()

& = = = = . ? : V ()= I()*R()

: I()= V()/R()

.

15V 1.5A . .1) 15V 1.5A 2) 15V 3A . 1) 15V 1.5A .2)15V 3A () 15V 1.5A 15V 1.5A .

1.5A 1.5A 3A ? () 15V 0.7A .

1) .2) .3) .4) .

() 1) .4) .

( ) 15V 0.5A 0.5A .

()

.

:

(P) = (I)^2()* (R)

( DK128 )

:

R()= P()I( )/s( )

.

= = .

. (LED ) (Dk128 )

( DK128 )

. / () - - - ?- (/ = = ()- (ripple)- ( )

[ ]

()

1. 2. ( )

, : : ( )

/ ()- ()

) - > (DK128 )

Ex) 2SC18152 = S = C= (A :pnp, B :pnp , C :npn, D :npn 1815 = Transfer Resistor

(BJT)NPN = -> PNP = ->

: , ., ,

- - - -

TR MOSFAT .

MOS FATTR LED .

TR TEST.

TR LED

A N D

ABOUT000010100111 ABOUTO RABOUT000011101111 ABOUTN O TAOUT0110 AOUTNANDABOUT001011101110 ABOUTNORABOUT001010100110 ABOUTN O RABOUT000011101110 ABOUTAND : A*B[ A*1=A / A*A =A ]OR : A+B [ A+1=1 / A+A=A ]NOR : A+B NAND : AB = A+BXOR : A B = AB+AB+AND (MOS PET)5V A5V B X AND AND BA BA