[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Meter Shunts ??

Original poster: robert heidlebaugh <rheidlebaugh@xxxxxxxxxxxxxx>

An additional comment, In old radio transmitters the current meter was
mounted recessed behind the front panel a inch or so to protect finger
meter readers from high voltage as the meter was at high voltage potential.
      Robert   H
--


> From: "Tesla list" <tesla@xxxxxxxxxx>
> Date: Sun, 13 Feb 2005 19:51:56 -0700
> To: tesla@xxxxxxxxxx
> Subject: Re: Meter Shunts ??
> Resent-From: tesla@xxxxxxxxxx
> Resent-Date: Sun, 13 Feb 2005 19:52:24 -0700 (MST)
>
> Original poster: Ed Phillips <evp@xxxxxxxxxxx>
>
> "A shunt is nothing more than a low value resistor. Current through the
> shunt
> causes a voltage drop across it such that V = I x R.
>
> Stephen A. Mathieson"
>
> It's quite a little more than that. Most importantly, its a 4-terminal
> resistor! Heavy current flows through the main terminals while the
> meter is connected to a second pair of terminals. That way contact
> resistance is minimized and any connection resistance in the
> high-current circuit has no effect on the reading.
>
> Ed
>
>