Subject: Re: sonic microSCSI
To: Simon Burge <simonb@wasabisystems.com>
From: Eyal Lebedinsky <eyal@eyal.emu.id.au>
List: port-pc532
Date: 02/28/2004 19:37:30
Simon Burge wrote:
> Hi Chuck,
>
> Chuck Silvers wrote:
>
> [ moving your last question up to the top ]
>
>
>>do we know anyone that has one of the cabletron dongles that the existing
>>"se" driver supports?
>
>
> That would be me! Using ttcp to measure, it's good for about 250kB/sec
> each way. Not earth shattering, but far faster than 38.4k ppp :-)
>
>
>>a while back I wanted to get all the scsi ethernet dongles working,
>>but then I got busy and didn't get back to it. but anyway...
>>
>>I have one of these sonic dongles as well, but I didn't have a power
>>supply to go with it. do you know what p/s specs are needed for this?
>>a friend of mine played with it a bit and we tried it with something
>>he thought should work, but we eventually decided that it was just dead.
>
>
> The cabletron pulls in 12V. I guess if there's a 5V regulator inside
> it's going to need slightly more than 5V in as there's a voltage drop on
> the regulator. I just feed the yellow and black wires from a disk drive
> power cable into the right plug so I don't need external power.
I opened the case and identified the power module, it is:
SL05S09-1SA
http://www.unicomelectronic.com/products/dcdc.html
SL SERIES SIP PACKAGE DC-DC CONVERTER
There is a pdf there and it gives:
Input voltage 5 VDC
Output voltage 12 VDC
Output Current 200 mA (max)
Input current 60 mA (no load)
Input current 580 mA (full load)
So now we know.
Does a standard AT power supply allow 580mA off a 4-pin plug? Does not
sound like much to me.
--
Eyal Lebedinsky (eyal@eyal.emu.id.au) <http://samba.org/eyal/>