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Chapter 12

Transistors

Transistor de unión bipolar
Transistor de unión bipolar
Transistors play a vital role in electronic circuits, enabling the functionality of amplifiers, memories, and microprocessors. Transistors can be designed ...
Configuraciones de BJT
Configuraciones de BJT
Bipolar junction transistors have different configurations based on the common contact. The common base configuration features a shared base terminal for ...
Principio de funcionamiento de BJT
Principio de funcionamiento de BJT
Consider a PNP transistor in a common-base configuration, operating in active mode. Forward biasing reduces the emitter-base potential, enabling the ...
Características de BJT
Características de BJT
Consider the common-emitter configuration of the BJT. The voltage and current dependencies are measured experimentally to understand the current-voltage ...
Modos de operación de BJT
Modos de operación de BJT
A bipolar junction transistor has four modes of operation, depending upon the voltage polarities at the emitter-base junction and the collector-base ...
Respuesta de frecuencia de BJT
Respuesta de frecuencia de 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 ...
Frecuencia de corte de BJT
Frecuencia de corte de 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 de BJT
Cambio de BJT
Consider a switching circuit that involves a sudden change in the emitter-base voltage. Initially, both the base-emitter junction and the ...
Amplificadores BJT
Amplificadores 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 ...
Análisis de señales pequeñas de amplificadores BJT
Análisis de señales pequeñas de amplificadores BJT
Consider a BJT  transistor amplifier circuit operating in its active region to provide linear amplification. The total instantaneous base-emitter ...
Transistor de efecto de campo
Transistor de efecto de 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 ...
Características de JFET
Características de 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 ...
Sesgo de FET
Sesgo de 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 ...
Condensador MOS
Condensador 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 ...
Características del MOSFET
Características 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: Modo de mejora
MOSFET: Modo de mejora
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: Modo de agotamiento
MOSFET: Modo de agotamiento
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 ...
Amplificadores MOSFET
Amplificadores MOSFET
The MOSFET operates as a voltage-controlled current source in its active region, where the gate-to-source voltage regulates the drain current. This ...
Análisis de señales pequeñas de amplificadores MOSFET
Análisis de señales pequeñas de amplificadores MOSFET
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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