12V Flourescent Lamp Inverter


Posted on Feb 4, 2014

Fluorescent tubes use far less energy than incandescent lamps and fluorescent tubes last a great deal longer as well. Other advantages are diffuse, glare-free lighting and low heat output. For these reasons, fluorescent lighting is the natural choice in commercial and retail buildings, workshops and factories. For battery-powered lighting, fluores


12V Flourescent Lamp Inverter
Click here to download the full size of the above Circuit.

cent lights are also the first choice because of their high efficiency. The main drawback with running fluorescent lights from battery power is that an inverter is required to drive the tubes. Fig. 1: two switch-mode circuits are involved here: the DC-DC inverter involving IC1, Q1 & Q2 and the fluoro tube driver which converts high voltage DC to AC via IC3 and Q3 & Q4 in a totem-pole circuit. Inverter efficiency then becomes the major issue. There are many commercial 12V-operated fluorescent lamps available which use 15W and 20W tubes. However, it is rare to see one which drives them to full brilliance. For example, a typical commercial dual 20W fluorescent lamp operating from 12V draws 980mA or 11. 8W. Ignoring losses in the fluorescent tube driver itself, it means that each tube is only supplied with 5. 9W of power which is considerably less than their 20W rating. So while the lamps do use 20W tubes, the light output is well below par. This circuit generates in excess of 300V DC which could be lethal. Construction should only be attempted by those experimenced with mains-level voltages and safety procedures




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    12V battery charger with 555
    Musical chime generator
    Crossover For Subwoofer
    Diode Radio for Low Impedance Headphones
    Christmas Lights Sequencer Circuit using a 4017B
    How To Build A Burglar Alarm Using A Cmos 4060
    LM4910 minimum output noise reduce the output power circuit
    OPA606 capacitive load isolation buffer
    Buffer amplifier



    Top