CN1021788C - Solid changeover switch - Google Patents
Solid changeover switch Download PDFInfo
- Publication number
- CN1021788C CN1021788C CN 90105137 CN90105137A CN1021788C CN 1021788 C CN1021788 C CN 1021788C CN 90105137 CN90105137 CN 90105137 CN 90105137 A CN90105137 A CN 90105137A CN 1021788 C CN1021788 C CN 1021788C
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- China
- Prior art keywords
- resistance
- connects
- load
- lights
- main
- Prior art date
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- Expired - Fee Related
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Abstract
The present invention relates to a solid automatic switchover contactless switch which belongs to an electric switch. The present invention has the structure that a mutual inductor primary coil is connected in series with a main light or a main load, and an auxiliary light or a spare load is connected with one end of a bidirectional controlled silicon and a rectificative bridge. When the main light or the main load can not work, the auxiliary light and the spare load automatically work, the main light or the main load returns to work when faults are removed, and the auxiliary light or the spare load automatically stops working. The present invention is suitable for traffic signal lights, construction sign sound lights, tunnel lights, beacon lights, mine flameproof lights and subsurface facility lights.
Description
The present invention is a kind of solid changeover switch, belongs to appliance switch.
At present, still there is not this solid automatic transfer switch both at home and abroad, therefore, when often using disintegration of filament or main circuit open fault to occur for a long time because of light fixture as navigation light, identification light, Tunnel Lamp, underground installation lamp and mine explosion lamp etc., illumination is interrupted stops, often leading to a disaster thus.
The purpose of this invention is to provide a kind of can making when major loop filament blow or main circuit load open circuit fault, secondary lamp or standby load are connected automatically, after king light or the eliminating of main circuit load faulty, king light or main load restoration work, the automatic out-of-work automatic transfer switch of secondary lamp or standby load.
The present invention realizes with following technical scheme: AC power one end is connected with major and minor lamp, and the current transformer B primary coil other end is connected with the AC power other end, the primary coil of current transformer B and king light or main load W
1The circuit series connection, the other end and resistance R
2Bidirectional triode thyristor BCR, resistance R
1Connect.Resistance R
2Another termination rectifier bridge D
1One end, bidirectional triode thyristor BCR controlled stage.Rectifier bridge D
3Secondary lamp of one termination or standby load W
2, the bidirectional triode thyristor BCR other end, capacitor C
1One end.Capacitor C
1The other end and resistance R
1Connect.Secondary coil one end and the rectifier bridge D of instrument transformer B
4One end, capacitor C
2One end, triode BG
1Emitter, small thyristor CR negative electrode connects, the secondary coil other end and diode D
5Anode connects, diode D
5Negative electrode and capacitor C
2, resistance R
3One end connects.Resistance R
3The other end and triode BG
1Base stage connects, triode BG
1Collector electrode and resistance R
4One end, the control utmost point of small thyristor CR connects, resistance R
4The anode of the other end and small thyristor CR, rectifier bridge D
2One end connects.
Current transformer B primary coil is series at king light or main load circuit, when king light or main load connection, produces AC signal by secondary coil, through diode D
5Rectification, capacitor C
2Filtering, resistance R
3Current limliting is added in triode BG
1Base stage makes its conducting, and small thyristor CR closes owing to controlling the utmost point and negative electrode short circuit.The bidirectional triode thyristor BCR of secondary lamp or standby load circuit is ended, and secondary lamp or standby load are not worked.When main circuit filament or main load circuit open circuit, the elementary no current of current transformer B flows through, secondary also no current output, triode BG
1Inject and to end because of can not get electric current, by the pulsating dc voltage of rectifier bridge output through resistance R
4Be added to the control utmost point of small thyristor CR.Make its conducting, trigger bidirectional triode thyristor BCR conducting, secondary lamp or standby loaded work piece, after connection was fixed in major loop lamp or main load, B level of current transformer restoring signal was exported triode BG
1Conducting.Small thyristor CR ends, and bidirectional triode thyristor BCR turn-offs once again, and secondary lamp or standby load quit work.
