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

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