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Okolice Bluesa • Wyświetl temat - Wzmacniacze lampowe...
Strona 1 z 2

Wzmacniacze lampowe...

Post: lipca 21, 2007, 8:36 pm
autor: Vial

Post: lipca 21, 2007, 9:18 pm
autor: krienai

Post: lipca 22, 2007, 6:15 am
autor: Stanley-1
..włączenie obwodu zasilania wysokim napięciem roboczym podawanym na anody bez rozgrzanych katod stabilizujących warunki pracy lamp mocy powoduje ryzyko uszkadzenia lamp stopnia końcowego i nie tylko :(

Post: lipca 22, 2007, 9:13 am
autor: Turgon
Może ja tutaj ci kolego wytłumaczę od razu o co w tym wszystkim "łazi". Otóż odrobinka teorii na początek. Przeciętna lampa w twoim wzmacniaczu składa się z bańki, w niej próżnij i dwóch elektrod. Jedna to katoda druga anoda (tutaj są dodatnio naładowane elektrony i lecą do ujemnej katody - przeciwieństwa się przyciągają). I ktoś wymyślił, żeby wrzucić tam taką siatkę sterującą, która wykorzystuje zjawisko termoemisji elektronów. Żeby dokładniej omówić to zjawisko, musiałbym pokazać Ci kilka wykresów z których nic byś nie zrozumiał.
Ale wróćmy do tego tajemniczego przełącznika. Pomyśl skoro do osiągnięcia jakiejkolwiek wydajności potrzeba rozgrzać siatkę sterującą (inaczej nie puszcza elektrony), to żeby nie zniszczyć, trzeba to zrobić powoli i z wyczuciem. Po to jest standby. Wtedy na pewno lampy dłużej pożyją i jak już zaczniesz grać, to będę brzmieć tak jak należy! :mrgreen:

Post: lipca 22, 2007, 1:17 pm
autor: StS

Post: lipca 22, 2007, 5:08 pm
autor: KAJTEK
Oczywiście dobrze jest też włączyć standby przed wyłączeniem wzmacniacza...

Post: lipca 22, 2007, 8:14 pm
autor: Turgon

Post: lipca 23, 2007, 11:22 am
autor: KRIST

Post: lipca 23, 2007, 11:38 am
autor: Grzegorz Sterna
czyli rozumiem,z e stand by po właczeniu poweru wyłączamy?

Post: lipca 23, 2007, 12:42 pm
autor: Black_Beauty
Najpierw włączamy power i po jakiejś minucie stand by -ot cała filozofia i ten stand by pozostaje włączony.Gdy wyłączamy piec robimy odwrotnie.

Post: lipca 23, 2007, 12:55 pm
autor: Grzegorz Sterna

Post: lipca 23, 2007, 5:26 pm
autor: StS

Post: lipca 23, 2007, 5:30 pm
autor: krienai

Post: lipca 23, 2007, 7:09 pm
autor: Turgon
Za pewne musiałbyś pół wzmacniacza rozebrać i przerobić. Także rozwalić układ sumujący jak dobrze rozumiem, a reszta to kwestia, albo ta droga, albo ta :)

Post: lipca 23, 2007, 7:17 pm
autor: krienai
hm...dzięki... ktoś ma inne pomysły? :)

Post: lipca 24, 2007, 8:15 am
autor: Turgon

Post: lipca 24, 2007, 6:10 pm
autor: krienai

Post: lipca 24, 2007, 6:41 pm
autor: Turgon

Post: sierpnia 16, 2007, 9:12 pm
autor: franz

Post: sierpnia 17, 2007, 1:25 pm
autor: Pawel1991

Post: stycznia 20, 2008, 11:19 pm
autor: bartolini1313

Post: lutego 25, 2008, 9:04 pm
autor: micik

Post: lutego 26, 2008, 8:01 pm
autor: Turgon

Post: lutego 27, 2008, 2:18 pm
autor: Tomek D.

Post: lutego 27, 2008, 3:20 pm
autor: Turgon

Post: lutego 27, 2008, 10:22 pm
autor: Tomek D.

Post: lutego 29, 2008, 2:29 pm
autor: Turgon
Tomek D.: Zrozumiałem Ciebie widać nieco źle... Ale mniejsza o to.

Post: lutego 29, 2008, 10:26 pm
autor: Stanley-1

Post: marca 2, 2008, 11:31 am
autor: Turgon

Post: marca 3, 2008, 11:00 pm
autor: remek4blues