Nodal Analysis Background M. A. Hameed ECSE Department Rensselaer - - PowerPoint PPT Presentation

Nodal Analysis Background

• M. A. Hameed

ECSE Department Rensselaer Polytechnic Institute

Intro to ECSE

• M. Hameed

Kirchhoff's Current Law (KCL)

• Definition: The algebraic sum of all currents at

a node is zero.

Other words: The sum of currents entering a node equals sum of currents leaving that node. Alternatively, if we assume all currents leave a node, the sum of all currents leaving a node is zero.

𝑜=1 𝑂

𝐽𝑜 = 0

17 September 2019

• M. Hameed
• KCL is based on conservation of charge
• Uses: Along with Ohm’s law, KCL is used to

perform Nodal analysis

17 September 2019

• M. Hameed

Example

17 September 2019

←

high

I

,

=

VB

• VA

l

R2

RT

Va

.

• nine-man

."

I ⇒

Iz

= V

Iz I § 123

Rz

/

Iz

=

VB

• VD

to b

• R 3

3

@ node

§ In

= o

⇒

"

3¥

"

t VY÷

+ 43,5¥

=

• B

n= I