| 摘要 |
PURPOSE:To obtain a switch circuit which can be controlled easily to turn ON-OFF by constituting a positive feedback circuit by using at least more than three transistors including a Darlington circuit of complementary transistor circuits and by controlling at least one base of a transistor. CONSTITUTION:This circuit has the Darlington circuit composed of the 1st and 2nd complementary transistors 1 and 2, and the 3rd transistor 3 constituting the positive feedback circuit with the Darlington circuit by connecting the collector and base of the circuit to its base and collector. As a result, a switch circuit can be obtained, which is able to make easily the ON-OFF control of all circuits, by turning ON-OFF either the 1st or 3rd transistor at least. |
