Is there a IC suitable for Isolated measurement of both high voltage as well as
Skeil
Posts: 7
I am building a device to measure both the voltage up to DC 150v
as well as reading the amperage off of a 200A 75mv Shunt
is there any device that is electrically isolated as both measuremants
would see 150 differences to gnd.
I have searched the forums here and google and didnt really see
anything that was suitable and was wondering if any one here
has used or can recommend anything to get the job done
as well as reading the amperage off of a 200A 75mv Shunt
is there any device that is electrically isolated as both measuremants
would see 150 differences to gnd.
I have searched the forums here and google and didnt really see
anything that was suitable and was wondering if any one here
has used or can recommend anything to get the job done
Comments
http://focus.ti.com/lit/ds/symlink/ina206.pdf
I don't know if you can divide the voltage down by 1/2 to make use of this chip though. If you are using batteries in series perhaps you can monitor from the 1/2 way point and double the result. This one is also bi directional so you can monitor charging as well.
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Think Inside the box first and if that doesn't work..
Re-arrange what's inside the box then...
Think outside the BOX!
I have been looking at the ina 208 just need a nice
>8bit ·adc to measure the voltage
In my case since the source voltage is isolated from the shunt
the ina 208 which has a 100x multiplier 75mv / .075V
so If I use a 20A shunt at 75 mv drop· at 10amp the voltage
will be less than 5V which should be nice to put into a ADC
It would just be nice to see if anyone else has done this versus
being on the frontier
Oh well its only a few bucks plus shipping