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图1所示附加电路能产生1～15个突发脉冲以及1～15个突发脉冲间隔,脉冲宽度(频率)由输入端的一个外接方波发生器设定。该附加电路利用外接方波发生器作为信号源,可
The additional circuit shown in Figure 1 produces between 1 and 15 bursts and between 1 and 15 burst intervals. The pulse width (frequency) is set by an external square wave generator at the input. The additional circuit using external square wave generator as a signal source can be