DE4317188A1

DE4317188A1 - Special flipflop

Info

Publication number: DE4317188A1
Application number: DE19934317188
Authority: DE
Inventors: Paul Merkle
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-21
Filing date: 1993-05-22
Publication date: 1995-02-09

Abstract

The special flipflop according to the subject matter of the invention differs from the special flipflop according to the main patent application in that the additional transistors are arranged as blocking transistors and are thus arranged in the drive line of the transistors 1 and 2. The effect of the transistors 3 and 4 in these flipflops is to inhibit the outflow of drive current, because these transistors are switched off for an H-potential drive. <IMAGE>

Description

Gegenstand der Erfindung ist ein Spezial-Flip-Flop, das 2 zusätzliche Transistoren aufweist, mittels denen vermieden wird, daß der Impuls-Strom teilweise ins Null-Potential abfließt. Die Type A dieses Spezial-Flip-Flops ist in Fig. 1 dargestellt. Die Type B dieses Spezial-Flip-Flops ist in Fig. 2 dargestellt.The invention relates to a special flip-flop which has 2 additional transistors, by means of which it is avoided that the pulse current partially flows to zero potential. The type A of this special flip-flop is shown in Fig. 1. The type B of this special flip-flop is shown in Fig. 2.

Das Spezial-Flip-Flop Type A (Fig. 1) besteht aus den Tran sistoren 1 bis 4 und den Widerständen 5 und 6 und den zu gehörigen Leitungen. Die Impuls-Eingänge haben die Bezeichnungen a und b und die Ausgänge die Bezeichnungen c und d. Die Betriebsstrom-Zuleitung hat die Bezeichnung e und die Null- Leitung die Bezeichnung f. Die Transistoren 1 und 2 sind leitend, wenn sie an ihrer Basis mit H-Potential angesteuert werden. Die Transistoren 3 und 4 sind sperrend, wenn sie an ihrer Basis mit H-Potential angesteuert werden.The special flip-flop type A ( Fig. 1) consists of the transistors 1 to 4 and the resistors 5 and 6 and the associated lines. The pulse inputs are labeled a and b and the outputs are labeled c and d. The operating current supply line has the designation e and the zero line has the designation f. Transistors 1 and 2 are conductive when they are driven at their base with H potential. The transistors 3 and 4 are blocking when they are driven with H potential at their base.

Die Wirkungsweise dieses Spezial-Flip-Flops Type A ergibt sich wie folgt: Wenn sich dieses Flip-Flop in seiner Rechts- Stellung befindet und somit der Ausgang d H-Potential hat und am Eingang a ein H-Impuls eingeht, werden die Transistoren 2 und 3 an ihrer Basis mit diesem H-Impuls angesteuert. Damit ist der Transistor 2 leitend und der Transistor 3 sperrend und wird mittels des Transistors 3 vermieden, daß der Impulsstrom teilweise oder mit einem Anteil von mehr als die Hälfte über den Transistor 1 ins Null-Potential abfließt. Somit wird mittels den Transistoren 3 und 4 vermieden, daß die Spannung des Ansteuer-Impulses verlorengeht, weil der Impuls-Strom über den Transistor 1 oder über den Transistor 2 ins Null-Potential abfließt. The operation of this special flip-flop type A is as follows: If this flip-flop is in its right position and thus the output d has H potential and an H pulse is received at input a, the transistors 2 and 3 controlled at their base with this H pulse. The transistor 2 is thus conductive and the transistor 3 is blocking and is avoided by means of the transistor 3 that the pulse current partially or with a portion of more than half flows through the transistor 1 to zero potential. It is thus avoided by means of transistors 3 and 4 that the voltage of the drive pulse is lost because the pulse current flows through transistor 1 or via transistor 2 to zero potential.

Das Spezial-Flip-Flop Type B (Fig. 2) ist mit 2 zusätzlichen Negier-Schaltungen 7 und 8 versehen und hat nur normale Transistoren, welche leitend sind, wenn ihre Basis mit H-Potential angesteuert wird. Bei diesem Spezial-Flip-Flop Type B (Fig. 2) sind somit die Transistoren 1 bis 4 dann leitend, wenn sie an ihrer Basis mit H-Potential angesteuert werden.The special flip-flop type B ( FIG. 2) is provided with 2 additional negation circuits 7 and 8 and has only normal transistors which are conductive when their base is driven with H potential. In this special flip-flop type B ( FIG. 2), the transistors 1 to 4 are conductive when they are driven at their base with H potential.

Claims

1. Electronic flip-flop, which has 4 transistors, characterized in that the transistors ( 3 and 4 ) are arranged as blocking transistors, by means of which it is avoided that part of the drive pulse current through the other main transistor ( 1 or 2 ) flows to zero potential.

2. Electronic flip-flop according to claim 1, characterized in that the transistors ( 1 and 2 ) are normal transistors, which are conductive at H potential control and are blocking at L potential control and that the transistors ( 3 and 4 ) are abnormal transistors which are conductive in the case of L potential control and are blocking in the case of H potential control.

3. Electronic flip-flop according to claim 1, characterized in that only normal transistors are used as transistors ( 1 to 4 ) which are conductive at H-potential control and are blocking at L-potential control and that Transistors ( 3 and 4 ) are properly brought to the effect that the negation circuits ( 7 and 8 ) are additionally arranged.