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Furthermore, high voltage is required for the major drawback of CCFLs. Because electrical emission is only based on electrical voltage,
And, CCFLs have no heating of the cathode to facilitate emission.
※ Then, the voltage amounts is 25 〜 50 V/ cm.
This means that CCFLs need a power supply of 800 〜 1000 V for notebook PC applications.
So that, so-called ‘inverters’ is needed, this circuit can convert the DC power from a battery into a sinusoidal AC voltage.
※ The voltage is transformed up to the optionally desired voltage.
