Snmek 1
Projekt Anglicky v odbornch pedmtech, CZ.1.07/1.3.09/04.0002je
spolufinancovn Evropskm socilnm fondem a sttnm rozpotem esk
republiky.Educational program: Mechanic - electrician
Title of program: Technical training II. class Transistor stage
with common baseWorked out: Bc. Chumchal Miroslav
1Scheme of connection of transistor stage with SBRecessing
drawingAmplifier with common baseComponents specificationProperties
of amplifier with SBStudents activitiesControl questions
Connection of transistor with common base
2Scheme of connection of transistors stage with SB
3Recessing drawing
4Amplifier with common base
5Neobrac fzi, mal proudov zeslen.5 Components Value T NPN ( BC
548 ) R1 470 R2 10K R3 M1 R4 4K7 C1, C3 1M/16V C2 20M/16VComponents
specification
6 Quantity Value Input resistance ( RVST ) Very small ( 10ohm
10Oohm ) Output resistance ( RVST ) Very big ( 100k 1M ) Voltage
amplification ( AU ) Very big ( 100 1000 ) Curent amplification (
AI ) none Efficiency amplification ( AP ) small ( 10 100
)Properties of connection of amplifier with SB
77Design connection according to scheme on circuit board .Before
soldering of components take their measurements.Join components
with solder and activate the amplifier.Take measurement of the
amplifier .
Students practical activities
8What value of voltage you can measure out on transistor
electrodes ?How big electric current passing through the circuit
?Calculate amplification of amplifier Au and compare with
connection with SE.Calculate gain in dB and compare with connection
with SE too.Make an evaluating of your work.Students activities-
control questions
9Poznvme Elektroniku I.,Vclav Malina, Vydalo nakladatelstv
KOPP,esk Budjovice,
1996www.google/panwiki.panska.cz/index/prakticky vypoet
tranzistorovho stupnVlastn poznmkov seitLiterature used
10