Electronics I

The atomic structure of semiconductors. The pn junction. Biasing the diode. Diode characteristics. Rectifier circuits. Power supply filters and regulators. Troubleshooting of power supplies. Structure of Bipolar Junction Transistors (BJT). BJT bias circuits. The bipolar transistor as an amplifier and as a switch. Transistor packages. Common Emmiter (CE) Small signal amplifiers. Emmiter restistance bypass. Multistage amplifiers.

Objectives

1. Be able to polarize a semiconductor diode and illustrates the IV characteristic curve. 2. Analyse the operation, to plan and implement the three main rectifier circuits: imianorthoti, central contact rectifier, rectifier bridge. 3. To plan, implement and measure the performance of filters and power supplies with output voltage stabilization. 4. Be able to explain the three types of polarization of a bipolar transistor (BJT): base and emitter voltage divider. 5. To analyze the operation of the transistor as a low signal amplifier. 6. Be able to describe how a BJT used in circuit breaker. 7. Be able to design and analyze an electronic circuit using software packages (Multisim)

Prerequisites

Electrotechnics dc

Syllabus

THEORETICAL PART Chapter 1: Semiconductors 1.1 Energy bands 1.2 enriched semiconductors 1.3 semiconductors Chapter 2: Rectifier Diodes 2.1 The pn junction 2.2 Proper and reverse polarity contact pn. 2.3 The characteristic curve of the diode 2.4 Diode Models, threshold voltage and diode body resistance 2.5 The dc resistance of the diode 2.6 Effect of temperature 2.7 Manufacturers Identification: Maximum power and maximum reverse voltage Chapter 3: Special diodes 3.1 LED 3.2 zener diode 3.3 Stabilizer voltage zener diode. Chapter 4: Diode Applications 4.1 Circuit imianorthosis 4.2 rectifier circuits (rectifier central contact and bridge rectifier) 4.3 The filter capacitor 4.4 Voltage Stabilization 4.5Kyklomata Shearing Chapter 5: Bipolar Transistors (BJT) 5.1 Structure 5.2 Good-reverse polarization 5.3 The common emitter connection and the characteristic curves 5.4 Direct polarization base 5.5 Polarization a voltage divider 5.6 Other bias circuits 5.7 Locating faults Chapter 6: Common emitter Amplifier 6.1 DC and AC equivalent circuits 6.2 AC resistance 6.3 Analysis of common emitter amplifier (voltage gain) 6.4 Undermining the emitter resistance 6.5 multistage amplifiers LABORATORY PART Problem 1: The curve of the passageway Exercise 2: Circuits rectifiers (imianorthotis and bridge rectifier) Exercise 3: The filter capacitor Exercise 4: The zener diode Exercise 5: The zener voltage stabilizer Exercise 6: Wiring common emitter (CE) Exercise 7: Operating Areas of the contact transistor Exercise 8: How to bring the transistor to a fixed point Q Exercise 9: Polarization of pnp transistor Exercise 10: coupling capacitors (coupling) and bypass (bypass) Exercise 11: The amplifier CE