Toshiba TLP411E, Техническое учебное пособие

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9-2
No. Coil Terminal Turns Wire
Winding
method
1 NP1 5 - 4 24 UEW 0.3 FIT
2 NP2 3 - 2 4 UEW 0.2 SPACE
3 NP2 9 - 8 144 UEW 0.2 FIT
4 NP3 10 - 9 10 UEW 0.2 FIT
5 NP1 7 - 6 10 UEW 0.2 FIT
1. OPERATING DESCRIPTION
The base current at start-up passes through QM02, RM04
– RM06 and then flows into the base of QM03. QM02
works as the ON/OFF switch for start-up operation and turns
ON when the base voltage develops “L”.
When the base voltage develops “H” (12V), QM02 turns
off and QM03 oscillation stops. A current flows into QM01
and RM03 only when the start-up operation is carried out,
thus improves the start-up characteristics by increasing the
base current of QM03. Especially, this circuit takes effec-
tive under the low temperature status where the start-up
operation is likely to difficult.
DM03, DM05 and DM06 connected to QM03 base works
to prevent cause of an inverse break down overvoltage at
QM03 V
BE
. DM05 and DM06 are connected in series to
prevent the overheat at short-circuiting.
When the resistor value of RM02 is small, heat generation
of QM03 lowers. However, if the value is too small, the
current of DM03, DM05 and DM06 in continuity becomes
large.
DM04 increases only the base current of QM03 when it
turns on and reduces the V
CD
(sat) of QM03 to lower the
heat generation. RM07 works as the current limitation re-
sistor of DM04.
CM05 prevents a rapid increase of the collector current of
QM03 before the fluorescent lamp turns on.
Also, RM04 is a protective posistor to prevent QM03 from
generating temperature more than 120°C.
The specification of LM03 is shown in Figs 9-1, 9-2 and
table 9-1.
Fig. 9-1 Appearance and dimensions
6
7
5
4
8
9
10
NS1
Dot Mark : Polarity
NP1
3
2
(Primary side) (Secondary side)
NP2
NS2
NS3
Fig. 9-2 Winding specification
T D K
Lot no. 2 Month
1 Year
UNIT : mm
TOP VIEW
17.0 max
20.0 max
3.0 min
(5.0 mm typ)
22.5 max
9- 0.7
9- 1.2
2
5 6
10
2
3
4
5
10
9
8
7
6
3.81 0.1
12.7 0.3
All products must be impregnated by var nish.
Whight : (9)g