misu ploiesteanu Posted December 4, 2021 Share Posted December 4, 2021 infasurarile sunt : 1-34,5Vx1,8A 2 -6,3VX03A 3-19VX0,88A cintareste 1,57Kg Quote Link to comment Share on other sites More sharing options...
merck Posted December 4, 2021 Share Posted December 4, 2021 Cam mica sectiunea. Lundahl sunt niste trafuri mici ca gabarit si un SE de 25W 1,2Kohmi are 2,5kg insa au miezuri bune. Nu gasesc acum repede sectiunea trafului Lundahl LL1627 dar mai caut. Quote Link to comment Share on other sites More sharing options...
misu ploiesteanu Posted December 6, 2021 Share Posted December 6, 2021 cam ce sectiune ar trebui sa aiba miezul? pentru a suporta curentul de repaus fara sa ajunga la saturatie la puterea maxima a amplificatorului- sa zicem 15-20w. Quote Link to comment Share on other sites More sharing options...
Усилитель Posted December 6, 2021 Share Posted December 6, 2021 (edited) Cam 20 -25 cm2. Edited December 6, 2021 by Усилитель Quote Link to comment Share on other sites More sharing options...
hpavictor Posted December 7, 2021 Share Posted December 7, 2021 Aiurea , unii uită că acel curent de repaus există și saturează miezul magnetic dacă nu ar avea întrefier ... Quote Link to comment Share on other sites More sharing options...
misu ploiesteanu Posted December 7, 2021 Share Posted December 7, 2021 (edited) adica prin tub trece un curent cc in lipsa semnalului conform psf stabilit...cred ca se intelege ca l-am denumit formal curent de repaus(ca in clasa b), corect era curent in repaus... Edited December 7, 2021 by misu ploiesteanu Quote Link to comment Share on other sites More sharing options...
misu ploiesteanu Posted December 7, 2021 Share Posted December 7, 2021 (edited) Усилитель un pachet de tole format E16 cu grosimea de 6cm ar fi suficent? eu cred ca nu e confortabil de bobinat din cauza ferestrei mici... E16 sunt usor de gasit de la UPS-uri Edited December 7, 2021 by misu ploiesteanu Quote Link to comment Share on other sites More sharing options...
Усилитель Posted December 7, 2021 Share Posted December 7, 2021 Ca marime ar fi destul, problema este ca nu e sigur ca intra tot firul plus straturile izolatoare necesare, care e bine sa fie multe si groase pt o capacitate parazita mai mica, exista formule de calcul pt asta. Tot as merge pe ceva C core..... au si miezul mai calitativ. Am si eu cate o pereche in asteptare de 60W,90W si 120W, pana gasesc fire la pret acceptabil. Momentan mai am 2 perechi de trafuri pp pt 6L6GC noi de fabrica. Da tot o sa fac un SE cu traf bobinat de mine UL si CFB, pt GU50 sau OS51.... Quote Link to comment Share on other sites More sharing options...
franzm Posted December 7, 2021 Share Posted December 7, 2021 https://www.mouser.de/c/passive-components/emi-filters-emi-suppression/ferrites/ferrite-cores-accessories/?q=AMCC Quote Link to comment Share on other sites More sharing options...
misu ploiesteanu Posted December 7, 2021 Share Posted December 7, 2021 franzm AMCC-630 miez la 1435mm2 ar fi super...dar frecam pusca ca iepurasul la 100euro bucata... Quote Link to comment Share on other sites More sharing options...
merck Posted December 7, 2021 Share Posted December 7, 2021 Acum 1 oră, Rammstein a spus: La SE ai același curent prin bobina primară a transformatorului de ieșire,indiferent de puterea livrată de amplificator cu o creștere de câțiva mA când deja ești în clipping, este improprie denumirea de "curent de repaus" la SE. Serios??? Baga dom'le un semnal dreptunghiular la intrarea unui amplificator SE si vezi daca ai sau nu acelasi curent prin infasurarea primara a trafului. Quote Link to comment Share on other sites More sharing options...
Усилитель Posted December 7, 2021 Share Posted December 7, 2021 (edited) La 100 euroi este dea gata : TTG-KT88PSE - Tube output UL transformer [1,5kOhm] KT88 / 300B PSE Nominal Power 60W Nominal anode current 300 mA Frequency bandwidth (-3dB) 10 Hz - 56 kHz Secondary Impedance 4 and 8 Ω Primary Impedance 1,5 kΩ Turns Ratio (Np:Ns) 19,36:1 (4Ω) , 13,69:1 (8Ω) Primary Inductance Lp 46,5 H Primary Leakage Inductance Lsp 13,85 mH Total Primary DC Resistance 64,8 Ω Effective Primary Capacitance 6,77 nF Dimensions (standard) śr.zewn 115 mm, wys. 65 mm, waga: 2,6 kg Edited December 7, 2021 by Усилитель Quote Link to comment Share on other sites More sharing options...
Mircea Posted December 7, 2021 Share Posted December 7, 2021 20 minutes ago, merck said: Serios??? Baga dom'le un semnal dreptunghiular la intrarea unui amplificator SE si vezi daca ai sau nu acelasi curent prin infasurarea primara a trafului. Asta e cam din ciclul: cand vreau sa dovedesc ceva, nu conteaza mijloacele. Hai, mai Adriane, si tu acuma?! Quote Link to comment Share on other sites More sharing options...
merck Posted December 7, 2021 Share Posted December 7, 2021 (edited) Acum 6 minute, Mircea a spus: Asta e cam din ciclul: cand vreau sa dovedesc ceva, nu conteaza mijloacele. Hai, mai Adriane, si tu acuma?! Pai de ce nu-i explici tu ca intr-un traf daca in primar nu ai variatie de tensiune => nu apare nimic in secundar. Daca accepta asta si coroborat cu ce sustine el ca, curentul este acelasi => puterea trasa din sursa in clasa A este variabila. Cateodata trebuie sa te folosesti de exemple extreme ca sa inteleaga omul. Edited December 7, 2021 by merck Quote Link to comment Share on other sites More sharing options...
misu ploiesteanu Posted December 7, 2021 Share Posted December 7, 2021 (edited) Acum 42 minute, Усилитель a spus: La 100 euroi este dea gata : TTG-KT88PSE - Tube output UL transformer [1,5kOhm] KT88 / 300B PSE Nominal Power 60W Nominal anode current 300 mA Frequency bandwidth (-3dB) 10 Hz - 56 kHz Secondary Impedance 4 and 8 Ω Primary Impedance 1,5 kΩ Turns Ratio (Np:Ns) 19,36:1 (4Ω) , 13,69:1 (8Ω) Primary Inductance Lp 46,5 H Primary Leakage Inductance Lsp 13,85 mH Total Primary DC Resistance 64,8 Ω Effective Primary Capacitance 6,77 nF Dimensions (standard) śr.zewn 115 mm, wys. 65 mm, waga: 2,6 kg Corect devine varianta cea mai buna dar varianta SE nu PSE cu 3,5kohmi sau ar mai fi varianta asta daca or expedia la noi: http://tubeamp.ininet.hu/product_info.php/products_id/536 Edited December 7, 2021 by misu ploiesteanu adaug date Quote Link to comment Share on other sites More sharing options...
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