2 votes

Can this circuit with two resistors oscillate?

This theoretical condition produces an infinite current (or a singularity) when R+ & R- = 0 and thus an infinite voltage across either resistor for any input voltage from a theoretical ideal ...
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2 votes

Can this circuit with two resistors oscillate?

It doesn't oscillate. It only has current opposite to the instantaneous voltage. There is no feedback effect, so no oscillation.
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Finding the "drop in potential" as current moves through a single resistor of a circuit with parallel resistors

The 4.8 A flows out of the battery into the parallel combination of 4 resistors. It should be clear that not all of the current flows through the 10 ohm resistor but only a portion. You have assumed ...
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  • 14.9k
2 votes
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Finding the voltage available at the terminals of the battery in a circuit with parallel resistors

21.6V is the voltage across your external resistance, after the internal resistance of the battery. If you are taking the - terminal of the battery to be your ground (0V), the voltage at the + ...
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  • 6,530
2 votes

Peak current of inrush limiting inductor?

The maximum current will depend upon where in the AC cycle the power is turned on. simulate this circuit – Schematic created using CircuitLab If the power switch is closed at the zero-crossing ...
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2 votes
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How to sketch the waveform of the voltage across capacitor and find equation that describes it?

The voltage across the capacitor can be found using Laplace transform: $$\text{V}_\text{C}\left(t\right)=\mathscr{L}_\text{s}^{-1}\left[\frac{\frac{\hat{\text{u}}}{\text{s}}}{\text{R}+\frac{1}{\text{...
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1 vote

How would you find the impedance of this circuit?

Is there a way this circuit can be redrawn to have more of an intuitive layout? Yes there is: - simulate this circuit – Schematic created using CircuitLab This redraw allows you to see what ...
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Peak current of inrush limiting inductor?

TL;DR Your initial question bears no resemblance to the actual design. The soft-start on the feedback will greatly reduce the stress on the components. This is a transformer and optoisolated forward ...
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1 vote

Can this circuit with two resistors oscillate?

Quote (emnha): ....I'm interested in the theory if two R, -R can oscillate with frequency unspecified No - this is imposible because this would violate the oscillation condition which requires that ...
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  • 22.5k
1 vote

Can this circuit with two resistors oscillate?

UPDATE: EE&O, for those who are interested (and would check ... already pointed out by @Tony Stewart EE75 ...) in the behavior of the "negative" resistor, here is an example of what ...
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  • 3,598
1 vote
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Finding resistance for parallel resistors: how is my reasoning incorrect, and what is the correct reasoning?

It looks like you do not see what path the current is taking in this circuit. This may be handy
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1 vote
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Calculating the reading on ammeter \$A_1\$: why am I incorrect?

Ohm's law states U=R*I (or I=U/R). Where you got it wrong is on which "U" (ie which voltage) is the one to use. The voltage U is the voltage drop across the resistor R (through which flows ...
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  • 2,568
1 vote

Finding the voltage available at the terminals of the battery in a circuit with parallel resistors

The voltage between the terminals of the [battery plus internal resistance] is 21.6 V. If the negative terminal of the [battery plus internal resistance] is Grounded, it is considered to be Zero Volts,...
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