Pointed pulse detection circuit

Published:2011/5/11 8:48:00 Author:Nicole | Keyword: pointed pulse, detection | From:SeekIC

This detector circuit can detect the singal,the pulse width of this singalis smaller than the predetermined value, and displayed by LED. After plastic by primar inverter, the tested signal uses rising edge and falling edge to trigger monostable circuit M1, M2. The monostable width of M1, M2 is adjusted to requested previously, so if it occurs second jumping, it will be detected. If the positive pointed pulse width is smaller than set value, its rising edge trigger M1, when the monostable cycle of M1 is not finished,M2 is triggered by the falling edge, LED is lighted up. If it is negative pointed pulse, triggering M2 first, then trigger M1, the situation is similar. The push-button switch K is used to reset, and to put out LED.



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