Tellegen’s theorem states that the algebraic sum of powers in all branches in a network at any
instant is zero. This theorem is valid for any network that may be linear or non-linear, active or
passive and time varying or time invariant, and all branch currents and voltages in the network
must satisfy Kirchhoff’s laws.
According to Tellegen’s theorem, the rate of supply of energy by the active elements of a
network equals the rate of energy dissipated or stored by the passive elements of the network.
Tellegen’s theorem is stated mathematically as follows:
VI
K
b
kk
=
=
∑
0
1
V
k
and I
k
should satisfy ...
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