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Re: Meter Shunts ??
- To: tesla@xxxxxxxxxx
- Subject: Re: Meter Shunts ??
- From: "Tesla list" <tesla@xxxxxxxxxx>
- Date: Sun, 13 Feb 2005 19:51:56 -0700
- Delivered-to: testla@pupman.com
- Delivered-to: tesla@pupman.com
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- Resent-date: Sun, 13 Feb 2005 19:52:24 -0700 (MST)
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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