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Discussion Groups | Piclist | resistors
A discussion group for the PICMicro microcontroller. Also called the Microchip PIC, this list is dedicated to the use and abuse of this fine, simple, microcontroller. Close to topic posts are welcome, ie. general electronics.
resistors - Lez - Apr 21 15:01:21 2006
DoH!
I'm telling you my head hurts......
I was trying to work out the value of a thermistor to order a spare,
its got a resistor in parallel with it, of (according to meter) 17.2k
(17200ohms)
At 0degress C its reading (therm+resistor combination) is 4237 ohms
At 100 degrees C its reading 346 ohms
Everytime I work it out I get a different reading when I double check
it by doinfthe same sum backwards.
I tried an online one but it crashed, gave a reading with an exponent (E+3 etc)
or kept saying 1856 ohms, which it cant be...
I had not realised how bad I had got at maths having a pc etc always by my side!
--
Lez
- Looking for early starwars (episode 4, original starwars)
recordings, even pirate
-
- I dont need your originals just some information about running time
- and scene cut points
-
-
- also looking for a car, silver or white, 4 doors -
- diesel with a bosch pump, abs and pas -
- aircon would be nice, and not a ford -
to unsubscribe, go to http://www.yahoogroups.com and follow the instructions
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
I'm telling you my head hurts......
I was trying to work out the value of a thermistor to order a spare,
its got a resistor in parallel with it, of (according to meter) 17.2k
(17200ohms)
At 0degress C its reading (therm+resistor combination) is 4237 ohms
At 100 degrees C its reading 346 ohms
Everytime I work it out I get a different reading when I double check
it by doinfthe same sum backwards.
I tried an online one but it crashed, gave a reading with an exponent (E+3 etc)
or kept saying 1856 ohms, which it cant be...
I had not realised how bad I had got at maths having a pc etc always by my side!
--
Lez
- Looking for early starwars (episode 4, original starwars)
recordings, even pirate
-
- I dont need your originals just some information about running time
- and scene cut points
-
-
- also looking for a car, silver or white, 4 doors -
- diesel with a bosch pump, abs and pas -
- aircon would be nice, and not a ford -
to unsubscribe, go to http://www.yahoogroups.com and follow the instructions
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
Re: resistors - Eirik Karlsen - Apr 21 15:31:44 2006
Just measure the thermistor alone, at 20 degC...that'll give you its
nominal value.
Not a foolproof way of identifying it though as all thermistors are not
the
same in terms of temp/value characteristics.
Lez wrote:
> DoH!
>
> I'm telling you my head hurts......
>
> I was trying to work out the value of a thermistor to order a spare,
> its got a resistor in parallel with it, of (according to meter) 17.2k
> (17200ohms)
>
> At 0degress C its reading (therm+resistor combination) is 4237 ohms
> At 100 degrees C its reading 346 ohms
>
> Everytime I work it out I get a different reading when I double check
> it by doinfthe same sum backwards.
>
> I tried an online one but it crashed, gave a reading with an exponent
> (E+3 etc)
> or kept saying 1856 ohms, which it cant be...
>
> I had not realised how bad I had got at maths having a pc etc always
> by my side!
> --
>
> Lez
>
> - Looking for early starwars (episode 4, original starwars)
> recordings, even pirate
> -
> - I dont need your originals just some information about running time
> - and scene cut points
> -
> -
> - also looking for a car, silver or white, 4 doors -
> - diesel with a bosch pump, abs and pas -
> - aircon would be nice, and not a ford -
>
> to unsubscribe, go to http://www.yahoogroups.com and follow the
> instructions
>
> -----------------------------------------------------------------------
> YAHOO! GROUPS LINKS
>
> +
>
> -----------------------------------------------------------------------
>
--
*******************************************
VISIT MY HOME PAGE:
LAST UPDATED: 23/08/2003
*******************************************
Regards
Eirik Karlsen
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
nominal value.
Not a foolproof way of identifying it though as all thermistors are not
the
same in terms of temp/value characteristics.
Lez wrote:
> DoH!
>
> I'm telling you my head hurts......
>
> I was trying to work out the value of a thermistor to order a spare,
> its got a resistor in parallel with it, of (according to meter) 17.2k
> (17200ohms)
>
> At 0degress C its reading (therm+resistor combination) is 4237 ohms
> At 100 degrees C its reading 346 ohms
>
> Everytime I work it out I get a different reading when I double check
> it by doinfthe same sum backwards.
