AN2521

Transformer specification

31/33

Note:

All terminal wires must be insulated by tube

Figure 34.

Winding position on coil former

Note:

Primaries A & B are in parallel

8.4

Mechanical aspect and pin numbering

●

Maximum height from PCB: 30 mm

●

Coil former type: horizontal, 9+9 pins (pin 2 removed)

●

pin distance: 4 mm

●

Row distance: 35 mm

●

External copper shield: not insulated, wound around the ferrite core and including the

coil former. Height is 12 mm.

Table 10.

Winding characteristics

Pin

Winding

O/P RMS

current

Number of

turns

Number of

layers

Wire type

5 - 6

Aux

7 spaced

1

G2 –

φ 0.23 mm

3 - 1

Primary - A

60

2

G2 – 2 x

φ 0.23 mm

8 - 10

19 V

81

Multistrand

G2 - 4 x

φ 0.64 mm

4 - 2

Primary - B

60

2

G2- 2 x

φ 0.23 mm

Polyester tape - 2 layers

Polyester tape - 2 layers

Polyester tape - 2 layers

Polyester tape - 1 layers

coil former

6.2

6.2

PRIMARY - B

19V

PRIMARY - A

AUX

Barrier tape