描述
當輸出口連接電感類設(shè)備時,為了防止電路關(guān)斷時刻產(chǎn)生高壓對輸入、輸出口造成破壞,應(yīng)在感性元件兩端加保護元件。對于直流電源,應(yīng)并接續(xù)流二極管,對于交流電路應(yīng)并接阻容電路。阻容電路中電阻可取51~120Ω,電容取0.1~0.47μF,電容的額定電壓應(yīng)大于電源的峰值電壓。續(xù)流二極管可選1A的管子,其額定電壓應(yīng)大于電源電壓的3倍。圖1為輸入輸出口的保護示意圖。
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