Why does this lamp need a transformer?

[foggs]

I have a desk lamp that takes a CCFL bulb with a G23 connector, like this one:

https://www.eurolux.co.za/lampproductdetail.php?lmp_id=114#.WYC9I3PRbqA

The lamp has a transformer which has the same input and output voltage (230v - measured with a multimeter).

So my question is, what is the purpose of this transformer?

 

[BobK]

The "transformer" is probably a ballast, a large inductor used to limit the current to the bulb.

Bob

 

[Minder]

It is a starting choke for the lamp.
Also improves power factor.
https://www.quora.com/Why-the-power-factor-of-fluorescent-lamp-is-lagging
M.

 

[Minder]

The screw in type of CFL usually has an electronic ballast in the base.
All in one.
M.

 

[73's de Edd]

. Since you are operating at 230 volts AC instead of a lower, 120 volts AC, that is being enough voltage to run a CFL from.
In which case, your TRANSFORMER . . . in actuality . . . it very likely is using an olden tymes series lamp ballast.(Which you are perceiving as being a transformer)

It's function then will be to limit its possible current passage through itself, down to a low level,that would let the lamp operate normally.
Try working with too low of inductance for the ballast value, or none at all, you could find yourself with an initial strike over at initial ionization of the internal gas filling, at initial power application.
And THEN a progressively more aggressive arc over intensity, until either the tube cracks . . . .OR . . . . EXPLODES !
Thassssssit . .

Post edit . . . .
If you are out in the boonies . . . with Only a KINDLE. . . . up to 30 minutes can transpire in all of the correcting in FINGERING in a finally corrected reply. Then you find that two have replied already.
Chest la vie . . . .( I leave the last to show what is ALSO constantly happening , with spell check overbearing in overriding you.)

73's de Edd