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Multi-Conductor Cable: Cotton-Covered, Waxed and Twisted
A cable of several insulated wires in one bundle, such as the four leads of a strain-gauge bridge. Each copper wire is wrapped in cotton thread and soaked in beeswax, then the wires are twisted together and covered again.
Baguhan
An afternoon
Mga Tagubilin
1
1
Cut the conductors
Cut the conductors
Cut one copper wire per conductor (four for a bridge), a little longer than the cable.
Mga materyales para sa hakbang na ito:
Kawad na Tanso4 lengthMga kailangang kasangkapan:
Pambalat ng kawad2
2
Wrap each wire in cotton
Wrap each wire in cotton
Clamp one end in the vise and the other in the hand drill's chuck, keeping it taut. Wind cotton thread on in a close spiral with no gaps, then a second layer the opposite way.
Mga materyales para sa hakbang na ito:
Sinulid na Bulak1 as requiredMga kailangang kasangkapan:
Bais sa Mesang Panggawa
Barenang de-kamay
Gunting3
3
Soak in beeswax
Soak in beeswax
Melt beeswax in a double boiler and draw each covered wire slowly through it. Wipe off the excess and let it set.
Mga materyales para sa hakbang na ito:
Pagkit ng Bubuyog1 as requiredMga kailangang kasangkapan:
Dobleng kaldero
Pang-init na Plato4
4
Twist them together
Twist them together
Lay the covered wires side by side, clamp one end and twist them together evenly with the drill.
Mga kailangang kasangkapan:
Bais sa Mesang PanggawaBarenang de-kamay5
5
Cover the bundle
Cover the bundle
Wind an outer layer of cotton over the twisted bundle and wax it again.
Mga materyales para sa hakbang na ito:
Sinulid na Bulak1 as requiredPagkit ng Bubuyog1 as requiredMga kailangang kasangkapan:
Bais sa Mesang PanggawaDobleng kalderoPang-init na Plato6
6
Test it
Test it
Strip the ends. With a multimeter check each wire end to end, and check that no two wires touch.
Mga kailangang kasangkapan:
Pambalat ng kawad
Multimetro7
7
Limits
Limits
Cotton insulation is only good for low temperatures, up to about 105 °C (Wikipedia, Magnet wire), and for dry places and low voltages such as instrument leads. The method is general workshop practice, ours.
Mga Materyales
3- 4 lengthPlaceholder
- 2 as requiredPlaceholder
- 2 as requiredPlaceholder
Ang blueprint na ito ay gumagawa ng
CC0 Pampublikong Domain
Ang blueprint na ito ay inilabas sa ilalim ng CC0. Malaya kang kumopya, magbago, mamahagi, at gumamit nang walang pahintulot.
Suportahan ang Maker sa pamamagitan ng pagbili ng mga produkto sa kanilang Blueprint Komisyon ng Maker itinakda ng mga Vendor, o lumikha ng bagong bersyon ng Blueprint na ito at isama bilang koneksyon sa iyong Blueprint upang ibahagi ang kita.