It is little that the present invention has power consumption, and switching speed is fast, the life-span is long, do not produce spark, the shortcoming of the oxidation that does not have mechanical contacts, corrosion, loose contact, has waterproof, moistureproof outstanding advantage simultaneously.
Now in conjunction with the accompanying drawings the present invention is described in further detail.
Fig. 1 is circuit theory diagrams of the present invention.
Fig. 2 is external form figure of the present invention.
Fig. 1～2nd, the specific embodiment of the invention, AC power one end is connected with major and minor lamp, and the primary winding other end of current transformer B is connected with the AC power other end.The primary coil of current transformer B and king light W
1Series connection, the other end and resistance R
2, bidirectional triode thyristor BCR, resistance R
1Connect.Resistance R
2Another termination rectifier bridge D
1One end, bidirectional triode thyristor BCR controls the utmost point.Rectifier bridge D
3The secondary lamp W of one termination
2, while and capacitor C
1One end, the bidirectional triode thyristor BCR other end connects, capacitor C
1The other end and resistance R
1Connect secondary coil one end and the rectifier bridge D of instrument transformer B
4One end, capacitor C
2One end, triode BG
1Emitter, small thyristor CR negative electrode connects.The secondary coil other end and diode D
5Anode connect diode D
5Negative electrode and capacitor C
2, resistance R
3One end connects.Resistance R
3The other end and triode BG
1Base stage connects, triode BG
1Collector electrode and resistance R
4One end, the control utmost point of small thyristor CR connects, resistance R
4The anode of the other end and little control silicon CR, rectifier bridge D
2One end connects.
Claims (1)
1, a kind of solid automatic switchover noncontacting switch, it is characterized in that, AC power one end is connected with major and minor lamp, the current transformer B primary coil other end is connected with the AC power other end, it is characterized in that primary coil and king light or the main load W of current transformer B
1Series connection, the other end and resistance R
2, bidirectional triode thyristor BCR, resistance R
1Connect; Resistance R
2Another termination rectifier bridge D
1One end, bidirectional triode thyristor BCR controls the utmost point; Rectifier bridge D
3Secondary lamp of one termination or standby load, the bidirectional triode thyristor BCR other end, capacitor C
1One end; Capacitor C
1The other end and resistance R
1Connect secondary coil one end and the rectifier bridge D of instrument transformer B
4One end, capacitor C
2One end, triode BG
1Emitter, small thyristor CR negative electrode connects, the secondary coil other end and diode D
5Anode connects, diode D
5Negative electrode with hold C
2, resistance R
3One end connects, resistance R
3The other end and triode BG
1Base stage connects, triode BG
1Collector electrode and resistance R
4One end, the control utmost point of small thyristor CR connects, resistance R
4The anode of the other end and small thyristor, rectifier bridge D
2One end connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105137 CN1021788C (en) | 1990-06-05 | 1990-06-05 | Solid changeover switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105137 CN1021788C (en) | 1990-06-05 | 1990-06-05 | Solid changeover switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1057153A CN1057153A (en) | 1991-12-18 |
| CN1021788C true CN1021788C (en) | 1993-08-11 |
Family
ID=4878970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90105137 Expired - Fee Related CN1021788C (en) | 1990-06-05 | 1990-06-05 | Solid changeover switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1021788C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252226B (en) | 2011-04-14 | 2013-01-09 | 深圳市华星光电技术有限公司 | Light-emitting diode (LED) component and LED light string adopting same |
| CN102752945A (en) * | 2012-06-15 | 2012-10-24 | 无锡市市北高级中学 | Emergency lighting device |
| CN102984871A (en) * | 2012-12-24 | 2013-03-20 | 徐州工业职业技术学院 | Automatic switching illumination device |
| CN110875159B (en) * | 2018-08-30 | 2022-04-22 | 贵州振华群英电器有限公司（国营第八九一厂） | Composite direct current switch capable of being physically disconnected and switching method |
-
1990
- 1990-06-05 CN CN 90105137 patent/CN1021788C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1057153A (en) | 1991-12-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |