DE2004462C - Amplifier circuit with at least one transistor in a common emitter circuit - Google Patents
Amplifier circuit with at least one transistor in a common emitter circuitInfo
- Publication number
- DE2004462C DE2004462C DE19702004462 DE2004462A DE2004462C DE 2004462 C DE2004462 C DE 2004462C DE 19702004462 DE19702004462 DE 19702004462 DE 2004462 A DE2004462 A DE 2004462A DE 2004462 C DE2004462 C DE 2004462C
- Authority
- DE
- Germany
- Prior art keywords
- diode
- transistor
- emitter
- voltage
- amplifier circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000004020 conductor Substances 0.000 claims 2
- 230000003321 amplification Effects 0.000 claims 1
- 230000001419 dependent Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Description
Dies bedeutet, daß bei gleichen Eigenschaften der änderung der Temperaturverhälinisse bedingt ist,This means that, given the same properties, the change in temperature conditions is
Diode D und der Basis-Emitter-Diode des Tran- keine Veränderung der Ausgangsspannung.Diode D and the base-emitter diode of the Tran- no change in the output voltage.
sistors T1 der Diodenstrom so groß wie der Kollektor- Es wurde bereits angegeben, daß die Eigenschaftensistor T 1 the diode current as large as the collector It has already been stated that the properties
strom Ie ist. Es gilt dann: der Diode D denen der Basis-Emitter-Diode des Tran-current Ie is. It then applies: he d diode D which the base-emitter diode of the transit
/_/ Hl 5 sistors möglichst entsprechen müssen. Dies ist be-/ _ / Hl 5 sistors must be as close as possible. This is
"" 1^ sonders dann der Fall, wenn die Diode durch einen"" 1 ^ especially the case when the diode is replaced by a
Ut ist die sogenannte Temperaturspannung, /, der Transistor T2 gemäß F i g. 2 ersetzt wird, der als Sperrstrom der Diode und « die Stromverstärkung. Diode betrieben wird. Hierzu wird die Kollektor- Ut is the so-called temperature voltage, /, the transistor T 2 according to FIG. 2 is replaced as the reverse current of the diode and «the current gain. Diode is operated. For this purpose, the collector
Die genannten Kennlinienverhältnisse haben dann elektrode des Transistors T1 mit der Basiselektrode
Gültigkeit, wenn der Transistor nicht im Übersteue- 10 kurzgeschlossen. Wenn die beiden Transistoren des
rungsbereich betrieben wird. Die Widerstände A1 und Verstärkers in einem Halbleiterfestkörper in inte-
R2 werden vorzugsweise gleich groß gewählt, oder R2 grierter Schaltungstechnik realisiert werden, hat man
wird kleiner als R1 gewählt, um bei einer gegensinnigen die Gewißheit, daß die elektrischen Eigenschaften der
Veränderung der Widerstandswerte eine möglichst · beiden Transistoren übereinstimmen,
große Änderung der Ausgangsspannung zu erhalten. 15 An die Verstärkerschaltung 1 wird beispielsweiseThe above-mentioned characteristic ratios are valid between the electrode of the transistor T 1 and the base electrode if the transistor is not short-circuited in the override 10. When the two transistors of the range is operated. The resistors A 1 and amplifier in a solid semiconductor body in integrated R 2 are preferably chosen to be the same size, or R 2 is implemented with integrated circuit technology, if one has chosen to be smaller than R 1 , in order to be certain that the electrical properties of the change in the event of an opposite direction the resistance values of one of the two transistors as possible match,
to get large change in output voltage. 15 To the amplifier circuit 1, for example
