Potentiometer Markings

[kthompson]

I am having the hardest time finding out the specs on a set of
potentiometers that I got somehow. Basically I just need to know what
the maximum impedance of each is and if they are linear or
logarithmic. Following are the markings on them.

R 101
805 C

R 102
041 C

R 103
122 C

R 104
013 C

R 105
124 C

Any help would be appreciated. Thanks.

 

[Jamie]

kthompson wrote:

I am having the hardest time finding out the specs on a set of
potentiometers that I got somehow. Basically I just need to know what
the maximum impedance of each is and if they are linear or
logarithmic. Following are the markings on them.

R 101
805 C
100 Ohm

R 102
041 C
1000 Ohms
R 103
122 C
10,000 Ohms.
R 104
013 C
100,000 ohms.
R 105
124 C
1 Meg
Any help would be appreciated. Thanks.

Hows that?, as for the other numbers ? I don't know..
btw, the third digit is the multiplier.

--
"I'm never wrong, once i thought i was, but was mistaken"
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5

 

[JeffM]

kthompson wrote:

specs on a set of potentiometers that I got somehow.
Basically I just need to know what the maximum impedance
of each is and if they are linear or logarithmic.
[...]markings on them

• 
  Set the pot to its midpoint.
  The highest ohmmeter reading across any 2 terminals
  is the resistance (NOT "impedence") of the part.
  If the reading between the midpoint and each end are equal,
  the part is linear.

 

[Eeyore]

kthompson wrote:

I am having the hardest time finding out the specs on a set of
potentiometers that I got somehow. Basically I just need to know what
the maximum impedance of each is and if they are linear or
logarithmic. Following are the markings on them.

R 101
805 C

R 102
041 C

R 103
122 C

R 104
013 C

R 105
124 C

Any help would be appreciated. Thanks.

Can you identify their manufacturer ? Value and law codings on pots vary to some
degree by manufacturer.

Graham

 

[mc]

For resistance, measure end to end with an ohmmeter.

For taper, set the potentiometer to half scale and measure from end to
middle. With linear taper, this will give you 50% of the total resistance;
with audio taper, a bit under 20%.