Inverter for fluorescent lamp

ccfl electronic inverter

The CCFL (Cold Cathode Fluorescent Lamp) inverter works in general the same as other converter systems in a much smaler scale.



schema components:

Q1 , Q2 = NPN TIP31, to-220

R1 , R2 = 8.2 KOhms

D1 , D2 = 1N4001 / 4148

C1 = 10uF , 25V ,

C2 = 22 pF , 2KV

L1 = 80uH

T1 = FE16C or equivalent transformer




CCFL inverter transistors equivalent

D1616╦2SD592A╦KT3117A
║╠BC337
║╠2SD1616╦BC637
║║╠BC639
║║╚2SD667
║╚2SD592ANC╦2N3859A
║╠BC637
║╠KT3117A
║╠2SD667
║╚BC639
╚2SC3328╦2N6516
╠MPS651
╠KT504A╦D1490
║╠2SD1490
║╠2SD1616
║╠2SC4489
║╠2SD2182
║╚2SD218
║
╚2SC3328-O╦2N6516
╠KT504A
╚MPS651

Inverter Transformer

T1 = FE16C or equivalent transformer

TURN RATIO:input =1.8output =8..
PRIMARY INDUCTANCE:P1=33.5P2=44.5P3=3.7uH
PRIMARY DIAMETER:P1=mmP2=mmP3=mm
SECONDARY INDUCTANCE:S1=150mH....
SECONDARY DIAMETER:S1=mm....
PRIMARY DCR:P1=0.3OhmP2=0.3OhmP3=0.1 Ohm
SECONDARY DCR:S1=120 Ohm....
CURRENT RATING:Primary230mASecondary30mA..

P3=Winding for optional feedback control




Measure wire thickness

How to measure thin isolated copper wire thickness for a self made transformer coil component


Wire diameter: 0.05 ~ 0.20mm

DIAMETER WIRE COLOUR
0.01.
0.02.
0.03.
0.04.
0.05.
0.06.
0.07.
0.08.
0.1.

3rd world CCFL lamp (2007 model)

  • Wikipedia:CCFL inverter
  • Wikipedia:Cold cathode
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