NI PXIe-2790功率组合器和开关模块
1.产 品 介 绍
品牌：NI
型号：NI PXIe-2790
产品说明：功率组合器和开关模块
优势：供应进口原装正品，专业停产配件。
2.产 品 详 情 资 料：
NI PXIe-2790使用公式平均功耗=电压降x电流消耗（以安培为单位）x接通时间百分比（以十进制表示）：1.5 x 1.0 x 0.10=0.15瓦每个螺线管然后将此结果乘以2，因为我们有两个相同的螺线管：0.15瓦x 2个螺线管=0.30瓦两个螺线管的总功率。在本示例中，该16点模块上的其他14个输出点操作操作员面板上的指示灯。每个指示灯需要0.05安培的电流。7个指示灯100%亮起，7个预计40%亮起。NI PXIe-2790对于100%时间亮起的7盏灯：1.5 x 0.05 x 1.00=0.075瓦每盏灯然后将该值乘以7:0.075瓦x 7盏灯=前7盏灯的总功耗0.525瓦对于40%时间亮起7盏灯：1.5x 0.05 x 0.40=.03瓦每盏灯接着将该值除以7:0.03瓦x 7灯=其他7盏灯的功耗0.21瓦相加单独计算，我们得到：0.30+0.525+0.21=1.035瓦，用于模块的总输出计算NI PXIe-2790
Use the formula Average Power Dissipation = Voltage Drop x Current Draw (in Amps) x Percent (expressed as a decimal) of on-time: 1.5 x 1.0 x 0.10 = 0.15 watts per solenoid Then multiply this result by 2 since we have two identical solenoids: 0.15 watts x 2 Solenoids = 0.30 watts total for the two solenoids Also in this example, the other 14 output points on this 16-point module operate pilot lights on an operator’s panel. Each pilot light requires .05 Amps of current. NI PXIe-2790Seven of the pilot lights are on 100% of the time and seven are on an estimated 40%. For the 7 lights that are on 100% of the time: 1.5 x .05 x 1.00 = 0.075 watts per light Then multiply this value by 7: 0.075 watts x 7 lights = 0.525watts total dissipation for the first 7 lights For the 7 lights that are on 40% of the time: 1.5 x .05 x 0.40 = .03 watts per light Then multiply this value by 7: 0.03 watts x 7 lights = 0.21 watts total dissipation for the other 7 lights Adding up the individual calculations, we get: 0.30 + 0.525 + 0.21 = 1.035 watts for the module’s total output calculationNI PXIe-2790
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