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Related

Hey, Guys, I'm stumped It

phoenixcomm
phoenixcomm over 2 years ago

imageOk, it claims to be a 0.22Ω 3watt power sand resistor, with 3 legs. (so starting at the top and going clockwise, 1 at the top, 2 on the right, and 3 on the left)

My fluke 113 says no it's 0.38Ω between 1 and 2, as well as between 1 and 3, and 0.59/0.60Ω between 2 and 3. 

My HP3435A  set on the 20Ω scale says it's 0.37Ω between 1 and 2, and 0.38Ω between 1 and 3, and 0.59Ω/0.60Ω between 2 and 3.

Something is not right. 

and Please look at the logo, so I can figure out who made the stupid thing..

oh btw the wires go all the way through the body and are about 1" long on the reverse side. 

Thanks again. Cris

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Top Replies

  • jc2048
    jc2048 over 2 years ago +5
    As you've got two meters, perhaps just do your own four-wire measurement. Set a PSU to constant-current, use one of your meters to measure the current through the resistor, the other to measure the voltage…
  • beacon_dave
    beacon_dave over 2 years ago in reply to jc2048 +5
    Push pull amplifier designs appear to use them. Here is a Sony receiver design using a similar device. https://www.petervis.com/Amplifiers/sony-str-k740p/how-to-fix-sony-amplifier-protect-mode-error…
  • michaelkellett
    michaelkellett over 2 years ago +4
    Just guessing but: lets assume your leads have about .15 ohm resistance. then its a 0.22 R from 1 to 2, a second 0.22R from 1 to 3 (they both read about 0.37) so from 2 to 3 its 0.44R + the lead reistance…
Parents
  • beacon_dave
    beacon_dave over 2 years ago
    phoenixcomm said:
    and Please look at the logo, so I can figure out who made the stupid thing..

    Looks similar to the old Pana Sonic 
    image

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  • anniel747
    anniel747 over 2 years ago in reply to beacon_dave

    Matsushita, National and Panasonic all shared the triangular logo at some time.

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  • anniel747
    anniel747 over 2 years ago in reply to anniel747

    https://logodix.com/logos/28139

    https://logodix.com/logos/1785749

    logodix.com/.../1785767

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  • anniel747
    anniel747 over 2 years ago in reply to anniel747

    https://logodix.com/logos/28139

    https://logodix.com/logos/1785749

    logodix.com/.../1785767

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