Wenn nun beispielsweise die Widerstände R1 und R2 ein Schwellwertschalter 2 angeschlossen, der beim Magnetdioden sind und sich der Widerstand von R2 Erreichen eines bestimmten Potentials an der KoUekunter dem Einfluß eines äußeren Feldes verkleinert, torelektrode des Transistors T1 seinen Schaltzustand wird die Diodenspannung etwas größer. Die Folge ändert. Dieser Schwellwertverstärker wird beispielsdavon ist, daß sich die Basis-Emitter-Spannung am ao weise, wie dies in der F i g. 2 dargestellt ist, von Transistor T1 vergrößert und die Kollektor-Emitter- einem Schmitt-Trigger gebildet. Der Schmitt-Trigger Spannung am Ausgang des Transistors kleiner wird. setzt sich beispielsweise aus den beiden Komplemen-Zugleich wird der Widerstand A1 unter dem Einfluß tärtransistoren T3 und Tt zusammen, die galvanisch des äußeren Feldes größer. Die Widerstandsgerade im miteinander gekoppelt sind. Der Emitterwiderstand Rs Kennlinienfeld wird also flacher und die Kollektor- 25 des Transistors T3 ist zugleich Teil eines Spannungs-Emitter-Spannung noch kleinen Man sieht also, daß teilers aus den Widerständen R3, A4 und A5. Die Versich die Änderungen der Widerstandswerte in ihnr bindung zwischen den Widerständen A3 und A1 ist Wirkung auf die Ausgangsspannung addieren. Eine über den Widerstand A6 an den Emitter des Transi-Anderung von A1 und die gegensinnige Änderung von stors T1 angeschlossen, dessen Kollektorelektrode A2 bewirken somit eine Spannungsänderung an der 30 über den Kollektorwiderstand A7 an Masse liegt. Der Kollektor-Emitter-Strecke des Transistors bzw. am Ausgangstransistor Ts dient zur weiteren Strom-Widerstand A1, die größer ist als bei einer entsprechen- verstärkung.If, for example, the resistors R 1 and R 2 are connected to a threshold switch 2, which is at the magnetic diode and the resistance of R 2 is reduced when reaching a certain potential at the KoUek under the influence of an external field, the gate electrode of the transistor T 1 its switching state becomes the diode voltage a little bigger. The episode changes. This threshold amplifier is exemplified by the fact that the base-emitter voltage at the ao is as shown in FIG. 2 is shown, enlarged by transistor T 1 and formed the collector-emitter a Schmitt trigger. The Schmitt trigger voltage at the output of the transistor becomes smaller. If, for example, the two complements-Simultaneously, the resistance A 1 is composed under the influence of tärtransistors T 3 and T t , which galvanically of the external field is greater. The straight lines of resistance im are coupled with each other. The emitter resistor R s of characteristics is thus flat and the collector 25 of the transistor T 3 is also part of a voltage-to-emitter voltage is still small It is thus seen that the divider of the resistors R 3, A 4 and A. 5 The assurance of the changes in the resistance values in the connection between the resistors A 3 and A 1 is the effect of adding up the output voltage. One connected via resistor A 6 to the emitter of the transi-change of A 1 and the opposite change of stors T 1 , the collector electrode A 2 of which thus causes a voltage change at which 30 is connected to ground via collector resistor A 7. The collector-emitter path of the transistor or at the output transistor T s is used for further current resistance A 1 , which is greater than with a corresponding gain.
den Brückenschaltung, wenn dort die gleichen Wider- Die Temperaturabhängigkeit der Basis-Emitter-Spanstandsänderungen auftreten. _ nung des Transistors T3 wird fast ganz durch denthe bridge circuit if the same resistance occurs there. _ tion of the transistor T 3 is almost entirely due to the
Dagegen bewirkt eine gleichsinnige Änderung der 35 Temperaturgang der Basis-Emitter-Spannungen der Widerstandswerte, die beispielsweise durch eine Ver- Transistoren T1 und T2 kompensiert.On the other hand, a change in the temperature response of the base-emitter voltages of the resistance values in the same direction, which is compensated for by a transistors T 1 and T 2, for example.
