GB630075A - Improvements relating to thermionic valve control circuits - Google Patents
Improvements relating to thermionic valve control circuitsInfo
- Publication number
- GB630075A GB630075A GB2050846A GB2050846A GB630075A GB 630075 A GB630075 A GB 630075A GB 2050846 A GB2050846 A GB 2050846A GB 2050846 A GB2050846 A GB 2050846A GB 630075 A GB630075 A GB 630075A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- cut
- gating
- grid
- cathode
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C15/00—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
- G08C15/06—Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/54—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements of vacuum tubes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Thyristors (AREA)
- Electronic Switches (AREA)
Abstract
630,075. Valve circuits. SCOLES, G. J., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. July 9, 1946, No. 20508. [Class 40 (vi)] A gating valve is associated with two or more control valves which are controlled by voltages applied to their grid circuits to vary the cathode bias of the gating valve to cause it to pass or to cut-off signals applied to its grid circuit. The circuit is such that the gating valve only passes signals when all of the control valves are conditioned to render it conductive. Fig. 1 shows a gating valve V3, which is normally cut-off by the bias voltage developed across the cathode resistor R1 by the passage through it of the cathode current of one of the two control valves V1, V2. The three valves are arranged so that each control valve is capable of rendering the gating valve inoperative and that the gating valve conducts only when two given signals are applied simultaneously to the control valves. Fig. 3 shows an arrangement in which a. positivegoing sawtooth voltage from a time-base is applied to two strobing circuits comprising valves V4, V5 and V7, V8. Valve V4, which is normally cut-off by the voltage across cathode bias resistor R7, is rendered conducting and a negative-going signal as shown in curve a of Fig. 4 is applied to the grid of control valve V1. Valve V7, which is similarly normally cut-off, is rendered conducting, valve V8 is cut-off, and a positive-going signal as shown in curve b of Fig. 4 is applied to the grid of control valve'V2. Thus valve V1; which normally has a positive grid bias, is cut-off, the voltage drop across cathode resistor R1 is reduced and the gating valve V3 conducts at instant T1, the anode voltage dropping as shown in curve c of Fig. 7. Valve V2, which is normally cut-off by the residual negative charge on capacitor C4, is rendered conductive at instant T2 by the positive signal from valve. V8, and the gating valve is cut-off again at this instant. D.C. restoring diodes V9, V10 are connected between grid and cathode of each control valve.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR964517D FR964517A (en) | 1946-07-09 | ||
| GB2050846A GB630075A (en) | 1946-07-09 | 1946-07-09 | Improvements relating to thermionic valve control circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2050846A GB630075A (en) | 1946-07-09 | 1946-07-09 | Improvements relating to thermionic valve control circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB630075A true GB630075A (en) | 1949-10-05 |
Family
ID=10147046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2050846A Expired GB630075A (en) | 1946-07-09 | 1946-07-09 | Improvements relating to thermionic valve control circuits |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR964517A (en) |
| GB (1) | GB630075A (en) |
-
0
- FR FR964517D patent/FR964517A/fr not_active Expired
-
1946
- 1946-07-09 GB GB2050846A patent/GB630075A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR964517A (en) | 1950-08-18 |
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