发明名称 |
RF ADAPTER FOR FIELD DEVICE WITH VARIABLE VOLTAGE DROP |
摘要 |
<p>A wireless adapter for use in a two- wire process control loop (22) includes wireless communication circuitry and first and second terminals configured to couple in series with the two-wire process control loop (22). A regulator (152) having a regulated input is coupled to the first terminal and an output. A shunt (154) is coupled to the output of the regulator (152) and is configured to provide power to the wireless communication circuitry. A feedback circuit (158) is configured to control current flowing from the regulator (152) to the shunt (154) as a function of a loop current flowing through the two- wire process control loop (22).</p> |
申请公布号 |
WO2009154756(A1) |
申请公布日期 |
2009.12.23 |
申请号 |
WO2009US03636 |
申请日期 |
2009.06.17 |
申请人 |
ROSEMOUNT INC.;KIELB, JOHN, A. |
发明人 |
KIELB, JOHN, A. |
分类号 |
G05B15/02;G05B23/02 |
主分类号 |
G05B15/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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