Fuse or fusible resistor?
DaveC
Physically similar to a 1/4 W resistor, color light green. Marked "IE7A" or
"1E7A".
Google returns slim results, none promising.
What type is this?
Thanks,
Dave
Salmon Egg
<0001HW.C84C25A9...@news.eternal-september.org>,
DaveC <inv...@invalid.net> wrote:
USE COMPLETE SENTENCES!
--
An old man would be better off never having been born.
David Nebenzahl
> In article
> <0001HW.C84C25A9...@news.eternal-september.org>, DaveC
> <inv...@invalid.net> wrote:
>
>> Used in the battery (-) lead of a handheld scope. Schematics unpublished.
>>
>> Physically similar to a 1/4 W resistor, color light green. Marked "IE7A" or
>> "1E7A".
>>
>> Google returns slim results, none promising.
>>
>> What type is this?
>
> USE COMPLETE SENTENCES!
A grammar nanny, eh?
You must be a big hit at parties ...
--
The fashion in killing has an insouciant, flirty style this spring,
with the flaunting of well-defined muscle, wrapped in flags.
- Comment from an article on Antiwar.com (http://antiwar.com)
John Larkin
<Salm...@sbcglobal.net> wrote:
>In article
><0001HW.C84C25A9...@news.eternal-september.org>,
> DaveC <inv...@invalid.net> wrote:
>
>> Used in the battery (-) lead of a handheld scope. Schematics unpublished.
>>
>> Physically similar to a 1/4 W resistor, color light green. Marked "IE7A" or
>> "1E7A".
>>
>> Google returns slim results, none promising.
>>
>> What type is this?
>>
>> Thanks,
>> Dave
>
>USE COMPLETE SENTENCES!
Idiot
^^^^^ Not a complete sentence
^^^^^^^^^^^^^^^^^^^^^^^ Not a complete sentence
Etc.
John
Pieyed Piper
wrote:
>In article
><0001HW.C84C25A9...@news.eternal-september.org>,
> DaveC <inv...@invalid.net> wrote:
>
>> Used in the battery (-) lead of a handheld scope. Schematics unpublished.
>>
>> Physically similar to a 1/4 W resistor, color light green. Marked "IE7A" or
>> "1E7A".
>>
>> Google returns slim results, none promising.
>>
>> What type is this?
>>
>> Thanks,
>> Dave
>
>USE COMPLETE SENTENCES!
Jeez. Yer an idiot.
Pieyed Piper
I should have figured that not a goddamned soul actually tried to answer
the question.
It sounds like a 'soft-fuze'. That resets itself after tripping.
There is also a similar device used in hair dryer circuitry.
Phil Allison
"DaveC" <
> Used in the battery (-) lead of a handheld scope. Schematics unpublished.
>
> Physically similar to a 1/4 W resistor, color light green. Marked "IE7A"
> or
> "1E7A".
** Sounds like a Pico Fuse:
http://media.digikey.com/photos/Littelfuse%20Photos/PICO%20II%20R251%20SERIES.jpg
Come in fast and very fast ratings with amps rated from 1A to about 15A.
When they blow, you need a soldering iron to replace them.
There are various Asians clones too.
..... Phil
Phil Allison
"DaveC"
> Physically similar to a 1/4 W resistor, color light green. Marked "IE7A"
> or
> "1E7A".
** Sure that is not the other way around ?
Pico Fuse would use " 7A LE " as a the marking for a 7 amp fuse.
.... Phil
N_Cook
news:0001HW.C84C25A9...@news.eternal-september.org...
I take it , that its blown and I also take it that its not charred (fusible
R don't char or even discolour AFAIK)
Desolder it and scrape an axial line along its length . Then DVM resistance
check from either end. If a fusible resistor then maximum R read is what its
value was near enough.
FR breaks are usually to one end, normal R usually in the middle.
Although green is often axial inductor.
--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://diverse.4mg.com/index.htm
Kevin McMurtrie
Littlefuse makes green resistor-shaped fuses. Their logo is an 'L'
wrapped under an 'F' so their 'LF' could look like 'IE' on a worn part.
http://www.littelfuse.com/data/en/Data_Sheets/Littelfuse_251_253.pdf
--
I won't see Google Groups replies because I must filter them as spam
DaveC
> wrapped under an 'F' so their 'LF' could look like 'IE' on a worn part.
