| 摘要 |
PURPOSE:To eliminate chattering due to noise without varying a threshold value by providing a delay circuit, a flip-flop circuit, and a selecting circuit, and inhibiting an output from responding to input signal variation for a specific time after the output varies with an input signal. CONSTITUTION:This describes the improvement of a waveform shaping circuit which shapes the waveform of the binary signal, etc., causing chattering, and this circuit has the flip-flop circuit 1, delay circuit 2 which inputs a signal regarding the output of this flip-flop 1 and delays it by a specific time tau, and the selecting circuit which transmits variation of the input signal Vi to the input of the flip-flop circuit 1 corresponding to the output signal of this delay circuit 2. In the waveform shaping circuit of this constitution, the output of the selecting circuit 3 is controlled with the output of the delay circuit 2 for the specific time tau after the output v0 varies owing to variation of the input signal Vi even if the input signal Vi varies, and the output is applied to the input of the flip-flop circuit 1 so that the output is in a hold state, thereby obtaining an output waveform having no chattering. |
