Hi there, tried connecting an HSTS21 current sensor as given inn the schematic below. Then tried passing current through a wire to detect any changes in Vout and nothing changed at Vout. In this configuration with Vref floating, Vout is 1.61V. With Vref 0V, Vout is 0.6V. With Vref 2.5, Vout is 1.81. With Vref 3.17V, Vout is 2.36V. Lastly, with Vref 5V, Vout is 4.07V.
Would someone explain what was done wrong here?
Thanks
Well, lets look a the specifications in the link you provided.
It states a 1% linearity, and a 2.5 volts output at 50 amps.
If you put 5 amps through the hole, you can expect 0.25 volts. How many amps did you use in your test?
Paul
Hi there,
I used around 4-6 amps in my test, but it did not respond at all, not even a 0.01V change at the output. It seems I have like 3 more similar sensors, but they are all giving the same result.