| 摘要 |
PURPOSE:To prevent the malfunction of the circuit driven with the output of monostable multivibrator, by obtaining specified output level at all times if no-signal state is caused due to the interruption of input. CONSTITUTION:When the signal (a) is fed to the NAND circuit N1 in a given period, Vx of the integration circuit CKT [where; Vx gives the averaged output of the levels V1, V2 of the NAND circuit N3 and Vx=V1tau+V2(T-tau)/T.R2/R1+R2] is set to be smaller than VTH (where; VTH is a threshold value of the NAND circuit N4), so that the pulse output having the pulse width determined by the delay time of the delay circuit DL is obtained from the NAND circuit N4, and when the output of the NAND circuit N1 is continuously High, although the output of the NAND circuit N3 is High or Low, the output of the NAND circuit N4 is always at Low. |
