2. Tutorial: Mechanic - electrician Topic: Technical training II. class Transistors 1 Prepared by: Melichařík Lubomír Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002 je spolufinancován Evropským sociálním fondem a státním rozpočtem České republiky.

3.  TRANSISTOR  -is a semiconductor device, comprising of a pair of PN junctions.  -is the foundation of today’s integrated circuits such as memory, processors, etc.

4.  TRANSISTOR  -basic properties of the transistor is the ability to amplify small changes in voltage or current.  -transistor effect was discovered and the transistor invented on 16.12.1947

5.  TRANSISTOR  -semiconductor crossing transistor is a structure corresponding to the connection of two diodes in one device.  -every transistor has (at least) three electrodes

6.  BIPOLAR TRANSISTOR  -has (at least) three electrodes, which are designated as a collector, base and emitter  -according to the arrangement used of semiconductors type P or N we distinguish two type, NPN and PNP

7.  Electrotechnical schematic symbol for the NPN transistor A simplified model of an NPN transistor   Symbolic representation of two semiconductor crossing transistor NPN diodes.

8.  Electrotechnical schematic symbol for the PNP transistor  A simplified model of a PNP transistor   Symbolic representation of two semiconductor crossing transistor PNP diodes. 

9.  1. What is a transistor?  2. What are the basic properties of a transistor?  3. When was the transistor effect discovered?  4. How many electrodes does a transistor have?  5. Name the basic types of bipolar transistors

10.  1. Draw the schematic symbol for the NPN transistor and the simplified model.  2. Draw the symbolic representation of two semiconductor crossing transistor NPN diodes.  3. Draw the schematic symbol for the PNP transistor and the simplified model.  4. Draw the symbolic representation of two semiconductor crossing transistor PNP diodes.

11.  Václav MalinaPoznáváme elektroniku I.  Adrian Schommers Elektronika tajemství zbavená. ISBN 3-92608-32-5