Donald I have a feeling that since I can see the changes with the DVM
but the reading on the gauges are low the duty cycle is out. Maybe its
sticky contacts like a relay. Again an oscilloscope would show it
perfectly.
Alan
Donald H Locker wrote:
>
> Hi, Alan.
>
> The voltage stabiliser is actually a [slow-speed electromechanical
> with very little damping] switch-mode regulator. So a DVM will show
> all over the place. The output is a pulse-width modulated square wave
> with a high value of battery voltage and a low value of ground. An
> analog meter will at least show you the switching, while the gauges
> are slow enough that they behave as if they received a constant 10V.
>
> HTH,
> Donald.
>
> > Date: Sat, 06 Jan 2001 17:23:08 -0800
> > From: Alan Lemen <alemen@ftconnect.com>
> >
> >
> [snips]
> > Voltage on stabiliser side of instruments is all over the place on my
> > DVM. Max is just over 11v and min just over 6v. Since the engine is not
> > running and it's simply the battery I did not expect this. I had hoped
> > to see stable 10v (I am sure I had seen this value somewhere before and
> > it has to be less than the battery voltage).
> >
> > Question is what voltage should it be and should it be stable. It is
> > supposed to be a stabiliser.
> >
> > Alan
|