EP-85 6 V, 330 mA Low Cost Charger
04-Oct-2005
7.3 Materials
Item
Description
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
Core : EE16, PC40EE13, TDK – ALG 230 nH/T2
Bobbin: Horizontal 10 pin – pins 3, 8, 9, and 10 removed
Magnet Wire: 0.20 mm Polyurethane coated class 2 wire
Magnet Wire: 0.14 mm Polyurethane coated class 2 wire
Magnet Wire: 0.25 mm Polyurethane coated class 2 wire
Triple Insulated Wire: 0.5 mm
Tape: 3M 1298 Polyester Film (white) 320 mils wide by 1 mil thick
Barrier Tape: 2 mm width
Varnish (dip)
7.4 Transformer Build Diagram
Iso. Tape
6
Secondary
0.5 mm T.I.W.
8T
Iso. Tape
2
* Shield
0.25 mm × 3
Iso. Tape
8T
2
Primary
0.14 mm
Iso. Tape
5
Bias
0.2 mm
Barrier tape 2 mm
* See Fig. 7 for detail of shield winding start technique.
Figure 6 – Transformer Build Diagram.
Power Integrations
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