AliExpress Ferrite toroid information and Shops |
| Informatie over enkele ALI ontstoor ringkernen, meestal groen. Vele Philips e.a. ook erbij ter vergelijk. De L in de tabel hieronder is gemeten met de Mastech LCR meter met N = 10. AL is dan 10x de gemeten uH waarde. AL is in nH/winding of mH/1000 windingen Met DL5SWB software is daaruit de materiaal ui waarde berekend. Na de ontdekking van de rekenkundige truc met N = 10 en een RCL meter om een direct aanwijsbare ferriet AL meter te verkrijgen, is dit gemeld aan de redactie van Elektor die er direct een artikel aan besteed heeft. De lage meet frequentie bij zo'n RCL-meter - 1 kHz, 10 kHz en soms voor lage AL ook 100 kHz - is ideaal om te meten in het "rechte" aanvangs deel van de ui karakteristiek. Het is absoluut FOUT om ferriet kernen te meten met een HF oscillator of aan een dipper te hangen om de AL waarde te bepalen, zoals anderen deden!!! (in CQ-PA) In dit artikel kun je het Eureka-moment van PE1ABR in Elektor nalezen, voor meer achtergrond info over een direct aanwijzende AL meter. Ook beschikbaar in PDF in de internationale Elektor versies!! UK, Frankrijk, Duitsland. ==================== Information about some ALI interference suppression toroids, usually green. Lots of Philips et al. for comparison. Dutch decimal is used. The L in the table below is measured with the Mastech LCR meter with N = 10. AL = 10x measured uH value. AL is in nH/turn or mH/1000 turns The material ui value was calculated from this using DL5SWB software. After discovering the arithmetic trick using N = 10 and an RCL meter to obtain a directly identifiable ferrite AL meter, this was reported to the editors of Elektor, who immediately wrote an article about it. The low measuring frequency of such an RCL meter - 1 kHz, 10 kHz and sometimes for low AL also 100 kHz - is ideal for measuring in the "straight" initial part of the ui characteristic. It is absolutely WRONG to measure ferrite cores with an HF oscillator or on a dipper, as others did!!! In this Dutch article you can read the Eureka moment of PE1ABR in Elektor for more background information about a direct indicating AL meter. PDF also available in the international Elektor versions!! UK version, French, and in German. |
| maat / dimensions
in mm Shop link |
AL @ 1 kHz Q |
AL @ 10 kHz Q |
AL @ 100 kHz Q |
average / gemiddelde ui na de top / after peak inzakkende Q ==> uii gaat omhoog collapsing Q ==> uii goes up |
| 80x51x20,5 Shop link expensive! |
3395 29 |
3387 125 |
3407 71 |
1882 @ AL=3390 |
| 64x37x26 Shop link expensive! |
12310 13,8 |
12256 92,3 |
12793 14,6 |
+/- 4400 (@ AL=12250) |
| 51x30x20,5 Shop link expensive! |
3769 34 |
3771 136 |
3768 93 |
+/- 1785 |
| 36x23x15 3C11 Philips-Ferroxcube |
6195 60 |
6189 115 |
6311 34 |
+/- 4820 (@ 10 kHz) |
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36x23x15,5 ali clone 3C11 Shop link |
5542 52 |
5544 119 |
5560 43 |
+/- 4181 |
| ali clone 3C11 Huge second order same shop as above |
5898 68 |
5881 110 |
5983 28,4 |
+/- 4444 |
| 10x6x5,5 Shop 2017 tool store sold out |
1981 30 |
1994 38,6 |
1989 20,6 |
+/- 4100 usable as a 3C11 clone Q ok ! |
| 22,5x13,5x8,5 Shop link |
2947 42 |
2970 70 |
2969 33 |
+/- 3672 |
| 25x14,5x14 Shop link |
14560 39 |
14392 21 |
13050 2,88 |
+/- 9700 (@ AL=14000) lossy |
| 25x14,5x14 second order |
14518 28,9 |
14268 14,6 |
11303 2 |
+/- 9700 (@ AL=14000) lossy |
| 18x10x7,5 Shop link |
23350 4,41 |
18038 3,4 |
6705 0,9 |
+/- 22142 very lossy |
| 10x5,5x5 Shop link |
12670 2,78 |
9960 2,57 |
4896 1,5 |
+/- 19222 (@ AL=10000) very lossy |
| 8,5x3,5x3 Shop link |
10670 2,8 |
9234 2,35 |
4478 1,65 |
+/- 22100 (@ AL=10000) very lossy |
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| 38x18,8x12,7 type F NO coating Magnetics 43813-TC Shop Quackelstein 2017 Ferrite Catalog |
5382 50 |
5376 107 |
5412 34 |
3008 (@ 10 kHz) |
| 22,6x13,3x12,8 type F Magnetics ZF-42212-TC grey Shop Rosmalen 2022 Ferrite Catalog |
3502 45 |
3494 135 |
3495 84 |
2749 (@ 10 kHz) |
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| 25,5x15x21 new Conrad dual core 534480 Shop link wrong image |
10695 56 |
10636 69 |
10605 25 |
5018 (@ 10 kHz) nieuwe vormgeving / new model |
| 26x13,5x20 Conrad single core 534480 with plastic jacket Shop link old version |
11850 42 |
11750 22,5 |
10411 3,15 |
4482 (@ 10 kHz) old model |
| Lots of Philips/Ferroxcube toroids Catalog for ALL Ferroxcube materials |
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PSG Product selection guide for ALL Ferroxcube materials, one page is missing!