>
> http://www.littelfuse.com/data/en/Data_Sheets/Littelfuse_251_253.pdf
Thanks, Kevin.
They way Littelfuse uses a stylized "LF", it could easily be mistaken for
"1E" or "lE".
Now to get one...
Thanks again,
Dave
DaveC
> R don't char or even discolour AFAIK)
No, I don't have one. I threw it out with the old battery. :-(
Someone on-line volunteered to describe the one from his scope.
I'll not ask him to do a post-mortem on a working fuse. ;-)
Thanks,
Dave
Robert Baer
Ratings of these beasts in equipment is almost NEVER disclosed - like
a company secret more precious than any other secret they have.
Measure current draw and see what the maximum is during any
operations, double that for a guide in choosing "first guess" replacement.
Pieyed Piper
wrote:
The axial leaded jobs I have seen in hair dryers are high current jobs
with reed switches inside them. Not the soft break jobs.
The biggest soft device I recall was 3 Amps.
Salmon Egg
Pieyed Piper <pieye...@thebongshopattheendoftheuniverse.org> wrote:
> I should have figured that not a goddamned soul actually tried to answer
> the question.
Could that be because no one knew what tghe question was?
Idiot
Pieyed Piper
wrote:
>In article <3upd265udo81jog5t...@4ax.com>,
> Pieyed Piper <pieye...@thebongshopattheendoftheuniverse.org> wrote:
>
>> I should have figured that not a goddamned soul actually tried to answer
>> the question.
>
>Could that be because no one knew what tghe question was?
If you cannot glean the question from that, you are not only too
goddamned retarded to be answering it, you are too goddamned retarded to
be in the group at all, much less being here, acting like you have half a
fucking brain.
>
>Idiot
Nice sig, dumbfuck. It fits you perfectly.
Fester Bestertester
> a company secret more precious than any other secret they have.
And that's why markings are so important. You can circumvent any need to
measure.
Lostgallifreyan
news:0001HW.C84CC1A6...@news.eternal-september.org:
Oh man, has science really come to this? >:)
Arfa Daily
"Salmon Egg" <Salm...@sbcglobal.net> wrote in message
news:SalmonEgg-E4DEA...@news60.forteinc.com...
They are complete s
Just not ones that you
What I am writing, are incomplete sen
And don't
We don't like that on sci
Arf
Michael A. Terrell
<http://www.littelfuse.com/data/en/Product_Catalogs/Chapter10SurfaceMountFuses.pdf>
and several other fuse manufacturers list E as .375A. If you read the
data sheets, you should be able to determine what family you need.
--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.
Tim Williams
>
> Physically similar to a 1/4 W resistor, color light green. Marked "IE7A" or
> "1E7A".
Obviously, it's 10,000,000 amperes ;^)
Tim
--
Deep Friar: a very philosophical monk.
Website: http://webpages.charter.net/dawill/tmoranwms
Jamie
> "DaveC" <inv...@invalid.net> wrote in message news:0001HW.C84C25A9...@news.eternal-september.org...
>
>>Used in the battery (-) lead of a handheld scope. Schematics unpublished.
>>
>>Physically similar to a 1/4 W resistor, color light green. Marked "IE7A" or
>>"1E7A".
>
>
> Obviously, it's 10,000,000 amperes ;^)
>
> Tim
>
good one :)
James Sweet
>
> I take it , that its blown and I also take it that its not charred (fusible
> R don't char or even discolour AFAIK)
> Desolder it and scrape an axial line along its length . Then DVM resistance
> check from either end. If a fusible resistor then maximum R read is what its
> value was near enough.
> FR breaks are usually to one end, normal R usually in the middle.
> Although green is often axial inductor.
>
> --
>
They won't catch fire but I have seen them char slightly. It's also
common for them to crack or blow out a small chip of ceramic if
something shorts and exposes them directly to the line voltage.
fly on the wall
Surely (s)he can MEASURE the one (s)he has?