September 15, 2012
about a year ago
I am seeing a problem with linearity in the amp output. It’s not until 6 amps or higher when the output becomes somewhat linear. Looking at page 4 of INA169 spec sheet, this makes sense. The graph “Output Error vs Vin” shows that minimum
Vin for small output error is around 10mV. To get 10mV across a 0.001 resistor you would need 10 amps. I would like to
measure amps down to 0.2 but the readings would be way off if using just a scaling factor. I wonder if the INA282 and a 0.005 shunt would have been a better choice.
No public wish lists :(
Forgot your password?
No account? Register one!