Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

ferrite core turns questions

Status
Not open for further replies.

Salvador12

Full Member level 4
Joined
Jul 16, 2014
Messages
201
Helped
3
Reputation
6
Reaction score
7
Trophy points
1,298
Activity points
3,862
Hi folks, so I am making this smps based on SG3525 driving an IR2110 which then is driving two half bridge mosfets.
now i made the smps to have two separate units, one meant to drive each channel of an amplifier.
for the first smps unit i got an older 3c85 ferrite core which i wound as the circuit of the smps advised with 12 turns pirmary (even though the cirucit also showed to use an etd59 core) , now for the second I have at hand a misterious ferrite core that i once bought in a local radio shop it has the code on it which reads F1 67 and that's it , when i google that i get no results.

my question is can I just use it, maybe wound some few more turns on it just in case because i think it has a lower permeability than the higher end cores which cost more and so on.

also is it true that everything else being the same a core with a lower permeability would need more turns to have the same extent of magnetization of the core in each half cycle of AC passing through the windings?


P.S. just in case I will attach the schematic if that helps determining whether i can use this core or not.
 

Attachments

  • 50khz-4n25-sg3525-smps-ir2110-smps-900w-70v-power-supply.png
    50khz-4n25-sg3525-smps-ir2110-smps-900w-70v-power-supply.png
    42.8 KB · Views: 68

My guess 67 = Epcos N67 ferrite, 25 to 300khz. It has a little more core loss than 3C85.

3C85 ferrite = Feroxcube 25 to 200KHZ.

ETD59 core is a shape not a ferrite.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top