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Educational program: Mechanic - electrician Title of program: Technical training II. class Transistor stage with common emitter Worked out: Bc. Chumchal Miroslav Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002 je spolufinancován Evropským sociálním fondem a státním rozpočtem České republiky.
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Scheme of connection of stage with SE Equivalent connection Amplifier with common emitter Components specification Properties of amplifier with SE Students activities Control questions Connection of transistor with common emitter
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Scheme of connection of transistor stage with SE
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Equivalent connection of transistor stage with SE
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Amplifier with common emitter
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Components Value T NPN ( BC 548 ) R1 M1 R2 10K R3 470 R4 4K7 C1, C2 1M/16V C3 20M/16V Components specification
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Quantity Value Input resistance ( R VST ) small - medium ( 100 ohm – 10k ) Output resistance ( R VÝST ) big ( 1k – 100k ) Voltage amplification ( A U ) big ( 10 – 1000 ) Current amplification ( A i ) Very big ( 20 – 200 ) Efficiency amplification ( A P ) Very big ( 100 – 20 000 ) Properties of connection of amplifier with SE
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Design connection of amplifier with common emitter on the cuprexite board. Take measurement of components on own measure device and solder it together. Activate the amplifier. Evaluate your work. Practical part of assigned task
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What voltage we can measure on transistor electrode ? How big electric current passing through the circuit ? Calculate amplification of amplifier A U. Calculate gain of amplifier in dB. Evaluate your work. Students activities- control questions
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Poznáváme Elektroniku I.,Václav Malina, Vydalo nakladatelství KOPP,České Budějovice, 1996 www.google/panwiki.panska.cz/index/prakticky vypočet tranzistorového stupně www.google/panwiki.panska.cz/index/prakticky Vlastní poznámkový sešit Literature used
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