ViewSonic Corporation
Confidential - Do Not Copy
VX912-4
22
6.3 Power(Inverter) Board
This is a specific power(inverter) power board for VE912 monitor 40W 12V 3.5A output power and backlight which
converters 12 Vdc to drive four cold cathode fluorescence tubes.
6.3.1 Inverter Electrical specification described as below.
Rated Input Voltage
12Vdc
Input Voltage Range
11.4 ~ 12.6 Vdc
Input Current
<2A
Input
On / Off control Voltage
2~3.3 for on , 0~1 for off
Rated Output Strike-on Voltage
1500Vrms
Rated Output Voltage
912Vrms at 7mA
Rate Output Frequency
40~50KHz
Output
Rated Ourput Current
7~8 mA
6.3.2 power
This is a general purpose AC / DC adapter which converter 90~240 Vac to a stabilized DC voltage 12 V with rated output
current of 4.16A . Electrical specification described as below.
Rated Input Voltage
90~240 Vac , 50 / 60Hz
Operation Input Voltage
90~260 Vac , 47 ~ 63Hz
Input Current
<1.5A
Inrush Current
<100A@120Vac
Standby Input Voltage
12Vdc
Output Voltage Regulation
+/-5%
Output Ripple & Noise
120mVp-p
Rate Output Current
<3.5A
Turn-on delay
<3secs
Summary of Contents for VX912-4
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