LEM Voltage Transducer LV 25P

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Sam0014

Joined Jan 21, 2013
3
hi,
i have the following Circuit with LEM Voltage Transducer LV 25P, Please See the Picture.
The input of the circuit must be form the line voltage (230 V Sinus), and the output must be 8 Volt, also Sinus.
I connected my Circuit with Different Voltage Values, from 35 V till 230 V but every time i got a several mV on the Oscilloscope.
Can somebody please tell me if the Circuit is correct or not?
Thanks
 

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Thread Starter

Sam0014

Joined Jan 21, 2013
3
The power rating of both resistor is 3W.

I tried not just with the oscilloscope to measure the output, but i got always just a little mV.
And for different Voltage values i got the same output
 
hi,
i tried to sense 80 V dc using lv-25p, i initially tried for voltage value of 10V.but i am not obtaining voltage on the secondary side,
primary side resistance is 10k ohm 10W, and my secondary side resistance in 150 ohm, i designed them to obtain a voltage of 3V on the secondary side.
i tried varying the input but there is no change in the secondary side, also my dso is showing negative value..??
 
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