Wave shaping circuits derive the other desired waveforms — square, pulse, triangle, etc. — from the sawtoothoutput 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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Design requirements: (1) can outputsawtooth, triangle wave, sine wave, pulse wave. (2) according to the keyboard command to switch between waveforms. (3) can adjust the output waveform frequency.
An outputsawtooth thereby is produced having one endpoint determined by a fixed voltage source and the other endpoint in accord with the capacitance ratio of the timing and switched capacitors.