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ไฟฟ้าเบื้องต้น PowerPoint PPT Presentation


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6584558


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""


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.


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.

2 ()


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1.5 Volt size D size C size A size AA size AAA


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(Charge)


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2 2 Volt 12 Volt 6


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1.2.1 (Solar Cell) 2 (Si) (Se)

0.25-0.6 Volt 50 A


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Solar Cell


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1.2.2


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1.2.3

( Piezo electricity)


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1.2.4


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1.2.5


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1.3 (Kind of Electricity)

2

1.3.1 (Statics Electricity)

1.3.2 (Current Electricity)

Electron Electron ""


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( Electric Circuit)

. ( Electromotive force) (Volt)

. (Resistance) (Ohm)

. ( Electric Current ) (ampere)


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2

1.3.2.1 (Direct Current) D.C.

1.3.2.2 (Alternating Current) A.C. (Cycle) (Frequency) (Cycle/Second) C.P.S


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Factor

George Simon Ohm ( Ohms law)

I = E/R

E = IR

R = E/I

E = EMF or Voltage Volt

R = Resistance Ohm

I = Current or Ampere Ampere


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E

E

E

I

R

I

R

I

R

Factors


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1 120 12

R = 12

E = 120V

I = 120/12

= 10A


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1.4.1 (Electric Power)

Watt (W)

P = EI

P =

E =

I =


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2 48 10

P = E x I

= 48 V x 10A

= 480 W


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- 1000 1 - ( Kilowatt Hour Meter)

(KWh) = (KW) x (h)

W = P x t

W=

P=

T=


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3 1000 2 ( 1000 1 )

( KWh)= ( KW) x (h)

W= P x t

= 1 x 2

= 2 -

4 1.5 KW 45 100 12

( 1.5 KW = 1500 45 = 0.75 )

W= P x t

= (1500 W x 0.75) + (100 W x 12 h)

= 2,325 Wh

= 2.325 -


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1.4.2 (Conductors)

( Conductors)

1.4.3 (Insulator)


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( Electrical Circuit) 1 1 1 Cycle

1. (Sources)

2 ( Wires)

3 (Load)

4 ( Control Device)


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1.5.1.1 (Sources)

1.5.1.2 ( Wires)

1.5.1.3 (Load)

1.5.1.4 ( Control Device) -


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(Closed Circuit)

()


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( Open Circuit)

( )


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1. (Parallel Circuit)

(2 ) ""


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2 (Series Curcuit)

(volts) (volts)


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(Parallel and Series)


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2


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(Short circuit)

()


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1 3

1.1 (Incandescent Tube)1.2 (Fluorescent Lamp)

1.3 (Mercury Lamp)

2 2.1 2.2 2.3 (Cut Out)2.4 (Fuses)2.5 (Switch)2.6 (Plug)2.7


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(Incandescent Tube) (Filament) (Tungsten) 10 40

()


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3,000 C


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1.

2. 1-1,500

3. 1-300 750 300-1,500 1,000

4.

5.

6.


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1.

2. (Dimmer)

3.

1.

2. ()


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(Fluorescent Lamp)

6-7 10 20 32 40 65

2

1. 1-2 1, 2, 4 8 10 1 , 40 4 2 (Electrode)

2. 4


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()


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. (Phosphor)


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. (Starter) (starter)


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. (Ballast)

()


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220 - ( (Preheat)

1-2 ()


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1. (Day Light) 6-7

2. 10 20 32 40 65

3. 8,000-12,000 .

4.

5.


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1.

2.

3.

4.

5. ( 2500-4000 )

6.

7.

1.

2.


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1.

2. -

3.

4. ()

5.

6.


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(Mercury Lamp)

40-3,000 - - - -


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(ARC)


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1.

2.

3. 6,000-24,000

4-7


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2.1

2.2 2.3 (Cut Out)

2.4 (Fuses)2.5 (Switch)

2.6 (Plug)2.7


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2.1

2.1.1

2.1.2

.

.

.

. P.V.C. (Poly Vinyl Chloride)

2.1.3


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Wire Gauge


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1-2 0 6

1. 10 .

2.

3.

4.

5.


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(Cut Out)


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(Fuses)


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1.

2.

3.


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(Switch)

2 () 2


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(Plug)

2

1. 2 1

2.2 ()


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