>
> I tried an online one but it crashed, gave a reading with an exponent
> (E+3 etc)
> or kept saying 1856 ohms, which it cant be...
>
> I had not realised how bad I had got at maths having a pc etc always
> by my side!
> --
>
> Lez
>
> - Looking for early starwars (episode 4, original starwars)
> recordings, even pirate
> -
> - I dont need your originals just some information about running time
> - and scene cut points
> -
> -
> - also looking for a car, silver or white, 4 doors -
> - diesel with a bosch pump, abs and pas -
> - aircon would be nice, and not a ford -
>
> to unsubscribe, go to http://www.yahoogroups.com and follow the
> instructions
>
> -----------------------------------------------------------------------
> YAHOO! GROUPS LINKS
>
> +
>
> -----------------------------------------------------------------------
>
--
*******************************************
VISIT MY HOME PAGE:
LAST UPDATED: 23/08/2003
*******************************************
Regards
Eirik Karlsen
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
Re: resistors - Lez - Apr 21 17:22:15 2006
Its set in epoxy and part of a bigger block, so I Cant dig/drill it out
without fear of further damage.
Just got back from taking wife shopping (please no pity) so when my head
stops spinning I will get the calculator out and try again.........
I'm telling you my head hurts......
>
> I was trying to work out the value of a thermistor to order a spare,
> its got a resistor in parallel with it, of (according to meter) 17.2k
> (17200ohms)
>
> At 0degress C its reading (therm+resistor combination) is 4237 ohms
> At 100 degrees C its reading 346 ohms
>
> Everytime I work it out I get a different reading when I double check
> it by doinfthe same sum backwards.
>
> I tried an online one but it crashed, gave a reading with an exponent (E+3
> etc)
> or kept saying 1856 ohms, which it cant be...
>
> I had not realised how bad I had got at maths having a pc etc always by my
> side!
--
Lez
- Looking for early starwars (episode 4, original starwars) recordings, even
pirate
-
- I dont need your originals just some information about running time
- and scene cut points
-
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
without fear of further damage.
Just got back from taking wife shopping (please no pity) so when my head
stops spinning I will get the calculator out and try again.........
I'm telling you my head hurts......
>
> I was trying to work out the value of a thermistor to order a spare,
> its got a resistor in parallel with it, of (according to meter) 17.2k
> (17200ohms)
>
> At 0degress C its reading (therm+resistor combination) is 4237 ohms
> At 100 degrees C its reading 346 ohms
>
> Everytime I work it out I get a different reading when I double check
> it by doinfthe same sum backwards.
>
> I tried an online one but it crashed, gave a reading with an exponent (E+3
> etc)
> or kept saying 1856 ohms, which it cant be...
>
> I had not realised how bad I had got at maths having a pc etc always by my
> side!
--
Lez
- Looking for early starwars (episode 4, original starwars) recordings, even
pirate
-
- I dont need your originals just some information about running time
- and scene cut points
-
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
Re: resistors - john - Apr 22 0:39:24 2006
--- In p...@yahoogroups.com, Lez wrote:
>
> Its set in epoxy and part of a bigger block, so I Cant dig/drill it out
> without fear of further damage.
>
> Just got back from taking wife shopping (please no pity) so when my head
> stops spinning I will get the calculator out and try again.........
> I'm telling you my head hurts......
> >
> > I was trying to work out the value of a thermistor to order a spare,
> > its got a resistor in parallel with it, of (according to meter) 17.2k
> > (17200ohms)
> >
> > At 0degress C its reading (therm+resistor combination) is 4237 ohms
> > At 100 degrees C its reading 346 ohms
> >
> > Everytime I work it out I get a different reading when I double check
> > it by doinfthe same sum backwards.
> >
> > I tried an online one but it crashed, gave a reading with an
exponent (E+3
> > etc)
> > or kept saying 1856 ohms, which it cant be...
> >
> > I had not realised how bad I had got at maths having a pc etc
always by my
> > side!
> >
> >
> >
> >
> --
>
> Lez
>
> - Looking for early starwars (episode 4, original starwars)
recordings, even
> pirate
> -
> - I dont need your originals just some information about running time
> - and scene cut points
> -
>
I uploaded an Excel file graph of the ideal slope the thermister would
have with the data points you gave.
to unsubscribe, go to http://www.yahoogroups.com and follow the instructions
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
>
> Its set in epoxy and part of a bigger block, so I Cant dig/drill it out
> without fear of further damage.
