Excerpt from the tube collection of Peter Pfeiffer. These images (tube photos) were uploaded to the respective tubes or valves by Peter Pfeiffer.
3B24WB |
|
Common type USA tube/semicond. |
USA |
|
3B29 |
|
Common type USA tube/semicond. |
USA |
|
3CE5 |
|
Hytron; Salem (MA) |
USA |
|
3CX3000A7 |
|
Eimac (brand name) |
USA |
|
3D6 |
|
Common type USA tube/semicond. |
USA |
|
3Q4 |
|
Common type USA tube/semicond. |
USA |
|
3Q5GT |
|
Common type USA tube/semicond. |
USA |
|
3Q5GT/G |
|
Common type USA tube/semicond. |
USA |
|
3TF7 |
|
Amperite Co., Inc.; Union Ci... |
USA |
|
3V4 |
1945 |
Common type USA tube/semicond. |
USA |
|
3V4_Amperite |
|
Amperite Co., Inc.; Union Ci... |
USA |
|
4-125A |
|
Electrons Inc.; Newark, NJ |
USA |
|
4D21 |
|
Common type USA tube/semicond. |
USA |
|
4X150A |
|
Common type USA tube/semicond. |
USA |
|
4X150G |
|
Eimac (brand name) |
USA |
|
5R4WGY |
|
Raytheon Mfg. Co.; Cambridge... |
USA |
|
5TF4 |
|
Amperite Co., Inc.; Union Ci... |
USA |
|
5U4 |
|
Common type USA tube/semicond. |
USA |
|
5V4 |
|
Common type USA tube/semicond. |
USA |
|
5V4GA |
|
Common type USA tube/semicond. |
USA |
|
5V6GT |
|
Common type USA tube/semicond. |
USA |
|
5W4 |
1936 |
Common type USA tube/semicond. |
USA |
|
5W4G |
|
Common type USA tube/semicond. |
USA |
|
5Y3WGT |
|
Sylvania (Hygrade, GTE, Nilc... |
USA |
|
5Y3WGTA |
1953 ? |
Common type USA tube/semicond. |
USA |
|
5Z3 |
|
Common type USA tube/semicond. |
USA |
|
5Z4 |
1935 |
Common type USA tube/semicond. |
USA |
|
6-4 |
|
Amperite Co., Inc.; Union Ci... |
USA |
|
6A7 |
1933 |
Common type USA tube/semicond. |
USA |
|
6A8G |
1936 |
Common type USA tube/semicond. |
USA |
|
Peter Pfeiffer started his/her tube collection (valve collection) here on 07.May.2020.
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