hello
I am using a differential transformer to sense unbalanced lines.
When it happens the toroid (differential transformer) induce a current and so a voltage accross the terminals of the differential transformer.
for currents as low as 26 mA ac induce a voltage of 129 mV ac and for currents of 830 mA, it induces a voltage of 7 V ac.
I would like to measure this signal to prevent electrical damage on communication equipments. But I have no idea of this kind of electrical considerations, I have never done a design with this kind of transformers.
When I put a resistor of 98Kohms between the two terminal in ordet to measure just the voltage so in this way I supposed not to demand current to the transformer, the measured values changed.
Asking about this matter, someone told me that for this toroids large resistors can saturate the core of the toroid, but a lower resistor can avoid it.
Does any one can help me how to read the induced voltage in a differential transformer.
Thanks in advanced
I am using a differential transformer to sense unbalanced lines.
When it happens the toroid (differential transformer) induce a current and so a voltage accross the terminals of the differential transformer.
for currents as low as 26 mA ac induce a voltage of 129 mV ac and for currents of 830 mA, it induces a voltage of 7 V ac.
I would like to measure this signal to prevent electrical damage on communication equipments. But I have no idea of this kind of electrical considerations, I have never done a design with this kind of transformers.
When I put a resistor of 98Kohms between the two terminal in ordet to measure just the voltage so in this way I supposed not to demand current to the transformer, the measured values changed.
Asking about this matter, someone told me that for this toroids large resistors can saturate the core of the toroid, but a lower resistor can avoid it.
Does any one can help me how to read the induced voltage in a differential transformer.
Thanks in advanced