| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a differential amplifier circuit with hysterisis capable of setting a hysterisis width to a desired size. SOLUTION: In first and second transistors 1 and 2 for performing differential amplification, collectors are both bisected, one collector of the first transistor 1 is connected to the collector of a fifth transistor and the collector of a third transistor 3 constituting a current mirror circuit as an active load through a first diode 25 and one collector of the second transistor 2 is connected to the collector of a sixth transistor 6 and the collector of a forth transistor 4 through a forth diode 28. By temporarily shunting a part of a collector current respectively when the first transistor 1 is turned to an operation state and when the second transistor 2 is turned to the operation state, the hysterisis is generated.</p> |
