flourecent lamps

Hi Guest,

Can be the blast to be removed and apply smaller voltage instead ?

Only if the catastrophic self-disassembly of the <...flourescent lamps...> is the desired outcome.

Please ensure all other CR4 readers are standing several tens of metres away from this experiment before carrying it out.

I highly recommend using a flat blade screwdriver. It will help greatly when you have to tighten certain screws and cab become very useful in doing sheet metal assembly. While there might be a few times that you will desire a hammer, if you just calm down a little you'll most often find that a hammer is not needed. I've never seen a need for a chisel, file or saw. Oh, it is also helpful to read any offered assembly instructions.

use electronic ballast(saves power) rather than coil ballast in series to one side of fluroscent lamp

and starter(thermostat) in parallel to tube

coil generates high voltage due to the starter action(Faradays law) it make a discharge in tube(wow light)

the current flows in shortest path.short the starter to see your tube going off state.

capacitor connected in parallel to starter is to reduce EMI not EMP.

HIT

Hi friends...if the tube light is not glowing how to check the healthiness of choke online(without removing), if multimeter is not available? (with multimeter coil resistance can be checked).

If you have no test instrumentation available and the light does not go on then you cannot tell which component has failed.

Then how one can say that it's choke failure or tube light failure,like in households,where one find difficult to arrive at the conclusion without buying a new tubelight.I am confused in spite of being an electrical engineer! Pls help.I want to educate people about this too.

Well if you have two light fixtures (A & B) you can do some substitution checks to identify where a fault lies. But if you have no instrumentation and only one tube and lamp, you cannot tell why that lamp does not work. You cannot even safely tell if you have power coming in if you only have one lamp and no instruments.

Now there is a possibility you could troubleshoot with out instrumentation. You might be able to see, or smell some additional anomaly that tells you that the choke has failed. A bullet hole through the choke or the potting tar. The sight or smell of an old choke dripping potting tar out of a fixture will be a safe bet that the choke has failed. But if nothing appears wrong, then you will need some instrumentation to find the fault.

Thanks Fred..........