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5. POWER SUPPLY & INVERTER BOARD

5.1 Description

The Power supply and Inverter board is designed for Display control board and lighting up

the back-lights of LCD module.

5.2 Power supply ( AC to DC section)

5.2.1

input Voltage Range

The monitor shall operate within specification over the range of 90 to 265 VAC power supply.

5.2.2

Input Frequency Range

Input power frequency range shall be from 47.5 to 63 Hz over the specified input

voltage range.

5.2.3

Quick specification review

•

Input current

•

Inrush current @ cold start

•

Output

Output Volt

•

Total output power:

•

Withstanding voltage :

•

Leakage current :

•

Efficiency :

1.2A (max) at 90VAC input and full load ,

0.6A (max) at 264 VAC input and full load.

30A(0-peak)@ 110Vac ,50A(0-peak) @ 220Vac

(measured when switched off for at least 10 mins.)

Tolerance

+5Vdc

±5%

+5Vdc

±5%

+12Vdc

±5%

Output Current

MIN

0.05A

48 Watt max.

1.5Kvac or 2.2KVdc for 1 minute.

< 0.25mA/100Vac , <3.5mA/230Vac

80% min. @115V/230VAC, maximum load.

Volt Tolerance

MAX

1.0A

4.8~5.2V dc

1.5A

4.8~5.2V dc

2.2A

11.4~12.6Vdc