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E-mail: katsiki@auth.gr

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()

-

( )

..

L

m L:

m:

:

(, , ....)

Lm, T L/m, T L?????

xaay 10

22

2

0

ii

iiiii

xxN

yxxxya

221

ii

iiii

xxN

yxyxNa

2

i

2

i

2

i

2

i

iiii

yyNxxN

yxyxNR

( )

-1 1

R

!

L(m) T (sec)

0.130 0.800

0.345 1.28

0.830 1.86

1.65 2.55

4.25 4.00

8.90 5.50

L T;

(i) =L+ (ii) =/L + (iii) = + L (, =)

R

R = 0.9698

0

1

2

3

4

5

6

7

0 2 4 6 8 10L

T

R = -0.7236

0

1

2

3

4

5

6

0 2 4 6 8 101/L

T

T = 1.79 L1/2

+ 0.2173

R = 0.9995

0

1

2

3

4

5

6

0 1 2 3 4T

L1/2

xaay 10

22

2

0

ii

iiiii

xxN

yxxxya

221

ii

iiii

xxN

yxyxNa

:

2

i

2

i

2

y

axxN

N

1

2N

axay2

0i1i2

y

a0 a1

2

i

2

i

2

i

2

y

axxN

x

0

0 10 a 1 a

y a a x

:

:

:

n n

m m i i

i 1 i 1

1 1x , y x , y

n n

0

10

20

30

40

50

0 2 4 6 8 10 12 14 16 18 20 22

X

y

a0 a1

()

.

68%

a1a1

aaa0.

( . Newton,

=F/m)

x-y

R=0.886

R=0.999

( -)

I-V

= /V= 1/R

-

RtIQ 2

Joule

R0 : 0

00 TT1RTR

:

(Cu=0.0039K

-1) R~

-

:

V

A

+ - E Ohm

I

VR

(

)

- & R

= R .

PTC

TC

Negative

Temperature

Coefficient

() T

B

eAR

0 R0 0T

B

0 eAR

0

0

T

1

T

1B

0

T

B

T

B

0

eRR

eA

eA

R

R

NTC

= +

.TTdt

dTCIV

( J / K )

EWTON

( W / K )

C

5. (V) COM V//.

( , ).

5 V. ; ;

. .

(oC)

( 3 ).

. 59-71 ()

COM V//.

.

. ; , NTC PTC;

. 1, 3 5 min. .

;

. ;

. ;

.

-V

o ( Power OFF, 0 Volts) () 1 mA RAN: 2 2 V RAN: 2

-V

20 (V) () (0.5 10 Volt 0.50 Volt).

!!!

,

.

10 Volt,

( V ).

( ).

R (=V/I) V.

. (),

RV

IV; RV

IV;

IV ( ) .

(0, 0);

() R-V ()

IV.

.

-V .

R

( ). .

, ,

;

V . ; ,

;

() V;

()

() ()

;

;