Frequency Display Module for Oscillation | Car Audio Techs

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A user is seeking a pre-made frequency display module to connect to a transistor for oscillation reference in car audio applications. They emphasize the need for a simple and affordable solution. Suggestions include checking out various frequency counter kits found online. The conversation also notes that some digital voltmeters, like the Fluke 87, have built-in frequency measurement capabilities up to 200KHz. The user clarifies they specifically need an add-on module for a PWM circuit rather than a testing device.
justinreeves
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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.
 
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How high of a frequency? Some DVMs like a Fluke 87 have this built in already and is good to 200KHz.
 
Yeah I don't 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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