Wave shaping circuits derive the other desired waveforms — square, pulse, triangle, etc. — from the sawtooth output by the core circuit.

波整形电路从核心电路的锯齿波得到其他想要的波形——方波，脉冲波，三角波。

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Pulse width Modulation device is a circuit which can produce square wave signal with fixed period and adjustable pulse duration ratio (pulse width).

脉宽调制器是一种能够产生周期固定而占空比(脉宽)可调的方波信号的电路。

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It can measure not only the sine wave, square wave, triangle wave, a sharp pulse but also can measure other characteristics of the signal wave.

它不仅可以测量正弦波、方波、三角波、尖脉冲信号和其他具有周期特性的信号的频率，而且还可以测量它们的周期。

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