Date:         Sun, 20 Feb 2005 08:52:19 -0600
Reply-To:     Jim Felder <felder@KNOLOGY.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jim Felder <felder@KNOLOGY.NET>
Subject:      Re: Door electrics problem: digital vs analog meters?
Comments: To: THX0001@AOL.COM
In-Reply-To:  <8b.21823652.2f49f4fd@aol.com>
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Thanks, George. I'll bet this is what I was looking for. I barely knew
how to describe it, and didn't know how to do it. This will get me
going.

Since both are so cheap nowadays, is there any advantage to using a
digital vs an analog meter in a test like this?

Jim


On Feb 20, 2005, at 8:13 AM, George Goff wrote:

> In a message dated 2/19/05 7:40:16 PM, felder@KNOLOGY.NET writes:
>
> << It's like there's a voltage drop to some point below which the motor
> doesn't run. >>
>
> You have a voltage drop all right, but it is not across the motor.
> Connect
> one meter lead to a solid ground and take voltage readings at every
> connection
> point from the motor terminal back to the line side of its fuse WITH
> THE
> CIRCUIT LOADED.  Or start at the supply side of the fuse and go
> towards the motor.
> Loaded down, nearly all of the voltage drop will appear across any high
> resistance connection, whereas, unloaded you can take voltage readings
> all day and
> never see a problem.
>
> George
>