1000 Threads found on edaboard.com: Ferrite Core
Actually I am trying to design a Induction Heat machine. I need information about the calculation of section of ferrite core to manage the necesary power. The machine will work to 50khz or up. Thanks brothers.
Professional Hardware and Electronics Design :: 06-04-2003 18:42 :: joebazoka :: Replies: 4 :: Views: 2206
Ferrycube (fore philips)have many good high frequecy ferrite products.
RF, Microwave, Antennas and Optics :: 04-11-2004 22:05 :: pewang :: Replies: 5 :: Views: 1500
some matterial like ferrite that settele on magnetizing enviroment will degraded over time but with low degaraded only making it,s characteristics diffrent as it for firs time (it's olso depent on material of te ferryte)
Electronic Elementary Questions :: 02-27-2005 09:38 :: e_eja :: Replies: 4 :: Views: 886
At moment I finish a small project with one +24VDC DC motor. Because of the noise level, my microcontroller was reset many times, then I add a single PI filter for supress noise interferences.
This filter function very nice, but now I start my serial production and need define the core characteristics and the windings.
Hobby Circuits and Small Projects Problems :: 03-11-2005 21:26 :: gorkin :: Replies: 5 :: Views: 1165
I am working on the power line communication project.
I have implemented FSK modulation and demodulation using XR2206 and XR2211 respectively.
I am getting 30khz and 15KHz, 5Vpp output for logic 1 and logic 0 respectively.
I have also implemented the coupling circuit using ferrite core from the power supply and couple it
using .47uF -
Analog Circuit Design :: 04-03-2005 13:19 :: ss :: Replies: 0 :: Views: 979
On your density, you are up against the laws of physics. The magnetic properties are caused by metals. ferrite is a mixture of the metals and ceramic materials on a molecular basis. If you use the hollow tube, the equivalent mu goes down. (This lower value of mu may work properly in your circuit.)
Another form of material is metal particles i
Analog Circuit Design :: 08-01-2005 17:36 :: flatulent :: Replies: 4 :: Views: 1352
Yes, you may possibly find an old AM pocket radio receiver in the house you or the neighbours do not need any more. From such radio set you can take out either the AM ferrite road or the 455kHz IF coils and use their ferrite as the core for your RF choke. These cores usually work up to 1-2MHz frequency and will give (...)
RF, Microwave, Antennas and Optics :: 05-06-2006 08:49 :: unkarc :: Replies: 2 :: Views: 1272
I need to choose a ferrite core (balun core) for a 20-90 MHz dipole antenna ,
5W , 50Ω.
Wich ?r do i need ?
What other parameters are necessary?
RF, Microwave, Antennas and Optics :: 02-14-2007 04:57 :: bbvv :: Replies: 0 :: Views: 614
i am developing the dc current meter , in that a hall sensor UNG 3505 is used but , sensor should place in the air gap of ferrite core .
i found it in the old smps but of ring shape , for a gap i have to cut it ! and ferrite >> is too hard to cut . any special method for cutting .?
can i use a similar core but (...)
Microcontrollers :: 01-25-2008 11:29 :: manish12 :: Replies: 7 :: Views: 4880
I want to make transformer using ETD 59 ferrite core (frequency 20KHz). The equation is attached for calculations. I have question that how to determine the (Ac=core area in cm2) for ETD 59 ferrite cores.
Professional Hardware and Electronics Design :: 02-18-2008 04:15 :: xyz9915 :: Replies: 2 :: Views: 3843
The classic old book "Soft ferrites - Properties and Applications" by E. C. Snelling gives a lot of equations and theory about inductor and transformer winding design, in particular the very important proximity effect. I'm not sure if your newbie status will let you see this forum:
That book takes
Miscellaneous Engineering :: 03-22-2008 04:55 :: echo47 :: Replies: 5 :: Views: 2507
I made a parallel-plate 90° - 3dB Hybrid coupler in PCB. May be You can make the same but with these lines in turns into a ferrite core and the lines separated with a flexible dielectric.
RF, Microwave, Antennas and Optics :: 06-04-2008 09:25 :: byteptr :: Replies: 7 :: Views: 2631
the powdered iron toroidal core will work fine, it won't saturate, but will have higher loss than a properly gapped ferrite core.
