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Cool1
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Re: Tachometer Operation/Waveforms Mon, 05 September 2005 09:35 Go to previous message
Its not the 12v thats operating the tacho in older cars, its the back emf. The circuit posted above with the relay will work fine and has been proven many times.

[Updated on: Mon, 05 September 2005 09:35]

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[Message index]

SubjectPosterDate
Read Message   Tachometer Operation/Waveforms wilbo666Sat, 03 September 2005 14:06
Read Message   Re: Tachometer Operation/Waveforms THE WITZLSun, 04 September 2005 00:49
Read Message   Re: Tachometer Operation/Waveforms wilbo666Sun, 04 September 2005 10:36
Read Message   Re: Tachometer Operation/Waveforms thechucksterSun, 04 September 2005 11:39
Read Message   Re: Tachometer Operation/Waveforms ndgcprSun, 04 September 2005 05:12
Read Message   Re: Tachometer Operation/Waveforms wilbo666Sun, 04 September 2005 12:11
Read Message   Re: Tachometer Operation/Waveforms 82MKIIMon, 05 September 2005 05:06
Read Message   Re: Tachometer Operation/Waveforms  Cool1Mon, 05 September 2005 09:35
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