Snmek 1

Educational program: Mechanic - electrician

Title of program: Technical training II. classTransistors stage with common collectorWorked out: Bc. Chumchal Miroslav

Projekt Anglicky v odbornch pedmtech, CZ.1.07/1.3.09/04.0002je spolufinancovn Evropskm socilnm fondem a sttnm rozpotem esk republiky.

1Scheme of connection of the transistors stage with CC (SK)Recessing drawingAmplifier with common collectorComponents specificationProperties of the amplifier with CC (SK)Students activitiesControl questions

Connection of the transistor with common collector

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Connection scheme of transistors stage with CC

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Recessing drawing

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The amplifier with common collector

5Emitorov sledova5

Components Value T NPN ( BC 548 ) R1 10K R2 M1 R3 4K7 R4 470 C1, C3 1M/16V C2 20M/16VComponents specification

6 Qantity Value Input resistance ( RVST ) Very big ( 10K 50OK ) Output resistance ( RVST ) Very small ( 10ohm 1K ) Voltage amlification ( AU ) none Current amlification ( AI ) big ( 20 200 ) Efficiency amlification ( AP ) small ( 10 200 )Connection properties of the amplifier with CC

7Implement a connection with cc (sk) on a circuit board.Design a connection according to the scheme on a circuit board, independently.Before soldering of components take their measurement.After soldering, check out your practice work and take their measurement.

Students activities

8What voltage you can measure on the transistors electrodes ?How big electric current passing through by circuit ?Calculate amplification of amplifier AU and compare with connection with SE, SB.Calculate the gain in dB and compare with connection with SE, SB too.Make evaluation 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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