GB487466A - Improvements in and relating to valve circuit arrangements for automatic limitation of the duration of an electrical process - Google Patents
Improvements in and relating to valve circuit arrangements for automatic limitation of the duration of an electrical processInfo
- Publication number
- GB487466A GB487466A GB2229037A GB2229037A GB487466A GB 487466 A GB487466 A GB 487466A GB 2229037 A GB2229037 A GB 2229037A GB 2229037 A GB2229037 A GB 2229037A GB 487466 A GB487466 A GB 487466A
- Authority
- GB
- United Kingdom
- Prior art keywords
- duration
- electrical process
- relating
- grids
- valves
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
- H05G1/30—Controlling
- H05G1/38—Exposure time
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- X-Ray Techniques (AREA)
Abstract
487,466. Valve relay circuits. GUNSTONE, A. C., and NEMET, A. Aug. 13, 1937, No. 22290. [Class 40 (v)] [Also in Group XXXV] The duration of an electrical process such as the energization of X-ray tube circuits is determined by the charging or discharging time of a resistance-condenser network CR associated with the grid circuit of an auxiliary valve AV, the striking or energisation of which completes a circuit whereby a high negative bias is applied to the grids of the main gas-discharge gridcontrolled valves MV to extinguish them and operate a contactor by means of the contactor relay winding b. Switches S1, S2 are opened to commence the operation of the device ; the prohibitive bias on AV due to condenser C leaks away across resistance R until AV strikes ; the grids of valves MV are then virtually connected to the cathode potential of AV thus imposing a very high negative bias on MV to cut off the anode current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2229037A GB487466A (en) | 1937-08-13 | 1937-08-13 | Improvements in and relating to valve circuit arrangements for automatic limitation of the duration of an electrical process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2229037A GB487466A (en) | 1937-08-13 | 1937-08-13 | Improvements in and relating to valve circuit arrangements for automatic limitation of the duration of an electrical process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB487466A true GB487466A (en) | 1938-06-21 |
Family
ID=10176987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2229037A Expired GB487466A (en) | 1937-08-13 | 1937-08-13 | Improvements in and relating to valve circuit arrangements for automatic limitation of the duration of an electrical process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB487466A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1176761B (en) * | 1962-08-27 | 1964-08-27 | Philips Nv | Circuit arrangement for controlling a gas discharge tube |
-
1937
- 1937-08-13 GB GB2229037A patent/GB487466A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1176761B (en) * | 1962-08-27 | 1964-08-27 | Philips Nv | Circuit arrangement for controlling a gas discharge tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB487982A (en) | Improvements in or relating to short-time switches operating with the aid of controlled current converters | |
| GB545123A (en) | Improvements in or relating to electron multiplier apparatus | |
| GB487466A (en) | Improvements in and relating to valve circuit arrangements for automatic limitation of the duration of an electrical process | |
| US2274369A (en) | Electrical control system | |
| US2475197A (en) | High-tension switching means | |
| US2259329A (en) | Protective system for vapor electric devices | |
| US2259295A (en) | Protective system for vapor electric devices | |
| GB549125A (en) | Improvements in and relating to electrical control systems employing vacuum tubes operating with secondary emission | |
| GB522808A (en) | Improvements in thermionic time delay circuits | |
| GB568684A (en) | Improvements relating to frequency-changers for superheterodyne radio receivers and the like | |
| US1945830A (en) | Motor controller | |
| GB720188A (en) | Improvements in or relating to a carry circuit for a parallel accumulator | |
| GB398498A (en) | Improvements in and relating to electric power converting apparatus | |
| GB457340A (en) | Circuit system with one or more discharge tubes, and discharge tubes for use in such systems | |
| GB909720A (en) | Improvements in or relating to ignition and excitation arrangements for single anodemetal-vapour discharge valves | |
| GB390309A (en) | Improvements in or relating to the control of circuits by means of electron tubes | |
| GB498210A (en) | Improvements in and relating to electric valve circuits | |
| GB450986A (en) | Improvements in thermionic and like time-base circuits | |
| GB552063A (en) | Improvements in or relating to electrical impulse transmission | |
| GB462885A (en) | Improvements in television receiving apparatus | |
| GB632168A (en) | Improvements in or relating to electrical circuits and electronic tubes employed therein | |
| GB570601A (en) | Improvements in and relating to photo-electric cells and to control circuits incorporating such cells | |
| GB689953A (en) | Improvements in or relating to a therapy x-ray tube supply system | |
| GB675470A (en) | Ageing electron discharge tubes having space charge grids | |
| GB539490A (en) | Improvements in or relating to electron discharge arrangements employing electron beams |