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NEC 104PW191 LCD CCFL Power Inverter Original New Condition For Electronic

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NEC 104PW191 LCD CCFL Power Inverter Original New Condition For Electronic

Brand Name : NEC
Model Number : 104PW191
Certification : ISO9001
Place of Origin : Japan
MOQ : 1
Payment Terms : T/T, Western Union,Escrow 10(we pay hkinventory escrow fee) ,Paypal
Delivery Time : 1-3 Working Days
Packaging Details : Antistatic bag, Bubble Bag, Foam Box and Carton Box
Adaptable product : NL10276BC20-04
Input voltage for power supply : 12.0 V (typ.)
Output voltage : 600 Vrms (typ.)
Oscillation frequency : 65 kHz (typ.)
Weight : 20g
D/C : 15+
Quality : New and Original
Application : Electronic component
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1. OUTLINE


1.1 STRUCTURE AND PRINCIPLE


104PW191 inverter for LCD (Liquid crystal display) modules is composed of a DC/AC inversion circuit, a luminance control circuit and a boosting transformer.

The DC/AC inversion circuit inverts a direct current (DC) power supply into an altar current (AC) by the center-tap transmitter circuit that used transistors.

The luminance control circuit can control the luminance of cold cathode lamps for LCD backlight unit.

The boosting transformer is translated the low AC voltage that obtained from a DC/AC inversion circuit to the high AC voltage. Also the high AC voltage is outputted from a secondary side of the boosting transformer.


1.2 APPLICATIONS


· High AC voltage generator of cold cathode fluorescent lamp for LCD


1.3 FEATURES


· Pulse width modulation circuit

.

2. DETAILED SPECIFICATIONS


2.1 MECHANICAL SPECIFICATIONS


ParameterSpecificationUnit
Board size105.0 ± 0.5 (W) ´ 26.5 ± 0.5 (H) ´ 10.0 ± 0.5 (D) Note1mm
Weight20.0 (typ.), 23.0 (max.)g

2.2 ABSOLUTE MAXIMUM RATINGS


ParameterSymbolRatingUnitRemarks

Combined load

ResistanceRL90kW

Ta = 25°C

Stray capacityCL5pF

Input voltage

Power supply for inverterVDDB0 to +15.0V
BRTI signalVBI-0.3 to +15.0V
BRTC signalVBC-0.3 to +15.0V
Storage temperatureTst-30 to +85°C

-


Operating temperature

Front surfaceTopF-10 to +70°C
Rear surfaceTopR-10 to +70°C

Relative humidity Note1


RH

£ 95%Ta £ 40°C
£ 85%40 < Ta £ 50°C
£ 70%50 < Ta £ 55°C
£ 60%55 < Ta £ 60°C
£ 50%60 < Ta £ 65°C
£ 42%65 < Ta £ 70°C
Absolute humidity Note1-

£ 78

Note2

g/m3Ta > 70°C

Note1: No condensation

Note2: Ta = 70°C, RH = 42%


2.3 ELECTRICAL CHARACTERISTICS


ParameterSymbolMin.Typ.Max.UnitRemarks

Combined load

ResistanceRL-8590kW

-

Stray capacityCL-5-pF

Input voltage

Power supply for inverterVDDB10.812.013.2V
BRTI signalVBI0-2.5V

BRTC signal

LowVBCL0-0.8Vat inverter power OFF
HighVBCH2.0-VDDBVat inverter power ON
Input currentPower supply for inverterIDDB-530750mA

at maximum luminance,

VDDB = 12.0V Note1

Output voltagePower supply for LCD lampVS1,1501,2501,500Vrms

Starting voltage for lamp,

RL = ¥, CL = ¥

Output currentLCD lampIBL4.55.05.5mArms

-

Oscillation frequencyFO606570kHz
Luminance control frequency for LCD lampFL240270300Hz

Note1: The power supply lines (VDDB and GNDB) occurs large ripple voltage while luminance control of LCD lamps.

There is the possibility that the ripple voltage produces acoustic noise and signal wave noise in audio circuit and so on.

Put a capacitor (5,000 to 6,000mF) between the power source lines (VDDB and GNDB) to reduce the noise,

if the noise occurred in the circuit.



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NEC 104PW191 LCD CCFL Power Inverter Original New Condition For Electronic Images

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