Stevens tester

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  • February 25, 2022 at 8:48 pm #255266
    wbeaton
    Participant

      It works as you remember, Frank. However, it is the power supply for the Stevens tester that Dave is repairing. The power supply output should be constant. Once Dave knows the expected output voltage he can determine how to best drop the 20V down to the desired voltage. I thought the power supply was supposed to be a constant 8V output. Manual says to use a 6V power suppply (car battery so actually more like 6.4V) or a hotshot battery (7.2V). I can’t find any specs other than frequency and amps.

      Wayne
      Upper Canada Chapter

      uccaomci.com

      February 25, 2022 at 8:57 pm #255267
      Dave Willacy
      Participant

        what voltage did you finally set yours to?

        February 25, 2022 at 9:05 pm #255268
        Dave Willacy
        Participant

          Right!  The manual actually says to set the current first with the leads connected together, then test the coil at that setting.  If it sparks fine the coil is “good”.  Personally I like to see at what current it starts to fire and assess that reading against the “norm” in the book. Either way its important to have a standard voltage applied to achieve the current given the coils resistance.  Just me being picky.

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