Toshiba TLP510E manual Operating Description, Winding specification, Coil Terminal Turns, Method

9.FLUORESCENT LAMP INVERTER CIRCUIT (For TLP511)

CI004 prevents a rapid increase of the collector current of QI003 before the fluorescent lamp turns on.

Also, RI009 is a protective posistor to prevent QI003 from generating temperature more than 100°C.

9-1. Operating Description

The base current at start-up passes through QI002,

The specification of LI002 is shown in Figs. 9-1-1, 9-1-2 and Table 9-1-1.

RI003, RI004, RI009 and then flows into the base of QI003. QI002 works as a ON/OFF switch for start-up operation and turns ON when the base voltage develops “L”. When the base voltage develops “H” (12V), QI002 turns off. A current flows into QI001 and RI002 only when the start-up operation is carried out, thus improves the start-up characteristics by increasing the base current of QI003. Especially, this circuit takes effective under the low temperature status where the start-up operation is likely to difficult.

Dot Mark : Polarity

5

NP1

4

3

NP2

2

6

NS1

7

8

NS2

9

NS3

10

(Primary side) (Secondary side)

DI003, DI004 and DI005 connected to QI003 base

prevents an inverse break down overvoltage at QI003

Fig. 9-1-1

Winding specification

VBE. DI003 and DI004 are connected in series to prevent

Table 9-1-1

the overheat at short-circuiting.

When the resistor value of RI006 is small, heat genera-

No.

Coil

Terminal

Turns

Wire

Winding

tion of QI003 lowers. However, if the value is too small,

method

the current of DI003, DI004 and DI005 in continuity

1

NP1

5 – 4

24

UEW 0.3

FIT

becomes large.

2

NP2

3 – 2

4

UEW 0.2

SPACE

DI002 increases only the base current of QI003 when it

3

NP2

9 – 8

144

UEW 0.2

FIT

4

NP3

10 – 9

10

UEW 0.2

FIT

turns on and reduces the VCE (sat) of QI003 to lower the

5

NP1

7 – 6

10

UEW 0.2

FIT

heat generation. RI005 works as a current limitation

resistor of DI002.

Weight : (9)g

UNIT : mm

Lot No. 2

Month

17.0 max.

1

Year

5

6

max.

4

7

3

8

22.5

2

9

D K		10
T
	3.0 min.	9-φ0.7
20.0 max.	(5.0 mm typ.)

All products must be impregnated by varnish.

3.81 0.1

	2	10
	5	6
9-φ1.2	12.7	0.3

TOP VIEW

Fig. 9-1-2 Appearance and dimensions

9-1