<s>
Burst	B-Device
dimming	I-Device
is	O
a	O
method	O
to	O
control	O
dimming	O
of	O
cold	O
cathode	O
fluorescent	O
lamps	O
(	O
CCFLs	O
)	O
and	O
LEDs	O
by	O
using	O
pulse	B-Algorithm
width	I-Algorithm
modulation	I-Algorithm
(	O
PWM	O
)	O
at	O
approximately	O
100-300	O
Hz	O
which	O
is	O
supposed	O
to	O
be	O
above	O
the	O
noticeable	O
flicker	B-General_Concept
limit	O
for	O
the	O
human	O
eye	O
.	O
</s>
<s>
This	O
technique	O
is	O
sometimes	O
used	O
with	O
TFT	B-Device
displays	I-Device
to	O
control	O
backlighting	O
.	O
</s>
