>Message: 7 >Date: Tue, 06 Jun 2023 02:41:56 +0000 >From: John Floren <j...@jfloren.net> >Subject: [cctalk] Re: Getting floppy images to/from real floppy disks. >To: "General Discussion: On-Topic and Off-Topic Posts" > <cctalk@classiccmp.org> > >It's funny that luggable power packs come up here as I'm trying to revive my >Otrona >Attache... The power supply does nothing on AC input, even after a >recapping, so I >thought I'd investigate the "DC Power Option" described in >the manual. Unfortunately I >can't find any record that Otrona ever actually >*sold* a "DC Power Option", which >would plug into an unpopulated 6-pin Molex >connector on the back of the device. >Interestingly, the header inside the >power supply labeled "DC Option" is a 7-pin >header, so I'm not sure which pin >was "optional" for the external connector! > >I'd just replace the power supply wholesale with a little ATX supply or >something, but >the machine needs 5V, 12V, -12V, and 15V; the latter is used >to power the CRT and >represents a real challenge! I've yet to find anything >that outputs all 4 levels at a >reasonable price. > >john >
I have an Otrona Attache 8:16 with the DC option, so it was sold. (I used both the Osborne and the Otrona in Peru, so having a battery option was an advantage.) However, my Attache has the disk drives that both spin up at the same time, and the DC option does not supply enough power to properly spin both drives, so the computer will reboot if you try to read or write anything to disk while on DC! I’m traveling now, but will open up my Attache and take some pictures for you in a couple of weeks. Bob
