 EE question...D-Jet related |
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| Mueller |
 Dec 9 2004, 03:07 PM
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914 Freak!  Group: Members Posts: 17,155 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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What I want to do is have 1 12vdc square wave input, with a "splitter" that will alternate between 2 outputs, I want to do this electronically, and not with a Hall type sensor going high or low to reset
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| davep |
Dec 9 2004, 10:02 PM
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914 Historian Group: Benefactors Posts: 5,294 Joined: 13-October 03 From: Burford, ON, N0E 1A0 Member No.: 1,244 Region Association: Canada  |
The trigger points create a fairly short pulse. Shorter and closer together as the RPM rises, and of course timed to the crankshaft rotation. I'm not sure how to create a signal EXACTLY matched to the RPM without a direct link to the crankshaft. Trigger points, ignition rotor, crank position sensors all are linked to the crank. Think how crappy the engine runs when the distributor is not timed correctly, or the dwell is not correct. The factory way is simple and reliable.
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Posts in this topic
Mueller EE question...D-Jet related Dec 9 2004, 03:07 PM
Root_Werks I thought I knew the D-jet system pretty well, wha... Dec 9 2004, 03:53 PM lapuwali You trying to simulate trigger points? Sounds lik... Dec 9 2004, 04:02 PM bondo http://www.fairchildsemi.com/pf/MM/MM74C374.html
... Dec 9 2004, 04:37 PM davep This thread is useless without more data.
A squar... Dec 9 2004, 04:48 PM bondo I *THINK* he is trying to modify a basic tach sign... Dec 9 2004, 04:59 PM Mueller yes to a bunch of the questions :)
trying to elim... Dec 9 2004, 05:11 PM McMark I think there is a small amount of time when both ... Dec 9 2004, 06:19 PM lapuwali pbanders <... Dec 9 2004, 08:17 PM lapuwali QUOTE
bondo Now that I think about it, the two trigger points ... Dec 9 2004, 10:49 PM bondo I know you wanted to avoid a hall type sensor, but... Dec 9 2004, 10:53 PM vsg914 Jeff Bowlsby The trigger points only tell the alternating pairs... Dec 9 2004, 10:56 PM bondo vsg914 Royce, I try not to think why. It just confuses me... Dec 9 2004, 11:05 PM Mueller James is correct...Mallory Unilite distributor, ha... Dec 9 2004, 11:36 PM scott thacher why not just put a pick up on the fly wheel to tri... Dec 9 2004, 11:59 PM McMark After thinking about this for awhile, I'll hav... Dec 10 2004, 01:35 AM DNHunt Mike
It looks to me like you need to find the rig... Dec 10 2004, 07:57 AM scott thacher mikerose Hi Mike, This is were I say :finger2: :finger2: ... Dec 10 2004, 10:05 AM McMark |
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