[Coco] OT: Assist request identifying a component on a PSU board of an Osborne 1b

[tonym]

Someone got back to me on vintage-computer.com and said it was a "line suppression capacitor" or "line filter capacitor,"
neither of which gives results at jdr, jameco, or mouser sites.

Pointed me to look here:

http://www.minuszerodegrees.net/failure.htm

to the third section, which is exactly what I have.

Got another 2 smaller ones on the same PSU board, which cracking in the cases, so I think I'll replace all three when I can find the parts.

Tony
tonym at compusource.net


---- Original Message ----
From: "Arthur Flexser" <flexser at fiu.edu>
Sent: 6/7/2014 9:05:17 PM
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Subject: Re: [Coco] OT: Assist request identifying a component on a PSU board of an Osborne 1b

It's a 0.1 microfarad capacitor.  (That's a mu, the Greek letter, not an
m, so it's microfarads, not millifarads.)  The other stuff I believe to
be ratings, like "not guaranteed over 250 volts AC" and "this capacitance
value holds for frequencies in the ballpark of 4.9 megahertz".

See http://www.electronics-tutorials.ws/capacitor/cap_3.html

Art


On Sat, Jun 7, 2014 at 8:01 PM, tonym <tonym at compusource.net> wrote:

> My Osborne 1b decided to let out the magic smoke a few weeks ago, so I ran
> out of smoke.
> Need to reload the smoke, but need to identify what a component is
>
> Pic of the part:
>
> https://pbs.twimg.com/media/BpkL9kqCYAEbmDz.jpg
>
> It's the component that says "0,1mF @X" on it.
> On the side is says (I think) f0=4,9mHz 250V ~MP - so it has a capacitance
> value and a frequency.
>
> This particular O1b is special to me, as I've had it since about 1989.
> Also happens to have the Osborne Compac pocket modem, has an OCC dd
> upgrade, and a Nuevo 80-column upgrade, and a later ROM I burned to EPROM.
>
> Tony
> tonym at compusource.net
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> http://five.pairlist.net/mailman/listinfo/coco
>

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