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Chapter 12

Transistors

Биполярный переходный транзистор
Биполярный переходный транзистор
Transistors play a vital role in electronic circuits, enabling the functionality of amplifiers, memories, and microprocessors. Transistors can be designed ...
Конфигурации BJT
Конфигурации BJT
Bipolar junction transistors have different configurations based on the common contact. The common base configuration features a shared base terminal for ...
Принцип работы BJT
Принцип работы BJT
Consider a PNP transistor in a common-base configuration, operating in active mode. Forward biasing reduces the emitter-base potential, enabling the ...
Характеристики BJT
Характеристики BJT
Consider the common-emitter configuration of the BJT. The voltage and current dependencies are measured experimentally to understand the current-voltage ...
Режимы работы BJT
Режимы работы BJT
A bipolar junction transistor has four modes of operation, depending upon the voltage polarities at the emitter-base junction and the collector-base ...
Частотная характеристика БЖТ
Частотная характеристика БЖТ
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 ...
Частота среза BJT
Частота среза 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 ...
Коммутация BJT
Коммутация BJT
Consider a switching circuit that involves a sudden change in the emitter-base voltage. Initially, both the base-emitter junction and the ...
Усилители BJT
Усилители 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 ...
Анализ малых сигналов усилителей BJT
Анализ малых сигналов усилителей BJT
Consider a BJT  transistor amplifier circuit operating in its active region to provide linear amplification. The total instantaneous base-emitter ...
Полевой транзистор
Полевой транзистор
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 ...
Характеристики JFET
Характеристики 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 ...
Смещение полевых транзисторов
Смещение полевых транзисторов
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 конденсатор
MOS конденсатор
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 ...
МОП-транзисторы
МОП-транзисторы
The Metal-Oxide-Semiconductor Field-Effect Transistor, or MOSFET is a semiconductor device with three terminals: the Source, the Drain, and the Gate and ...
Характеристики МОП-транзисторов
Характеристики МОП-транзисторов
The essential parameters of MOSFETs include the channel length, the channel width, the oxide thickness, the junction depth, and the substrate doping. With ...
MOSFET: Режим улучшения
MOSFET: Режим улучшения
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 ...
МОП-транзисторы: режим истощения
МОП-транзисторы: режим истощения
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 ...
Усилители на МОП-транзисторах
Усилители на МОП-транзисторах
The MOSFET operates as a voltage-controlled current source in its active region, where the gate-to-source voltage regulates the drain current. This ...
Анализ малых сигналов усилителей на МОП-транзисторах
Анализ малых сигналов усилителей на МОП-транзисторах
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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