An inductor is a 2 terminal passive device that stores energy in a magnetic field.

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ESD protection on a solenoid driver circuit

I have a breadboard circuit that controls some solenoid valves and am trying to move it to a PCB along with improving it for ESD and EMI. This is the circuit I have on the breadboard that I want to ...
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what is the best method for organize several identical inductors?

In a circuit with several identical inductors, like the illustrative image, as in an equalizer or filter, the best method for isolation that requires the smallest space, considering that the inductors ...
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49 views

Capacitor and inductor power factor

I need an explanation about the leading and lagging power factor at electron level. Case1: In a inductor it has the lot of free electrons are ready to move when we applied a voltage(AC or DC). If we ...
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54 views

pros and cons of replacing a passive inductor by a gyrator

I am studying the construction of some touch sensors, and I need inductances of 10mH, I know I can easily do it, and also purchase them without much difficulty, however I know that it is possible to ...
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81 views

Beginner: Inductors in Series and Parallel HELP

simulate this circuit – Schematic created using CircuitLab I am looking for help with what is probably a very basic question but I am new to electronics. The question I have is on a ...
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2answers
70 views

Regarding Ferrite Bead

What is a ferrite bead? How is it different from an inductor? How is it rated? What are its important parameters? What allows me to chose between an inductor or ferrite bead to filter out frequencies ...
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29 views

Inductors for local power supply filtering

Lets say I have a circuit which involves an OpAmp and a comparator. They're both single supply running from a noisy USB power supply. Each component has local bypass capacitors, a big and a small one ...
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20 views

How to specify coupling in Pspice CAD?

I am doing PSpice CAD by simple schematic generation(not using netlist), I need to apply coupling and for this I need Coupling Component, but I do not know how to use that in schematic, I mean in ...
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3answers
103 views

Buck converter based switching power supply?

simulate this circuit – Schematic created using CircuitLab I have designed this circuit based on a buck converter. I'm just having trouble finding out which values to plug in. I.E. C1, ...
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2answers
81 views

Why is inductor completely canceling out current?

I used this calculator to determine that my hand-turned inductor has an inductance of approx. .5 uH. simulate this circuit – Schematic created using CircuitLab When I measure this ...
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1answer
66 views

How to use common mode choke inductors? (differential vs common mode)

I have yet to undestrand exactly how to use common mode chokes inductors, according to the datasheet they have 2 operation modes like in the picture common mode and differential mode, however im ...
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42 views

CLL(Capacitor long life)capacitor filtering to reduce the current spikes

if we are using capacitor between the coomutation segments of brush dc moto then it reduces spark generation. as main function of commutation system is to reverse the current in the coil. by using ...
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1answer
40 views

Inductor for Switched regulator

I'm implementing a Step-Down Switching Voltage Regulator with Vin = 12V, Vout = 5 V 300mA and I followed the application which is in the page 13. I have no doubts in choosing all the components ...
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41 views

IF transformer color codes

Is there any standard color code available for IF transformers? Generally in most of the Japanese radio receivers I see red color slug for MW oscillator, white and yellow slugs in AM IF stage, ...
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0answers
54 views

Understanding an op-amp LC tank circuit?

This is a circuit diagram for an op-amp LC tank circuit. I understand that the LC Tank circuit will decay unless some selective outside current is added, thus the op-amp. I'm simply having an ...
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1answer
53 views

Frequency vs. Amplitude modulation in a circuit?

I'm trying to create two circuits that will eventually be added to a larger circuit in a custom PCB. A basic radio transmitter needs to hook into my computer via USB, and transmit data to a ...
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1answer
34 views

Help with basic inductor

I need some help with this basic inductor. If I have the current in that direction and those values of voltage and inductance, what is the value of $$\frac{di}{dt}$$ ? I know that: ...
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4answers
123 views

Is it possible to have voltage across an inductor without having current through it?

Example : In certain cases in transformers we do assume so having zero current in the secondary but there is still a voltage across it due to mutual flux . Also we do similar things while calculating ...
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2answers
142 views

Core saturation detector-differentiator

I am building some project that requires me to measure the saturation corrent of some homemade inductors winded on scavaged ferrite cores, so I decided to try and create a circuit that will aid me in ...
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32 views

Mutually Coupled Inductors

Hello there im working on a project in which i'm making a wireless mobile charger. Im using two mutually inductors for transferring power wirelessly i want to transfer 14V (AC) from my primary coil to ...
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2answers
60 views

Why is there an inductor in this power supply circuit for SAM3X MCU?

I am working on a senior design project and am trying to embed an ATSAM3X8E (Here is the Application Sheet PDF) micro-controller into a system my team is designing. What is the pourpose of ...
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2answers
95 views

Calculating resistance and reactance of an coil (motor winding)

I want to find out the resistance and the reactance of an motor coil. I can measure the magnitude of the current through the coil using a DMM. For example, If the voltage across the coil is 230v ac ...
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1answer
40 views

Inductor Core Loss: Volt-uS vs. Irms vs. Switcher Frequency

For DC to DC application, I see these charts often for inductors, but I don't understand what they actually mean. What does this chart mean, and how does it relate Volt-uS, Irms, & Freq? Edit: ...
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116 views

How does a transformer transmit power from the primary to the secondary?

