
Principles of Analog Electronics
324
However, considering that the already seen equation
3
Cm CM
can
also be written as
))
((
=°ω= ωsin90– cosVV tV t
Cm CM DCMD
(recall the expression of
, in Section 1.2.5 of Chapter 1) we have
cosVV VV
CM Cm CM CM d
∆= −=
Now substituting the cosinusoidal function with its Taylor series
=− +−
os 12/2!4/4!6/6!xx xx
, Section 1.6 in Chapter 1) truncated,
for simplicity, at second order, we have
VV
t
CM
11
1
2
1
2
()
∆≅ −−ω
from which we have
ω= ∆2/
V
M
which, replaced in the expression of the
maximum current through the diode, gives
2
II
V
DM RM
CM
=π
In conclusion, t