Analog Circuit Design :: 11-09-2008 01:12 :: Johansen :: Replies: 3 :: Views: 1862
Do ferrite core increse the power transmission efficiency?I want to use ferrite core in passive RFID tag and antenna,It seems that using ferrite core or ferrite rod can increse energy transmission efficency between RFID antenna and tag in a near fild?
Anyone can give (...)
RF, Microwave, Antennas and Optics :: 06-16-2009 07:46 :: hadzzgl :: Replies: 2 :: Views: 843
i tried a ckt to make light weight ferrite core base hf 50 hz invertor.first i converted 12 v dc to 350 v dc with a center tapped ferrite smps transformer with push pull tolology and hf switching.after that i converted this 350 v dc to a square wave 50 hz op with H bridge.But even after using currentt limit circuit to the outputs the (...)
Analog Circuit Design :: 08-20-2009 13:11 :: anan1975 :: Replies: 1 :: Views: 1809
It is to raise the inductance so that fewer turns can be used. Since ferrite has high resistance, it does not add to the parasitic capacitance.
Electronic Elementary Questions :: 11-19-2009 18:11 :: flatulent :: Replies: 3 :: Views: 1880
How to select ferrite core for switching power supply transformer design?
Electronic Elementary Questions :: 03-31-2010 02:56 :: Libin :: Replies: 0 :: Views: 977
i want to design ferrite core transformer.
Anyboddy can help me in design pls tell me wats the formula here to find area, primary winding and secondary winding.. voltage and current....
Power Electronics :: 05-19-2010 06:01 :: Zeshee :: Replies: 1 :: Views: 1565
designing a switch mode power supply which can be described by the block diagram above. The pulse generator circuit consists of a 555. Output of 555 is directly connected to the gate of the MOSFET (6N60). A 100Ω resistor is connected to the secondary windings of the ferri
Electronic Elementary Questions :: 07-13-2010 13:13 :: hkBattousai :: Replies: 6 :: Views: 2265
I consider making a 200 MHz transformer with a ferrite core. Tan(δ) = 1 at 200 MHz, but calculated power loss is very small. Should I believe that I can use this ferrite?
RF, Microwave, Antennas and Optics :: 08-03-2010 15:01 :: htg :: Replies: 1 :: Views: 1582
I have a formula for radiation resistance of a small loop antenna. How will the radiation resistance of a resonant loop antenna change if I place a ferrite core in it? (I am talking about an actual loop = 1 turn, so the core would be a ferrite slice - there is also the question about the influence if the thickness of this (...)
Mathematics and Physics :: 09-06-2010 14:58 :: htg :: Replies: 0 :: Views: 932
I am designing an offline, isolated flyback at 22W with Vout = 36V, Vin=85-265VAC.
I will be using a EFD25/13/9 ferrite core transformer from Epcos(the AL = 315 one, N87)
Power Electronics :: 09-13-2010 09:20 :: eem2am :: Replies: 2 :: Views: 1364
i wana know whats the difference in application of a five pin and four pin input ferrite core transformer? (in four pin two are for primary and two for feedback but what about the fifth pin ?). i am using a four pin ferrite core for an inverter but it out put is less.
how it differ from each other in design and (...)
Analog Circuit Design :: 10-31-2010 06:51 :: ziad khan :: Replies: 2 :: Views: 1025
Today i found the web page i was looking i found that the difference in winding turns counting is for toroids and chokes.The ferrite core transformer winding turns are counted same way as in iron core transformers.I am much thankful for you help.
For reference the link to page is
Power Electronics :: 03-20-2013 05:24 :: lordgty :: Replies: 7 :: Views: 2674
If you live in low temperatures area the ferrite core (known as inverters) are best (in my opinion and experience) and if you live in high temperature area I may suggest to go for Iron core Transformer. Quality means much in every product type.
Electronic Elementary Questions :: 10-28-2011 11:24 :: Raza :: Replies: 3 :: Views: 2714
No. first line starts from 080-49913-00 second line SB14.2 and third line CLICK is a two poles ferrite core transformer,can anyone explain its specification.thanks
Electronic Elementary Questions :: 11-23-2011 04:40 :: ch wazir :: Replies: 3 :: Views: 554
I have heard that ferrites are used in transformers and other applications. And that they are used for concentrating flux. Is this right? What property helps them do this? What is the relation between that property and the magnetic flux? Can you kindly provide me the answer and if possible a document which can explain in easy terms, w
Electromagnetic Design and Simulation :: 06-14-2012 03:03 :: bharadwaj.cv :: Replies: 1 :: Views: 404
You advise how to calculate how much magnetic flux density in the ferrite core size T37 causes the current through the conductor at its center the size of 1A?
What ferrite material be selected for the magnetic flux induced by current 1mA-10A ?
Electromagnetic Design and Simulation :: 11-28-2012 10:24 :: Astrid :: Replies: 1 :: Views: 319
I need to know some SMPS tx ferrite core model from Farnell UK/ Rs Online UK. I wanna use them for building 200W-700W DC power supply and 500W-4000W sine wave inverter. pls suggest me appropriate part no...
Power Electronics :: 03-16-2013 06:22 :: MAXPAYNE :: Replies: 1 :: Views: 408
For oscillator design in electronic ballast I bought a 10/6/4 toroid ferrite core i want the Hsaturation value to find the number of turns i should wind. i am using a hinoday ferrite of msb-5s material grade. some one please help me to find the Hs.
The bsat is 480mT. ui = 3000
I tried with u=b/H and got some 1.27 but i dont know (...)
Electronic Elementary Questions :: 03-25-2013 11:37 :: phobos1 :: Replies: 0 :: Views: 450
hi everyone how are you people.. i want to ask , i have this ferrite core. with material PC40 and size EE55 how can i know about its Bmax to use in calculating its turns as shown in Tahmid blog. and also its area A..
core is this type as shown in the blow link.
Power Electronics :: 05-21-2013 09:10 :: aliraza786 :: Replies: 0 :: Views: 633
I recently received a ferrite core with following specifications :
ETD44 , 3c90 (material)
Now I want to know how much power can I transfer using this core.
On doing a bit of googling I found this which provides a beautiful table to list the power at 100khz. But what if I want to use it at
Electronic Elementary Questions :: 06-17-2013 05:32 :: shatruddha :: Replies: 1 :: Views: 717
I want to design a transformer but there is a little bit confusion.I want to know the selection of core used in the transformer.I only heard two option one is ferrite core and other is iron core. There is a confusion as I don't have any idea about how to select the core. Which one is better (...)
Analog Circuit Design :: 08-02-2013 07:01 :: shaswat :: Replies: 2 :: Views: 493
hi someone refer me any ferrite core and ferrite transformer seller in bangalore...... in sp road if possible
Hobby Circuits and Small Projects Problems :: 12-15-2013 08:35 :: phobos1 :: Replies: 3 :: Views: 546
Here in MaryLand we have to make a 9uH inductor which will be used in a 650W, 200KHz, CCM boost converter.
The inductor current is triangle between 47 Amps and 42Amps, with around 45 Amps RMS current.
We only have the PQ40/40 ferrite core set so far, but is there any smaller type of ferrite formers which are used for inductors (...)
Power Electronics :: 03-01-2014 12:45 :: treez :: Replies: 1 :: Views: 338
I am building a Pure sinewave Inverter.Now, when I connect my dc-dc converter to the drains of my full bridge inverter (SPWM section) my ferrite core tranformer begins to make a sound and then after a little while I see smoke coming from it. What could be the problem? I was wondering if it could be the LC filter at the output of the
Power Electronics :: 04-07-2014 03:51 :: Kryptone :: Replies: 1 :: Views: 306
I'm designing a miniature 100mH inductor, the external diameter of the inductor is limited to 3.6mm, the length could be 20-30mm, resistance should be less than 240 Ohm. The operating frequency is between 10..30 KHz. The coil should have closed magnetic field lines to avoid interaction with external objects / fields.
At the moment I can'
Electromagnetic Design and Simulation :: 04-16-2014 02:49 :: luben111 :: Replies: 0 :: Views: 190
Basically, I want to build a two stage buck converter as a charger for a (solar) battery string.
I want to build those two inductors using some torroidal iron powder cores. I still didn't finish the calculations so I wonder if there's any problem if I'll buy some larger torroidal cores as theoretical
Power Electronics :: 04-28-2014 06:15 :: red_alert :: Replies: 4 :: Views: 241
I need help on ferrite core transformer design.
