Interesting results: When I plugged the monitor into the box, the LEDs lit up dimly. Plugging in a keyboard or a mouse must draw too much power becuase they go out again, and in any case, the device is getting a little power but I guess not enough to power the switching.
The only information for the power I have is what I put in my original message, and I've googled all over the place for pinouts or even a manual for it... this apparently is an old or rare model or something. It's an Apex Outlook EL-40LC which handles 2 PS2 ports, one VGA port, and one 9-pin port. However, like I said, it was a really good deal, so all I have to lose is a cheap KVM switch that does no good without a power supply anyway! I have dabbled in electrical engineering type stuff before, but I'm far from any kind of an expert, probably knowing exactly enough to fry myself and the switch quickly. But I love making stuff like this, so if anyone wants to help me out with a fun little side project, and I'll take Brian McCullogh up on his offer for the laptop power supply! I'll bring the toy to this month's meeting and we can have a look at it. Thanks for the interest! -Jeff On Thu, 2004-04-01 at 23:54, Brian A. Henning wrote: > Hiho, > DIN-5 plugs (the AT-keyboard style) are not difficult to come by. Is > there any indication which pins of the socket are for which voltages? > Presumably the three positive voltages are on three of the pins, and one or > both of the remaining two are ground.. If you have an actual pinout for > that connector, it wouldn't be terribly difficult to either cannibalize an > old laptop power brick (back in the days when the laptop bricks put out > separate +5 and +12 voltages, if you can come up with one) or simply > construct a power supply from scratch (I'm sure I'm not the only trilugger > with electrical circuits experience). > > The suggestion of parasitic power (aka. not needing the power > supply---drawing power from the computer's ports) I know is true for Belkin > brand devices, as I have one and have used others.. However, my instinct is > to suspect that since it requires the two separate potentials, it's not > going to be able to power itself from the computer's ports (only the RS-232 > port, that I know of, even sports 12v potentials, and newer forms of that > standard operate at only 5 volts). Worth a shot, though. > > Good luck, and let me know if you would like some help with the scratchbuilt > power supply idea. > > Cheers, > ~Brian > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > > Behalf Of Jeff Tickle > > Sent: Thursday, April 01, 2004 7:10 PM > > To: [EMAIL PROTECTED] > > Subject: [TriLUG] Power Supply for Apex KVM switch > > > > > > Howdy! I'm not sure if this is a little off-topic, but it has to do > > with KVM switching my linux boxes, so it can't be that bad. > > > > I must first confess to my sins... I was a stupid ebayer. Saw a really > > good deal on something I semi-needed (can get rid of an extra monitor > > this way!) and purchased it late at night... and somehow missed the > > notice that it comes with everything but a power adapter, and that's why > > it's so cheap. > > > > So I have a nice, cheap, supposedly working solid-state KVM switch with > > nothing to power it. I'm hoping maybe someone here can direct me to a > > power supply for this thing... if not the exact supply, then maybe a > > starting place for this sort of thing? (Google was little help.) The > > power connector on this device looks like the old larger round keyboard > > plugs (AT, I guess you'd call it?). The label on the back has this > > helpful information: > > > > INPUT: > > +5V @ 275mA > > +12V @ 150mA > > +5V @ 100mA > > > > Any help is appreciated!! > > > > -Jeff > > -- > > Jeff Tickle <[EMAIL PROTECTED]> > > JTSoft.net > > > > -- > > TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug > > TriLUG Organizational FAQ : http://trilug.org/faq/ > > TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ > > TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc -- Jeff Tickle <[EMAIL PROTECTED]> JTSoft.net -- TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug TriLUG Organizational FAQ : http://trilug.org/faq/ TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc
