描述
矩阵输出如图8所示为4×4矩阵输出电路，用8个输出点可控制16个负载。要使某个负载接通工作，只要它所在的行与列对应的输出继电器接通即可。例如，当Y010与Y004同时接通时，KM1得电吸合。应当注意的是：当只有某一行对应的输出继电器接通，各列对应的输出继电器才可以任意接通；或者当只有某一列对应的输出继电器接通，各行对应的输出继电器才可以任意接通。否则将会错误接通负载。因此，采用矩阵输出时，必须将同一时间段接通的负载安排在同一行或同一列中，否则将无法控制。
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