ELECTRONICS

P.MUNIREDDYGOVT.H.S, SANTHIPURAM

• BAND THEORY OF SOLIDS• INTRINSIC and EXTRINSIC

SEMICONDUCTORS• JUNCTION DIODE –PROPERTIES AND USES• TRANSISTORS –PROPERTIES AND USES• RADIO and T.V -BASIC PRINCIPLES OF

WORKING• COMPUTER- BASIC PRINCIPLES OF

WORKING

Topics in electronics

Band Theory of solids

Conduction band

Valence band

Valence band

Conduction band

Valence band

Conduction band

EG

EG

Insulator

ConductorSemiconductor

> 3 eV

1 eV

Formation of

holeConduction Band

Valence Band

Formation of hole Movement

Conduction Band

Valence Band

ELECTRIC CONDUCTION IN INTRINSIC SEMICONDUCTORS

Charge carriers in semiconductors

• P-type semiconductor

• N-type semi conductor

JUNCTION DIODE - PROPERTIES and USES

Types of semi conductors

P-type semi conductor

N- Type semi conductor

P-type semiconductors

Ge

Ge

Ge

Ge

Ge

Ge

Ge

Ge

GaGe

n-type semiconductors

Ge

Ge

Ge

Ge

Ge

Ge

Ge

Ge

PGe

Formation of p- n junction

• P-type and n- type semiconductors

• Recombination of electrons and holes during the formation of junction

Depletion region

• P-n junction diode with depletion region

Structure of junction diode

• P- n junction diode

Reverse bias condition

TRANSISTORS – PROPERTIES and USES

• Two types of junction transistors

RADIO and TELEVISION Basic principles of working

• Radio broad casting and reception

WORKING OF T. V

Computer - basic principles of working

• Black diagram of computer

C.P.U

• In side and side c.p.u.

acknowledgement

• 10th class text book• .www.users.bigpond.com• www.citycolligiate .com• www.tpub.com• www.bestanimation.com• www.fortunecity.com• www.k-12 solid state physics.com• WWW.K-12 physics.com