Wave transmission lines and networks – Attenuators
Patent
1994-08-15
1996-04-09
Gensler, Paul
Wave transmission lines and networks
Attenuators
333 81A, H03H 724
Patent
active
055065503
ABSTRACT:
An attenuator for use with a current transformer. The attenuator includes an input voltage terminal, an input ground terminal, an output voltage terminal, an output ground terminal, an input resistive arm, a shunt resistive arm, an output resistive arm, and a compensation circuit. The input and output ground terminals are coupled together. The input resistive arm has a first end coupled to the input voltage terminal and a second end. The output resistive arm has a first end coupled to the output voltage terminal and a second end coupled to the second end of the input resistive arm. The shunt resistive arm has a first end coupled to the input and output ground terminals and a second end coupled to the second ends of the input and output resistive arms. The shunt resistive arm has a shunt resistance and an intrinsic inductance effectively in series with the resistance. The compensation circuit has a first end coupled to the input and output ground terminals and a second end coupled to the second ends of the input, output, and shunt resistive arms. The compensation circuit has an impedance selected to reduce output voltage overshoot across the output voltage and output ground terminals caused by the intrinsic inductance of the shunt resistive arm in response to an input voltage provided by the current transformer across the input voltage and input ground terminals.
REFERENCES:
patent: 3146417 (1964-08-01), Pearson
patent: 4968901 (1990-11-01), Shacter
patent: 5191303 (1993-03-01), Porter et al.
Gensler Paul
Pearson Electronics, Inc.
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