This is a stock Mazda rotary engine mag pickup of some sort.
Might be a 3rd gen but I think it is an RX8 trigger.

5 ms per division so 25 ms  .025 seconds speed
RPM is 1/ms or 40 rev's per second or 2400 RPM.

5 volts per div so about +- 12 volts trigger pulse.
Pulse conditioning will be little more than a diode.
No amp needed.

You can see all I used is a simple bar of steel about
6 inches long 3/4 inch wide and 1/8th inch thick.
This is to trigger the 555 fuel injectors.
It can be rotated on the e-shaft pulley to set
the injector timing anywhere.

There is a movie and a picture.

Still working on the ignition triggers.
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BTW at 1200 RPM it is still +- 5 volts
which is more than enough to trigger the 555.

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I reshaped my trigger wheel and added a full wave bridge
rectifier to recover both top and bottom of the
trigger pulse. http://www.youtube.com/watch?v=PKy5ghLiz6I
That doubles the voltage from the pickup and only
requires four cheap diodes.

The ideal trigger tooth is about 1/4 to 3/8 thick (wide)
and comes to a sharp point. The spacing must be
.050 or less. The amplitude of the trigger pulse
is a very VERY strong function of the spacing.
0.010 will make a HUGE difference.

I would use a feeler gage to set it.

I also did away with one tooth to better simulate
what will happen in the final flyaway configuration.
There will be only one trigger tooth and four mag pickups.
Two for ignition (about 22 degrees BTDC) and two for fuel
injection (about 90 degrees BTDC). The angular position of
the pickup relative to top dead center will adjust the
timing of both 555 fuel injection and ignition.

Paul Lamar