[ROVERNET - UK] Re: Electrical Question

Paul Smith Paul.Smith at auroraenergy.com.au
Mon May 14 02:22:17 BST 2007

Disagree there...
you will get substantial AC on a multimeter when the diodes are ok too.
The mm just puts a capacitor in line, so any variation in DC will be seen as AC (it is AC with DC shift).
I think he has a generator anyway.  I have sent him the next stuff to check out.


-----Original Message-----
From: rovernet-bounces at lyris.ccdata.com
[mailto:rovernet-bounces at lyris.ccdata.com]On Behalf Of David Read
Sent: Monday, 14 May 2007 10:53 am
To: rovernet at lyris.ccdata.com
Subject: Re: [ROVERNET - UK] Re: Electrical Question

H Walter

Walter Reynolds wrote:
> Thanks for the quick responses.
> In answer to Paul:  IGN light goes out when ignition turned off.

That's ok

> In answer to David:  Battery at rest shows 12.5 volts on my volt meter. 
> This drops to 12.0 v at engine start and drops further to 11.75 v after 
> 3 minutes running.  After 5 minutes is's still at 11.75v.


Doesn't sound good at all. Suspect regulator or a blown diode or two.
If the diode/s are US, the average (DC) voltage of the output waveform 
may well be below 12v.
Try putting your multimeter on *AC* volts with the engine running. If it 
reads anything substantial, then the diodes are definately suspect as 
raw AC is getting to the system.
Your battery will be suffering in the long term as well.

South Oz

> Walter.
>> So it only happens in Spring?
>> Does it stay on with ignition off?
>> Have you measured the voltage at the battery terminals with the engine
>> on and off?

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