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|    rec.crafts.metalworking    |    Metal working and metallurgy    |    215,367 messages    |
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|    Message 214,939 of 215,367    |
|    Snag to Snag    |
|    Odd readings was : Electronics question    |
|    28 Oct 25 17:09:40    |
      From: Snag_one@msn.com              On 10/27/2025 3:50 PM, Snag wrote:       > I got the new pot installed in the foot pedal to my TIG machine today       > . Same 47k ohm rating as the original . But there's something weird       > going on , I'm not getting the amperage I set the dial for , it's lower       > than the setting . Not an earth shaking problem as I have never used the       > full amperage and I can control it now . Still , I'd rather get the       > amperage I have it set at instead of guessing .               I checked the resistance on that new pot . And I got some odd       readings ... I get 21k maxed out one side and 46k the other side .       Outside terminal to outside I get the 47k plus/minus . THis may or may       not have something to do with output not matching set point . The other       pot measures 47k+- maxed out both ways . I'm having a hard time       understanding the different values , AFAIK these all use a single wiper       center contact so I should be getting the same reading from either side       when maxed out .       --       Snag        I appreciated foreign cultures more       when they stayed foreign ...              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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