| Identical to |
AB1
= A4DD
= DD465
= TB1
= TAB1
= WE31
|
| Similar
Tubes |
AB2 (other base)
BB1 (Heater different)
CB1 (Other base and other base diagram)
D41_Geco (can normally be replaced - small diff'ce)
NDD40 (can normally be replaced - small diff'ce)
|
| First Series |
Mar.1934 Tube leaflet collection E.Erb Analysis by original leaflets |
| First Source
(s) |
Mar.1934 : Philips Bulletin
Feb.1934 : Toute la radio # 1
|
| Successor Tubes |
1935
AB2
|
|
| Base |
Europe 5-Pin (O5A, B5) (Codex=Fc)
Top contact with a cap
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
-: Indirect /
-: Parallel, (AC/DC) /
If: 0.65 Ampere /
Vf 4 Volts /
|
| Tube prices |
1 Tube prices (visible for members
only)
|
| Literature |
Taschenbuch zum Röhren-Codex 1948/49
|
|
