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 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 ...
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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 ...
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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 ...
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Why relay module occasionally switches by itself ON?
I am using this common relay module from Ebay (image below). It works very well 99.9% of time. It's controlled by ESP8266. It's in the plastic box with some AC wires (which are obviously plugged in ...
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ignition timing light trigger current
I've built an ignition timing light, following:
http://citroen.tramontana.co.hu/en/ignition/stroboscopic-timing-light
here the original schematic:
I've changed some components:
Instead of the ...
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Electromagnetic Energy Harvester
It was suggested I make a new post since the topic was growing in complexity.
I am looking into constructing an inductor to utilize electromagnetic induction near a high voltage transmission line. If ...
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Torque-Slip Characteristic Stability Analysis for Induction Motor
I am having confusion for this stability question of induction motor.
The real question is here
I searched and searched online, keep reading and reading, but still not enough to answer my doubt.
My ...
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I wanted to make plasma pen. So I made mini ZVS circuit which worked but when I connected it to inductor and transformer it stopped working
I had used these components 333 ohm resistors, an led as indicator, 1uF capacitor (50V), NIKOS P75N02LDG MOSFETs,4R7 inductor, PH 4148 diodes, ccfl transformer from laptop backlight inverter board ( ...
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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. ...
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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 ...
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Why can domestic induction stoves heat aluminium tape, but not aluminium pans?
Domestic induction stoves can't be used with thick aluminium or copper pans, but when I try to heat aluminium tape it does get hot.
Can someone explain why this is the case?
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How does induction heating work?
There is unbelievable amount of contradicting information on the internet. The textbooks don't explain it in enough depth, so I have to ask here.
I have an induction heating system which has a coil ...
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How does the diode work out the reverse voltage spike of DC motor?
I'm learning myself a simple circuit, where a BJT is used as a switch for a motor load. It'd look like this example; you can easily find tons of such.
In the internet, they say that I need a diode ...
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What is the maximum power transmitted through NFC that can be harvested?
What is the maximum power an NFC-enabled card can draw from a contactless payment terminal? What are the determinants (i.e. card reader voltage)?
What techniques are available for harvesting this ...
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What good is an induction coil in a dimmer switch?
I asked about a dimmer switch, and was told one has an induction coil. What benefit is an induction coil in a dimmer switch?
ZE-02S has induction coil built-in on the circuit board, so it is 5/8" ...
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Help me to understand the working of induction cooker circuit
I am new to electronics So I need help to understand the working of the induction cooker circuit. I searched on the google but could not find the simple answer. Below is the attached circuit commonly ...
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Unknown induction motor wiring?
I just took apart an old dishwasher for parts. The large motor I got from it seems to be an induction motor. It has 4 wires. Green, yellow, red, and blue. I know for a fact that the green one is ...
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How to measure coupling coefficient?
I have an EE core with one winding on one outer leg and a second winding on the other outer leg. I am measuring the inductance on one winding by having the other winding open and vice versa.
For the ...
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Charging by electrostatic induction
In the given figure, if we connect the positively induced side of the sphere to the earthing instead of connecting it to the negatively induced side, then will the sphere get negatively charged ...
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What does a beginner need to know to build an inductive heater?
I'm a programmer by profession and building skills in metalworking and my goal is to build certain types of chemical reactors. As a learning project, I want to construct a programmable deep fryer. One ...
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Detecting a low pulse from an electromagnet induction
I am designing something similar to a coil gun. So what I have is a magnet passing through/adjacent to a coil. Due to the electromagnetic induction, I do get a pulse(triangular) across the coil. ...
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Does a turbine experience a countering electromagnetic force while it induces a voltage? [closed]
I am assuming yes, because of the law of conservation of energy. A certain amount of energy is required to turn a turbine. So if we want a turbine to spin as well as induce a voltage, then more energy ...
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Mutual Inductance Practical Explanation
I can't understand why the Mutual Inductance is measured in Henry. The self inductance of a coil is the abillity that has a coil to create a magnetic field that produses a voltage on itself so to ...
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HF signal in a null experiment. What is the exact mechanism?
Since I've tried to experiment with electronics, I am faced with the problem of HF noise and signals bypassing almost anything I try to stop them. This begun with my attempts to filter the noise of a ...
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what is the use of ultrafast diodes in wireless battery charger ckt
Instructable
I am working on a wireless charger that uses a ZVS Driver circuit for the transmitting end. This is its circuit diagram:
I have attached the instructable where this came from. Wireless ...
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Increasing efficiency of a kinetic energy battery charger
I want to use Faradays law to convert the kinetic energy from actions such as a jog/shake to produce electricity to ultimately charge a battery.
Materials
Neodynium Magnet 3/4 diameter (2)
Solenoid ...
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A question about Faraday’s law of induction for a closed path
As far as I understand, Faraday’s law states that a varying magnetic field through a closed path creates an E-field along the closed path. And the integral of this field we call electric potential or ...
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Transformer with Single Turn Secondary in an Induction heater
I was thinking of a circuit which essentially has a series LC circuit connected in between an H bridge. There were certain things, I wasn't sure if I understand correctly, and would appreciate any ...
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What can I use to increase efficiency of inductive wireless energy transfer instead of factory manufactured ferrite plates?
The Context
I am a hobbyist with no education in electrical engineering. I am working on a DIY project trying to make water resistant rechargeable bicycle lights. I am doing this as a hobby for fun ...
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Inductor Back EMF Direction Relative to Changing Current
I have spent a lot of time thinking about Faraday's law and common explanation as given on wikipedia does not sit well with me. I may be confused. My concern is entirely with the wording of this ...
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