发明名称 |
An intrinsically safe circuit and a method of operating an intrinsically dage circuit |
摘要 |
A circuit for supplying power to an intrinsically safe circuit having a power supply and output terminals includes an integrated current source feedback and current limiting element. Voltage limiting circuitry between the power supply and the output terminals limits the voltage across a load. Current limiting circuitry includes barrier resistors which convert current to voltage for input to an operational amplifier comparing a reference voltage with the voltage level representing the load current and providing a control input signal to a transistor for limiting a current applied to the load. |
申请公布号 |
HK1055852(A1) |
申请公布日期 |
2007.12.28 |
申请号 |
HK20030108134 |
申请日期 |
2003.11.10 |
申请人 |
MICRO MOTION, INC. |
发明人 |
MANSFIELD, WILLIAM, M. |
分类号 |
H02H;H02H9/02;G05F;G05F1/569;G05F1/66;H02H9/00;H02H9/04 |
主分类号 |
H02H |
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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