2. Educational program: Mechanic – electrician Program title: Technical training II. class Two- stage amplifier Worked out: Bc. Chumchal Miroslav Project technical subjects in English, CZ.1.07/1.3.09/04.0002 Co- finance by Europian social fund and by state budget of The Czech Republic.

3.  Scheme of connection of two- stage amplifier  Description of two- stage amplifier  Design of printed circuit from the side of components and circuits  Components specification  Construction of two- stage amplifier  Students activities  Control questions Two- stage amplifier

4. Connection scheme of two- stage amplifier

5. - Ordering of voltage amplifiers in consecutive - Directly bounded two- stage amplifier - Stabilization of operating point of two- stage amplifier - Amplification of amplifier - Input voltage - Output voltage - Principles of construction of two- stage amplifier - Frequency attribute Description of amplifier and its construction

6. Design of printed circuit from the side of components and circuits

7. Components Value Note T1, T2 BC 548U CC =4,5-15V R1 10K R2 22K R3 5K6 R4 2K2 R5 470 C1 5M/15 C2,C3 10M/15 P1 150K P2 100K Components specification

8. Supply voltage is connected through filter member ( brum, oscillating ) Equipped by any kind of nf. transistors of BC type … Printed circuit firstly equipped by R, than another components and by electrolytic condensers in the end. Among condensers, resistances and printed circuit let a gap about 1 mm, influence of temperature on the printed circuit board. Do not shorten terminal of the transistors. Finally soldered resistance R2. Instruction for construction of amplifier

9.  Realize connection of two- stage amplifier on the printed circuit board.  Individually design connection by the pattern from the side of the components and from the side of the circuit.  Take their measurement before soldering of components.  After soldered make recovery and measurement of amplifier.  Take measurement amplitude frequency characteristic of amplifier. Entering to students- practical part

10.  Explain how is calculate amplification of amplifier ?  Calculate a gain of amplifier.  Compare volumes of two- stage amplifier with amplifiers SE, SB, SK and explain it. Control questions

11.  Poznáváme Elektroniku I.,Václav Malina, Vydalo nakladatelství KOPP,České Budějovice, 1996  www.google/Wikipedie - dvoustupňové zesilovače www.google/Wikipedie  Vlastní poznámkový sešit Literature used