Date:         Mon, 14 Mar 2016 13:19:49 -0400
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: Voltage Question
Comments: To: WILLIAM WITZ <pbwitz@SBCGLOBAL.NET>
In-Reply-To:  <2051268376.4040019.1457206759538.JavaMail.yahoo@mail.yahoo .com>
Content-Type: text/plain; charset="iso-8859-1"; format=flowed

Bill, 12V computer electronics, unlike 12V 
automotive stuff, typically expect 12.0V +/- 0.5V 
for normal supply.  14.0 volts is right at the 
limit for many fans back when I knew something 
about them.  I suggest putting a couple or three 
1N4000-series diodes (the last digit 1-7 
indicates reverse voltage rating from 50V to 
1000V) in series with the positive lead of your 
wall wart to keep the fan happy.  Each one will 
drop around .6 volts, so three would bring you 
comfortably within the nominal range.

Yrs,
d

At 03:39 PM 3/5/2016, WILLIAM WITZ wrote:
>Well thank you everyone for input. I did not 
>think to measure the voltage after connecting 
>the fan load. The reading is now 14 Volts. I can 
>live with that. I guess it will interesting to 
>see if the fan outlives the Battery Charger. It 
>is a nice three stage charger with float and 
>desulfate capabilities.Sometimes even good 
>things come to an end. It is looking like spring 
>here in Califorina and I what to hit the road 
>while we still have some green to look at. it 
>was beautiful to see rivers running last year in 
>Wyoming. I have to find a Voltage draw and a 
>drop somewhere. I need to sort out my cruise 
>control. At least idealiy.  The  Van is 32  
>years old and the list never ends, But what Fun!Thanks Again, Bill