This module describes how to find the Thevenin and Norton
equivalent circuits of an RLC circuit and sources.
When we have circuits with capacitors and/or inductors as wellas resistors and sources, Thévenin and Mayer-Norton
equivalent circuits can still be defined by using impedances andcomplex amplitudes for voltage and currents. For any circuit
containing sources, resistors, capacitors, and inductors, theinput-output relation for the
complex amplitudes of
the terminal voltage and current is
with
.
Thus, we have Thévenin and Mayer-Norton equivalentcircuits as shown in
[link] .
Let's find the Thévenin and Mayer-Norton equivalent circuitsfor
[link] . The open-circuit voltage and
short-circuit current techniques still work, except we useimpedances and complex amplitudes. The open-circuit voltage
corresponds to the transfer function we have alreadyfound. When we short the terminals, the capacitor no longer
has any effect on the circuit, and the short-circuit current
equals
.
The equivalent impedance can be found by setting the source tozero, and finding the impedance using series and parallel
combination rules. In our case, the resistor and capacitor arein parallel once the voltage source is removed (setting it to
zero amounts to replacing it with a short-circuit). Thus,
.
Consequently, we have
Again, we should check the units of our answer. Note in
particular that
must be dimensionless. Is it?
what's the difference between a firm and an industry
Abdul
firm is the unit which transform inputs to output where as industry contain combination of firms with similar production 😅😅
Abdulraufu
Suppose the demand function that a firm faces shifted from
Qd 120 3P
to
Qd 90 3P
and the supply function has shifted from
QS
20 2P
to
QS
10 2P .
a) Find the effect of this change on price and quantity.
b) Which of the changes in demand and supply is higher?
Demand curve shows that how supply and others conditions affect on demand of a particular thing and what percent demand increase whith increase of supply of goods
Israr
Hi Sir please how do u calculate Cross elastic demand and income elastic demand?
Abari
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