I'm trying to get my head wrapped around transformer operation and in the process regretting the times I snoozed in my Electromagnetics class as a EE student back when I was a lad :) I'm looking for ...
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22 views

How to chose a right inductor for a matching circuit

I would like to chose an inductor to make a matching circuit. Operating frequency is 6.1 GHz. I am more concerned with self resonance frequency and Q of an inductor. An inductor with SRF > 7 GHz and ...
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35 views

a Half Rectified AC, filtered by an inductor in series

What does a Half Rectified AC, filtered by an inductor in series' Voltage will look like?? I think it would be still pretty much the same, or will it be much different than that?
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131 views

Toroidal inductors

I made some inductors with CF196T1305 ferrite cores ( http://www.cosmoferrites.com/Downloads/ProductSize/3defd392-c210-4f70-a6c6-70f5b60b1953_T1305%20_WS.pdf). According to the data sheet these ...
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1answer
68 views

Diy inductor saturation current

I have a boost converter that will convert 12V and 11A to around 20V and 6A. Since I didn't find any inductors (in my local stores) capable of such currents and frequencies and the correct inductance ...
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2answers
90 views

Would an inductor and a wire in parallel have an equivalent inductance of 0?

Since the equation is \$\frac{L_1L_2}{L_1+L_2}\$ and one of the wires has an inductance of zero , would the \$L_{eq} = 0\$?
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1answer
46 views

USB powered Switch Mode Li-ion Charger

I want to design a Switch Mode Li-ion charger which uses 5V as input and charges a single cell Li-ion cell. I am referring this AppNote On page 4 they have given the equation to find inductor value ...
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1answer
45 views

Inductor for boost converter circuit

I'm using an AAT1217 for the boost converter in my circuit. The reference circuit I'm using is: The datasheet suggests several inductors: It suggests using these fairly large inductors, the ones ...
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2answers
287 views

AC Power loss of inductor in a buck converter

I have a custom piece of equipment that gives a value for AC power loss (Pac) for an inductor plugged into an internal buck converter circuit. The custom equipment has an oscilloscope which is ...
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1answer
38 views

Use Preformed inductor instead of coil for FM Transmitter

I want to build this transmitter: The inductor in the schematic says 0.1uh so I figured I could get some of these and use them instead of making my own like it describes in the picture. I would be ...
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3answers
136 views

Why does the MCP1650 datasheet give such a low value for the inductor in a boost converter?

I'm currently designing an SMPS around an MCP1650. In the datasheet (see page 4), the recommended value of inductor is 3.3uH. However, all the inductor size calculations I've come across (here and ...
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1answer
43 views

Stray Capacitance in my load waveform?

I have just taken this trace of my Loadwave form for PWM controlled halogen dimmer. I was wondering if anyone could identify the cause of the transients below or above zero volts for each polarity. ...
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1answer
37 views

Size of inductors in passive filters

I was reading about why we need active filters even when we have passive filters with us. I got to know that one of the main reasons for doing so, is that at lower frequencies the size of the inductor ...
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1answer
73 views

Measure inductor coil's resistance using multimeter

simulate this circuit – Schematic created using CircuitLab Above is the set-up of my simple experiment to determine the inductance of an inductor. The voltage across resistor R (5 ohms) ...
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2answers
383 views

Why do we rectify then invert current in induction heaters?

I was trying to build a simple zone refining prototype, so I thought of How to simplifying induction heater for zone refining? I throughly read What does a beginner need to know to build an inductive ...
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2answers
41 views

Calculate rotor slip without knowing synchronous speed

I am given the rated values of a squirrel cage induction motor: A 300hp, 2300V, 3‐phase, 60Hz squirrel‐cage induction motor turns at a full‐load speed of 590r/min. What is the approximate value ...
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4answers
209 views

How does inductor store energy?

I know that the capacitors store energy by accumulating charges at their plates, similarly people say that inductor stores energy in magnetic field. I cannot understand this statement. I can't figure ...
2
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1answer
43 views

Buck Converter Multiple inductors

I'm looking at a height constrained application, that's making it difficult to find the power inductors I need. What's wrong with say using 4 inductors in parallel to get more current? I know the ...
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4answers
102 views

Why would anyone use an inductor on a mux?

I read a schematic where it has a Z80 CPU tied to a 78LS138. The CPU's WR line is tied to ...
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1answer
59 views

Newbie RLC Question

Hoping someone can help. I have been studying RLC series circuits. The first set of questions gave the value of resistor, inductor and capacitor, which were calculated as follows: To calculate ...
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1answer
24 views

How is quality factor affected when combining inductors?

Lets say I have an inductor, L1 = 22 nH, with a quality factor (Q) of 50. I need an inductor of 44 nH, so I put two L1s in series. Will the Q of "the combined inductor" be 50? What if I want half ...
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2answers
43 views

Does gauge size of a signal wire has an effect to its susseptability to electromagnetic interference?

Let's say you have the option to use a lower gauge wire size (i.e. thicker wire) for a signal wire that happens to be run along power wires. Will it pick up more electromagnetic interference than ...
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1answer
50 views

Hi, in following circuit how do i calculate value of inductors L1, L2, L3, L4. (Design equations for inductors)

What will be the design equation to calculate values of inductors L1, L2, L3, L4.
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1answer
104 views

How to correctly use a LC meter/bridge

I have a LC meter at hand that I'd like to use it to measure the inductance (dominated by L1) of a circuit branch like this : simulate this circuit – Schematic created using CircuitLab ...
0
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1answer
62 views

What is the purpose of an inductor on an incoming AC line?

I am trying to build the following schematic. It is a AC/DC converter from Cui link I do not understand the function of L2. What is its purpose? I am having a ...
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1answer
106 views

Can I measure inductor current by adding a secondary winding?

I have a buck converter and I want to add a current loop to it. I don't want to use a hall-effect sensor or something expensive like that. I think it is not practical to use a sensing resistor since ...
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1answer
125 views

Why inductors can not be integrated into IC? [duplicate]

If passive components like resistor and capacitor can be integrated into an IC, why not inductor?