Questions tagged [ferrite]

Anything related to the properties and applications of ferrites. Ferrites are ferrimagnetic compounds widely used in the manufacturing of electrical devices exploiting magnetic fields like inductors and transformers.

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High Frequency Ferrites for Transformers

There are many Ferrite material grades Available.The optimum frequencies start around 20KHz and extend well into the MHz range.There are also many core sizes to go from watts to Kw .Planar cores are ...
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34 views

Ferrite rod antenna for DCF77 simulator

Where I live, in central Italy, the signal of DCF77 (the German longwave time signal and standard-frequency radio station, which operates at a frequency of 77.5 kHz) is so weak when it arrives, that ...
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Selecting a stable operating point in a core loss vs temperature graph

Not a native english speaker so please bear with me. I want to build an Inductivity of 10uH for a sinewave current (50kHz, 0.5A RMS) and calculate the magnetic resistance . Magnetic Flux should stay ...
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166 views

GSM interference on an wireless micrphone

I am getting GSM Buzz on a wireless micrphone system. The interference is coming from the Micrphone itself as it is transmitting it in the audio and is not being caused by direct RF interference with ...
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2answers
323 views

Ferrite ring vs ferrite choke interchangeable?

I am assembling a Gimbal controller that needs "Ferrite rings". Can I use Ferrite clamps instead? Do they do the same thing? manual requirement: What I want to buy:
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How to determine approximate type of SMD Ferrite Chip

I am reverse-engineering a device so that I can develop my own, compatible device. There are a number of SMD Ferrite Chips (size 0603) inside. A quick look at Digikey shows that there are almost 600 ...
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41 views

Calculating inductance of inductor that has ferrite core and a large air gap

I'm working on a coil on a PCB that will have a small ferrite core place in the center, with a large gap. I'm trying to come up with a decent equation to estimate the inductance of this inductor. I'...
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1answer
33 views

Comparing transformer set ups

Is it practical to connect the output of a ferrite-core 1:40 transformer in series with the input of a 1:6 ferrite-core transformer as a means of acquiring 240 V?What would the pitfalls be of this ...
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69 views

ferrite core code

I have a broken ferrite core with about 3.2mm air gap (I am not sure about it). I attached that core's picture the code is: Kaschke 4 . 14 871 . 10 01/07 How can I find the characterize about this ...
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1answer
78 views

Why Ferrites are used as a cores for inductors

Why specifically we use the ferrites as a core for the inductors? For example a NiZn toroid as a core for an inductor?
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52 views

Is this setup proper to observe the attenuation effect of a common mode choke?

I'm trying to prepare a setup to see the effect of this torodial ferrite ring.. Even though I still didn't understand what way to wind wires to obtain a common mode choke(I saw differnt ways of ...
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102 views

Ferrite N87 losses below 10 kHz

I use ferrite N87 cores (datasheet), and I would need losses in the frequency range 50 Hz to 10 kHz. The datasheet on page 5 specifies losses between 25 kHz and 600 kHz. I could try to interpolate ...
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1k views

Push-pull converter transformer calculation

every one, I am an automation engineer, not an electrical, but I have some knowledge about electricity (I hope). I am designing a power supply with input voltage of 3,1V and the output voltage of 175V ...
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48 views

Can I improve the high-frequencies absorption of a ferrite inductor with two opposite winding directions?

A choke if effective against common mode currents by having two windings in opposite direction around the same core. Currents common to both wires produce opposing magnetic fields and get cancelled. ...
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156 views

ferrite core replacements with passives

I am using a ferrite core to remove video noise in an NTSC video system. I am using the ferrite core on the video and video GND lines. I am merely winding the video and video GND lines on the ferrite ...
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325 views

Ferrite core characterization

I need to make a dc dc converter and have some ferrite toroids but I don't have the datasheet of the cores so I need to know how much energy are capable do store the core and what current can they ...