skalen lamp for saba sabine

[inecik]

Hi,I have buyed a saba sabineM , the skalen lamps is faulty and I have got 12volt 0,5Amp. but orijinal lamp is 12volt 0,1Amp. What can I do, can I replace 0,5amp. or ?

[rettigsmerb]

Hello,

basically it is not recommended, to replace lamps by such a type with a significant higher rating.

Is it correct, when I assume, that you've got a "SABA Sabine U"? This set has a series heater circuit with a current draw of 100mA. So, if you install two 0,5A-bulbs, they will only glow very, very weak and the filaments of all the tubes together have to dissipate in addition the about 20Volt that normally are dissipated at the bulbs. This may lead to filament failure in a tube.

Warning: SABA Sabine U is not equipped with a mains isolation transformer! Therefore the chassis may be live, when connected to a wall outlet! Serious injury or death may occur when you touch the chassis under these circumstances!

[Doppeltriode]

Hi, basically you can use a 12 V 0,5 A lamp instead the original value of 12 V 0,1 A, assumed the transformer of your Saba Sabine is suitable for this power (6W instead 1,2 W; unfortunately I don't have the circuit diagram of this device, maybe a colleague of the forum can support you ). 12 V/ 0,1 A lamps you can purchase here http://www.die-wuestens.de/dindex.htm

BR
Ernie

[röhrenradiofreak]

Radios with 12V/0.1A dial lamps don't have a mains transformer. They are, as rettigsmerb wrote, eqipped with a series heater circuit. This applies to the older types: Sabine UA265, Sabine UA295, Sabine 55070, Sabine L, and Sabine M. Later versions, such as Sabine 125, Sabine 11, Sabine 12 and Sabine 14, have a mains transformer, but no 12 V dial lamps.

Lutz

[Doppeltriode]

@Lutz: learning by doing....
Als Newbie kenne ich bei meinen bisherigen 4 Geräten, dass die Versorgungsspannugen (Skalenlampen, Heizspannung für die Röhren) über einen Trafo gewonnen wird (selbst mein ältestes Gerät Nora W28 Csardas von 1939 generiert die 4 V~ über einen Trafo). Jetzt verstehe ich, was Herbert in seinem Posting gemeint hat, wieder was dazu gelernt

Gruß
Ernie

[röhrenradiofreak]

Dann hast Du offensichtlich kein Allstromgerät dabei. Allstromgeräte sind, was die Stromversorgung betrifft, eine andere Welt.

Lutz