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grau

Udrobljena gramofonska tema

1379 posts in this topic

a sta pravisu sprecava da koristi 8 oma sekundar za ultra nisku izlaznu impedanciju? mozda je glupo pitanje ali moze mi se...

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Ako je impedansa 5000 oma prema 600 oma, onda je prenosni odnos kvadratni koren kolicnika sqrt(5000/600) = 2.88 ili 9.2db. To je step down odos i to je u startu oko -10db gubitaka koji se moraju nadoknaditi pojacajem cevi, nepotebno unosenje anomalija pri pojacanju, da bi se to posle samnjaivalo trafoom? To znaci da za recimo 10x totalno pojacanje preampa, cev mora biti 10 x 2.88=29 cca. pojacanje u kolu, i odgovarajucu nizi unutrasnji otpor za datu induktivnost primara.

Za 8 oma izvod, step-down je sqrt(5000/8)=25 ili oko -30db smanjenja signala... :( Cak i ako se nadje odgovarajuca cev sto se unutrasnjih parametra tice, i ako ima pojacanje u kolu oko 50 X, i dalje ce bit samo totalno pojacanje 2 x.

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veceras

popio fervex i odo spavati

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7 hours ago, Zen Mod said:

veceras

popio fervex i odo spavati

Noge do chukljevi u lavor sa ladnu vodu oko dvajes sekundi.Potljevo odmak obrisati sa frotir peshkir shto grublje,ondak navuci vunene charape i trk u krevet.

S ti kurchevi paracetamoli samo trujesh zheludak.Bolje krni kuvano vino ili vrochu radzanu.

Pozdraf ot Dotore Rengele.

Zflazar likes this

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A i ti ferveksi i koldreksi suzavaju krvne sudove(imaju odredjen efekat na zapusene njonje), pa ih treba izbegavati kod velikog punoletstva.

Uz Digitalove recepte, nije losa ni topla limunada sa dosta meda ili secera, i banana pride zbog kalijuma. Narocito za nikotin ljubitelje..

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