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If you live in a place where the supply voltage is
240 volts, you can strike the smaller tubes without
a ballast or transformer.
Kinjalp, i take it your supply is 120v, yes ?
Once lit the gas assumes a fairly low resistance,
so the current has to be limited, this is usually by
a capacitor in series with the unit normally to live.
When the starter changes state, the gas gets put into
circuit, the heaters become just electrodes.
I dont think this arrangement works on 120 volts.
But discharge tubes are a funny lot, there might be
some that do.
No, John, I have 220V in my country but I thought he wants a 4 feet tubelight to start without coils which is impossible unless you have a device which can generate high voltage similar to what a series RLC circuit does at resonant frequency.
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