Extrait de la collection de lampes / semi-conducteurs de Rudolf Osterkamp. Ces images ont été chargées sur la page d'une lampe / semi-conducteur par Rudolf Osterkamp.
| ER_Moorhead |
1916 |
| Moorhead Laboratories (Pacif... |
USA |
|
| EVN171 |
1916 |
| Telefunken Deutschland (TFK)... |
D |
|
| R4C |
1919 ?? |
| GEC, General Electric Co Ltd... |
GB |
|
| 215A |
1919 |
| Western Electric Company Inc... |
USA |
|
| UV216 |
1921 |
| General Electric for Brand R... |
USA |
|
| B-II |
1922 |
| Philips; Eindhoven (tubes in... |
NL |
|
| UV201A |
1922 |
| General Electric for Brand R... |
USA |
|
| AR23 |
1923 |
| Loewe-(Opta); Deutschland |
D |
|
| ARDE |
1923 |
| Ediswan, Siemens Edison Swan... |
GB |
|
| E_Philips |
1923 ? |
| Philips; Eindhoven (tubes in... |
NL |
|
| LE229 |
1923 |
| Huth, Signalbau AG, Dr. Eric... |
D |
|
| PA2_Mullard |
1923 ? |
| Mullard Radio Valve Co. Ltd.; |
GB |
|
| WT501-gridless-triode |
1923 |
| Welsh Electric Lamp Corp, Ne... |
USA |
|
| 4215A |
1923 |
| Standard Telephones and Cabl... |
GB |
|
| DV2 |
1923 |
| DeForest-Tubes |
USA |
|
| A441 |
1924 |
| Philips; Eindhoven (tubes in... |
NL |
|
| DFA1 |
1924 |
| Mullard Radio Valve Co. Ltd.; |
GB |
|
| LF-ORA |
1924 ? |
| Mullard Radio Valve Co. Ltd.; |
GB |
|
| ONE-VOLT-ORA |
1924 |
| Mullard Radio Valve Co. Ltd.; |
GB |
|
| RE83 |
1924 |
| Telefunken Deutschland (TFK)... |
D |
|
| RE89 |
1924 |
| Telefunken Deutschland (TFK)... |
D |
|
| U220 |
1924 |
| Radioröhren-Laboratorium-Gmb... |
D |
|
| 205D |
1924 |
| Western Electric Company Inc... |
USA |
|
| A141 |
1925 |
| Philips; Eindhoven (tubes in... |
NL |
|
| A409 |
1925 |
| Philips; Eindhoven (tubes in... |
NL |
|
| A415 |
1925 |
| Philips; Eindhoven (tubes in... |
NL |
|
| B403 |
1925 |
| Philips; Eindhoven (tubes in... |
NL |
|
| DG |
1925 ? |
| Métal; France (tubes) |
F |
|
| Micro-Bigril |
1925 |
| La Radiotechnique (RT); Pari... |
F |
|
| RE209 |
1925 |
| Telefunken Deutschland (TFK)... |
D |
|
