hall effect Junkyard link

[Orin Eman]

So a pretty 'square' signal is expected.  From the Audi 4000 Bentley manual
(same engine as VWs):

"When rotating engine, shutter of trigger wheel will enter and pass through
air gap of Hall generator

volts = 0 to 0.7 (shutter outside of air gap)
volts = 1.8 up to battery voltage (shutter inside of air gap)"

I may put a scope on my Audi 5k and see how clean it looks...

> Hi Seth
> The hall output is just an open collector digital output (highs and lows
> depending on position) a low will be ground a high will be the supply
> voltage, typically about 6 0r 7 volts. If you don't have it connected to an
> ECU supply it with 6 vdc and a 1K pullup and you are off and running.

> At 03:16 AM 5/21/97 +0000, you wrote:
> >I am wondering if anyone out ther has put a 'scope on  the output from a 
> >VW hall effect sender (in the distributor) and if so, could you inform me 
> >waht to expect?  I am trying to get a distributor to test, but it would 
> Lotsa Luck Eric
> 85 GTI with VR6 power