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Introduction to Circuit Elements Notes

Created by passhojao

passhojao

passhojao,

Electric Network: Any possible interconnection of electric circuit elements.
Electric Circuit: is a closed energised network.
All circuit are networks while reverse is not true example T-network
Types of circuit elements
Unilateral: has different relations between voltage and current for two possible directions of current. Example diodes.
Bilateral: Same voltage and current relation for current in both directions, example resistors, capacitors, inductors.
Lumped: element which is separated physically like resistors, capacitors, inductors.
Distributed: are those which are not separable for analytical purposes example transmission lines in which resistance, inductance, capacitance is distributed along its length.
Linear: These have linear relationship between V & I example resistors.
Non Linear: relationship between V & I is non linear example diode, transistors.
Active: which generate or produce electrical energy example batteries, generators.
Passive: which consume electrical energy example resistors, capacitors, inductors.
Electrical energy sources : There are two types of sources of electrical energy.

  1. Voltage source
  2. Current source
    Independent sources: are of following types
  3. Ideal voltage source: constant terminal voltage regardless of the value of current through its terminals.
  4. Ideal current source: constant current regardless of the value of terminal voltage.
  5. Practical voltage source: voltage across its terminals keeps decreasing as current through it increases.
  6. Practical current source: current through terminals keeps decreasing as the terminal voltage across it increases.
    Dependent sources: These are of four types
  7. Voltage controlled voltage source (VCVS)
  8. Voltage controlled current source (VCCS)
  9. Current controlled current source (CCCS)
  10. Current controlled voltage source (CCVS)

Attachments

V-I-graph-Ideal-current-source.gif 

Voltage_Current_Graph_Ideal_VoltageSource.gif 

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