Electrical gremlins again (crazy needle syndrome)

[Huw Powell]

> I measured AC current at the alternator. Shows 30 - 31 volt.  Alarm!
> However, I measured AC across battery terminals and it shows 28 volt,
> with battery disconnected from the car. Should AC be showing 0?

The AC measurement on a handheld just runs the signal through diodes, 
then compensates for lost peaks.  Probably not how to measure this

I think your voltmeter (the car one) is pooched.


-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/