| 摘要 |
PURPOSE:To reduce the current consumption and to shorten the control time of the output by using two comparators to control the output of one of both comparators with the output of the other and vice versa. CONSTITUTION:When the potential of an input terminal 2 is higher than that of an input terminal 3, an N type FET8 conducts with an N type FET9 broken successively. At the same time, P type FET6 and 7 conduct and the potential of a power supply terminal 1 appears at an output 5. In this case, the potential equal to the output 5 is applied to the gate of a P type FET16. Therefore the FET16 is broken. As a result, a comparator 22 has no actuation and the output of the comparator 22 is floating. When the potential of the terminal 2 is lower than that of the terminal 3, the FET9 conducts with the FET8 broken. Then the FET6 and 7 are broken and therefore the output of a comparator 21 is reduced. As a result, the FET16 conducts to actuate the comparator 22. Then N type FET19 and 20 conduct, and the potential of a power supply terminal 4 appears at the output 5. This potential is also applied to the gate of an FET14 and this FET14 is broken. As a result, the comparator 21 stops its actuation and the output of the comparator 21 is floating. |
