'Pnp transistor' diaporamas de présentation

Chap. 4 BJT transistors

Chap. 4 BJT transistors. Widely used in amplifier circuits Formed by junction of 3 materials npn or pnp structure. pnp transistor. Operation of npn transistor. Large current. Modes of operation of a BJT transistor. Mode BE junction BC junction cutoff reverse biased reverse biased

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Chap. 4 BJT transistors

Chap. 4 BJT transistors. Widely used in amplifier circuits Formed by junction of 3 materials npn or pnp structure. pnp transistor. Operation of npn transistor. Large current. Modes of operation of a BJT transistor. Mode BE junction BC junction cutoff reverse biased reverse biased

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Chapter 5 Bipolar Junction Transistors

Chapter 5 Bipolar Junction Transistors. Chapter Goals. Explore the physical structure of bipolar transistor Study terminal characteristics of BJT. Explore differences between npn and pnp transistors. Develop the Transport Model for bipolar devices.

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Engineering Kamiakin HS

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SEMICONDUCTORS

SEMICONDUCTORS. Testing Bipolar Transistors. SEMICONDUCTORS. Bipolar transistors are solid state devices that are capable of operating for extremely long periods of time without failure.

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Module 2: Part 1

Module 2: Part 1. The Bipolar Junction Transistor. Learning Objectives. After studying this module, the reader should have the ability to: Understand and describe the general current-voltage characteristics for both the npn and pnp bipolar transistors.

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IGBT: Insulated-Gate Bipolar Transistor

IGBT: Insulated-Gate Bipolar Transistor. Combination BJT and MOSFET High Input Impedance (MOSFET) Low On-state Conduction Losses (BJT) High Voltage and Current Ratings Symbol. Cross-Sectional View of an IGBT. Metal. Silicon Dioxide. Metal. IGBT Equivalent Circuit for V GE <V T. + V CC.

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Transistors

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PNP transistor (structure, operation, models)

PNP transistor (structure, operation, models). Reading: Chapter 4.6. PNP Transistor. The operating principle of a PNP BJT is the same as that of an NPN BJT. Note that the bias-voltage polarities are reversed for the PNP device, compared to an NPN device.

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Class B Output

Class B Output. Biasing the Class B Output. * No DC current is used to bias this configuration. *Activated when the input voltage is greater than the Vbe for the transistors. * npn Transistor operates when positive, pnp when negative. * At a zero input voltage, we get no output voltage.

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Chapter 12-2. Transient (switching) response

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AUTOMATIC EMERGENCY LED LIGHT

AUTOMATIC EMERGENCY LED LIGHT. SUBMITTED BY. ABSTRACT. This automatic emergency led light used in night at emergency time when the power cut or off by some region. This emergency light takes 230V AC and it converts it in 12V DC and charge the battery which is used in this circuit.

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TRANSISTORS

TRANSISTORS. TYPES OF TRANSISTORS. PNP TRANSISTORS NPN TRANSISTORS FIELD EFFECT TRANSISTOR ( F.E.T ) UNI JUNCTION TRANSISTOR ( U.J.T ) SILICON CONTROLLED RACTIFIER ( S.C.R ). CONSTRUCTION. TRANISTOR IS A CONNECTION OF TWO DIODES.

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PNP Transistors

PNP Transistors. Structures of BJT Transistors. (NPN transistor). (PNP transistor). Voltage and Current Polarities of NPN and PNP transistors. Large-Signal Model of BJT Transistors. (NPN). (PNP). Equations. Small Signal Model of BJT Transistors. (NPN). (PNP).

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The Zener Diode

The Zener Diode. +I F. The zener diode exhibits a constant voltage drop when sufficiently reversed-biased. This property allows the use of the zener diode as a simple voltage regulator. zener point. -6. -3. +V F. 1. 2. 3. +V. Constant breakdown voltage. R.

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Bipolar Junction Transistors (BJTs)

Bipolar Junction Transistors (BJTs). The bipolar junction transistor (BJT) is constructed with three doped semiconductor regions called emitter , base , and collector . These three regions are separated by two pn junctions: The base-emitter junction and the base-collector junction .

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Resistant series circuits

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