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The ATT10BNCS attenuator is used to extend the low frequency cut-off point by factor 10, to increase I-t (product of current and time), and to reduce droop and output factor of PMK's terminated LILCO current transformers.


The attenuation of the output of a terminated LILCO current transformer is achieved by reducing it's output resistance of the current transformer. The LILCO current transformer's internal shunt resistor is normally 50 Ω. By applying ATT10BNCS to the output of the transformer it's output in V/A is reduced by the factor of 10.

Order numberArticleAttenuation ratioAttenuation toleranceFrequency rangeOutput impedanceInput power, RMS
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ATT10BNCSWide-Band Attenuator20dB±0.25dBDC - 50MHz50Ω± 1%2.25W

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