描述
当输出口连接电感类设备时,为了防止电路关断时刻产生高压对输入、输出口造成破坏,应在感性元件两端加保护元件。对于直流电源,应并接续流二极管,对于交流电路应并接阻容电路。阻容电路中电阻可取51~120Ω,电容取0.1~0.47μF,电容的额定电压应大于电源的峰值电压。续流二极管可选1A的管子,其额定电压应大于电源电压的3倍。
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