[GreenKeys] Milliamp meter shunting...

[Ralph Mowery]

It would be hard to tell without knowing the model of the meter.

 

Some of the meters that require shunts will have on the front of the scale near the bottom in very small words something along the line of meter full scale 1 ma or FS=1 ma. Or whatever the meter movement actually is.

 

 

 

From: GreenKeys [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Kenneth Gartland
Sent: Saturday, May 06, 2017 1:49 PM
To: greenkeys
Subject: [GreenKeys] Milliamp meter shunting...

 

Hi guys...

 

I have a couple of old Simpson ma meters rated 

at 100 ma...

 

I went to use them to test a known 40ma cct.

the other day, and both pegged at over the scale limit...

 

Do these older meters require some type of "Shunt" 

across the terminals to get an accurate reading?

 

I know the newer meters can be directly connected in

series with the circuit load...

 

I used to know this kind of stuff, but too many brain farts

these days to remember!

 

Tks for help on this issue!

 

Cheers!

 

Ken

VE3-HMQ

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