CN2354306Y - Preheated type electronic ballast - Google Patents
Preheated type electronic ballast Download PDFInfo
- Publication number
- CN2354306Y CN2354306Y CN 98222850 CN98222850U CN2354306Y CN 2354306 Y CN2354306 Y CN 2354306Y CN 98222850 CN98222850 CN 98222850 CN 98222850 U CN98222850 U CN 98222850U CN 2354306 Y CN2354306 Y CN 2354306Y
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- China
- Prior art keywords
- circuit
- electronic ballast
- relay
- capacitor
- preheating
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- Expired - Fee Related
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Abstract
The utility model relates to the electric appliance field, particularly an electronic ballast used on fluorescent lamps. The electronic ballast is provided with a filter circuit, an oscillating circuit, a load resonant circuit and a preheating circuit. The electronic ballast adopts a relay to control, regulates preheating time through a PTC, and controls the preheating current through a capacitor. The working process of the electronic ballast is divided into preheating and starting two states; the early ageing of the lamp tube is effectively prevented. The utility model has the advantages of simple structure, compact structure, low manufacture cost and high reliability, effectively prolongs the lifetime of the lamp tube, and is suitable for being used on various fluorescent lamps.
Description
The utility model relates to appliance field, the electric ballast that uses on specifically a kind of fluorescent lamp.
According to the knowledge of the applicant, electric ballast in the market mainly contains two kinds, and a kind of is non-pipeline start up by preheating mode, and another kind is to adopt the pipeline start up by preheating mode, but all there is bigger scarce limit in these two kinds of ballasts, though the ballast of non-pipeline start up by preheating has the filament heating function, the high pressure when electric current and startup is to produce synchronously, and pre-heat effect is not obvious, starting state is undesirable, cause lamp tube service life very short, general 1,000 fluorescent tubes of switch seriously turn black, and 5,000 times filament will blow.The ballast of pre-heated startup often thermistor resistance changes lengthening start-up time that causes fluorescent tube continuously, and preheating is insufficient and starting state is undesirable, thereby causes fluorescent tube premature ageing blackout, and lamp tube service life is shortened.A kind of fluorescent-lamp-use high-frequency electronic ballast is disclosed as patent CN2124539U, it is in common electronic ballast circuit, insert the lamp works situation and surveyed transformer, two primary winding series connection of this transformer insert the end of incoming cables and the leading-out terminal of the arbitrary head lamp silk of fluorescent lamp, and magnetic potential is offseted in magnetic core.The lamp works state reacts by the signal that produces on the transformer auxiliary winding, utilizes above-mentioned signal to control fluorescent tube preheat circuit or abnormal condition of lamp tube protective circuit, thereby has realized to the tube filament preheat requirements and to the protection of abnormal condition of lamp tube working condition.But its complex structure, pre-heat effect is not good enough, and starting state is undesirable, can not realize the purpose of inventing well.
The purpose of this utility model is intended to overcome the deficiency of above-mentioned prior art, provides a kind of filament pre-heating that can make abundant, starting state ideal, the pre-heated electric ballast of fluorescent tube long service life.
For achieving the above object, a kind of pre-heated electric ballast, it establishes filter circuit, oscillating circuit, load resonant circuit, it is characterized in that it also is provided with preheat circuit, preheat circuit is provided with capacitor C, capacitor C 5, relay J, thermistor PTC, thermistor PTC be serially connected in again in the electric power loop after relay J is connected, the normal-closed end of relay J links to each other with a capacitor C 5, connect with filament in its Chang Kaiduan and the capacitor C back that links.
The utility model is reasonable in design, and is simple in structure, in the course of the work, can be to the abundant preheating of filament, and be provided with high pressure when starting, switch disconnects preheat circuit suddenly behind the certain hour, produce a very high pulse voltage, fluorescent tube is started, thereby prolonged the useful life of fluorescent tube.
Below in conjunction with accompanying drawing the utility model is described further
Fig. 1 is the utility model structural representation, also is the embodiment schematic diagram.
As can be seen from Figure 1, a kind of pre-heated electric ballast, it establishes current rectifying and wave filtering circuit, oscillating circuit, load resonant circuit.Wherein current rectifying and wave filtering circuit is by rectifier bridge, C3, C2 constitutes, oscillating circuit is mainly by KJ, K2, R1, R3-R6, R5, R8, R-1, R-2, R9, formations such as R10, load resonant circuit is by C4, C7, R, L2, compositions such as TB, the composition of foregoing circuit all belongs to prior art with effect, this does not describe in detail, be serially connected with preheat circuit 4 between the utility model oscillating circuit and the load resonant circuit, preheat circuit 4 is by capacitor C 5, capacitor C, relay J, voltage-stabiliser tube 2 and thermistor PTC, relay switch J ' constitutes, thermistor PTC be serially connected in the electric power loop again after relay J is connected, the coil of relay is in parallel with voltage-stabiliser tube 2, normal-closed end and the capacitor C 5 of the switch J ' of relay J link, its Chang Kaiduan links with capacitor C and then connects with filament, the control of employing relay J, PTC regulates warm-up time by thermistor, controls preheat curent by capacitor C.When connecting with the mains, the actuating of relay is connected in the filament loop capacitor C, to filament pre-heating, because of the resistance of thermistor PTC increases, the electric current by relay coil reduces behind the certain hour, and relay quits work, preheat circuit is disconnected, finish preheating and light fluorescent tube.
The utility model is simple in structure, compactness, and cost is low, and the reliability height has greatly prolonged lamp tube service life, is suitable for various fluorescent lamps and uses.
Claims (2)
1, a kind of pre-heated electric ballast, it establishes filter circuit, oscillating circuit, load resonant circuit, it is characterized in that it also is provided with preheat circuit, preheat circuit is made of capacitor C, capacitor C 5, relay J, thermistor PTC, thermistor PTC be serially connected in the electric power loop again after relay J is connected, the normal-closed end of relay links to each other with a capacitor C 5, and its Chang Kaiduan links with capacitor C and then connects with filament.
2, a kind of pre-heated electric ballast according to claim 1 is characterized in that the coil of the relay in the said preheat circuit is in parallel with voltage-stabiliser tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98222850 CN2354306Y (en) | 1998-11-03 | 1998-11-03 | Preheated type electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98222850 CN2354306Y (en) | 1998-11-03 | 1998-11-03 | Preheated type electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2354306Y true CN2354306Y (en) | 1999-12-15 |
Family
ID=33974085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98222850 Expired - Fee Related CN2354306Y (en) | 1998-11-03 | 1998-11-03 | Preheated type electronic ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2354306Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787710B (en) * | 2004-12-08 | 2010-10-27 | 上海贝岭股份有限公司 | Starting controlling circuit for inductive type fluorescent lamp |
| CN105578693A (en) * | 2015-12-29 | 2016-05-11 | 淄博中诚电子照明技术开发有限公司 | Ballast filament preheating control circuit for high-power ultraviolet lamp |
-
1998
- 1998-11-03 CN CN 98222850 patent/CN2354306Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787710B (en) * | 2004-12-08 | 2010-10-27 | 上海贝岭股份有限公司 | Starting controlling circuit for inductive type fluorescent lamp |
| CN105578693A (en) * | 2015-12-29 | 2016-05-11 | 淄博中诚电子照明技术开发有限公司 | Ballast filament preheating control circuit for high-power ultraviolet lamp |
| CN105578693B (en) * | 2015-12-29 | 2018-10-02 | 淄博中诚电子照明技术开发有限公司 | A kind of high-power ultraviolet ballast for lamp filament pre-warming control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |