【应用】隔离放大器NSI1311-DSWVR用于灰分仪中的应用,绝缘电压高达5000Vrms
我国是规模最大的煤炭生产国,煤炭是我国重要的能源之一,而煤炭是不可再生资源,所以对煤炭的利用效率十分重要。传统的煤炭质量检测方法十分繁琐,需要采样并通过灼烧得到灰分,即煤在充分燃烧后的氧化物的所占的质量分数。再用氧弹或者量热装置得到发热量等,这个过程需求几个小时甚至更久,大大延迟了生产的进度。而灰分仪可以利用双能γ射线照射煤流,利用可燃物质与灰分的原子序数不同,对得到的数据进行处理,就可检测出灰分。用灰分仪检测灰分,可对数据自动校准,检测时间大大减少,可以通过显示屏直观的查看数据,且可以查询历史灰分数据。
在灰分仪中,可以通过探头或传感器得到灰分数据,这些采样到的模拟数据通过运放对信号进行放大,最后由主控MCU或者FPGA对数据进行处理,整体框图如图1所示。在系统中,需要采样灰分仪射线探测器输出的电压,传输给运放放大,纳芯微电子的隔离放大器NSI1311-DSWVR就可以很好的应用在此。
图1
NSI1311-DSWVR不仅能采样电压,高达5000Vrms的绝缘电压还使其具有优秀的隔离作用。同时,NSI1311-DSWVR的低偏移误差±1.5mV和漂移-5~30μV/°C,保证了在整个温度范围内的精度。150kV/μs的高共模瞬变抗扰度也能够确保提供准确可靠的测量。NSI1311-DSWVR的优秀性能使其除了可在灰分仪上应用,还可以应用于数字电源、车载BMS和直流充电桩等。当做这些相关设计时,NSI1311-DSWVR是个不错的选择。
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可定制射频隔离器/环行器(10M-40GHz),双工器/三工器(30MHz/850MHz-20GHz),滤波器(DC-20GHz),功分器,同轴负载,同轴衰减器等射频器件;可定制频率覆盖DC~110GHz,功率最高20KW。
最小起订量: 1 提交需求>
可定制波导隔离器频率覆盖5.5GHz~110GHz,插损损低至0.25dB、隔离度、正向方向功率、封装尺寸参数。
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