Originally Posted by Sniper
Originally Posted by 383man
Funny thing is I also worked at a Dodge dealer for 24 years and when they started using the 3 wire Hall Effect unit in the dist one of the Mopar tech guys told me its better then the AC pick-up because it uses a higher voltage (5 volt signal wire) then the AC pick-up thats about 1.6 volts AC signal so it wont be effected by a dirty connection as easy. So I thought we would not see many AC pick-up units much more but thats not true as many still use them so I guess the Hall Effect is not all that much better. Ron


Hall effect is a cleaner signal than the old reluctor setup, computers don't like dirty signals. As for the signal strength of the old setup, it varies with RPM, at idle it's small, get up in rpm and it can approach 100v. It is essentially an unregulated AC generator.


I agree the magnetic pick-up is an AC generator basically. I never checked them at high RPM but I know when cranking the eng they give around 1.6 AC volts on my meters. I assumed the Hall Effect unit was a better signal since its a digital 5 volt on-off signal. But I am not and electronic engineer just a lifetime tech who tries to understand any systems I work on. And that can keep my busy most of the time trying to stay on top of the latest technology as I am sure you know. Sometimes I feel like I wish technology would stand still for a few years so I can stop learning for a little while and take a break. shruggy Course no company can afford to do that and fall behind. Ron