DER-42

Portable CD Player – LNK520P

November 18, 2004

OD

0.15 mm

Maximum Primary Wire Diameter including

insulation to give specified number of layers.

DIA

0.12 mm

Bare conductor diameter

AWG

37 AWG

Primary Wire Gauge (Rounded to next smaller

standard AWG value)

CMA

257 Cmils/Amp

Primary Winding Current Capacity (200 < CMA <

500)

AWG_BIAS

35 AWG

TRANSFORMER SECONDARY DESIGN PARAMETERS

ISP

3.77 Amps

Peak Secondary Current

ISRMS

1.33 Amps

Secondary RMS Current

IRIPPLE

1.17 Amps

Output Capacitor RMS Ripple Current

AWGS

29 AWG

Secondary Wire Gauge (Rounded up to next larger

standard AWG value)

DIAS

0.29 mm

Secondary Minimum Bare Conductor Diameter

ODS

1.11 mm

Secondary Maximum Insulated Wire Outside

Diameter

INSS

0.41 mm

Maximum Secondary Insulation Wall Thickness

VSEC

0.013 Volts

Voltage Drop across secondary winding

9 Performance Data

All measurements are performed at room temperature, 60 Hz input frequency, unless

otherwise specified. The output voltage is measured at the end of a 6-foot # 22 AWG

cable with 0.2 Ω total resistance.

9.1 Efficiency

40.00

50.00

60.00

70.00

80.00

0

100

200

300

400

500

600

700

Output Current (A)

Vin = 90 Vac

Vin = 120 Vac

Vin = 220 Vac

Vin = 265 Vac

Figure 6 – Efficiency versus Output Current

Page 12 of 19

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