Variable attenuation network with constant input and output resistances
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United States of America Patent
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-
Feb 11, 1992
Grant Date -
N/A
app pub date -
May 19, 1989
filing date -
May 19, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An attenuation network comprises a T or a .pi. network and first and second regulating circuits for controlling it. The T or .pi. network has at least two variable resistances. A switch S1 permits selection of a desired attenuation value which is set through the operation of the second regulating circuit on the T or .pi. network, while the first regulating circuit acts on the T or .pi. network such that its input and output resistances are kept constant.
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