| 摘要 |
PURPOSE:To eliminate chattering by constituting a circuit generating a single pulse which operates a succeeding circuit at the rise of the first pulse of an input signal including chattering. CONSTITUTION:The input signal including chattering from a terminal 5 is supplied to an edge pulse generating circuit 30 directly and through a delay circuit 17. The generating circuit 30 outputs edge pulses 7 and 8 which rise by the rise and the fall of the input signal. A one shot pulse generating circuit 40 to which the edge pulse 8 is given outputs a one shot pulse 9 which rises at the rise of the pulse 8 and has a certain duration. An AND circuit 20 to which pulses 9 and 7 are given outputs a single pulse 11. The succeeding circuit starts the operation without malfunction by this single pulse 11. Thus, chattering is eliminated from the input signal. |
