From: Humphreys, David (URB) (david.humphreys_at_honeywell.com)
Date: Wed Sep 04 2002 - 05:42:45 PDT
I think that what you have there, Frank, is a non-flammable resistor.
It is designed to not burn under fault conditions.
You could also have a fusible resistor but these have a white body generally, and non-flamable are green so I would
guess its a NF resistor.
It is *VERY* important to replace it with the correct part. A normal resistor won't work. Well, it will operate but you
run the risk of fire as you have removed the protection.
51R = 51 ohms
J = +/- 5% tolerance
These are commonly employed on AC adaptors like you have described.
They are usually connected in series with the input.
Is this where it is connected?
Good Luck and be careful!
PCBman
> -----Original Message-----
> From: Frank Gruendel [mailto:fg2_at_pda-soft.de]
> Sent: Tuesday, September 03, 2002 3:42 PM
> To: newtontalk_at_newtontalk.net
> Subject: [NTLK] Looking for spec of (probably) a fuse
>
>
>
> Hi folks,
>
> may I tap the brains of those of you who know something
> about hardware? I am currently fixing an ac adapter. There
> is a component I bet is a fuse which is dead, but I seem to
> be unable to find out which value this thing has. It is
> green,
> about 11 millimeters long and 4.8 millimeters in diameter.
> It is labeled "51RJ". The manufacturer's label is a circle
> with a
> horizontal line through the middle and two small vertical
> lines
> from the top and the bottom. A bit like that:
>
> /---,---\
> -|--------|-
> \---'---/
>
> Considering the adapter rating it would make sense if it was
> a
> 50 mA fuse. Maybe 51 means "5 and one time 0").
> Does anyone know if it is a fuse (it must be) and which
> value
> it has mA- and speedwise? Any pointers much appreciated.
> Please cc to my address as I'm on the digest.
>
> Thanks a lot
>
> Frank
>
> -- Newton Hardware and Software at http://www.pda-soft.de
>
>
> --
> Read the List FAQ/Etiquette: http://www.newtontalk.net/faq.html
> Read the Newton FAQ: http://www.chuma.org/newton/faq/
> This is the NewtonTalk mailing list - http://www.newtontalk.net/
>
-- Read the List FAQ/Etiquette: http://www.newtontalk.net/faq.html Read the Newton FAQ: http://www.chuma.org/newton/faq/ This is the NewtonTalk mailing list - http://www.newtontalk.net/
This archive was generated by hypermail 2.1.5 : Mon May 26 2003 - 12:59:20 PDT