GB423390A - Improvements in or relating to circuits comprising gasfilled triodes - Google Patents
Improvements in or relating to circuits comprising gasfilled triodesInfo
- Publication number
- GB423390A GB423390A GB3348233A GB3348233A GB423390A GB 423390 A GB423390 A GB 423390A GB 3348233 A GB3348233 A GB 3348233A GB 3348233 A GB3348233 A GB 3348233A GB 423390 A GB423390 A GB 423390A
- Authority
- GB
- United Kingdom
- Prior art keywords
- external anode
- valve
- circuit
- operate
- general electric
- 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
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/50—Thermionic-cathode tubes
- H01J17/52—Thermionic-cathode tubes with one cathode and one anode
- H01J17/54—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes
- H01J17/56—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes for preventing and then permitting ignition, but thereafter having no control
Landscapes
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Discharge Lamp (AREA)
Abstract
423,390. Valve circuits. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, DUNHAM, C. R., and LEWER, S. K., c/o General Electric Co., Wembley, Middlesex. Nov. 29, 1933, No. 33482. Drawings to Specification. [Classes 39 (i) and 40 (v)] A circuit arrangement adapted to operate with a frequency exceeding 1,000 cycles per second, more particularly as a relaxation oscillation generator, comprises a gas-filled triode valve with an external anode. The generated oscillation may provide the time-base of a cathode-ray oscillograph and the external anode enables the circuit to operate at a higher frequency than a circuit employing the usual valve with all the electrodes within a glass envelope. The external anode forming part of the envelope is preferably of copper and its diameter may be 14 mm. The grid control ratio may be about 25. The filling may be mercury vapour maintained by a globule of mercury, or it may be helium at about À5 mm. pressure. Specifications 192,673, [Class 39 (i)], and 418,828 are referred to.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3348233A GB423390A (en) | 1933-11-29 | 1933-11-29 | Improvements in or relating to circuits comprising gasfilled triodes |
| FR781279D FR781279A (en) | 1933-11-29 | 1934-11-15 | Gas atmosphere oscillator |
| FR781650D FR781650A (en) | 1933-11-29 | 1934-11-21 | Oscillating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3348233A GB423390A (en) | 1933-11-29 | 1933-11-29 | Improvements in or relating to circuits comprising gasfilled triodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB423390A true GB423390A (en) | 1935-01-31 |
Family
ID=10353529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3348233A Expired GB423390A (en) | 1933-11-29 | 1933-11-29 | Improvements in or relating to circuits comprising gasfilled triodes |
Country Status (2)
| Country | Link |
|---|---|
| FR (2) | FR781279A (en) |
| GB (1) | GB423390A (en) |
-
1933
- 1933-11-29 GB GB3348233A patent/GB423390A/en not_active Expired
-
1934
- 1934-11-15 FR FR781279D patent/FR781279A/en not_active Expired
- 1934-11-21 FR FR781650D patent/FR781650A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR781650A (en) | 1935-05-18 |
| FR781279A (en) | 1935-05-11 |
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