Kubota Z400-B Handbuch Seite 75

• Circuit configuration and functions
B
F
p
E
E
(J)
IG
B
IG
(3)
-I
@
'T
L L
:@
- ' ­
8
Tr2
The overall circuit configuration of the charging system is
shown in the figure. The internal circuit of the IC regulator
is composed of a hybrid IC incorporating a monolithic IC
(M.IC). The internal circuit of the monolithic IC is highly
• When the key switch is turned on and the engine
is at rest
complicated; there is no equivalent circuit to refer to in
explaining its functions. Therefore, the explanations that
follow pertain to various functions of the IC regulator
accomplished by the monolithic IC (M.IC) circuit.
(1) Stator Coi I
(5) Battery
(2) Rotor Coil
(6) Load
(3) Key Switch (7) IC Regulator
(4) Charge Lamp (8) Alternator
------~---- -------~
r -­ - - - --..... -­ --­ ----­ ---.... ---­ -
'8- ­ - - - -­
- J
(3)
. - - - - - . . -.....-.-. - - - - - - - - - - - - IG
B
01
F
r
,
,
....... ___ J
E
0109F309
IG
-I
@
I
LI
'T
L
:@
- -
_J
,
-'­
,Tr2
+
The "M-IC" circuit detects the battery voltage applied across
At this time, the alternator is not yet rotating, so no power is
terminal "I G" and activates "Tr1". When "Tr1" is turned
generated; the voltage across terminal "P" remains zero. The
on, an excitation current flows into the rotor coil (2). "M.lC" circuit detects zero volt at terminal "P" and sends
M.IC switches TR, off and on intermittently to limit the ON signal to "Tr2" which turns on the charge lamp (4).
amount of current flowing to the rotor coil to about O.2A.
M-65