Hierzu 1 Blatt Zeichnungen1 sheet of drawings
Claims (6)
in Reihe geschaltete Widerstand mit der Ver- Zur Lösung dieser Aufgabe wird bei einem Versorgungsspannungsquelle verbunden ist, d a- 15 stärker der oben geschilderten Art erftndungsgemäß durch gekennzeichnet, daß die beiden vorgeschlagen, daß die beiden Widerstände (A1, R1) Widerstände (R1, R2) derart dimensioniert sind, derart dimensioniert sind, daß der Strom durch den daß der Strom durch den Spannungsteiler im Spannungsteiler im wesentlichen dem Kollektorstrom wesentlichen dem Kollektorstrom des Transistors des Transistors entspricht, und daß die Widerstands entspricht, und daß die Widerstandswerte der ao werte der Widerstände (A1, R1) durch äußeren Ein Widerstände (A1, A1) durch äußeren Einfluß fluß zueinander gegenläufig veränderbar sind,
zueinander gegenläufig veränderbar sind. Als durch äußeren Einfluß veränderbare Wider-Standes consists with a diode, the diode of the present invention, the task is at the same time in parallel to the base-emitter diode of the reason to specify an amplifier that is wired in its transistor, while the structure of the diode is simple and not temperature-dependent
In order to solve this problem, a supply voltage source is connected, which is more of the type described above, according to the invention, characterized in that the two proposed that the two resistors (A 1 , R 1 ) resistors ( R 1 , R 2 ) are dimensioned in such a way that the current through which the current through the voltage divider in the voltage divider essentially corresponds to the collector current essentially corresponds to the collector current of the transistor of the transistor, and that the resistance corresponds, and that the resistance values the ao values of the resistances (A 1 , R 1 ) can be changed in opposite directions due to external on resistances (A 1 , A 1 ) due to external influence,
are mutually variable in opposite directions. As resistance that can be changed by external influence
vergrößert. 30 Bekannte Schwellwertverstärker bestehen größten-2. Amplifier circuit according to claim 1, there come magnetic diodes, cold conductors and thermistors, characterized in that the two resistors are possible. If the two resistors, for example, would (R 1 , A 2 ) consist of magnetic diodes, which consist of magnetic diodes, then these are spatially arranged so that when there is a change, they are so arranged that when there is a change in the on the on the diodes the magnetic field acting on the diodes the magnetic field acting on the field the ohmic resistance dir a diode ohmic resistance of one diode decreases, while that of the other diode increases while that of the other diode increases,
enlarged. 30 Known threshold amplifiers consist of the greatest
dessen Kollektorstrecke ein Widerstand geschaltetThe invention relates to an amplifier circuit consisting of a diode of the transistor T 1 connected. The well-known diode equation applies to the diode at least one transistor in the emitter circuit, in 60 forward current:
whose collector path is connected to a resistor
gleichsinnig parallel zur Basis-Emitter-Diode des
Transistors geschaltet ist, während der zur Diode in Übe = Ut In (/c/<x · /, + 1). (2)Voltage divider from the series connection of a resistor 65 emitter diode of the transistor T 1 for which the resulting consists of a diode, the diode-speaking equation applies:
in the same direction parallel to the base-emitter diode of the
Transistor is switched, while the to the diode in Übe = Ut In (/ c / <x · /, + 1). (2)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702004461 DE2004461C (en) | 1970-01-31 | Amplifier circuit | |
DE19702004462 DE2004462C (en) | 1970-01-31 | Amplifier circuit with at least one transistor in a common emitter circuit | |
FR7046909A FR2075099A5 (en) | 1970-01-31 | 1970-12-28 | |
US00110550A US3708700A (en) | 1970-01-31 | 1971-01-28 | Amplifier circuit |
US110882A US3706047A (en) | 1970-01-31 | 1971-01-29 | Amplifier circuit |
GB2042771A GB1367346A (en) | 1970-01-31 | 1971-04-19 | Amplifier circuit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702004461 DE2004461C (en) | 1970-01-31 | Amplifier circuit | |
DE19702004462 DE2004462C (en) | 1970-01-31 | Amplifier circuit with at least one transistor in a common emitter circuit |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2004462A1 DE2004462A1 (en) | 1971-08-12 |
DE2004462B2 DE2004462B2 (en) | 1972-05-10 |
DE2004462C true DE2004462C (en) | 1972-12-28 |
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