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neon tube brightness adjustement

Dimmable Fluorescent Lights Bulbs

The brightness of a fluorescent light bulb or neon tube cannot adjust as easily as that of a incandescent bulb because it starts only when a voltage is much higher than that of the network, then remains on at electrical network voltage.

Normally, the high starting voltage is obtained by the interruption of current that circulates through a choke coil. This is usually a starter to ensure a sufficiently large current through the tube filaments.

These starter functions are taken over by this dimmable fluorescent light circuit presented which also allows adjustment of the fluorescent bulbs brightness.

Dimmable fluorescent bulbs circuit schematic

Dimmable Fluorescent Lights Bulbs Circuit Schematic

When we switch on the neon tube, the brightness control potentiometer, P1, should be placed on the position of maximum brightness, in order to facilitate the start.

2 Comments

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  • neerohgmail-com

    Quote -I want Electronic Starter circuit of 40 watt Tubelight. Can I use it? If no, please give me the suitable circuit. – Unquote

    I also want such a circuit please !!! Preferable the one used in philips type ballasts – if possible !!!

  • Kaushik Mondal

    I want Electronic Starter circuit of 40 watt Tubelight. Can I use it? If no, please give me the suitable circuit.

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