Tutorial: Mechanic - electrician

amountdollElectronics - Devices

Nov 2, 2013 (3 years and 9 months ago)

74 views

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.


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.


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




TRANSISTOR



-
semiconductor crossing transistor is
a structure corresponding to the
connection of two diodes in one
device.



-
every transistor has (at least) three
electrodes


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



Electrotechnical

schematic symbol for the NPN
transistor



A simplified model of an NPN transistor











Symbolic representation of

two

semiconductor

crossing

transistor

NPN
diodes
.



Electrotechnical

schematic symbol for the PNP
transistor




A simplified model of a PNP transistor









Symbolic representation of

two

semiconductor

crossing

transistor

PNP

diodes
.






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


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
.


Václav Malina


Poznáváme elektroniku I.


Adrian
Schommers


Elektronika tajemství
zbavená.





ISBN
3
-
92608
-
32
-
5