Fascinating project ! Interestingly, 3.5 milliseconds seems like such a long time, when fractions of microseconds can be measured with micro-controllers.
Another interesting project Ken and a great use for the ubiquitous 555. The arc length-to-voltage demonstration reminded me of the the old TV EHT probes that used to work on this principle.
Thank you for posting! Very interesting. I will try to adapt your circuit to a bench test bed for old dwell/tach meters. I have 6 cylinder vintage vehicles with 6, 8 and 12 volt systems and a box full of old test meters. I'd like to use this circuit to see which meters are a suitable fit for each voltage system. What dwell angle is your 3.5 ms equivalent to?
I never miss one of your videos. They are always very practical and interesting. Thanks.
Thanks for your support and feedback. Appreciate that.
Fascinating project ! Interestingly, 3.5 milliseconds seems like such a long time, when fractions of microseconds can be measured with micro-controllers.
Well done, I'm keen to give it a go
Nice looking project! Thanks!
You're welcome.
Thanks in advance, we need to dissect the injection coil and touch the industry
Another interesting project Ken and a great use for the ubiquitous 555.
The arc length-to-voltage demonstration reminded me of the the old TV EHT probes that used to work on this principle.
Very interesting Ken. You do great videos.
Thanks John
Thank you for posting! Very interesting. I will try to adapt your circuit to a bench test bed for old dwell/tach meters. I have 6 cylinder vintage vehicles with 6, 8 and 12 volt systems and a box full of old test meters. I'd like to use this circuit to see which meters are a suitable fit for each voltage system. What dwell angle is your 3.5 ms equivalent to?
The dwell angle would be equivalent to 14 degrees.
@@0033mer Thank you for the quick response!
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Why not just use a dmm to test these coils.
internal primary circuit buffer signal, also safety issue/ HV probes required for dynamic test.