发明名称 |
Apparatus for protecting analog input module from overvoltage |
摘要 |
Disclosed is an apparatus for protecting an analog input module from overvoltage, the apparatus including an analog input module and a stabilization unit. The analog input module converts one of a plurality of positive/negative analog signals inputted from the outside thereof into a digital signal and insulates the converted digital signal. The stabilization unit supplies voltages of the positive/negative analog signals to the analog input module when the voltage levels of the plurality of positive/negative analog signals are higher than the levels of positive/negative operating voltages in the analog input module. |
申请公布号 |
US9036313(B2) |
申请公布日期 |
2015.05.19 |
申请号 |
US201113178341 |
申请日期 |
2011.07.07 |
申请人 |
LSIS Co., Ltd. |
发明人 |
Kwon Jae Il |
分类号 |
H03K5/08;G05B9/02 |
主分类号 |
H03K5/08 |
代理机构 |
Lee, Hong, Degerman, Kang & Waimey |
代理人 |
Lee, Hong, Degerman, Kang & Waimey |
主权项 |
1. An apparatus for protecting an analog input module, the apparatus comprising:
an analog input module configured to convert one of a plurality of positive/negative analog signals inputted from the outside thereof into a digital signal and insulate the converted digital signal; and a stabilization unit configured to supply voltages of the positive/negative analog signals to the analog input module when the voltage levels of the plurality of positive/negative analog signals are higher than the levels of positive/negative operating voltages in the analog input module, wherein the stabilization unit comprises: a plurality of first diodes configured to respectively supply the positive operating voltage to a positive power terminal of the analog input module; a plurality of second diodes configured to respectively supply the plurality of positive analog signals to the positive power terminal of the analog input module; a plurality of third diodes configured to respectively supply the negative operating voltage to a negative power terminal of the analog input module; and a plurality of fourth diodes configured to respectively supply the plurality of negative analog signals to the negative power terminal of the analog input module. |
地址 |
Anyang-Si, Gyeonggi-Do KR |