Extrait de la collection de lampes / semi-conducteurs de Robert Gillespie. Ces images ont été chargées sur la page d'une lampe / semi-conducteur par Robert Gillespie.
| M55HG |
|
| Common type USA tube/semicond. |
USA |
|
| M57 |
|
| Gold Seal Electrical Co., In... |
USA |
|
| M77 |
|
| Gold Seal Electrical Co., In... |
USA |
|
| M78 |
|
| Gold Seal Electrical Co., In... |
USA |
|
| M80_metal-glass |
|
| Gold Seal Electrical Co., In... |
USA |
|
| M4205E |
|
| Standard Telephones and Cabl... |
GB |
|
| Mc |
1917 |
| Siemens (& Halske, -Schucker... |
D |
|
| ME-664-A |
|
| NEC Corporation, Nippon Elec... |
J |
|
| ME1400 |
|
| Common type Europe tube/semi... |
EU |
|
| Mesco_Rectifier |
|
| Manhattan Electrical Supply ... |
USA |
|
| MG20_RR |
|
| Radioröhrenfabrik GmbH (RRF)... |
D |
|
| Micro-Bigril |
1925 |
| La Radiotechnique (RT); Pari... |
F |
|
| MicroMetal |
|
| Métal; France (tubes) |
F |
|
| Microtriode |
|
| Grammont (Radiofotos, Fotos)... |
F |
|
| MKT4_5pin |
|
| Marconi-Osram - (Valves/Tube... |
GB |
|
| ML6258 |
|
| Machlett Labs (tubes); Sprin... |
USA |
|
| ML6544 |
|
| Machlett Labs (tubes); Sprin... |
USA |
|
| Moorhead_Ext_Grid |
1916 |
| Moorhead Laboratories (Pacif... |
USA |
|
| Moorhead_Special |
|
| Moorhead Laboratories (Pacif... |
USA |
|
| MR1_Osram |
|
| Ediswan, Siemens Edison Swan... |
GB |
|
| MR805 |
|
| EMKO A/S; København |
DK |
|
| MS30 |
|
| Radioröhrenfabrik GmbH (RRF)... |
D |
|
| MSI |
1918 |
| CHF Müller (Röntgen-Müller);... |
D |
|
| MSIV |
|
| Radioröhrenfabrik GmbH (RRF)... |
D |
|
| MT3F |
1919 ?? |
| Ediswan, Siemens Edison Swan... |
GB |
|
| MT5 |
|
| Marconi-Osram - (Valves/Tube... |
GB |
|
| MU6 |
|
| Daven Radio Co. ; Newark (NJ) |
USA |
|
| MU20 |
|
| Daven Radio Co. ; Newark (NJ) |
USA |
|
| MU20_UV |
|
| Daven Radio Co. ; Newark (NJ) |
USA |
|
| Multivalve |
1926 |
| Emerson Radval Co.; New York... |
USA |
|
