about output of Current Transducer(LEM LA100P)

[mashinga]

Hello guys, I've set output of LEM between -1 V and +1V. I need to shift negative voltage to at least 0V. How can i do it? Could you give me an idea?

 

[schmitt trigger]

If I understand you correctly, you want to shift a voltage swing of -1<V<+1 to 0<V<2 ?

You can use the superposition principle.

 

[BradtheRad]

Can you tap into a positive voltage supply? Then you might be able to adapt this simple level shifter:

 

[schmitt trigger]

What Brad is showing is exactly the superposition principle. On your bipolar waveform you superimpose a fixed DC bias

 

[mtwieg]

Hello guys, I've set output of LEM between -1 V and +1V. I need to shift negative voltage to at least 0V. How can i do it? Could you give me an idea?

It has a current output, so you can do this by connecting the load resistor Rm to a positive bias voltage (like 1V) instead of to ground.

 

[mashinga]

Thanks for replies guys. They are really useful.