Next: 2.3.3.8 Voltage Controlled Current
Up: 2.3.3 Devices
Previous: 2.3.3.6 Current Source
The constitutive relation for an ideal voltage source is given as V = V_{0}(t). The voltage can
be arbitrarily timedependent and several common curve shapes have been
implemented. However, no dependence on solution variables is allowed as this
would result in a voltage or current controlled source (see Section 2.3.3.10
and Section 2.3.3.11). The stamp is given as
y_{x, y} 


I 
f 
n_{1} 


1 
I 
n_{2} 


1 
 I 
I 
1 
1 

V_{0}  V 
Again, the sign of the current is different as compared to the passive
elements as it is defined to flow out of the source.
Generalizing the branch relation to
V = V_{0}(t)  I^{ . }R, that is to a
voltage source with series resistance, gives the following stamp
y_{x, y} 


I 
f 
n_{1} 


1 
I 
n_{2} 


1 
 I 
I 
1 
1 
R 
V_{0}  V 
Eliminating the current I results in the stamp for the current source
with shunt resistance and corresponds to a NortonThevenin transformation
of the source. For V_{0} = 0 one gets the stamp of the linear resistor.
Next: 2.3.3.8 Voltage Controlled Current
Up: 2.3.3 Devices
Previous: 2.3.3.6 Current Source
Tibor Grasser
19990531