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Chapter 12

Transistors

Bipolartransistor
Bipolartransistor
Transistors play a vital role in electronic circuits, enabling the functionality of amplifiers, memories, and microprocessors. Transistors can be designed ...
Konfigurationen von BJT
Konfigurationen von BJT
Bipolar junction transistors have different configurations based on the common contact. The common base configuration features a shared base terminal for ...
Funktionsprinzip von BJT
Funktionsprinzip von BJT
Consider a PNP transistor in a common-base configuration, operating in active mode. Forward biasing reduces the emitter-base potential, enabling the ...
Eigenschaften von BJT
Eigenschaften von BJT
Consider the common-emitter configuration of the BJT. The voltage and current dependencies are measured experimentally to understand the current-voltage ...
Funktionsweise von BJT
Funktionsweise von BJT
A bipolar junction transistor has four modes of operation, depending upon the voltage polarities at the emitter-base junction and the collector-base ...
Frequenzgang von BJT
Frequenzgang von BJT
A common-emitter amplifier's DC bias point is determined by the base-emitter voltage, base current, and collector current. The load line is determined ...
Grenzfrequenz von BJT
Grenzfrequenz von BJT
The common base configuration's current gain is constant at low frequencies of the input signal but attenuates after a specific frequency known as the ...
Umschaltung von BJT
Umschaltung von BJT
Consider a switching circuit that involves a sudden change in the emitter-base voltage. Initially, both the base-emitter junction and the ...
BJT-Verstärker
BJT-Verstärker
In the active region of a common emitter NPN BJT, the emitter current is the sum of the base current and the collector current. Here, the base voltage ...
Kleinsignalanalyse von BJT-Verstärkern
Kleinsignalanalyse von BJT-Verstärkern
Consider a BJT  transistor amplifier circuit operating in its active region to provide linear amplification. The total instantaneous base-emitter ...
Feldeffekt-Transistor
Feldeffekt-Transistor
A field effect transistor is a three-terminal unipolar device comprising a gate, drain, and source terminal. Charge carriers flow from the source to the ...
Eigenschaften von JFET
Eigenschaften von JFET
The output characteristics of a JFET describe the relationship between the drain current and the drain-source voltage at various levels of gate-source ...
Vorspannung des FET
Vorspannung des FET
A junction field effect transistor is used in electronic circuits to control electrical currents. JFETs consist of an N-type or P-type silicon bar ...
MOS-Kondensator
MOS-Kondensator
MOS capacitors have three layers: the bottom layer is a semiconductor substrate, the middle is an insulating layer, and the top metal layer is the gate ...
MOSFET
MOSFET
The Metal-Oxide-Semiconductor Field-Effect Transistor, or MOSFET is a semiconductor device with three terminals: the Source, the Drain, and the Gate and ...
Eigenschaften des MOSFET
Eigenschaften des MOSFET
The essential parameters of MOSFETs include the channel length, the channel width, the oxide thickness, the junction depth, and the substrate doping. With ...
MOSFET: Verbesserungsmodus
MOSFET: Verbesserungsmodus
The two modes of p- and n-channel MOSFETs are enhancement and depletion. Enhancement mode MOSFETs are typically off at zero gate-source voltage, meaning ...
MOSFET: Depletion-Modus
MOSFET: Depletion-Modus
Depletion-mode MOSFETs are already ON without a gate bias but need a gate-source voltage to switch OFF. They function like JFETs, where the drain-source ...
MOSFET-Verstärker
MOSFET-Verstärker
The MOSFET operates as a voltage-controlled current source in its active region, where the gate-to-source voltage regulates the drain current. This ...
Kleinsignalanalyse von MOSFET-Verstärkern
Kleinsignalanalyse von MOSFET-Verstärkern
Consider a MOSFET transistor amplifier circuit operating in its active region to provide linear amplification. The total instantaneous gate-to-source ...
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