pegasus said:
But please do note that it's not recommended to keep CCFLs ON for long.
surajspai said:
Why not?
I may not know much on this but i will try to explain.
I hope some gurus can correct me where i falter and help us understand better.
Cold cathode - Wikipedia, the free encyclopedia
A CCFL needs some sort of complex high-voltage power source with some mechanism for current-limiting due to the nature of its operation.
The power source consists of an invertor as our PSU supplies DC power and the CCFL needs AC power.
As the time of operation increases, the inverter/power source and the tubes heat up, the current through the circuit increases and needs to be limited and the voltage needs to be dropped gradually too.
Over a longer period of time, the power source or the tube electrodes may fail due to the high current in case the mechanism fails or due to overheating.
This is further complicated by the fact that most CCFL inverters may not be of that good quality.
Exterme case scenario-
There have been cases where CCFL inverters go out with a bang- especially in high ambient temperatures as in most cities in India.
The resultant damage/shorting in the CCFL invertor may make the PSU go out with a bang (Thank God for OVP OCP, etc and pray they work).
PSU bang = possibility of anything and everything connected to it goes out with a bang.
Then it's our head, the wall and bang.