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Chapter 12

Transistors

Transistor a Giunzione Bipolare
Transistor a Giunzione Bipolare
Transistors play a vital role in electronic circuits, enabling the functionality of amplifiers, memories, and microprocessors. Transistors can be designed ...
Configurazioni di BJT
Configurazioni di BJT
Bipolar Junction Transistors (BJTs) are categorized into various types based on their configurations, each with distinct characteristics and applications. ...
Principio di Funzionamento del BJT
Principio di Funzionamento del BJT
Consider a PNP transistor in a common-base configuration, operating in active mode. Forward biasing reduces the emitter-base potential, enabling the ...
Caratteristiche del BJT
Caratteristiche del BJT
Consider the common-emitter configuration of the BJT. The voltage and current dependencies are measured experimentally to understand the current-voltage ...
Modalità di Funzionamento del BJT
Modalità di Funzionamento del BJT
A bipolar junction transistor has four modes of operation, depending upon the voltage polarities at the emitter-base junction and the collector-base ...
Risposta in Frequenza del BJT
Risposta in Frequenza del 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 ...
Frequenza di taglio del BJT
Frequenza di taglio del 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 ...
Cambio di BJT
Cambio di BJT
Consider a switching circuit that involves a sudden change in the emitter-base voltage. Initially, both the base-emitter junction and the ...
Amplificatori BJT
Amplificatori BJT
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 ...
Analisi dei Piccoli Segnali degli Amplificatori BJT
Analisi dei Piccoli Segnali degli Amplificatori BJT
Small signal analysis is a fundamental approach used in electronics to understand how a Bipolar Junction Transistor (BJT) amplifier processes signals. In ...
Transistor ad Effetto di Campo
Transistor ad Effetto di Campo
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 ...
Caratteristiche dei JFET
Caratteristiche dei 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 ...
Polarizzazione dei FET
Polarizzazione dei 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 ...
condensatore MOS
condensatore MOS
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 ...
Caratteristiche del MOSFET
Caratteristiche del 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: Modalità Potenziata
MOSFET: Modalità Potenziata
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the ...
MOSFET: Modalità Impoverimento
MOSFET: Modalità Impoverimento
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 ...
I Transistor
I Transistor
The MOSFET operates as a voltage-controlled current source in its active region, where the gate-to-source voltage regulates the drain current. This ...
i Transistor
i Transistor
In small-signal analysis, a MOSFET transistor amplifier acts as a linear amplifier when operating in its saturation region. The gate-to-source voltage ...
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