RD5 データシートの表示（PDF） - Power Integrations, Inc

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RD5

TOPSwitch-II® Reference Design Board 85 to 265 VAC Input, 20W (30W Peak) Output

Power Integrations, Inc 

RD5

5, 6

7, 8

TAPE

4

3

1

2

SLEEVING

SECONDARY

BIAS

TAPE MARGINS

PRIMARY

WINDING INSTRUCTIONS

Primary Margins

Tape margins with 3 mm wide polyester tape. Match height with primary

and bias windings.

Primary Windings

Start at pin 2. Wind one layer (approximately 40 turns) of 30 AWG

heavy nyleze magnet wire from bottom (pin side) to top. Use one layer

of 12.2 mm wide polyester tape over first primary layer for basic

insulation. Continue winding remaining primary turns from top to bottom.

Finish on Pin 1. Sleeve start and finish with 24 AWG Teflon sleeving.

Basic Insulation

Use 1 layer of 12.2 mm wide tape for basic insulation.

Bias Winding

Start at Pin 4. Wind 8 bifilar turns 30 AWG heavy nyleze magnet wire

from bottom to top. Spread turns evenly across bobbin. Finish on Pin 3.

Sleeve start and finish leads with 24 AWG Teflon sleeving.

Reinforced Insulation Use 3 layers of 18.2 mm wide polyester tape for reinforced insulation.

Secondary Windings

Tape margins with 3 mm wide polyester tape. Match height with

secondary winding.

12V Secondary Winding

Start at Pins 7 and 8. Wind 8 bifilar turns of 24 AWG heavy nyleze

magnet wire from bottom to top. Spread turns evenly across bobbin.

Finish on Pins 5 and 6. Sleeve start and finish leads with 24 AWG

Teflon sleeving.

Outer Insulation

Apply 3 layers of 18.2 mm wide polyester tape for outer insulation.

Final Assembly

Assemble and secure core halves. Impregnate uniformly with varnish.

Figure 22. Construction details of transformer TRD5-1.

PI-2056-050798

42 A

7/97

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