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MICHEZO
TEKNOLOJIA
VAZI
Carbon Resistance Element: Lampblack in Alkyd and Chinese Wood Oil on Laminated Phenolic
A carbon resistance film for radio sets. Chicago Telephone Supply's Cooper (US 2,120,930, 1938) found that lampblack bound in phenolic resin kept drifting, so he bound it in alkyd resin modified with Chinese wood oil (tung oil). Sprayed on laminated phenolic and baked up to 165 °C, the film becomes insoluble and holds its value in heat and damp. His mix gave about 50,000 ohms in an element of ordinary size, with a film about 0.003 inch thick.
The picture: our diagram.
Kati
1 day
Maagizo
1
1
Make the binder: 72 alkyd, 28 wood oil
Make the binder: 72 alkyd, 28 wood oil
Mix 72 parts of alkyd resin with 28 parts of Chinese wood oil (tung oil).
Vifaa kwa hatua hii:
Resini ya alkidi Glyptal72 parts
Mafuta ya tungi28 partsZana zinazohitajika:
Mizani ya mizani-mbili
Bikari ya kioo
Kikorogo
Glavu za mpira2
2
Mix 25 binder, 14 lampblack, 61 solvent
Mix 25 binder, 14 lampblack, 61 solvent
Thoroughly mix 25 parts of the binder with 14 parts of lampblack and 61 parts of a solvent for the binder. The patent does not name the solvent. Ours: xylene.
Vifaa kwa hatua hii:
Masizi ya taa14 partsZana zinazohitajika:
ZailiniMizani ya mizani-mbiliBikari ya kiooKikorogo
Barakoa ya uso mzima ya kupumuaGlavu za mpira3
3
Spray onto laminated phenolic
Spray onto laminated phenolic
Spray the mixture as a thin film onto a base of laminated phenolic. The patent's film is about 0.003 inch thick.
Vifaa kwa hatua hii:
Karatasi ngumu ya mchanganyiko wa resini ya fenoli1 kipandeZana zinazohitajika:
Bunduki ya Kunyunyizia
Kibana hewaBarakoa ya uso mzima ya kupumuaGlavu za mpira4
4
Bake: 40 °C up to 165 °C, hold 1 hour
Bake: 40 °C up to 165 °C, hold 1 hour
Put it in an oven at about 40 °C, raise the heat gradually over one hour to 165 °C and hold there one more hour. Take it out and let it cool; it is ready for use.
Zana zinazohitajika:
Tanuri la kukaushia
Kipimajoto cha Oveni
Glavu Zinazostahimili JotoVifaa
4- 72 partsKishikilia Nafasi
- 28 partsKishikilia Nafasi
- 14 partsKishikilia Nafasi
- Kishikilia Nafasi
Zana Zinazohitajika
11- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- 1 vendor sell this, none ship to you yetKishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Mchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
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CC0 Umma Wote
Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.
Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.