<s>
Tip-magnetic	B-Device
driving	I-Device
(	O
TMD	O
)	O
is	O
a	O
fan	B-Application
technology	O
invented	O
by	O
Yen	O
Sun	O
Technology	O
Corporation	O
(	O
also	O
known	O
as	O
Y.S.	O
</s>
<s>
TMD	O
moves	O
the	O
motor	O
out	O
of	O
the	O
hub	O
of	O
the	O
fan	B-Application
and	O
puts	O
it	O
around	O
the	O
edge	O
.	O
</s>
<s>
The	O
design	O
of	O
a	O
TMD	O
fan	B-Application
reduces	O
approximately	O
75%	O
of	O
the	O
motor	O
hub	O
area	O
of	O
a	O
traditional	O
fan	B-Application
.	O
</s>
