Electrical Engineering Stack Exchange
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Questions tagged [voltage-source]

Anything related to voltage sources, their circuit models and their practical circuit implementations. An ideal voltage source is a two terminal device whose output is a voltage signal with a given waveform regardless of its load, i.e. irrespective of the circuit to which is connected.

Anything related to voltage sources, their circuit models and their practical circuit implementations.

An ideal voltage source is a two terminal device whose output is a voltage signal with a given waveform regardless of its load, i.e. irrespective of the circuit to which is connected. Practical devices and circuits only approximate this behavior.

See Wikipedia on voltage source.

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Do batteries (voltage sources) supply constant voltage?

I know that voltage sources are those that can supply constant voltage. The producing current may vary with the load. Suppose I have a rechargeable battery. I fully charged it and started using it. After some time I have to charge it again. I'm not…
Raihan Khalil
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Can a voltage source have 0 power

I am facing a problem with a voltage source with 0 current through it. Will the power of that source be 0 according to the formula P=V*i? Is there a reason to use such a source if it neither provides nor receives energy ? Thanks.
Δημήτρης Μουστρούφης
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Problem about superposition theorem

For the circuit given below the voltage across the resistor is definitely 5V. If we add more than two sources the voltage will remain same as before. If we try to analyze the circuit with superposition then first we have to make one of the source…
Raihan Khalil
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Is COM wire the same as Neutral wire in AC?

I am reading about a thermographic camera installation and I found in the schematic this diagram which has COM terminal and 24V, I have that physically and I was wondering if the COM terminal is the same as Neutral? (I underlined both terminals with…
imt_blake
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Flow of current inside source

Does current flow in/inside an ideal AC voltage source/generator like it flows in an ideal electrochemical battery? How does the process happen?
Alex
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Current flowing inside voltage source or battery

Current is the flow of charges (many say electrons). Do these charges flow just between the terminals of the source/battery (terminal to terminal) ? Or These charges flow through/inside the source/battery as well? What i know is that the positive…
Alex
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What is an example of a three-terminal current-controlled voltage source?

Dependent sources come in four flavors: voltage-dependent current sources (e.g. a FET can act as a VCCS) current-dependent current sources (BJT) voltage-dependent voltage sources (OpAmp as an example of a linear component) current-dependent voltage…
DK2AX
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Back up 9V battery when circuit is unplugged from AC

I have to work on a circuit that basically goes like this. I have two voltage sources, a 9V battery and AC. The AC is the main source, however, when this is unplugged, the 9V battery must come to the rescue after 5 seconds. For this work, I truly…
Fernanda
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How do I determine this node voltage?

I'm wondering why the node voltage of C will equal to Vc = Vd + 770 I've done research but have no clue. Any help will be appreciated.
21rw
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Voltage sources in parallel

If we attach two voltage source of same value than what happens? I mean what's the difference between using a single voltage source and two same valued voltage sources in parallel? As they both supply same voltage in the circuit.
Raihan Khalil
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current dependent voltage source problem

Hey, I am studying dependent sources.as an exercise i am trying to solve the circuit in the image. i have been banging my head against the wall on this problem and i really want some help. please. I tried node analysis always ending up with one…
raspberry_3.14
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