EP-91 12 V, 1 A, Universal Input Supply
7-Feb-2006
7.3 Materials
Item
Description
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
Core: PC40EE25-Z, TDK or equivalent Gapped for AL of 335 nH/T2
Bobbin: EE25, Vertical, 10 pin – Yih-Hwa part # YW-360-02B
Magnet Wire: #30 AWG
Magnet Wire: #26 AWG
Triple Insulated Wire: #26 AWG.
Tape: 3M # 44 Polyester web. 2.0 mm wide
Tape: 3M 1298 Polyester Film, 2.0 mils thick, 8.6 mm wide
Tape: 3M 1298 Polyester Film, 2.0 mils thick, 10.7 mm wide
Tape: 3M 1298 Polyester Film, 2.0 mils thick, 4.0 mm wide
Varnish (applied by dipping only, not vacuum impregnation)
7.4 Transformer Build Diagram
6
8
2 mm
1 layer of tape
5
2 mm
2
4
Bias Winding
Margin
Tape
Primary Winding
1
3
1
1 layer of tape
Cancellation Winding
No Connect
Figure 5 – Transformer Build Diagram.
Power Integrations
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