电路图如图所示,当输出不接负载的时候输出电压在30V左右,不论输入多少V都是这样,是否需要加假负载?假负载应该加多少合适?
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电路图如图所示,当输出不接负载的时候输出电压在30V左右,不论输入多少V都是这样,是否需要加假负载?假负载应该加多少合适?