I've got a project I've been wanting to try for quite some time now, and one of the things holding me back was a 24VDC supply. Coincidentally, I just had a laser printer poop out on me, and when I took it all apart to scavenge parts and recycle, I found this:
It says it provides almost 4A of 24VDC power, which is double what I was planning on buying, so it would give me room to expand. Obviously I'd need to put this into an enclosure for safety, but assuming that gets done right, any reason not to use this as my 24VDC supply?
Also, I checked the wires on the 9-wire bundle coming out of the board for voltage with the board hot and continuity with it dead, and found these readings, relative to chassis ground:
white: 24.3VDC
black: 24.3VDC
black: continuity to ground
black: continuity to ground
black: continuity to ground
black: continuity to ground
black: 5.2VDC
black: 5.2VDC
black: 23.5VDC
Any guesses as to why there would be so many wires with apparently redundant signals? Distributing amp load over more wires to avoid larger gauge wire? Separate outputs, each with its own regulator and max amp load? Any guess as to what I can reasonably expect to safely draw out of any individual one of those lines?
Finally, any idea why there would be two lines just over 24V and one line just under 24V? You'd expect all of the nominal 24V lines to be at the same actual voltage. I rechecked all three of those measurements several times, and the difference is quite consistent.
Thanks in advance for any feedback. I'm really excited to maybe/hopefully have a beast of a power supply for free!
It says it provides almost 4A of 24VDC power, which is double what I was planning on buying, so it would give me room to expand. Obviously I'd need to put this into an enclosure for safety, but assuming that gets done right, any reason not to use this as my 24VDC supply?
Also, I checked the wires on the 9-wire bundle coming out of the board for voltage with the board hot and continuity with it dead, and found these readings, relative to chassis ground:
white: 24.3VDC
black: 24.3VDC
black: continuity to ground
black: continuity to ground
black: continuity to ground
black: continuity to ground
black: 5.2VDC
black: 5.2VDC
black: 23.5VDC
Any guesses as to why there would be so many wires with apparently redundant signals? Distributing amp load over more wires to avoid larger gauge wire? Separate outputs, each with its own regulator and max amp load? Any guess as to what I can reasonably expect to safely draw out of any individual one of those lines?
Finally, any idea why there would be two lines just over 24V and one line just under 24V? You'd expect all of the nominal 24V lines to be at the same actual voltage. I rechecked all three of those measurements several times, and the difference is quite consistent.
Thanks in advance for any feedback. I'm really excited to maybe/hopefully have a beast of a power supply for free!