3_active_passive_linear_resistor

Quesons

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Unformatted text preview: +
 t v(t)
 i(t)
 t U(t ) = ∫ p(t ') dt ' = ∫ i (t ')v(t ') dt ' ≥ 0 −∞ −∞ 
 −
 Example:
a
piece
of
copper
wire
can
be
modeled
by
a
passive
 circuit
element.
 ECSE‐200
 3
 Ac2ve
Elements
 Ac<ve
element:
a
circuit
element
that
can
deliver
more
energy
than
it
 has
already
received
from
a
circuit.
 In
other
words,
all
elements
that
are
not
passive
are
ac2ve.
 Warning:
Although
ac2ve
elements
can
d...
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