Kubota D650-B Handbuch Seite 78

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Basic circuit
0076F023
(3) Charging mechanism
The charging mechanism is described in four sections:
1)
When key switch is ON
2)
At starting
3)
In charging
4)
Over-Charge protection
(1 ) GEN: Magnet type AC generator
(2) LAMP:
Charge indication lamp (not included in the
basic engine)
(3)
KEY SW: Key switch (not included in the basic engine)
(4)
BATT: Battery (not included in the basic engine)
(5) Blue:
GEN connecting terminal
(6) Red:
BATT
+
connecting terminal
(7)
Yellow: BATT voltage test terminal
(8) Black:
BATT - connecting terminal
(9) Green: LAMP connecting terminal
S" S2:
Output control/rectification thyristor (SC R)
0',02: Output rectifying diode
03,04: GEN generation detecting diode
Os, 06: Protection diode for wrong connecting of BATT
Z, :
BATT terminal voltage setting diode
01 : GEN generation detecting transistor
02: LAMP on/off transistor
03: Gate current control transistor
04: BATT voltage detecting transistor
Inner connecting of key switch contacts
:--Terminal
I
BA
r r -
AC ...
I . .
~osition
:
I
~ .=1
O--t=O
- - - - I I
. ­
1
~...: 0::1:·
0>--...-....0
~
[BI
Fig. 1 Fonction du circuit
1) When Key Switch is liON"
When the engine is at standstill with key switch set at posi­
tion 1. the circuit functions
to
light LAMP, as shown in Fig.
1_ With key switch at position 1. current flows to base of 02
through the route of BATT---+ emitter/base of 02---+ Rl---+
06-·~
BATT and collector of 02 is then turned on. As a
result, currunt also flows to LAMP though the route of
BATT---+ emitter/collector of 02-·-+ 05---+ LAMP---+ BATT
lighting LAMP to indicate that charging is not carried out.
At this time, though current flows to base of 03 through the
route of BATT--+ emitter/base of
03-·~
R2---+ 06---+ BATT.
collector of 03 has no current because GEN is sationary.
0076F024
82
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