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Techtalk • View topic - Gyraf G9 Netzteil

Gyraf G9 Netzteil

Das Labor ist der richtige Ort um spezielle Projekte inkl. Fehlersuche zu diskutieren.

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Gyraf G9 Netzteil

Postby barthman.de » Mon Jun 07, 2010 4:38 pm

Hallo liebe Selbstbaugemeinde,

ich baue gerade an einem Gyraf G9 Preamp, wobei ich platinenmäßig nicht auf die verfügbare Fertigvariante zurückgegriffen habe. Vielmehr habe ich zunächst eine eigene Platine für das Netzteil entworfen. (entsprechend dem unteren Teil des bekannten Schaltplans auf der Gyraf Webseite; siehe auch )

Nachdem am 12 V - Teil und am 48V - Teil des Netzteils die korrekten Spannungen anliegen, ist die Spannung für den Anodenteil der Röhrenschaltung am Ausgang wesentlich höher (ca. 370 V statt den im Schaltplan angegebenen 245V). Könnte dies bereits auf einen Fehler hinweisen oder gilt die Angabe 245V im Schaltplan für den belasteten Zustand (also erst wenn die Röhren dranhängen - dies ist aktuell bei mir noch nicht der Fall). :?:
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Postby [silent:arts] » Mon Jun 07, 2010 5:19 pm

der TL783 regelt nur ab einer bestimmten Last
(min 15mA wenn ich richtig liege)
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Postby barthman.de » Tue Jun 08, 2010 5:52 pm

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