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Ferrite Toroid Core: Magnesium-Zinc Ferrite, One-Day Grind, 1400 °C (Snoek 1948, Ex. II)
Charlie

Imeundwa na

Charlie

28. Oktoba 2026DE
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Ferrite Toroid Core: Magnesium-Zinc Ferrite, One-Day Grind, 1400 °C (Snoek 1948, Ex. II)

A soft ferrite ring core of magnesium-zinc ferrite: magnesia, zinc oxide and iron oxide ground for a whole day, pressed into a ring and fired at 1400 °C in oxygen. Snoek's ring had an initial permeability of 670 and a Curie point near 100 °C. Source: J. L. Snoek, US 2,452,530 (Philips, 1948), Example II. Unknown: the 'violet' iron oxide, linked to an unknown head. Picture: the patent's Fig. 4, the ring core.
Juu
2 days

Maagizo

1

Weigh 25.5 : 25.5 : 49 mol %

Mix 25½ mol % pure magnesia, 25½ mol % pure zinc oxide and 49 mol % pure violet iron oxide. Ours, by weight: 9.4 g magnesium oxide, 18.99 g zinc oxide and 71.61 g iron oxide per 100 g. Unknown: what makes the iron oxide 'violet'.

Vifaa kwa hatua hii:

Oksidi ya magnesiamuOksidi ya magnesiamu9.4 g
Poda ya oksidi ya zinkiPoda ya oksidi ya zinki18.99 g
Oksidi ya chuma ya zambarauOksidi ya chuma ya zambarau71.61 g

Zana zinazohitajika:

Mizani ya mizani-mbiliMizani ya mizani-mbili
Barakoa ya vumbiBarakoa ya vumbi
2

Grind for one day in an iron ball mill

Grind the mixture for one day in a mill with iron balls.

Zana zinazohitajika:

Kinu cha mipira ya chumaKinu cha mipira ya chuma
Barakoa ya vumbiBarakoa ya vumbi
3

Press a ring at 4 tons per cm²

Press the powder at 4 tons per square centimetre into a ring 3 cm across with a 4 × 4 mm cross-section.

Zana zinazohitajika:

Mashine ya kubana ya haidrolikiMashine ya kubana ya haidroliki
Kalibu ya kubonyeza peteKalibu ya kubonyeza pete
Barakoa ya vumbiBarakoa ya vumbi
4

Fire 1 hour at 1400 °C, cool slowly in oxygen

Heat the ring in oxygen for 1 hour at 1400 °C, then cool it slowly in oxygen. Snoek's ring had an initial permeability of 670 at room temperature and 2 kHz.

Zana zinazohitajika:

Tanuru ya MrijaTanuru ya Mrija
OksijeniOksijeni
Mtungi wa gesi yenye shinikizoMtungi wa gesi yenye shinikizo
Kipima joto kaliKipima joto kali
Koleo la kaure ya kuyeyushiaKoleo la kaure ya kuyeyushia
Glavu Zinazostahimili JotoGlavu Zinazostahimili Joto

Vifaa

3

Zana Zinazohitajika

11

Mchoro huu unatengeneza

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Kishikilia nafasi

Kiini cha toroidi cha feraiti

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Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

Ferrite Toroid Core: Nickel-Zinc Ferrite Sintered at 1300 °C in Oxygen (Snoek)
Hatari

Ferrite Toroid Core: Nickel-Zinc Ferrite Sintered at 1300 °C in Oxygen (Snoek)

na CharlieDE

Viwandani

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Ferrite Toroid Core: Magnesium-Zinc Ferrite Fired at 1400 °C in Oxygen (Snoek)

Ferrite Toroid Core: Magnesium-Zinc Ferrite Fired at 1400 °C in Oxygen (Snoek)

na CharlieDE

Viwandani

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