Antique radios, Old Time Radios
1P40
|
Country:
United States of America (USA)
|
|
| Identical to |
1P40
|
| Similar
Tubes |
Normally replaceable-slightly different:
930
; GL-1P40
; GL930
|
| First Source
(s) |
15.Aug.1947 : -- Original-techn. papers.
|
| Base |
Octal (Int.Octal, IO) K8A, USA 1935
|
| Was used by |
Technology / Measurement |
| Filament |
|
| Description |
Red-infrared-sensitive (up to 8000 Angstroms). Special design with a non-hygroscopic base for increased resistance between anode and photocathode pins under adverse conditions of high humidity. Side-on type having S-1 response. Has a maximum anode dark current at 25°C of 0.005 microampere at 90 volts.
Text in other
languages (may
differ)
|
Dimensions (WHD)
incl. pins / tip |
30 x 78 x mm / 1.18 x 3.07 x inch |
| Tube prices |
1 Tube prices (visible for members
only)
|
| Information source |
- - Manufacturers Literature RCA Phototubes and Photocells PT-60
|
|
|
 |
|
1P40: Collection JR
Jacob Roschy
|
| |
|
1P40
Emilio Ciardiello
|
| |
|
1P40: RCA
Patrice Zeissloff
|
from Just Qvigstad
|
|
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