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  • Current and voltage source

    Eddy boy

    Member

    Updated: Oct 25, 2024
    Views: 1.3K
    In circuit analysis, what is the difference between voltage and current source ??current exits only when there is some potential difference then why we say only current source ?solve it!😕
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  • Eddy boy

    Member • Nov 4, 2008

    If any body know a good book of circuit analysis/electric circuit then plz tell me.
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  • rohit.kush

    Member • Nov 4, 2008

    network analysis and snthesis by "chakrabarti"
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  • gauds

    Member • Nov 5, 2008

    "Fundamentals of electric circuits" by Alexander and Sadiku
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  • Eddy boy

    Member • Nov 5, 2008

    oh! its too difficult to select which one book is perfect for me.

    Gauds please tell me about the contents of fundamentals of electric circuits
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  • gauds

    Member • Nov 5, 2008

    It is divided into three parts,Dc circuits,AC circuits and Advanced circuit analysis.

    DC circuits-basic laws,theorems,op-amps,L,C,first-order and second-order circuits,node and mesh analysis.

    AC circuits-Phasors,source transformation,three phase circuits,power analysis frequency response,mag coupled circuits,

    Advanced circuits analysis- Laplace transform and applications,Fourier series,Fourier Transform,two port networks
    (With PSPICE Examples and a small intro about MATLAB

    😁
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  • Eddy boy

    Member • Nov 6, 2008

    thanks ...
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  • Fahad Bhatti

    Member • Nov 6, 2008

    Eddy boy
    In circuit analysis, what is the difference between voltage and current source ??current exits only when there is some potential difference then why we say only current source ?solve it!😕
    well, a "source" means it has to maintain the parameter which it is source of, thus a voltage source has to maintain the voltage across its terminals regardless of the current through it ( for example if resistance is doubled in the circuit, current will be halved but voltage must remain same... V=IR )

    a current source has to maintain the current through it regardless of the voltage across it ( for example if resistance is doubled, votage across its terminals will also be doubled but current through it will remain the same.... I= V/R )

    got it brother?
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  • Eddy boy

    Member • Nov 8, 2008

    Is a battery is a voltage source? if yes then how ? it does not maintain voltage across its terminals when load resistance is altered...please give example of voltage source if any?
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  • reachrkata

    Member • Nov 8, 2008

    You got it wrong, in fact the opposite.
    A battery is indeed a voltage source. Assuming it is well charged, it maintains the same voltage irrespective of the load.

    Regarding a current source, I would say it is usually used as tool for circuit analysis. Though we can build circuits that act as a constant current source, we don't have a device (like a battery) that is a current source.

    -Karthik
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  • Aoedogg

    Member • Nov 11, 2008

    Eddy boy
    Is a battery is a voltage source? if yes then how ? it does not maintain voltage across its terminals when load resistance is altered...please give example of voltage source if any?
    In general we would assume an ideal source, this means that it would be able to maintain a constant voltage/current regardless of the load.

    In reality because of internal resistances, this is not possible. Generally in circuit analysis you would assume an ideal source, you should be aware of the deviation however.

    To answer your question, assuming an ideal source, a battery would generally be considered a voltage source.
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  • sauravgoswami

    Member • Nov 12, 2008

    ok thanks.
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  • sauravgoswami

    Member • Nov 12, 2008

    but buddy batteries are measured in Ampere/hour,so why they take current into consideratiuon when it is a voltage source???
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  • Eddy boy

    Member • Nov 12, 2008

    Explain your question #-Link-Snipped-#Current and voltage relation is like mother and son,you can never separate one from other.
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  • Eddy boy

    Member • Nov 12, 2008

    frnds are you agree ,batteries are voltage source??i will never agree let me explain you in circuit loading if the load resistance is less than battery internal resistance then how you prove batteries are voltage source.
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  • hassan.buet07

    Member • Nov 13, 2008

    yes, battery is a ideal voltage source. But it is not an ideal voltage source. It has some internal resistance in series with the load resistance. Therefore a little voltage drop occurs across the internal resistance. hence with the alternation of load resistance voltage across the load also changes.
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  • Fahad Bhatti

    Member • Nov 14, 2008

    battery is a voltage source and ideally it must maintain the voltage across it, but practically it is not seen in poor batteries as they attenuate their voltage level when used extensively, this actually happens due to charge deposit on electrodes of the battery with time... thus if no deposit occurs in batteries (i.e. an ideal condition) , then batteries will not lose their voltage even if resistance is varied
    Another good example of voltage source is Synchronous Generator, it does not vary its voltage with load but may vary the supply frequency
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