GB1004331A - Overload protection for transistor power oscillators - Google Patents
Overload protection for transistor power oscillatorsInfo
- Publication number
- GB1004331A GB1004331A GB220462A GB220462A GB1004331A GB 1004331 A GB1004331 A GB 1004331A GB 220462 A GB220462 A GB 220462A GB 220462 A GB220462 A GB 220462A GB 1004331 A GB1004331 A GB 1004331A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oscillator
- relay
- frequency
- overload protection
- transistor power
- 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
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
1,004,331. Transistor oscillator circuits. ERICSSON TELEPHONES Ltd. March 20, 1963 [Jan. 22, 1962], No. 2204/62. Heading H3T. [Also in Division H2] A transistor power oscillator 10 includes means for shutting down the oscillator in response to an increase in oscillation frequency. As described, the means is a series resonant circuit comprising a capacitor 17 and a relay A, the resonant frequency of the circuit being higher than the frequency of oscillation of the oscillator. If the load 16 increases the oscillation frequency and hence the current through relay A, increases until relay A operates, releasing relay B to disconnect the supply to the oscillator, and also operating an alarm (not shown). Power may be restored by actuation of key 24 to re-energize relay B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB220462A GB1004331A (en) | 1962-01-22 | 1962-01-22 | Overload protection for transistor power oscillators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB220462A GB1004331A (en) | 1962-01-22 | 1962-01-22 | Overload protection for transistor power oscillators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1004331A true GB1004331A (en) | 1965-09-15 |
Family
ID=9735414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB220462A Expired GB1004331A (en) | 1962-01-22 | 1962-01-22 | Overload protection for transistor power oscillators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1004331A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2214011A (en) * | 1987-11-12 | 1989-08-23 | M C M Tectronics Limited | Continuous monitoring of electronic equipment |
| CN110784176A (en) * | 2018-07-31 | 2020-02-11 | 慧荣科技股份有限公司 | Oscillator device |
-
1962
- 1962-01-22 GB GB220462A patent/GB1004331A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2214011A (en) * | 1987-11-12 | 1989-08-23 | M C M Tectronics Limited | Continuous monitoring of electronic equipment |
| CN110784176A (en) * | 2018-07-31 | 2020-02-11 | 慧荣科技股份有限公司 | Oscillator device |
| CN110784176B (en) * | 2018-07-31 | 2023-03-28 | 慧荣科技股份有限公司 | Oscillator device |
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