Steve,
Perhaps my comments to Ken have cleared up what I did with the inductor in
my case. Some kind of step-down transformer is needed to drive the input to
the Jaeger tach when there is too little current flowing through the points
to drive it. Probably a 10:1 step-down with rather low impedance; perhaps
an audio matching transformer can be found that is suitable (small size,
etc.). My motivation to explore this is somewhat reduced because I now have
a modern Smiths tach which is voltage rather than current triggered. If
there's enough interest, perhaps there's a transformer available from Radio
Shack, etc. that will drive the Jaeger tach from most electronic ignitions
like the MSD, etc.
One of these days I'm going to take a look at my tachometer/ignition system
with an o'scope. I suggest you guys do the same. It would be interesting
to know how much current it takes to run the Jaeger tach (with a single turn
at the input), for example.
Later, Bob Palmer
>Bob,
>
>If "GM type" mechanical points means gap adjustable from outside the
>distributor, that's the one thing I think GM did better than Ford.
>Pertec makes a very good Hall-effect solid state point replacemnt option
>for most all cars for about $70. Sunbeam Specialties carries them for
>Alpines and Tigers.
>
>If your "inductor" added to the circuit to make the tach behave is an
>external coil, rather than a reworking of the tach inductor itself, it
>would probably be of great interest to those with compatibility
>problems. Why don't you post it so they don't have to take the inductive
>loop off the tach body and futz with it?
>
>Steve
>--
>Steve Laifman < One first kiss, >
>B9472289 < one first love, and >
> < one first win, is all >
> < you get in this life. >
>
>
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