Anyone pulled their power steering fuse?

[CrankyOldMan]

Originally Posted by CTScott

The VSS signal is actually a 5V signal. If memory serves me correct the frequency is 100 Hz at 40 MPH and about 20 Hz at 10 MPH.

Is the pulse width fixed, or is it always 50% duty cycle? I'm trying to do a PSPICE sim of the F/V converter and need some idea of the settings for the VPULSE component.

[CTScott]

Originally Posted by CrankyOldMan

Is the pulse width fixed, or is it always 50% duty cycle? I'm trying to do a PSPICE sim of the F/V converter and need some idea of the settings for the VPULSE component.

It's a 50% duty cycle signal, where the width of the pulse decreases as speed increases. If you need a definite frequency value at a particular speed, let me know, as I have a portable scope.

[CrankyOldMan]

Originally Posted by CTScott

It's a 50% duty cycle signal, where the width of the pulse decreases as speed increases.

That should be good enough for the sim, just have to figure out how to do a frequency sweep on a VPULSE. Thanks!