GB730252A - Improvements in or relating to circuit arrangements and discharge tubes for high-frequency amplification - Google Patents
Improvements in or relating to circuit arrangements and discharge tubes for high-frequency amplificationInfo
- Publication number
- GB730252A GB730252A GB13071/53A GB1307153A GB730252A GB 730252 A GB730252 A GB 730252A GB 13071/53 A GB13071/53 A GB 13071/53A GB 1307153 A GB1307153 A GB 1307153A GB 730252 A GB730252 A GB 730252A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- grid
- less
- pin
- screens
- 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
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
- H03F1/10—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of amplifying elements with multiple electrode connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
- C02F1/682—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water by addition of chemical compounds for dispersing an oily layer on water
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
- C10L1/328—Oil emulsions containing water or any other hydrophilic phase
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/20—Tubes with more than one discharge path; Multiple tubes, e.g. double diode, triode-hexode
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/003—Tubes with plural electrode systems
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Medicinal Chemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Microwave Amplifiers (AREA)
Abstract
730,252. Thermionic valves. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 11, 1953 [May 14, 1952], No. 13071/53. Class 39 (1). In a double valve for amplifying at 30 to 1000 Mc./sec. with the first stage operating with grounded cathode and the second with grounded grid, the amplification factor of each section is less than 40, and each cathode has an area of less than 15 mm.<SP>2</SP> and is adapted to carry a current greater than 10 per cent of its saturation current; the cathode of the first system is connected to the grid of the second system by a capacitor C, Fig. 1, which also acts as a shield between the sections. A double triode has screens 7 and 9, Fig. 2, joined by screen 8 and also forming a capacitor of 100 to 200 pf. with screens 10 and 11 and insulated from them by mica plates 13. Screen 18 with flange 19 completes the screening. Cathode 3 is connected at either end to screens 7 and 9 and separately to pin Kl-1, whilst screen 7 is connected to Kl-2; pins Kl-1 and K1-2 being separated so that the mutual inductance between them is less than 3 x 10-<SP>9</SP> H. Control grid 4 is spaced from the cathode by less than 100 microns whilst the anode to grid spacing is less than 300 microns. Alternatively a second grid, directly connected to the anode, may be positioned only 150 to 250 microns from the control grid. The anodes may have a smaller active surface than that of the corresponding cathode. The second cathode 14 is connected to pin K2, the control grid is connected to screens 10 and 18 and pin G2, whilst the anode 17 is connected to pin A2. The assemblies are preferably mounted with pins Kl-1 and A2 respectively widely separated from K2 and G1, with pins A2 and K2 on the same side of screen 8 and on opposite sides of 19, Fig. 4. In an alternative arrangement (Figs. 5 and 6, not shown) the anode of the first system is internally connected directly or through an inductor and resistor to the cathode of the second and no external connections are provided for these electrodes. Separate pin connections can then be provided for the two heaters.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL730252X | 1952-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB730252A true GB730252A (en) | 1955-05-18 |
Family
ID=19818291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13071/53A Expired GB730252A (en) | 1952-05-14 | 1953-05-11 | Improvements in or relating to circuit arrangements and discharge tubes for high-frequency amplification |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE519894A (en) |
| DE (1) | DE1060058B (en) |
| FR (1) | FR1103416A (en) |
| GB (1) | GB730252A (en) |
-
0
- BE BE519894D patent/BE519894A/xx unknown
-
1953
- 1953-05-09 DE DEN7170A patent/DE1060058B/en active Pending
- 1953-05-11 GB GB13071/53A patent/GB730252A/en not_active Expired
- 1953-05-13 FR FR1103416D patent/FR1103416A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1103416A (en) | 1955-11-03 |
| BE519894A (en) | |
| DE1060058B (en) | 1959-06-25 |
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