| 摘要 |
PURPOSE:To obtain a circuit whose characteristic is immune to fluctuation against a temperature change or a power supply voltage change suitable for circuit integration by activating a time constant circuit deciding the period of an output binary signal (timing signal) with the logical operation output between an inputted binary signal and an output binary signal. CONSTITUTION:A level of an output terminal 6 of a comparator 13 keeps a high level until a level at a terminal 5 exceeds a level of a +input 7 of the comparator 13 and since one input to an NOR circuit 12 is at a high level, an output terminal 9 of the NOR circuit 12 keeps a low level even if a transistor (TR) Q1 is turned on/off during this time and TRs Q4, Q11 keep the off-state, then the level of the output terminal 6 keeps the low level. When the level at the terminal 5 exceeds the level of the input 7, the output 6 of the comparator 13 is inverted to a low level and when the level of a line 8 is decreased to the low level, since the TRs Q4, Q11 is turned on, a capacitor C1 is brought again into the initial state. |