I want to use TDK PC40-EE55/55/21 core. So please any body help me to calculate
number of turns against 20Khz full H-Bridge drive.
Power Electronics :: 08-04-2014 08:20 :: asgharprince :: Replies: 1 :: Views: 248
What is the right way to define the main parameters (Bm, Al, Mi..) of a smsp ferrite so that we can choose its replacement?
Professional Hardware and Electronics Design :: 06-10-2005 16:26 :: nec3 :: Replies: 4 :: Views: 2850
I'm trying to simulate a ferrite binocular core in the VHf band (20 - 500 MHz) by AWR, I saw in the polyfet AN TB160 ( )
that the ferrite core is modelled by a coaxial wire with an inductor in parallel,
could anyone give me the meaning ??
Electromagnetic Design and Simulation :: 05-05-2009 09:53 :: Andrew77 :: Replies: 2 :: Views: 2005
My 400W PC power supply uses an ERL35.And I guess, it's not running faster than 30, maximum 50 kHz. So at 100 kHz you can achieve even higher power.
You can also refer to the Epcos ferrite design tool, that gives about 400 W for EER35 with a 25 kHz push-pull topology.
Power Electronics :: 11-23-2010 09:15 :: FvM :: Replies: 16 :: Views: 14796
Hello,MIANYANG MAIKE MAGNETIC CO., L
specializes in producing and selling magnetic components, including:
1.ferrite cores 2.inductors;3.transformers
Our factory is located in Sichuan Province of China. Our products are all made to satisfy the requirements of the European Union RoHS, and have ISO 90001 certification. (...)
Business, Promotions, Advertising :: 02-22-2010 04:16 :: xu.hob :: Replies: 0 :: Views: 1065
I am making a circuit for overcurrent protection where the circuit is shut off using a relay if current is greater than 10A. For current sensing, I chose to use a current transformer.
My question is that, if I'm measuring the current flowing through at 220VAC 50Hz, can I use a ferrite toroid? I was thinking of 1 turn and 100 turns. Will this work?
Power Electronics :: 01-20-2012 14:01 :: Flavini :: Replies: 12 :: Views: 1294
I am just curious to know what will happen if I use a ferrite core transformer
I have read it many times that ferrite core transformer is used for high frequency operation.
Power Electronics :: 07-27-2012 02:35 :: manishanand14 :: Replies: 5 :: Views: 1831
i need to make a Boost PFC inductor.
I(RMS) = 5A2
I(PK) = 9A7
Switching frequency = 60KHz.
Do you know of any good families of ferrite cores that i can use to wind this?
A the moment i am intending to use the ETD 54 core with 2mm gap as follows....
I intend to use 3
Power Electronics :: 09-23-2012 04:18 :: treez :: Replies: 0 :: Views: 405
Hi.. two ferrites with same composition (e.g. T50-2 & T68-2) and same no. of turns.. but have different diameter as 0.5inch & 0.68inch.. what effect will be caused by this change?? can this change be compensated by increasing or decreasing no. of turns???
Professional Hardware and Electronics Design :: 09-25-2012 01:32 :: Ow@i$ :: Replies: 5 :: Views: 461
I want to make a toroid current transformer with a large aperture so that it can fit around the arm or ankle.
The current transformer is meant to measure the induced current in the body ( arm or ankle ) caused by electromagnetic fields.
I found some ferrite toroid cores on with a large enough aperture ( see image ). The questi
Professional Hardware and Electronics Design :: 10-24-2012 15:45 :: philipperr :: Replies: 8 :: Views: 1869
I would like input chokes for switching power supply 200W transformer wound on a ferrite core.
I have 2 sector core E2005 with ferrite CF138 Al=1350 nH (ungaped core).
It is good idea for make 2x10uH EMI suppressor?
Analog Circuit Design :: 01-08-2013 07:11 :: asrock70 :: Replies: 2 :: Views: 368
Hello, A nice measurement is the low frequency BH curve. The basic setup is relatively simple, but you need some math to convert the measured properties back towards magnetic field properties.
You can find an example measurement setup at:
If your Digital Oscilloscope has int
Electromagnetic Design and Simulation :: 12-16-2013 08:03 :: WimRFP :: Replies: 5 :: Views: 573