Quote:
Originally Posted by 304065
What car?
Dave even with a function generator an amp circuit is still required. (I have tried it with an 11v square wave from my signal generator and it's not sufficient current to drive a October 1970- tach).
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Interesting, I had an issue with my speedo (78 sc) and had no issue testing it with my signal generator (HP Agilent) without an amplifier. I guess it just depends how much your generator can drive. However now that I think about it the speedo my have a separate 12V input I'm not sure its been a while.
Regards
Dave
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