Mastersport 386SX

From: Tothwolf <tothwolf_at_concentric.net>
Date: Thu Jan 24 16:30:09 2002

On Thu, 24 Jan 2002, Dan Veeneman wrote:
> At 02:12 PM 1/24/02 -0500, you wrote:
> >On Thu, 24 Jan 2002, Fred Cisin (XenoSoft) wrote:
> >
> > > Zip drives use one that is 5 VDC. Do they really need 5?
> >
> >IIRC, the Zip-Drive 'wall wart' is actually a complete regulated power
> >supply. So to operate the logic, it DOES need to be 5VDC.
>
> All of this is off-topic, but I've got three different types of Iomega
> ZIP drive "wall warts" here (all voltages unloaded, measured from
> my Fluke 8020A):
>
> 57DR-5-1500(A) outputs 5.21 volts DC
> 48DR-5-1000 outputs 5.11 VDC
> 91-56403 outputs 5.15 VDC
>
> Much closer to spec than most wall warts.

This is because these are true power supplies and not a wall-wart.

Some of the early zip drive power supplies are linear and use a standard
LM7805. These look like wall-warts since they still have a large
transformer in them. The later generation power supplies are very small
switching power supplies.

-Toth
Received on Thu Jan 24 2002 - 16:30:09 GMT