Bipolar Transistors 1 st Lesson The Transistor TASK

Bipolar Transistors

1 st Lesson The Transistor

TASK 1: Listening Comprehension 1. Research on semiconductors 2. Amplifiers 3. Invention of the transistor Moodle password: video

Ponovitev polprevodnik semiconductor dopiranje doping P-tip P-type N-tip N-type PN-spoj dioda PN-junction diode

Reading Comprehension (part 1)

NPN ? PNP ? NPN ? NPN PNP ? NPN ? PNP Memory tricks Ne Pridi Noter Pridi

Področja delovanja področje nasičenja ? Ic y(m. A) vključeno (ON)? Uporaba? stikalo 70 A 70 linearno aktivno ? področje IICC =(IB. I ) ? B 60 50 40 20 50 A E - zaporno E-? C - zaporno C-? 40 A področje zapore 30 A 20 A ojačevalnik Uporaba? 10 ? izključeno (OFF) 60 A E - prevodno E-? C - zaporno C-? 30 0 E - prevodno E-? C - prevodno C-? 10 A IB P = 0? 0 2 4 6 8 10 Izhodna karakteristika NPN tranzistorja 12 UCE x (V) ?

Operating regions Področja delovanja saturation področje nasičenja region Ic (m. A) vključeno switched (ON) ON stikalo switch 70 A 70 linearno active aktivno region področje IC = . IB 60 50 40 20 50 A E - reverse C - reverse 40 A področje cut-off zapore region 30 A 20 A amplifier ojačevalnik 10 izključeno switched (OFF) OFF 60 A EE- -prevodno forward CC -- zaporno reverse 30 0 E - forward C - forward 10 A IB = 0 0 2 4 6 8 10 12 Izhodnacharacteristic karakteristika tranzistorja Output of. NPN the NPN transistor V UCE (V)

Test your knowledge! English Slovene output characteristic operating regions active region saturation region cut-off region amplifier switch forward biased reverse biased izhodna karakteristika področja delovanja linearno aktivno področje nasičenja področje zapore ojačevalnik stikalo prevodno polariziran zaporno polariziran

Orientacije Configurations orientacija s skupno bazo (OSB) orientacija s skupnim emitorjem (OSE) orientacija s skupnim kolektorjem (OSC) Common Base (CB) Common Emitter (CE) Common Collector (CC)

Reading Comprehension (part 2)

TASK 2: True/False Moodle password: true

TASK 3: Vocabulary Moodle password: key

2 nd Lesson Load Line

Delovna premica - izpeljava Load line - derivation

Circuit Labelling RL VCC VRL VCE IC load resistance supply voltage drop across load resistor collector-emitter voltage collector current ground

Ohm’s law Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points. V = IR

Kirchhoff’s laws JUNCTION RULE The sum of the currents entering any junction must equal the sum of the currents leaving that junction. LOOP RULE The sum of the potential differences across all elements around any loop must be zero.

Task 1 (Hand-out) Terminology: Slovene - English Slovene English os koordinati (x, y) abscisa ordinata izpeljati enačbo izraz axis coordinates abscissa ordinate derive an equation expression

Terminology: Slovene - English Slovene premica delovna premica točka delovna točka enačba premice y = kx + n English straight line load line point operating point linear equation y = mx + c (British) y = mx + b (North American) smerni koeficient gradient / slope odsek na osi y y intercept izrazi Ic make Ic the subject of the formula

Ohm’s law triangle Make V the subject of the formula. V = I. R

Ohm’s law triangle Make I the subject of the formula. I = V/R

Ohm’s law triangle Make R the subject of the formula. R = V/I

Tasks 2 and 3 (hand-out)

Moodle Exercises Password: Lesson 2

Transistor as a Switch

Operating Regions

Basic NPN Transistor Switching Circuit