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Nardu

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Nardu last won the day on August 1

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About Nardu

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  • Birthday 08/30/1958

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    http://trainz.uv.ro/

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  1. M-a preocupat la un moment dat problema pentru routerul de acasa; sa "bata" ceva mai departe. Lucrurile simple dau intotdeauna rezultate bune: http://www.freeantennas.com/index.html https://www.google.com/search?q=wifi+cantenna&client=firefox-b&tbm=isch&tbo=u&source=univ&sa=X&ved=2ahUKEwiX75mRnafeAhUBDywKHYusCUIQsAR6BAgEEAE&biw=1372&bih=831 @Nardu
  2. TOROIDY, cele in discutie, pret cu TVA - https://www.tme.eu/ro/katalog/#id_category=100028&s_field=artykul&s_order=ASC&visible_params=522%2C444%2C2%2C424%2C317%2C2846%2C1467%2C101%2C160%2C397&used_params=444%3A57647%3B&page=1&gross_prices=1 Ei se lauda cu cele 2 de 50VA, EL34PP si EL 84PP, cu performante 0.008...54kHz! - https://www.tme.eu/ro/katalog/#id_category=100028&gross_prices=1&s_field=artykul&s_order=ASC&visible_params=444%2C2%2C424%2C522%2C317%2C2846%2C1467%2C101%2C160%2C397&used_params=397%3A381253%2C381254%3B444%3A57647%3B Trafo necesare la schema de la post #30 2x TTG-EL34SE https://www.tme.eu/ro/details/ttg-el34se/transformatoare-toroidale/toroidy/ 1x TSTA 120/002 https://www.tme.eu/ro/details/tsta120_002/transformatoare-toroidale/toroidy/tsta-120002/ @Nardu
  3. Transformatoare de iesire TOROIDY, mai clar aici - https://www.tme.eu/ro/katalog/transformatoare-toroidale_100028/#id_category=100028&s_field=artykul&s_order=ASC&visible_params=522%2C444%2C2%2C424%2C317%2C2846%2C1467%2C101%2C160%2C397&used_params=444%3A57647%3B @Nardu
  4. O solutie ieftina (cca 50 lei/buc) si viabila pentru trafo iesire la schemele care sau discutat, 5 W...10W, PP, SE, este utilizarea transformatoarelor de linie 100V/radioficare. Ceva teorie si exemple: http://www.ozvalveamps.org/optrans.htm#20%20watts http://home.alphalink.com.au/~cambie/6AN8amp/M1115.htm http://home.alphalink.com.au/~cambie/6AN8amp/Grant_Wills_6CM5amp.htm http://www.vk6fh.com/vk6fh/ECONOMICAL%20VALVE%20BASED%20AUDIO%20POWER%20AMPLIFIER.htm Trebuie vazut din ceea ce se gaseste pe plan local cam ce s-ar potrivi. @Nardu
  5. Poate T2.5 nu T2 Alegere curele https://reprap.org/wiki/Choosing_Belts_and_Pulleys @Nardu
  6. Trebuie sa fie o curea GT2 latime 6mm, ex. 1m liniar - http://reprapmania.ro/shop/componente-imprimante-cnc/curele-fulii-dintate/curea-gt2-la-metru/ se gaseste in multe alte locuri http://domoticx.com/mechanica-gt2-tandriem-en-pulley/# @Nardu
  7. Masoara pasul si latimea la pinion. http://assefair.ro/63-fulii-curele-roti-dintate http://nichelina-cnc.ro/index.php?cPath=50 http://reprapmania.ro/categorie-produs/componente-imprimante-cnc/curele-fulii-dintate/ https://www.pro-cnc.ro/curele-roti-t.html https://www.pro-cnc.ro/curele_si_roti_dintate_cu_pas_metric.html @Nardu
  8. Daca si celelalte trafo sunt de la Tango, e putin spus; numai catalogul e 50+25$ http://soundgate.net/product/NDI3.highend si un ex. de trafo perechi pt SE http://soundgate.net/product/NDYy.highend @Nardu
  9. Asa ceva merge 20-120 mm - https://materialeonline.ro/scule-si-unelte/972-freza-reglabila-pentru-gips-carton-20-120-mm.html (se gaseste in multe locuri, chiar mai ieftin) si nu-i nici scumpa. Trebuie sa o foloseste pe o masina de gaurit cu coloana; stabilitate, turatie mai mica, avans daca nu are automat il controlezi cat decat la mana, etc..... sa nu iti sara in cap. Am gasit acum http://supermeseriasu.blogspot.com/2013/10/gauri-cu-diametru-mare.html @Nardu
  10. Modul Frecventmetru Intre timp, am exersat putin Arduino Nano + Display LED serial cu Max7219 (nu spuneti la nimeni; 'am luat o piatra in gura'. De la Fortran 4, treaba cu cutia de pantofi si .... era la inceputuri ceva prin Basic,.... am mers la cei cu lopata, harletu' si alte scule mecanice/hidraulice pentru constructii...! E ceva timp...). Merg ambele coduri amintite in posturile anterioare. Urmeaza sa probez efectiv la ce frecventa max. merg real. Este evaluat la cca 8mHz. E bun. Voi deschide un post separat cu aceasta problema. @Nardu
  11. Transformatorul de iesire TGL-20/001 este pt un PP; date luate de la TME si Tabelul Indel - http://www.indel.pl/e_tgl.htm (aveam cunostiinta de tabel) Ceea ce nu ne arata niciunul, infasurarile, le gasim in imagine: Cu ce deranjeaza sa utilizez in schema propusa la post #30 numai o parte sau o combinatie din infasurarile primare care sa satisfaca cerintele SE ? Eu am afirmat "ca ar merge". Cu socul de filtraj de 5-10H e mai simplu; gasim un trafo de retea adecvat la primar si ii scoatem secundarul si punem un intrefier intre E si I. Nu avem cum sa nu-l nimerim! (5-10H) @Nardu
  12. Trafo TR2 = 250Vx0.15A + 6.3Vx3.5A il gasesti gata facut aici - https://www.tme.eu/ro/details/tsl70_001/transformatoare-cu-prindere/indel/ - 250Vx0.18A + 20Vx0.18A + 6.3Vx3.5A Trafo TR1 ar merge - https://www.tme.eu/ro/details/tgl20_001/transformatoare-cu-prindere/indel/tgl-20001/ @Nardu
  13. Nomograme pentru transformatoare de iesire (G. A. Sniterev) http://89.120.105.111/htmlham/VER2/CARTI%20SI%20REVISTE%20HAM%20RADIO/carti%20romanesti%20si%20alte%20pdfuri/Nomograme%20pentru%20transformatoare%20de%20iesire%20(G.%20A.%20Sniterev).pdf @Nardu
  14. EF86, If=200mA. Sincer, eu vad un moft; merge si fara stabilizare V1. http://www.mif.pg.gda.pl/homepages/frank/sheets/010/e/EF86.pdf http://www.jogis-roehrenbude.de/Roehren-Geschichtliches/Ef86/EF86_SV.pdf
  15. Scrie pe schema: TR2 = 250Vx0.15A + 6.3Vx3.5A @Nardu
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