Isolation circuitry for transmitter electronics in process control system
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United States of America Patent
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Mar 11, 1997
Grant Date -
N/A
app pub date -
Jul 28, 1995
filing date -
Jul 28, 1995
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A transmitter in a process control system includes isolation circuitry which isolates transmitter electronics from a sensor bridge circuit. The isolation circuitry includes high impedance isolators in series with high impedance buffers to electronically isolate the transmitter electronics from the bridge. A power supply is isolated using a series of capacitors connected to a periodic signal.
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