GB1384452A - Magnetically focused grid-controlled valves - Google Patents
Magnetically focused grid-controlled valvesInfo
- Publication number
- GB1384452A GB1384452A GB972972A GB972972A GB1384452A GB 1384452 A GB1384452 A GB 1384452A GB 972972 A GB972972 A GB 972972A GB 972972 A GB972972 A GB 972972A GB 1384452 A GB1384452 A GB 1384452A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grid
- valve
- anode
- coil
- plates
- 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
- H01J21/00—Vacuum tubes
- H01J21/02—Tubes with a single discharge path
- H01J21/18—Tubes with a single discharge path having magnetic control means; having both magnetic and electrostatic control means
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
1384452 Thermionic valves STANDARD TELEPHONES & CABLES Ltd 2 March 1972 9729/72 Heading HID An arrangement comprises a thermionic grid controlled power valve and a permanent magnet structure arranged to produce a magnetic focusing field, a part of the structure being movable to vary the power output and minimize grid current. A valve as described in Specification 1,195,703 comprises an array of filamentary cathodes 10 between grid plates 4 or aligned sets of rods within an anode 11. Additional rods between the plates 12 and anode form a second grid. The valve surrounded by a water cooling jacket is mounted between polepieces 27, 28 of an assembly including, two U-shaped members 30, 31 secured to a base 32. The field is varied by moving plates 24, 35 which extend through slots in the base using a gear-wheel on spindle 41. The valve is arranged in a tuned anode coupled grid oscillator circuit for induction heating. The circuit comprises a work coil L3 in series with an anode tank coil L2 coupled to a feed-back coil L1. The D.C. return comprises a choke L5 and resistor R1. Coil L2 and capacitor C2 are watercooled.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB972972A GB1384452A (en) | 1972-03-02 | 1972-03-02 | Magnetically focused grid-controlled valves |
| DE19732309766 DE2309766A1 (en) | 1972-03-02 | 1973-02-27 | THERMIONIC ELECTRON TUBE |
| US00336656A US3826945A (en) | 1972-03-02 | 1973-02-28 | Adjustable magnetically focused triode |
| FR7307319A FR2174233B3 (en) | 1972-03-02 | 1973-03-01 | |
| JP48024425A JPS48102970A (en) | 1972-03-02 | 1973-03-02 | |
| NL7303014A NL7303014A (en) | 1972-03-02 | 1973-03-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB972972A GB1384452A (en) | 1972-03-02 | 1972-03-02 | Magnetically focused grid-controlled valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1384452A true GB1384452A (en) | 1975-02-19 |
Family
ID=9877645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB972972A Expired GB1384452A (en) | 1972-03-02 | 1972-03-02 | Magnetically focused grid-controlled valves |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1384452A (en) |
-
1972
- 1972-03-02 GB GB972972A patent/GB1384452A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
| PCNP | Patent ceased through non-payment of renewal fee |