GB500180A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Improvements in and relating to dry surface contact electric rectifiers
Assignee: British Thomson Houston Co Ltd
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Filing: 1938-09-21
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Granted: —
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Expires: 1958-09-21
Abstract
Abstract 500,180. Asymmetrically-conducting resistances. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 21, 1938, No. 27541. Convention date, Sept. 23, 1937. [Class 37] An electric valve of the dry-rectifier type comprises a barrier layer 3, strengthened where it surrounds a control grid 4 embedded in it, to prevent grid emission. The thickened parts can extend into the semi-conductor layer 2, as shown in section in the Figure. The various layers of semi-conductor, the grid bars and the thickened parts of the barrier layer may be produced by a process of vaporization, dusting on &c. using stencils.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-22 19:51
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/01; H10D48/04; H10D99/00
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