function and graph in electronics

Discussion in 'Math' started by vead, Aug 21, 2016.

  1. vead

    Thread Starter Active Member

    Nov 24, 2011
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    8
    Hello
    We know voltage and current signal represent over time
    Example :voltage at 2 sec , voltage at 3 sec... Etc. Also voltage and current signal represent by the sin, cos waveform. I understand that dv/dt means rate of change of voltage over time. What is use of functions and derivatives of function in electronics circuit. Please someone can explain with example related with electronics?
     
  2. WBahn

    Moderator

    Mar 31, 2012
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    4,788
    The voltage across an inductor is proportional to the time rate of change of the current through it.

    V = L · di/dt

    Now go read (and study) the chapter on first-order circuits in just about any introductory EE text.
     
  3. crutschow

    Expert

    Mar 14, 2008
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    3,227
    We need calculus to calculate the operation of electronic circuits because the currents and voltages of capacitors and inductors are a function of time and calculus is needed to calculate that variation with time.
    We can use Laplace transforms to convert the calculus functions to algebraic equations that are easier to solve, but the basis of those function is calculus.
     
  4. vead

    Thread Starter Active Member

    Nov 24, 2011
    621
    8
    OK first order circuit are circuit that contain only resistor or capacitor. Two possible types of first order circuit
    RL circuit
    RC circuit

    Now I am reading, if I don't understand, I will ask
    Thank you very much
     
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