Gosha Napisano April 20, 2018 Share #23 Napisano April 20, 2018 32 minutes ago, shonne said: da li ova karakteristika utice na kvalitet tranzistora u audio? Da te ne zavara taj graf. Crtano je u log-log trazmeri. Ovako izgleda taj graf u lin-lin razmeri za jedan tranzistor sa veoma maliim Ccb: U ptanju je tranzistor BFQ235A koji ima i svog komplementa BFQ255A i ft veu od 1GHz !!! Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Maj 7, 2018 Share #24 Napisano Maj 7, 2018 http://www.homecinema-fr.com/forum/diy-amplification/up-grade-t30013308.htmlKombinacija sa 24VAC, ulaz u regulator oko 48VDC, na front end oko plus minus 40VDC.Deluje interesantno. Oko 185W AB, a A klasa koliko pustis struju. Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Mart 11, 2019 Share #25 Napisano Mart 11, 2019 ko kaze da gerberi na mogu da se importuju za dalja mod sky is the limit... Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Mart 11, 2019 Share #26 Napisano Mart 11, 2019 ja za proveru i edit gerber files koristim VisualCam , to mu dodje zadnja iteracija GerbTool Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Mart 11, 2019 Share #27 Napisano Mart 11, 2019 Iskreno sve sto sam do sad pokusavao nisam uspeo da odradim. Samo sam uspevao da ih ucitam. Na to mislim samo na gerbere, bez project file....Ovo sto se danas majao, uspeo sa Altium designer. Sent from my Nokia 2 using Tapatalk Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Mart 11, 2019 Share #28 Napisano Mart 11, 2019 Prvi pokusaji su bili takvi da sam uspeo da ubacim lejere i silk ali rupe nikako [emoji23]Napravili neki file za cnc masine... Dok to nisam ukapirao kako manipulisati. Sent from my Nokia 2 using Tapatalk Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Mart 11, 2019 Share #29 Napisano Mart 11, 2019 25 minutes ago, shonne said: Prvi pokusaji su bili takvi da sam uspeo da ubacim lejere i silk ali rupe nikako Napravili neki file za cnc masine... Dok to nisam ukapirao kako manipulisati. Sent from my Nokia 2 using Tapatalk o's visual cam? Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Mart 11, 2019 Share #30 Napisano Mart 11, 2019 Za sad, ove mod koje treba da odradim za UP grade verziju PSU sam zavrsio u Altium. Reseno. Thx enivej [emoji16] Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Mart 11, 2019 Share #31 Napisano Mart 11, 2019 nego @Zen Mod ovakva plocica, ti zavrsava posao za neki amp? Imas od mene kada bude sledece narucivanje pcb 2 gratis Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Mart 11, 2019 Share #32 Napisano Mart 11, 2019 tnx but no , tnx I did made my own Mikorist and shonne je reagovao/la na ovo 2 Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Mart 12, 2019 Share #33 Napisano Mart 12, 2019 za danas dosta crtanja.... ja kad to radim, onda na kraju ce da bude ovako nesto Aleks je reagovao/la na ovo 1 Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Mart 18, 2019 Share #34 Napisano Mart 18, 2019 kazu kad imas XLR vezu, da bilo koji kabli stavis na RCA ne mozes da dobijes to sto daju XLR... hm. Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Mart 18, 2019 Share #35 Napisano Mart 18, 2019 aha jos jedno od onako nedorecenih pravila a najvise ga propagiraju audiofili koji imaju uredjaje koj i su unutra cisti SE , sa nakarikanim operacionim da doda negativnu fazu balansirano samo ako je full diferencijalno , i da je bar 80% puta signala skroz tako onda ima boljitka , pod uslovom da ti odgovara vrsta zvuka koji to donosi ....... uglavnom mala izoblicenja , dominantni 3rd da se otelis i ulozis bar 25 godina iskustva da namerno narusis simetriju , da dobijes malo secera od 2nd harmonika a da ne useres motku Srecko and hifish je reagovao/la na ovo 1 1 Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Mart 18, 2019 Share #36 Napisano Mart 18, 2019 point 5 je takav, cist, koliko znam sa point 8 je Papa uspeo u svemu tome, da dobije 2nd harmonik. Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Mart 18, 2019 Share #37 Napisano Mart 18, 2019 zahvaljujuci iskustvima sa .8 , to je moguce i sa .5 naravski , moguce je i sa Aleph X , istina na drugaciji nacin ..... ono to sam ja uradio u Babelfish XJ Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Mart 18, 2019 Share #38 Napisano Mart 18, 2019 ako posmatramo diferencijalne pojacivace, gledam ove francuze. Da li sa promenom feedbacka, osim promena gain-a moze da se utice i na THD spektar? Kakva su iskustva u tome? Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Mart 18, 2019 Share #39 Napisano Mart 18, 2019 nastavi u svojoj temi Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Mart 18, 2019 Share #40 Napisano Mart 18, 2019 aj prebacite zadnja pisanija iz kablova... ono sto mene interesuje, opcije koje mi se nude su: RFB=392K/RIN=27K/ROUT=1K -> 22.1dB RFB=392K/RIN=27K/ROUT=10K -> 23.1dB RFB=392K/RIN=22K/ROUT=1K -> 23.7dB RFB=392K/RIN=22K/ROUT=10K -> 24.8dB RFB=499K/RIN=27K/ROUT=1K -> 23.9dB RFB=499K/RIN=27K/ROUT=10K -> 25.1dB RFB=499K/RIN=22K/ROUT=1K -> 25.5dB RFB=499K/RIN=22K/ROUT=10K -> 26.9dB Da ne jurim simulatore, mozda neka iskustva sa FB... da li bi promena njegova uticala na THD spektar. Link to comment Podeli na ovim sajtovima More sharing options...
