What is source voltage: Definition and 12 Discussions

A voltage source is a two-terminal device which can maintain a fixed voltage. An ideal voltage source can maintain the fixed voltage independent of the load resistance or the output current. However, a real-world voltage source cannot supply unlimited current.
A voltage source is the dual of a current source. Real-world sources of electrical energy, such as batteries and generators, can be modeled for analysis purposes as a combination of an ideal voltage source and additional combinations of impedance elements.

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  1. ARoyC

    Engineering Load Line Analysis of a Diode

    I have drawn the I-V characteristic graph of the diode. I am facing problems with drawing the load line. For what value of E (Source Voltage), should I draw the Load Line? To get the I-V graph, I had to continuously change E.
  2. I

    Need a voltage divider for a capacitor source voltage

    The end goal is I need to convert a sinusoidal into a square wave using a zero crossing circuit. I have a voltage that ranges from 0 to 400vrms @70kHz from a capacitor that is part of an induction heater tank circuit. My comparator has a peak differential input of +/- 35v so I need to reduce the...
  3. A

    I Inductor questions (generate a voltage opposing the source voltage?)

    1) Why does there have to be an inductor to generate a voltage opposing the source voltage? Doesn't the circuit create back voltage without an inductor? 2) In ##U = \frac{1}{2}LI^2 + \frac{1}{2}\frac{Q^2}{C}## ##E = \frac{1}{2}mv^2 + \frac{1}{2}kx^2## where ##x(t) = Acos(wt + \phi)## following...
  4. goldensquid2000

    Voltage across a Capacitor More than the Source Voltage?

    Hi everyone, I'm new to this forum so I apologise in advance if I may have posted in the wrong forum or made a similar error. I recently conducted an experiment with some peers where we measured the voltage across a charging capacitor in an RC circuit over a period of time. The diagram is...
  5. S

    Source voltage amplitude

    Homework Statement An ac series circuit consists of a voltage source of frequency f = 60 Hz and voltage amplitude V, a resistor of resistance R = 163 ohms and a capacitor of capacitance C = 6.2x10^-6 F. What must the source voltage amplitude V be for the average electrical power consumed in...
  6. P

    Gate source voltage and gate cathode voltage

    I am studying thyrisors right now. I am really struck at trigger circuit . The book shows gate source voltage and gate chathode voltage as two different things. I fail to understand the difference and significance of them. Please help me out .
  7. L

    Phase angle between peak source voltage and peak voltage across RLC?

    Homework Statement An LRC series circuit with R = 200Ω , L = 31mH , and C = 1.8μF is powered by an ac voltage source of peak voltage V0 = 540V and frequency f = 550Hz. What are the peak voltages across the inductor, capacitor, and resistor and their phase angles relative to the source...
  8. D

    Calculate Gate Source, Drain Current, and Source Voltage of a JFET

    Homework Statement Uploaded Homework Equations Uploaded The Attempt at a Solution So what I started with is Vg=(R2/(R1+R2))Vdd - 10 = -7 Volts this is incorrect though I was told it is -4 V what did I do
  9. G

    Sketching the Source Voltage

    Homework Statement Sketch the source voltage from 0 < t < 7T with a source resistance of 0.5*Z_C and a load resistance of 2*Z_C and a signal generator that delivers a 1-V triangular pulse train down a lossless coaxial line. See image attached Homework Equations Equations to find...
  10. C

    Condenser capacity inversely proportional to source voltage - why?

    Hello everyone. I indeed like to understand the things I am learning, and for the love of me, I cannot understand why, according to the formula, capacity of a condenser in a circuit consisted of said condenser and a power source is inversely proportional to the power source's voltage. Could you...
  11. K

    Transformer with attached load: required source voltage

    1. A large power transformer has a turns ratio N1 / N2 of 1:5. When the primary voltage is 400v and it is connected to a resistive load its secondary current is 100A. Calculate the required value of source resistance of the supply to give a maximum power trnasfer 2. Vp = 400v, Ratio 1:5...
  12. K

    Source Voltage and Max Power

    Homework Statement A practical voltage source has a voltage effieciency of 90% when connected to a load of 9 Ohms. When connected to a load of 4 Ohms, the load voltage was 160V. Determine the source voltage and the max power. Can anyone help me with this question? Homework Equations...