8W Flouroscent lamp driver.

admin May 7, 2008 4 Comments


Here is the schematic of a simple flouroscent lamp driver circuit based on two transistors.The circuit uses capacitive ballasting for driving the tube.An 8 W  standard flouroscent tube can be efficiently driven using the circuit.

The two  transistors (2Sc 1983)  with associated components forms a oscillator  around 1KHz.The oscillator is wired so that  saturation condition of the transistors are  prohibited.This  adds on to the efficiency of the circuit.The circuit produces a clean sine wave with very less noise.

Circuit diagram with Parts list. 



  • Use a 12 V battery as the DC voltage source.
  • Use a 8W florescent lamp as load.
  • The winding details(no of turns) are given in the circuit.Use  0.8 mm dia enameled copper wire for primary and 0.4 mm dia enameled copper wire for secondary.The core can be a ferrite core.The primary should be wound first and secondary on top of it.
  • jane
    May 3, 2011

    i had this circuit 12V powering a 2x20W cfl and it works great!!! i can’t upload it right now due to my poor connection of internet 85kbps!!! ^_^

  • naeem
    February 23, 2011

    what is the rating of the transformer ?

  • sonu
    March 5, 2009

    can u explain how this circuit works?i mean the purpose of each component to make the dc fluorescent lamp work properly?

  • akik
    September 25, 2008

    can u explain how this circuit works???i maen the purpose of each component to make th dc fluorescent lamp work properly..thx

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