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修改时间 09-17-2013 05:31 AM
我的继电器上面写的是12V的时候开关就会开我用电池做了7.5+1.5(电压表实测)的电压连上继电器就开了,反正用电池做的试验是9V以上都开了但是我用compactRio(NI9263)输出了一个10V(电压表实测)的电压他却没开然后发现那个只是analog output 测继电器两端的电压只有0.3V请教各位。该怎么样才能有9V的电压驱动继电器呢(用compactRio能够控制他的开关)
修改时间 09-17-2013 03:53 PM
你不能只考虑电压指标,更为重要的电流指标,DA的驱动能力是很小的,不能直接驱动继电器。电池属于电源,自然驱动能力比较大。
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