Antique radios, Old Time Radios
889_No-2
|
Country:
United States of America (USA)
|
|
| Identical to |
889_No-2
|
| Base |
Octal (Int.Octal, IO) K8A, USA 1935
|
| Was used by |
Technology / Measurement |
| Filament |
Vf 1.5 Volts / If 1.5 Ampere / Indirect |
| Description |
This tube is designed to demonstrate the principles of the electron lens and how they can be used to function as a microscope. In the tube the surface of the oxide coated nickel cathode is enlarged approximately 25 times and projected on to a fluorescent screen (which glows green) at the top of the tube.
Focus electrode voltage 0 - 300; Anode voltage 500-1000
|
Dimensions (WHD)
incl. pins / tip |
x 163 x 52 mm / x 6.42 x 2.05 inch |
| Information source |
Tube Lore (II) p. 81
Electronics December 1936, p. 52
|
|
|
|
Just Qvigstad
|
|
|
|
|
|
You reach this tube or valve page from a search
after clicking the "tubes" tab or by clicking a tube
on a radio model page. You will find thousands
of tubes or valves with interesting links. You
even can look up radio models with a certain tube
line up.
[rmxtube-en]
| Data Compliance |
More Information |
|
|
|
