GB735053A - Improvements in and relating to electrical circuits incorporating cold cathode gas discharge tubes - Google Patents
Improvements in and relating to electrical circuits incorporating cold cathode gas discharge tubesInfo
- Publication number
- GB735053A GB735053A GB2114152A GB2114152A GB735053A GB 735053 A GB735053 A GB 735053A GB 2114152 A GB2114152 A GB 2114152A GB 2114152 A GB2114152 A GB 2114152A GB 735053 A GB735053 A GB 735053A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- contact
- coil
- gas discharge
- resistance
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/093—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current with timing means
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/012—Automatic controllers electric details of the transmission means
- G05B11/013—Automatic controllers electric details of the transmission means using discharge tubes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
735,053. Protective cut-out arrangements. ENGLISH ELECTRIC CO., Ltd. Aug. 14, 1953 [Aug. 22, 1952], No. 21141/52. Class 38 (5). [Also in Group XL (c)] An electronic circuit, particularly for an overload protective arrangement, comprises a gridoperated gas discharge tube of the cold-cathode type to which a signal is applied to cause operation of the tube, the circuit then responding to effect de-ionization and re-operation of the tube. The signal is supplied from a current transformer 4, over a rectifier 3 to a resistance 7, the potential across which is applied to the grid 12 of the tube, which discharges when the potential reaches a certain value. This causes a coil 17 to open a contact 18 and disconnect a resistance 19 and to change over a contact 11 to connect a condenser 9, of a resistance capacitance circuit 8, 9 to the grid. A relay 6 is thereby energized to close its contact 10 and energize a coil 20, and maintain energization of relay 17. The movement of contact 16 by coil 20 is delayed so that de-ionization of the tube is complete before it makes its left-hand contact. If the P.D. across condenser 9 remains high, the tube discharges again, to energize a trip coil 21 and remove the H.T. supply 15 by means not shown. Specification 732,454 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2114152A GB735053A (en) | 1952-08-22 | 1952-08-22 | Improvements in and relating to electrical circuits incorporating cold cathode gas discharge tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2114152A GB735053A (en) | 1952-08-22 | 1952-08-22 | Improvements in and relating to electrical circuits incorporating cold cathode gas discharge tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB735053A true GB735053A (en) | 1955-08-10 |
Family
ID=10157889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2114152A Expired GB735053A (en) | 1952-08-22 | 1952-08-22 | Improvements in and relating to electrical circuits incorporating cold cathode gas discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB735053A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3122659A (en) * | 1961-10-04 | 1964-02-25 | Siemens Ag | Switching device for disconnection of a load from a direct-current supply |
-
1952
- 1952-08-22 GB GB2114152A patent/GB735053A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3122659A (en) * | 1961-10-04 | 1964-02-25 | Siemens Ag | Switching device for disconnection of a load from a direct-current supply |
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