"Dave Plowman (News)" wrote in message
...
In article ,
dennis@home wrote:
A VR sensor provides adequate precision. The electronics in the ECU
trigger at the zero crossing point. Only thing in a hall effect's
favour
is it gives a constant amplitude signal regardless of speed.


So VR is less accurate as it has to detect zero crossing in a noisy
environment.

Not less accurate if the electronics are properly designed.

A hall effect can output a big voltage signal as soon as it detects a
particular magnetic signal in a far less noisy environment.

True. A VR sensor really needs screened cable since the output when
cranking may only be a volt or so.

However, a hall sensor is a complex electronic device, and by nature with
a CPS situated where it is going to get hot. And heat kills most
electronics in time.

Clearly doesn’t kill most car computers.