19V 4.74A Computer AC Adapter With Overheat Protection

19V 4.74A ?Computer AC Adapter With Overheat Protection?

19V4.74A Power Supplies, 19V Ac/Dc Adapter?

Specification:

1 DESCRIPTION:

The purpose of the document is to specify the functional requirements of a 90W switching power supply.

2 NPUT CHARACTERISTICS:

2.1 Input Voltage:

Rated Voltage: 100~240Vac

Variation Range: 90-264Vac

2.2 Input Frequency:

Rated Frequency: 50/60Hz

Variation Frequency: 47-63Hz

2.3 Input Current:

2.0Amps max at any input voltage and rated, DC output rated load.

2.4Inrush Current:

120 Amps Max Cold start at 240Vac input, with rated load and 25℃ ambient

2.5 Ac Leakage Current:

0.75mA Max.At240Vac input.

3 OUTPUT CHARACTERISTICS:

3.1 Power output

3.2 Combined Load/Line Regulation

3.3 Ripple and Noise:

Under nominal voltage and nominal load, the ripple and noise are as follows when measure with Max Band width of 20MHz and Parallel 47uF/0.1uF, crossed connected at testing point.

Voltage??????????????? Ripple and Noise (Max.)

+19Vdc???????????????? 190mV p-p

3.4 Turn on delay time:

3Second Max at 115Vac input and output Max load

3.5 Rise time:

40 mS Max at 115Vac input and output Max load.

3.6 Hold up time:

5 mS Min at 115Vac input and output Max Load

3.7 Efficiency:

80% Min, At 115/230Vac input voltage,1/4,1/2,3/4 and full load calculation average efficiency.

4 PROTECTION FUNCTION:

4.1 Short circuit test:

The power supply will be auto recovered when short circuit faults remove.

4.2 Over current Protection:

The power supply will be auto recovered when over current faults remove.

4.3 Over Voltage Protection:

The power supply will auto recovered when faults remove 120%~170%.

5 ENVIRONMENTAL REQUIREMET:

5.1 Operating Temperature:

0℃ to 40℃, full load, normal operation

5.2 Storage Temperature:-20℃ to 80℃??? With package

5.3 Relative Humidity:

5%(0℃)~90%(40℃)RH,72Hrs,Full load, Normal operating.

5.4 Vibration:

Operating: IEC 721-3-3 3M3

5~9Hz, A=1.5mm

(9~200Hz, Acceleration 5m/S2)

Transportation:

IEC 721-3-2 2M2

5-9Hz, A=3.5mm

9~200Hz, Acceleration=5m/S2

200~500Hz, Acceleration=15m/S2

Axes, 10 cycles per axis

No permanent damage may occur during testing.

The SAMPLE has to restore to its original situation after power off/on.

5.5 Dropping Packed:

1M for wall mount type and 760mm for desktop type as above described.

The horizontal surface consists of hardwood at least 13mm thick, mounted on two layers of ply