GB181691A - Improvements in or relating to electric discharge tubes - Google Patents
Improvements in or relating to electric discharge tubesInfo
- Publication number
- GB181691A GB181691A GB13343/22A GB1334322A GB181691A GB 181691 A GB181691 A GB 181691A GB 13343/22 A GB13343/22 A GB 13343/22A GB 1334322 A GB1334322 A GB 1334322A GB 181691 A GB181691 A GB 181691A
- Authority
- GB
- United Kingdom
- Prior art keywords
- neon
- argon
- added
- helium
- potential
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/16—Selection of substances for gas fillings; Specified operating pressure or temperature having helium, argon, neon, krypton, or xenon as the principle constituent
Abstract
181,691. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. June 14, 1921, [Convention date]. Vacuum tubes; low-pressure metallic-vapour apparatus.-The main gas filling of a tube for use as a lamp, rectifier, or amplifier, has added to it a small quantity of a gas having a potential of ionization lower than the potential at which the first inelastic collision occurs in the main gas. In one example, 0.5 to 5 per cent of argon is added to neon at a pressure of 1 cm. of mercury. In such a tube, with electrodes 5 cm. apart, a discharge will be produced at 220 volts, whereas no discharge occurs at that potential in neon or argon alone. In other tubes, a small quantity of argon or krypton is added to helium : or krypton is added to argon. Commercial neon which consists of a mixture of neon and helium may be used as the main filling instead of purified neon. The Specification as open to inspection under Sect. 91 (3) (a) comprises also tubes in which a small quantity of neon is added to helium, or mercury to argon. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL181691X | 1921-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB181691A true GB181691A (en) | 1923-09-11 |
Family
ID=19777413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13343/22A Expired GB181691A (en) | 1921-06-14 | 1922-05-11 | Improvements in or relating to electric discharge tubes |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE417347C (en) |
| FR (1) | FR551280A (en) |
| GB (1) | GB181691A (en) |
| NL (1) | NL13401C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE419602A (en) * | 1936-01-24 | |||
| DE748239C (en) * | 1936-05-29 | 1944-10-30 | Electric light tube filled exclusively with noble gases with a luminophore layer attached to the inside of the tube | |
| US4978892A (en) * | 1988-12-27 | 1990-12-18 | Polaroid Corporation | Variable color-output strobe |
-
0
- NL NL13401D patent/NL13401C/xx active
-
1922
- 1922-05-02 DE DEN21073D patent/DE417347C/en not_active Expired
- 1922-05-11 FR FR551280D patent/FR551280A/en not_active Expired
- 1922-05-11 GB GB13343/22A patent/GB181691A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL13401C (en) | |
| DE417347C (en) | 1925-08-10 |
| FR551280A (en) | 1923-03-31 |
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