Antique radios, Old Time Radios
303U
|
Country:
United States of America (USA)
|
|
| Identical to |
303U
|
| Similar
Tubes |
Differences not known by us:
203H
; 303C
|
| Base |
Jumbo 4-pin bayonet (1918)
Top contact with a cap.
|
| Was used by |
Industrial |
| Filament |
Vf 10 Volts / If 3.25 Ampere / Direct |
| Description |
The 303U is a 125 watt triode with a mu of 21 made by United for use in diathermy. It has a graphite anode from a top cap, heavy anode and grid leads and high insulation between elements.
Max voltage = 1500
Max current = 200 ma
|
Dimensions (WHD)
incl. pins / tip |
x 216 x 59 mm / x 8.50 x 2.32 inch |
| Information source |
Tube Lore (II) p. 161
|
|
303U: Fin Stewart
Fin Stewart
|
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 |
|
|
|
