power their paper handling guts. The only exceptions are the image formation parts - drum, charge, fuser, etc which are typically various AC voltages.
That magnet is used like a solenoid to control paper feed by locking on a pulley step on a powered shaft. Let me explain that better, a shaft is driven, so to time the operation a step is on a pulley for this magnet to actuate an arm to catch the step. These are very common on the process of seperating paper fed into a doc feeder. A timing is required to feed only one page of paper at a time. So they use a step for this unit to hook an arm on to so that the timing of paper feed is maintained. (I kind of over explained that, hope it makes sense!)
Thanks for the quick
Thanks for the quick replies!
The blurry shaft to the left of the coil on the first picture is actually a spring (I love my new Galaxy, but the Lumia definitely has a better lens :-))
So I shall try and feed it with 24 volts, to see if it’s still working. I measured the resistance, multimeter showed 122 ohm, which means I need to use a power unit capable of supplying at least 200 mA IIRC.
I shall set forth and do so. I’ll post my findings in this thread.
Thanks once more. Really appreciating your time and efforts!
