Summary - Introduction to Electronic Engineering (ELEC0002)
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Course
(ELEC0002)
Institution
University College London (UCL)
A summary of the lecture notes for Introduction to Electronic Engineering (ELEC0002) course at UCL. Can be used for most introductory electrical/electronic engineering courses for first year. Contains brief handwritten notes with important formulas highlighted and including some figures.
potential and potential difference
·
electrostatic potential exists at each point in the circuit
·voltmeters only measures potential differences between two points
power dissipation
·
P: IV =
= ICR
·
PCR if current is constant
·Pc* if voltage is constant
Kirchhoff's Law
·
First law
·
the algebraic sum of currents flowing at anode of a circuit is zero [I = 0
·secondlaw
·
sum of voltages around a closed loop is zero [CEMFS -
IR products) 0 =
·
Mesh analysis (for currents)
·
Divide the circuit into a mesh of loops each carrying a current
·
apply Kirchhoff's and Law to each loop to get a set of simultaneous equations and solve the equations
·
Nodal analysis (for voltage)
·
choose one node as v0
=
and figure out all the potentials we can at other nodes
·
Un will be the only unknown potential and use Kirchhoff's 1st law to solve for Un
S uperposition Theorem
·
the response in any branch of a linear circuit having more than one source equals the sum of the responses caused
by each source acting alone when all the other sources are replaced by just their internal resistances
·
a component is linear when its output is proportional to its input
·linear components: capacitors and resistors
·
non-linear components: diode
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