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Old 13-05-2008, 21:03   #1
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caut harduri vechi stricate sau cine doneaza

din cate stiu hardurile au in ele un magnet de tip neodym

unde as putea sa gasesc harduri vechi
nu conteaza capacitatea
imi trebuie magnetii pentru niste experimente multumesc
 
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Old 13-05-2008, 23:47   #2
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magnetii neodymium sunt permanenti si foarte puternici. daca ar avea asa ceva, ti-ar rade datele de pe hard. hardul are un electromagnet, dar foarte slab. capurile de citire sunt miscate de acel electromagnet.

la urma urmei, cine stie ce chestii mai baga unii producatori, prin harduri. eu, din cate harduri am desfacut, n-am vazut vreun magnet permanent in ele.
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Old 14-05-2008, 00:00   #3
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cum sa nu aiba magnet permenent, sunt chiar 2 , unu deasupra celuilaltuia si foaaarte puternici
 
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Old 14-05-2008, 00:05   #4
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Daca nu se ofera nimeni, ma ofer eu cu juma de gura. Inca mai am niste IBM-uri picate acu tzshpe ani, de pe care speram sa recuperez datele la Judecata de Apoi.
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Old 14-05-2008, 00:16   #5
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iti dau si eu unu
 
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Old 14-05-2008, 00:52   #6
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Quote:
Originally Posted by zeegermans View Post
magnetii neodymium sunt permanenti si foarte puternici. daca ar avea asa ceva, ti-ar rade datele de pe hard. hardul are un electromagnet, dar foarte slab. capurile de citire sunt miscate de acel electromagnet.

la urma urmei, cine stie ce chestii mai baga unii producatori, prin harduri. eu, din cate harduri am desfacut, n-am vazut vreun magnet permanent in ele.
TOATE hdd-urile pe care le-am desfacut au avut magneti...si sunt ai dracu' de puternici.

http://en.wikipedia.org/wiki/Neodym
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Old 14-05-2008, 09:05   #7
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Eu am un magnet de HDD lipit pe frigider pe linga ceilalti magneti "comerciali". Este de departe cel mai tare mai ales considerind ca nici nu face contact direct cu usa frigiderului dar chiar si cu piciorusele care-l tin la 5 mm distanta tot e super strong.
 
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Old 14-05-2008, 09:25   #8
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Am auzit eu de niste 'experimente' pe care le fac pensionarii comunisti cu magnetii de hdd. Le pun pe apometre ca sa nu mai inregistreze consumul
 
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Old 14-05-2008, 09:55   #9
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hai ca asta e tare...atunci sa pastram magnetii de la harduri ca am inteles ca din iarna vor fi obligatorii apometrele.
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Old 14-05-2008, 14:06   #10
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tare faza cu apometrele dar nu pentru asta imi trebuie
stiller si shadower ave-ti pm
am uitat sa specific pentru bucuresti
 
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Old 14-05-2008, 17:18   #11
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Sa nu spui ca vrei sa construiesti un motor in miniatura
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Old 14-05-2008, 23:15   #12
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Originally Posted by Croocodillul View Post
TOATE hdd-urile pe care le-am desfacut au avut magneti...si sunt ai dracu' de puternici.

http://en.wikipedia.org/wiki/Neodym
unde, anume, in hdd sunt magnetii? am si eu vreo 2 pe-acasa, unul desfacut, dar nu ii vad. o poza, ceva?
 
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Old 14-05-2008, 23:28   #13
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acuatorul sta intre 2 magneti.

Daca le desfaceai de tot sigur ii gaseai
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Old 15-05-2008, 00:45   #14
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eu ce-am desfacut n-aveau magneti. ce arati tu in poza erau doar bucati de fier, prinse intre 2 electromagneti. depinde acum si de model. nu zic nu.
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Old 15-05-2008, 01:23   #15
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Pe partea cealalta a pieselor de metal sunt magnetii de neodym.

"The term voice coil has been generalized and refers to any galvanometer-like mechanism that uses a solenoid to move an object back-and-forth within a magnetic field. In particular, it is commonly used to refer to the coil of wire that moves the read-write heads in a moving-head disk drive. In this application, a very lightweight coil of wires is mounted within a very strong magnetic field produced by rare earth permanent magnets. The voice coil is the motor part of the servo system that positions the heads: an electric control signal drives the voice coil and the resulting force quickly and accurately positions the heads."
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Old 15-05-2008, 01:42   #16
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l-am gasit
dar nu se dezlipeste porcul de bucata aia de metal. si daca tot l-am gasit mi-am adus aminte ca am mai avut 2 de-astia acum cativa ani (2 din acelasi hdd, acum am gasit doar 1) si se atrageau atat de tare ca unul din ei a crapat (la propriu ) cand "s-au gasit" intamplator pe birou
 
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Old 15-05-2008, 09:32   #17
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Un Pic Offtopic Pentru Lr
Da M_am Gandit La Niste Aplicatii
Bazate Pe Acest Camp Nu Chiar Perendev

Cine Mai Are Si Nu Ii Trebuie Ramane Valabil
 
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Old 15-05-2008, 10:28   #18
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Quote:
Originally Posted by ovideo View Post
l-am gasit
dar nu se dezlipeste porcul de bucata aia de metal. si daca tot l-am gasit mi-am adus aminte ca am mai avut 2 de-astia acum cativa ani (2 din acelasi hdd, acum am gasit doar 1) si se atrageau atat de tare ca unul din ei a crapat (la propriu ) cand "s-au gasit" intamplator pe birou
Intotdeauna sint doua, doar ca nu intitdeauna amindoua pot fi scoase de pe carcasa hardului. De exemplu fratele aluia de la mine de pe frigider era lipit de carcasa probabil cu aceeasi rasina lipicioasa imposibil de deslipit cu care e lipit si ala "mobil" de pe bucata lui de metal chior.
 
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