Cristian74 Posted April 15, 2015 Share Posted April 15, 2015 Este un topic interesant in care as dorii sa se expuna scheme simple sau mai complicate, pentru realizarea de radioreceptoare folosind tubul EEA91. Prima schema propusa un radio cu doua lungimi de unda UL/UM: http://www.uploadarchief.net/files/download/eaa91.jpg http://www.circuitsonline.net/forum/view/96855 Link to comment
Untold Posted April 15, 2015 Share Posted April 15, 2015 Si pe anozi se conecteaza castile sau iesire pt audio? Link to comment
Cristian74 Posted April 15, 2015 Author Share Posted April 15, 2015 (edited) Fie casti de mare impedanta sau audio ci LM386. am vazut pe undeva ceva asemanator. Daca gasesesc schema o postez. http://www.mikroe.com/old/books/rrbook/chapter3/21a.gif Se alimenteaza cu 6V intocmai cat este necesar pentru Uf. Edited April 15, 2015 by Cristian74 Link to comment
Cristian74 Posted April 16, 2015 Author Share Posted April 16, 2015 Schema cu amplif: Schema nr 2: http://www.welt-der-alten-radios.de/detektor-roehrendetektor-186.html Link to comment
Untold Posted April 16, 2015 Share Posted April 16, 2015 Interesanta prima schema, cu amplificator cu LM386! Insa, de unde EAA91? E fain ca are doua circuite oscilante, unul pt UL si altul pentru UM. Ce lungime trebuie sa aiba antena? 10 m ar fi suficient? Link to comment
tm07uxo Posted April 16, 2015 Share Posted April 16, 2015 Varianta Rusia .... Cine nu are un radio rusesc pe lampi in casa? de exemplu Baltika care are dioda dubla la detectie si , si, si COOOL octala. Le putem imprumuta de aici . Si sint si alte aparate . Link to comment
Cristian74 Posted April 16, 2015 Author Share Posted April 16, 2015 EEA91=6AL5=EB91=6X2p=6D2 http://www.radiomuseum.org/tubes/tube_eaa91.html Schema nr.3: Radio EAA91 - Copie.pdf Link to comment
Kuki Posted April 16, 2015 Share Posted April 16, 2015 Am mai multe 6X6S. http://tinypic.com/view.php?pic=2ynigiu&s=8#.VS-BQfmUc6U In schema de mai sus (franceza) condensatorul de 1 pF vrea sa fie de 1 nF ? Link to comment
Cristian74 Posted April 16, 2015 Author Share Posted April 16, 2015 Am mai multe 6X6S. http://tinypic.com/view.php?pic=2ynigiu&s=8#.VS-BQfmUc6U In schema de mai sus (franceza) condensatorul de 1 pF vrea sa fie de 1 nF ? 1pF e prea micut, ca si cum n-ar fi. De accord cu valori intre 220pF- 4,7nF 6X6S parca este dubla triode... Tubul echivalent cu EAA91 este 6X2p Link to comment
mișa Posted April 16, 2015 Share Posted April 16, 2015 6X6S (6X6C) e dubla dioda detectoare. ( soclu octal ) E buna in loc de EAA91. ( http://www.radiomuseum.org/tubes/tube_6h6s.html ) Link to comment
Cristian74 Posted April 16, 2015 Author Share Posted April 16, 2015 poza 6X2p-EV 6X6S (6X6C) e dubla dioda detectoare. ( soclu octal ) E buna in loc de EAA91. ( http://www.radiomuseum.org/tubes/tube_6h6s.html ) ok este asemanatoare cu http://tubes-store.com/product_info.php?products_id=200 Deci e buna si 6X6C Link to comment
mișa Posted April 16, 2015 Share Posted April 16, 2015 Da, mai gasesti greseli, mai ales la lampi foarte rar cumparate de cineva. Eu am acea 6x6s, mai multe... ( http://www.datasheetarchive.com/dl/Scans-008/Scans-00176262.pdf ) Link to comment
Cristian74 Posted April 16, 2015 Author Share Posted April 16, 2015 (edited) Schema nr.4 Desenata de mine fara bobine, merge foarte bine in zona Bod pe 153KHz, poate primim si un retur de la cineva de acolo... Edited April 16, 2015 by Cristian74 Link to comment
Cristian74 Posted April 16, 2015 Author Share Posted April 16, 2015 Schema nr.5: Este o varianta a schemei nr4, tot fara bobine... Link to comment
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