[Halld-controls] Shunt resistance

[Joshua Ballard]

We're limited to 10V from the power supply.  Right now, the voltage drop 
across the shunt is 100 mV at 1500 A.  If we increase by a factor of 10, 
that goes to 1 V....

Isn't shunt selection related to joule heating?  From what I read 
online, they are all VERY low resistance to limit the heat output.  In 
fact, for continuous duty, shunts are typically limited to 2/3 of their 
rated current.

Maybe we could water cool a higher-resistance shunt?

What is the cost of an amplifier (signal conditioner) vs. a new shunt?

Josh



On 10/18/2011 1:42 PM, Elliott Wolin wrote:
> Hi,
>
> Yi had a good question:  can we increase the shunt resistance by a large
> factor so it's easier to read out?  Factor of 10?  100?
>
> What sets the maximum shunt resistance?
>