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Frequency display help

  1. Mar 27, 2006 #1
    Hell oI am trying to find a pre-made frequency display module that I connect to a transistor for oscillation reference.
    Does anyone know a good place to get a cheap one.
    Im only a car audio tech so i need something simple.
  2. jcsd
  3. Mar 27, 2006 #2


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    Science Advisor

    How high of a frequency? Some DVMs like a Fluke 87 have this built in already and is good to 200KHz.
  4. Mar 27, 2006 #3


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    Staff: Mentor

  5. Mar 27, 2006 #4
    Yeah I dont need a testing device I need a add on module for a PWM circuit for frequency reference.Yeah like this.Thanks.
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