Inverter for 8W Fluorescent Lamp

8W Fluorescent Lamp Inverter

The 2.2W resistor and 0.22mF capacitor included in the circuit give the inverter a rapid turn-off characteristic, which limits the power dissipation in the transistor to approximately 500mW with the tube lit and with a 12Vsupply.However the power dissipation in the transistor is much higher if the tube is broken or removed. Taking the worst case conditions of 16.5V supply and no tube, the transistor will dissipate approximately 1.5W. Thus if the inverter may be operated under these conditions as for instance Public Transport applications etc.

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