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Calculating resistance of a cable

Hi all

Im currently trying to work out a simple circuit which is capable of
calculating the resistance of an 8 core cable (each cable Individually
that is), therefore 8 seperate resistance values.

I understand if a 1 core wire was to be calculated, one wheatstone
bridge would be used - Is this correct so far?

Therefore if I have an 8 core cable, would I be expected to us eight
wheatstone bridges? If no, could somebody advice me on a better method
for implementing my resistance checks.

Thanks Tuurbo
 
K

Ken Taylor

Jan 1, 1970
0
Hi all

Im currently trying to work out a simple circuit which is capable of
calculating the resistance of an 8 core cable (each cable Individually
that is), therefore 8 seperate resistance values.

I understand if a 1 core wire was to be calculated, one wheatstone
bridge would be used - Is this correct so far?

Therefore if I have an 8 core cable, would I be expected to us eight
wheatstone bridges? If no, could somebody advice me on a better method
for implementing my resistance checks.

Thanks Tuurbo
Do you really expect the eight cores to be of significantly different
values? The manufacturer spec's will give a resistance per metre or 100m (or
feet..... darn Yankees!). Given all that, a bridge is a good way to go.

Cheers.

Ken
 
D

Don Bowey

Jan 1, 1970
0
Do you really expect the eight cores to be of significantly different
values? The manufacturer spec's will give a resistance per metre or 100m (or
feet..... darn Yankees!). Given all that, a bridge is a good way to go.

Cheers.

Ken

What is a core? Is that what is called a binder-group in the USA?

Thanks

Don
 
J

John Woodgate

Jan 1, 1970
0
I read in sci.electronics.design that Don Bowey <[email protected]>
What is a core? Is that what is called a binder-group in the USA?

A multi-core cable is what the Belden catalog(ue) calls a
'multi-conductor cable'. But a core could be a coax or a
screened/shielded twisted pair.
 
P

Paul Hovnanian P.E.

Jan 1, 1970
0
Hi all

Im currently trying to work out a simple circuit which is capable of
calculating the resistance of an 8 core cable (each cable Individually
that is), therefore 8 seperate resistance values.

Calculate? Or measure?
I understand if a 1 core wire was to be calculated, one wheatstone
bridge would be used - Is this correct so far?

Measured, yes.
Therefore if I have an 8 core cable, would I be expected to us eight
wheatstone bridges? If no, could somebody advice me on a better method
for implementing my resistance checks.

Connect a single bridge to each conductor in turn. Unless you must make
8 simultaneous measurements.
 
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