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发表于 2016-3-1 10:35:15
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这几天偶然看到安森美的一个芯片,是不是可以实现这个功能,有人用过吗?
型号:NCS37000-D,NCS37012-D
Self Test Ground Fault
Circuit Interrupter (GFCI)
Description
The NCS37012 is a fully UL943 compliant signal processor for
GFCI applications with self test. The device integrates a flexible
power supply (including both shunt and LDO regulators), differential
fault, and grounded-neutral detection circuits. Proprietary impedance
measurement and signal processing techniques are used to minimize
the number of external components and improve performance. The
device also includes a specialized DSP controller that offers best in
class immunity to nuisance loads without the need for external analog
filters. Self test is monitored every 17 minutes through an external
current path and internally generated grounded neutral fault |
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