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1. [TowerTalk] Ferrite material Laird 28 (score: 1): Author: "Bert Almemo" <balmemo@sympatico.ca>; Date: Sun, 26 Mar 2017 18:00:11 -0400; Hi guys, Does anyone have any experience with ferrite material #28 from Laird? A friend of mine tells me it's similar to material #43. Comments appreciated. 73 Bert, VE3NR ___________________________; /archives//html/Towertalk/2017-03/msg00375.html (6,586 bytes)
2. Re: [TowerTalk] Ferrite material Laird 28 (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Mon, 27 Mar 2017 04:46:26 -0700; It all depends on what application you are using it in, what frequency, what power level, etc. I have measured various competitor's "equivalents" to material 43 and the found that they are considerab; /archives//html/Towertalk/2017-03/msg00380.html (8,014 bytes)
3. Re: [TowerTalk] Ferrite material Laird 28 (score: 1): Author: "Bert Almemo" <balmemo@sympatico.ca>; Date: Mon, 27 Mar 2017 13:12:10 -0400; Hi Rick, Thanks for your comments. I'm was planning to use the ferrite toroids to make common-mode chokes for HF. I found 2.4"x1.4"x .5" toroids on Digikey, Laird #28 for around USD 4.00 in quantitie; /archives//html/Towertalk/2017-03/msg00387.html (8,797 bytes)
4. Re: [TowerTalk] Ferrite material Laird 28 (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Mon, 27 Mar 2017 12:07:25 -0700; For common mode chokes, lossier is better. But so is the shape of the curve of loss vs. frequency, and so is resonant frequency. You either need to wind chokes and measure them or have graphs of mu'; /archives//html/Towertalk/2017-03/msg00389.html (8,674 bytes)
5. Re: [TowerTalk] Ferrite material Laird 28 (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Mon, 27 Mar 2017 14:12:56 -0700; What I meant by loosier is that in a common mode choke, there would be more heat dissipation loss with the Laird. I did NOT mean that the series resistance was higher. I agree Fair-Rite's web site is; /archives//html/Towertalk/2017-03/msg00392.html (9,464 bytes)
6. Re: [TowerTalk] Ferrite material Laird 28 (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Mon, 27 Mar 2017 16:36:47 -0700; On Mon,3/27/2017 2:12 PM, Richard (Rick) Karlquist wrote: What I meant by loosier is that in a common mode choke, there would be more heat dissipation loss with the Laird. I did NOT mean that the ser; /archives//html/Towertalk/2017-03/msg00396.html (10,485 bytes)
7. Re: [TowerTalk] Ferrite material Laird 28 (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Mon, 27 Mar 2017 18:25:19 -0700; On 3/27/2017 4:36 PM, Jim Brown wrote: On Mon,3/27/2017 2:12 PM, Richard (Rick) Karlquist wrote: What I meant by lossier is that in a common mode choke, there would be more heat dissipation loss with; /archives//html/Towertalk/2017-03/msg00397.html (9,675 bytes)

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