>
> Just got back from taking wife shopping (please no pity) so when my head
> stops spinning I will get the calculator out and try again.........
> I'm telling you my head hurts......
> >
> > I was trying to work out the value of a thermistor to order a spare,
> > its got a resistor in parallel with it, of (according to meter) 17.2k
> > (17200ohms)
> >
> > At 0degress C its reading (therm+resistor combination) is 4237 ohms
> > At 100 degrees C its reading 346 ohms
> >
> > Everytime I work it out I get a different reading when I double check
> > it by doinfthe same sum backwards.
> >
> > I tried an online one but it crashed, gave a reading with an
exponent (E+3
> > etc)
> > or kept saying 1856 ohms, which it cant be...
> >
> > I had not realised how bad I had got at maths having a pc etc
always by my
> > side!
> >
> >
> >
> >
> --
>
> Lez
>
> - Looking for early starwars (episode 4, original starwars)
recordings, even
> pirate
> -
> - I dont need your originals just some information about running time
> - and scene cut points
> -
>
I uploaded an Excel file graph of the ideal slope the thermister would
have with the data points you gave.
to unsubscribe, go to http://www.yahoogroups.com and follow the instructions
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
Re: Re: resistors - Lez - Apr 22 5:33:17 2006
Big Thanks! just woke up so the day must be off to a good start already!
On 22/04/06, john wrote:
> --- In p...@yahoogroups.com, Lez wrote:
> >
> > Its set in epoxy and part of a bigger block, so I Cant dig/drill it out
> > without fear of further damage.
> >
> > Just got back from taking wife shopping (please no pity) so when my head
> > stops spinning I will get the calculator out and try again.........
> >
> >
> > I'm telling you my head hurts......
> > >
> > > I was trying to work out the value of a thermistor to order a spare,
> > > its got a resistor in parallel with it, of (according to meter) 17.2k
> > > (17200ohms)
> > >
> > > At 0degress C its reading (therm+resistor combination) is 4237 ohms
> > > At 100 degrees C its reading 346 ohms
> > >
> > > Everytime I work it out I get a different reading when I double check
> > > it by doinfthe same sum backwards.
> > >
> > > I tried an online one but it crashed, gave a reading with an
> exponent (E+3
> > > etc)
> > > or kept saying 1856 ohms, which it cant be...
> > >
> > > I had not realised how bad I had got at maths having a pc etc
> always by my
> > > side!
> > >
> > >
> > >
> > >
> > --
> >
> >
> >
> > Lez
> >
> > - Looking for early starwars (episode 4, original starwars)
> recordings, even
> > pirate
> > -
> > - I dont need your originals just some information about running time
> > - and scene cut points
> > -
> > I uploaded an Excel file graph of the ideal slope the thermister would
> have with the data points you gave.
> to unsubscribe, go to http://www.yahoogroups.com and follow the instructions
>
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )
On 22/04/06, john
> --- In p...@yahoogroups.com, Lez
> >
> > Its set in epoxy and part of a bigger block, so I Cant dig/drill it out
> > without fear of further damage.
> >
> > Just got back from taking wife shopping (please no pity) so when my head
> > stops spinning I will get the calculator out and try again.........
> >
> >
> > I'm telling you my head hurts......
> > >
> > > I was trying to work out the value of a thermistor to order a spare,
> > > its got a resistor in parallel with it, of (according to meter) 17.2k
> > > (17200ohms)
> > >
> > > At 0degress C its reading (therm+resistor combination) is 4237 ohms
> > > At 100 degrees C its reading 346 ohms
> > >
> > > Everytime I work it out I get a different reading when I double check
> > > it by doinfthe same sum backwards.
> > >
> > > I tried an online one but it crashed, gave a reading with an
> exponent (E+3
> > > etc)
> > > or kept saying 1856 ohms, which it cant be...
> > >
> > > I had not realised how bad I had got at maths having a pc etc
> always by my
> > > side!
> > >
> > >
> > >
> > >
> > --
> >
> >
> >
> > Lez
> >
> > - Looking for early starwars (episode 4, original starwars)
> recordings, even
> > pirate
> > -
> > - I dont need your originals just some information about running time
> > - and scene cut points
> > -
> > I uploaded an Excel file graph of the ideal slope the thermister would
> have with the data points you gave.
> to unsubscribe, go to http://www.yahoogroups.com and follow the instructions
>
(You need to be a member of piclist -- send a blank email to piclist-subscribe@yahoogroups.com )