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逢春10242757
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樓主  發(fā)表于: 2012-03-05 18:24
固態(tài)繼電器輸入DC3--32v,啟動(dòng)電流7MA,控制電流小于等于25MA，求教各位為防更高電壓竄入輸入端需配多大限流電阻��？
thawless
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1樓  發(fā)表于: 2012-03-05 20:09
最小電流為7mA =3.5V除以X
最大電流為25mA =30V除以Y
求出來(lái)的X為電阻最大值，Y為電阻最小值，電阻可取X-Y之間的值
thawless
不說(shuō)盡力而為,只能全力以赴!
級別: 網(wǎng)絡(luò )英雄

精華主題: 0
發(fā)帖數量: 742 個(gè)
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2樓  發(fā)表于: 2012-03-05 20:36
現在的固態(tài)繼電器抗干擾已經(jīng)做的很好了，根本不用串電阻，我現在都是直接加電壓，呵呵

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