Toyota 7FBCU 15-55, Руководство пользователя

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2 . D i ffe r ence i n r esu lt of measu r emen t w it h c ir cu it t es t e r
The c ir cu it t es t e r powe r supp l y vo lt age depends on t he t es t e r t ype . 1 . 5 V , 3 . 0 V o r 6 . 0 V i s used .
The r es i s t ance of a sem i conduc t o r such as a d i ode va ri es w it h t he c ir cu it t es t e r powe r supp l y vo lt age .
The d i ode cha r ac t e ri s ti cs a r e shown i n t he f i gu r e be l ow .
The r es i s t ance va l ues of t he same sem i conduc t o r measu r ed
w it h t wo t ypes of c ir cu it t es t e r s hav i ng d i ffe r en t powe r supp l y
vo lt ages a r e d i ffe r en t .
Th i s manua l desc ri bes t he r esu lt s of measu r emen t w it h a
c ir cu it t es t e r whose powe r supp l y vo lt age i s 3 . 0 V .
3 . D i ffe r ence i n measu r emen t r esu lt by measu r emen t r ange (ana l og t ype)
In t he ana l og t ype c ir cu it t es t e r , chang i ng t he measu r emen t r ange sw it ches ove r t he i n t e r na l c ir cu it t o
va r y t he c ir cu it r es i s t ance . Even when t he same d i ode i s measu r ed , t he measu r emen t r esu lt va ri es
w it h t he measu r emen t r ange .
A l ways use t he r ange desc ri bed i n t he r epa ir manua l fo r
measu r emen t .
0
1
2
3
4
5
6
0 . 1 0 . 2 0 . 3 0 . 4 0 . 5 0 . 6 0 . 7 0 . 8
(V) F o r wa r d vo lt age
G e r man i um
d i ode
(mA)
Fo
r
w
a
r
d
cu
rr
en
t
S ili con
d i ode
Res i s t o r Me t e r
0
Ω
Va ri ab l e r es i s t o r
Res i s t o r
Res i s t o r
Range:
×
10
R ange:
×
1
Powe r sou r ce: 1 . 5V
R ed
B l ack
(SW1)
C
u
rr
en
t
f
l
ow