Zen Mod Napisano Mart 18, 2019 Share #41 Napisano Mart 18, 2019 imas to u simulatoru? Link to comment Podeli na ovim sajtovima More sharing options...
Aleks Napisano Mart 18, 2019 Share #42 Napisano Mart 18, 2019 34 minutes ago, Zen Mod said: zahvaljujuci iskustvima sa .8 , to je moguce i sa .5 (No replacement for displacement! ) Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Mart 18, 2019 Share #43 Napisano Mart 18, 2019 6 minutes ago, Zen Mod said: imas to u simulatoru? jok, nemam... imam samo za ugs preamp... Moracu malo da se pomucim ako ne dobijem konkretne savete. ono sto oni kazu sa njihovog foruma. And the gain in all this? Ben as it is, it is about 23dB. But it can be modified easily by changing some resistances (ROUT, RFB and RIN these last two being the resistances of the reaction), and according to the simus one has: RFB = 392K / RIN = 27K / ROUT = 1K -> 22.1dB RFB = 392K / RIN = 27K / ROUT = 10K -> 23.1dB RFB = 392K / RIN = 22K / ROUT = 1K -> 23.7dB RFB = 392K / RIN = 22K / ROUT = 10K -> 24.8dB RFB = 499K / RIN = 27K / ROUT = 1K -> 23.9dB RFB = 499K / RIN = 27K / ROUT = 10K -> 25.1dB RFB = 499K / RIN = 22K / ROUT = 1K -> 25.5dB RFB = 499K / RIN = 22K / ROUT = 10K -> 26.9dB So you can adapt it as you want. The choice between a 10K or 1K Rout (or any other intermediate value) will be done by ear, the repercussions being subtle and highly subjective. Another possibility that is offered is to be able to choose between a local or global feedback by closing the loop at the output of the first stage (CR "local") or on the whole of the amp (global CR). Again, the choice is by ear, but to summarize, the local CR sounds a bit warmer than the global CR, offering a more in line with the Alephs X. But it is mainly a matter of taste perso: P. Note however that the local CR slightly decreases the gain, since the "gain" output mosfets (mounted followers, and therefore gain <1) is no longer offset by the loop of CR. The first stage is powered at a voltage slightly higher than that of the power stage, just to make the most of possible voltage excursions, which naturally brings us to the ... E sad, sve ostaje na uvo da se cuje... Link to comment Podeli na ovim sajtovima More sharing options...
shonne Napisano Mart 19, 2019 Share #44 Napisano Mart 19, 2019 ono, zasto sam se opredelio za UP-grade verziju na 32VDC tj 24VAC, @Aleks da vidi, da ne kaze da je samo snaga u pitanju, vec ima malo i nesto drugo. https://www.homecinema-fr.com/forum/diy-amplification/up-grade-t30013308-135.html?hilit=2n5461 Bonjour à tous, hier mon upgrade est allé faire un tour chez Oo7livier qui n'habite pas très loin de chez moi pour évaluer l'UPgrade face à 2 Youpis standards (en façade malza superbes au passage). un autre forumeur Ged23 était présent lui aussi. l'écoute s'est faite sur des B&W 800D dans une salle assez grande. je vais laisser à Olivier le soin de faire un compte rendu de son ressenti, mais le verdict a été sans appel. l'UPgrade à gagné par KO. non seulement le grave est mieux tenu mais le medium et l'aigu bénéficient des améliorations. au niveau médium les instruments prennent plus de corps (mélodie Gardot , I am a fool, la résonance de caisse de la guitare (30s à droite) prend du volume et de la matière. l'aigu est niveau globalement plus doux/plus fin. l'image est aussi de mon point de vu plus précise et les instruments plus détourés. en gros le ressenti que j'avais eu sur mes panneaux s'est retrouvé sur son système. u prevodu... Hello everyone,yesterday my upgrade went to take a walk at Oo7livier who does not live very far from my home to evaluate the UPgrade against 2 standard Youpis (malza facade superb in passing). another forumer Ged23 was present too. listening was done on B & W 800D in a room big enough. I am going to let Olivier report on his feelings, but the verdict was final. the UPgrade won by knockout. not only the bass is better held but the medium and high benefit from improvements. on the medium level the instruments take more body (Gardot melody, I am a fool, the resonance of the guitar case (30s on the right) takes volume and material, the treble is globally softer / finer level. the image is also from my point of view more precise and the instruments more out of the way ... basically the feeling I had on my panels ended up on his system. Link to comment Podeli na ovim sajtovima More sharing options...
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