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UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Ferrite Toroid Core: Copper-Zinc Ferrite Sintered at 1250 °C (Snoek 1948, Ex. I)
A soft ferrite ring core for coils and transformers: copper, zinc and iron oxides with a little brownstone, pressed into a ring and sintered at 1250 °C in oxygen. Snoek's ring had an initial permeability of 295.
Source: J. L. Snoek, US 2,452,530 (Philips, 1948), Example I and its table. The violet iron oxide has its own blueprint (precipitated hematite calcined at 1000-1100 °C, after Nurdini et al. 2022); Snoek does not say how his was made. Picture: the patent's Fig. 4, the ring core.
Hejuru
2 days
Amabwiriza
1
1
Weigh 20 : 30 : 50 mol % and 1 % brownstone
Weigh 20 : 30 : 50 mol % and 1 % brownstone
Mix 20 mol % pure copper oxide, 30 mol % pure zinc oxide and 50 mol % pure violet iron oxide, and add 1 % by weight of brownstone (manganese dioxide). Ours, by weight: 13.24 g copper oxide, 20.32 g zinc oxide and 66.44 g iron oxide per 100 g, plus 1 g brownstone. Snoek does not say what makes it 'violet'; violet iron oxide has its own blueprint.
Ibikoresho by'iyi ntambwe:
Okiside y'umuringa13.24 g
Ifu ya oxide ya zinki20.32 g
Okiside y’icyuma y’ibara ry’isine66.44 g
Diyokiside ya manganize (pirolusite)1 gIbikoresho bikenewe:
Umunzani w'ibiro
Agapfukamunwa k'Umukungugu2
2
Grind half an hour in an iron ball mill
Grind half an hour in an iron ball mill
Grind the mixture for half an hour in a mill with iron balls.
Ibikoresho bikenewe:
Urusyo rw'imipira y'icyumaAgapfukamunwa k'Umukungugu3
3
Press a ring at 4 tons per cm²
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.
Ibikoresho bikenewe:
Imashini ikanda ikoresha amazi
Ibumbano ryo gukanda impetaAgapfukamunwa k'Umukungugu4
4
Sinter at 1250 °C in oxygen, cool 5–10 °C a minute
Sinter at 1250 °C in oxygen, cool 5–10 °C a minute
Sinter the ring at 1250 °C in a current of oxygen. Example I heats for 1 hour and cools in the oxygen at 5 to 10 °C per minute. Snoek's ring had an initial permeability of 295, measured at room temperature at 2 kHz.
Ibikoresho bikenewe:
Itanura ry'umuyoboro
Ogisijene
Ibariro rya gazi ifite igitutu
Pirometero
Amakoro y'Icyombo Gishongesha
Uturindantoki twihanganira ubushyuheIbikoresho
4- 13.24 gUmwanya
- 20.32 gUmwanya
- Umwanya
- Umwanya
Ibikoresho bikenewe
11- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
Blueprint zijyanye
Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame
CC0 Umurenge rusange
Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.
Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.