missing page from previous PSG |
| TN 25x15x10 3E5 yellow-white Philips-Ferroxcube |
8857 51 |
8824 51 |
8925 7,5 |
+/- 8190 |
| 36x22,5x15 3E25 orange Philips-Ferroxcube Shop link |
7557 66 |
7549 100 |
7748 19,4 |
+/- 5599 |
| 36x23x15
3C11 Philips-Ferroxcube |
6195 60 |
6189 115 |
6311 34 |
+/- 4820 (@ 10 kHz) copy from above |
| 36,5x22x15,5 3E1 groen/green Philips-Ferroxcube |
3386 38 |
3382 120 |
3388 48 |
+/- 2246 (@ AL=3380) |
| 36x23x15 sold as 3S1, but is 3S4 ! Philips-Ferroxcube NO coating |
2516 42 |
2507 54 |
2465 24 |
+/- 1860 This value complies to 3S4, and NOT 3S1 |
| 33x19x13 3F3 blue Philips-Ferroxcube Shop link |
1902 24 |
1904 130 |
1895 135 |
+/- 1387 compatible with FTxx-77 |
| 24x13,3x7,7 = TN23/14/7 4A11 pink Philips-Ferroxcube |
504 29 |
498 67 |
492 71 |
+/- 648 factory ui = 700, AL=485 compatible with FTxx-43 |
| 28,7x19x7,5 = TN29/19/7,5 4S2 uncoated Philips-Ferroxcube |
406 15,8 |
401 45 |
393 38 |
+/- 648 factory ui = 850, AL=? |
| 36x22,5x15,5 4C65 violet Philips-Ferroxcube Shop link |
161 2,04 |
158,7 17,7 |
158 84 |
+/- 113 compatible with FTxx-61 |
| 28x16x13 4C6 clone TDK HF40 - T28x13x16 from Brigatti shop |
189 2,5 |
188 23 |
188 100 |
+/- 129 compatible with FTxx-61 |
| High loss (damping) metal powder cores for DC PSU |
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| 33x20x11 (+/- T130) Magnetics 55548-A2 grey PSU inductor 2020 powder core Catalog |
127 1,8 |
128 17,5 |
127 31 |
+/- 121 NO ferrite ==> metal powder 79% Ni, 17% Fe, 4% Mo |
| 27x14,5x11,5 Micrometals T106-52 pale green-blue PSU inductor 2007 powder core Catalog |
91 1,5 |
92 13,5 |
91 32 |
+/- 67 factory ui = 75, AL=95 NO ferrite ==> metal powder |
| Very low loss RF iron (Amidon) powder cores Micrometals Txx-2 RF toroids Catalog or 2007 link above |
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And for ALL Fair-Rite (Amidon) FTxx-y ferrite toroids here the backup manual |
| 20,5x12,5x6,5 T80-2 |
7 0,17 |
6,8 1,6 |
6,8 14 |
11,5 factory ui=10, AL = 5,5 |
| 24,5x14x8,4 T94-2 |
11 0,22 |
11 2,2 |
11 18 |
12,3 factory ui=10, AL = 8,4 |
| 33,5x19,5x11,5 T130-2 |
12 0,19 |
12 1,9 |
12 19 |
10,1 factory ui=10, AL = 11 |
| 40,5x24x15 T157-2 |
15 0,19 |
15 1,8 |
15 18 |
9,9 factory ui=10, AL = 14 |
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