I missed this. Why? It'll have better noise immunity.I'm currently still using the non hysteresis circuit that you created.
I missed this. Why? It'll have better noise immunity.I'm currently still using the non hysteresis circuit that you created.
Not certain. Is this circuit still on a protoboard? There's a limit to how much real world results you can get out of one. Bypassing caps on a protoboard are rather futile. Your hostile environment requires good grounding, shielding and bypassing techniques.Ok, thank you, I will try the resistor and get the most recent circuit built and tested.
I did happen to notice that it happens more at lower rpms then higher? Maybe due to a quicker rise and fall time at higher rpms? What do you think?
If you add C3 (100pF) from the Schmitt Trigger circuit to your current circuit it will work as a low pass filter in conjunction with R2 - 100KΩ. I think the Schmitt Trigger is a better choice though.Here is the current schematic I am using
http://forum.allaboutcircuits.com/attachment.php?attachmentid=41598&d=1333682378
And here is the one I plan to try and build this weekend (assuming I have all of the components)
http://forum.allaboutcircuits.com/attachment.php?attachmentid=41665&d=1333852496
by Duane Benson
by Dale Wilson
by Jake Hertz
by Duane Benson