Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [induction]

Induction is the process by which the electrical or magnetic state of a body is influenced by the action of electrical or magnetic fields by proximity without contact between a “source” body and the influenced body.

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How does a DC clamp meter measure current?

I understand that for AC clamp meters, a changing magnetic field induces a voltage/current in a wire loop and therefore it is possible to measure AC currents by induction. But how does a DC clamp meter work? In essence a DC current means a static…
S.s.
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According to my understanding, this induction heater should be melted, but it's not. Why not?

I opened up this induction heater to find that it only has maybe 12 AWG wire in its work coil, rated for 30 A RMS. I've been doing induction heater simulations for a project, and the two topologies I've looked at (series and parallel half-bridge…
Popeye
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Electrocuting a fruit fly using magnetic induction

We are electrically inducing heart attacks in fruit flies to test the effects of various treatments on survival. We are shooting for roughly a 50% survival recovery rate in our control group. I work with a lab that is studying cardiac function in…
user146252
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If you have two identical but oppositely wound inductors does the inductance effectively cancel?

I was just curious if the effect inductance of a branch of a circuit would cancel if you put two identical but oppositely wound inductors in series. It's not something I have come across.But looking at the change in signs I imagine this to be the…
Dave
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Does someone have a non-textbook analogy to explain elements of a circuit?

I was wondering if someone could explain with analogies what inductors, capacitors, transistors, diodes, and op amps do? I understand the basic idea; I'm currently an Electrical Engineering student. I already know the textbook definitions, but I was…
Kenny Truong
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Can two voltmeters connected to the same terminals show different values? Circuit with induced EMF

The circuit shown below consists of two resistors connected in series that form a closed loop. No electrical sources are in that loop.Let’s assume that the resistance of the wires that connect the resistors and form the loop is zero.Inside the loop…
Slaven Tojić
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H bridge not switching correctly - Induction heater

I've been working on an induction heater over the last few months and have had varied success. I can drive about 600W through it but as I begin to push past this point it isn't long until one of the FETs explodes. Below is the circuit schematic I…
Junkers
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"Where" does back EMF appear in motor?

I've been trying to understand EMF, specifically back EMF in electrical motors, such as for example a setup like this: Say that we apply a voltage to the brushes. I understand that once the rotation gets going, a current will be induced by the…
Daniel Nilsson
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Are induction stoves considered inductive loads?

I know a washing machine and a coffee grinder are considered inductive loads so when doing math for wiring you would multiply wattage by 2x to be on the safe side. Just one plate of my inductive stove, apparently, is the biggest load in the house.…
Arthur Tarasov
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What happens to parts of induction cooker magnetic field not covered with the pan?

An induction cooker works like this. There's a flat coil of wire under the cooker surface which is connected to a source of high frequency AC and it produces an oscillating magnetic field with field lines oriented vertically. A suitable pan (with…
sharptooth
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Working of miniature Tesla coil?

Can anyone explain the given circuit. I seem to have done it and its perfectly working. But can someone explain the principle/theory and working behind this circuit from when the switch is turned on.. And I also didn't connect the LED If I bring a…
Hayagreev S
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Doubling the length of a solenoid doubles its inductance. Two identical solenoids in series have up to four times the inductance due to M. Why?

The inductance of a long solenoid with \$N_o\$ turns and a length \$l_o\$ is $$L_o=\pi r^2 \mu_0\frac{N_o^2}{l_o}$$ If I now make a new solenoid, \$L_{new}\$, with double the length of the original (\$l_{new}=2l_o\$) and double the number of turns…
SalahTheGoat
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Sinusoidally squeezing a capacitor

Assuming no load, how does continuously changing the distance between the plates of a capacitor (in a sinusoidal fashion for simplicity) affect the output voltage? Does electromagnetic induction come into play in this scenario? I understand there…
WantsToKnow
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Induction Oven Circuit

I’ve been trying to build an induction cooktop, my inspiration was this post: https://www.instructables.com/id/Powerful-yet-simple-induction-heater/ And after some help , I’ve built a circuit according to this schematic: And it actually worked! I…
Fábio
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How does the inductor ''really'' induce voltage?

I'm trying to understand the concept but I can't find what I'm looking for. Sorry if I'm wrong at some points as it's the first time I'm studying these stuff. I understand that when I have an RC circuit the electrons gather at the one plate of the…
John Katsantas
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