CN2673031Y - Abnormal state protector of self restoration electronic ballast - Google Patents
Abnormal state protector of self restoration electronic ballast Download PDFInfo
- Publication number
- CN2673031Y CN2673031Y CN 200420014406 CN200420014406U CN2673031Y CN 2673031 Y CN2673031 Y CN 2673031Y CN 200420014406 CN200420014406 CN 200420014406 CN 200420014406 U CN200420014406 U CN 200420014406U CN 2673031 Y CN2673031 Y CN 2673031Y
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- circuit
- fluorescent tube
- relay
- triode
- lamp
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Abstract
The utility model relates to an abnormal-state protection apparatus of self-recovering electronic ballast, comprising a sampling circuit, a control circuit, a lamp tube output opening and breaking circuit and a sustaining circuit. When the lamp is in the abnormal state of non-starting, the fluorescent lamp is quickly stopped and sustained, and the damaged fluorescent tube is dismounted for keeping the circuit disconnected. The lamp can work as normal after the lamp tube is changed with a perfect one. When one electronic ballast uses two or more lamp tubes, the lamp tube A is damaged for protecting the lamp tube A circuit, and the lamp tube B is damaged for protecting the lamp tube B circuit; the normal work of other lamp tubes can not be affected; simultaneously, the horsepower of the rest lamp tubes for continue work can be adjusted effectively, which can ensure the lamp tubes for continue working within the rated operating range.
Description
Technical field
The utility model relates to a kind of electron ballast abnormality state protection technology, especially electronic ballast for fluorescent lamps abnormal condition protection technology.
Background technology
The output operating frequency of electric ballast is generally more than 20Khz; and fluorescent lamp is worked under high frequency and can be improved system's light efficiency about 30%; it is the important technique measure of energy-saving illumination; therefore the development of electronic ballast for fluorescent lamps and production just are subjected to extensive attention both domestic and external from the eighties; in two standards of IEC928, IEC929 of International Electrotechnical Commission's promulgation, automatic protection has all proposed corresponding requirement to the electron ballast abnormality state.Abnormality described in the related standards is mainly following two kinds: a kind of is the lamp open circuit, and another kind is that lamp does not start.Be equivalent to resonant tank and be cut off under the lamp open-circuit condition, at this moment electric ballast can not be damaged.Lamp not starting state normally causes because of fluorescent tube is aging or the gas leakage filament is intact again.Because at this moment the transistor operating current in the electric ballast is much larger than running current, so the time may be burnt transistor once long.In order to prevent the generation of this phenomenon, usually the abnormality automatic safety device to be set in electric ballast.The Electronic Protection circuit of substantially all forming that electric ballast adopted that has at present the abnormal condition protection device on the market by transistor; shown in Figure 1 is a kind of reliable abnormal state protection circuit; be characterized in that driving transformer (T) increases a winding (Td); under the normality, the current potential deficiency of resitstance voltage divider (M) point makes Zener diode puncture conducting.Controllable silicon (SCR) turn-offs, once abnormality occurs, (P) certainly leads to a very high electromotive force, needs only M point current potential and reaches 10V, and Zener diode is with regard to conducting, makes the SCR conducting that is triggered.The electric current that winding (Td) produces arrives ground by speed-sensitive switch diode and SCR, and the switch-off power switching transistor quits work switching circuit simultaneously.At this moment, if take off the fluorescent tube of damage, change intact fluorescent tube again, because abnormal state protection circuit still is in the protection operating state, so fluorescent tube can not be lighted, reclose power supply again after having only power cutoff, electric ballast just can be reworked.If two or two above fluorescent tubes of a ballast load, so, as long as there is a fluorescent tube to break down, electric ballast is protected immediately, and the fluorescent tube of institute's load extinguishes immediately, the user is used cause bad influence.
The utility model content
The purpose of this utility model is to provide a kind of abnormal condition protection device; after fluorescent tube lamp occurs and does not start abnormality; tube circuit cut-offs; fluorescent tube quits work; change behind the intact fluorescent tube again operate as normal immediately, when a ballast used two or two above fluorescent tubes, the A fluorescent tube damaged protection A tube circuit; all the other fluorescent tubes pass through to regulate endure automatically in the rated power scope, thereby guarantee the safe handling of electric ballast and all the other fluorescent tubes.
The purpose of this utility model is to realize by following technical measures: the fluorescent lamp abnormal condition protection device by sample circuit, control circuit, circuit is cut-off in fluorescent tube output and holding circuit is formed.When lamp lamp occurs and does not start abnormality, sample circuit makes the control circuit action, the relay adhesive, the normally opened contact tripping disconnects the fluorescent lamp output loop, fluorescent lamp is quit work, meanwhile, because the relay normally open contact closure, holding circuit adds to control circuit with electric ballast input circuit voltage, make relay keep adhesive, continue to disconnect the fluorescent lamp output circuit.When taking out the fluorescent tube that damages; disconnection electric ballast output major loop is connected with control circuit; relay is discharged, change intact fluorescent tube after, fluorescent lamp again can operate as normal; when two of uses or two above fluorescent tubes; relay is owing to two groups of contacts of employing, thereby except that reaching above-mentioned defencive function, another group normally-closed contact of relay cut-offs regulates inductance (L); make power adjusted, thereby guarantee that remaining fluorescent tube can be operated within the fluorescent tube rated power scope.
The utility model is compared with existing technologies, has the following advantages:
1. cut-off circuit owing to adopted the relay normally-closed contact to do fluorescent tube output; just to the tube circuit effect; pull down the damage fluorescent tube; after changing intact fluorescent tube again; can work immediately; avoided turn-offing when abnormality appears in fluorescent tube in the prior art electric ballast power switch transistor; switching circuit is quit work; if pull down the damage fluorescent tube; change intact fluorescent tube again, because abnormal condition protection still makes switching circuit be in the state of quitting work, so this moment, fluorescent tube can not be lighted; reclose power supply again after having only power cutoff, electric ballast is the weak point of the energy normal work first month of the lunar year.
2. when two of electric ballast uses or two above fluorescent tubes, wherein the abnormality phenomenon appears in the A fluorescent tube, turn-off the A tube circuit, the abnormality phenomenon appears in the B fluorescent tube, turn-off the B tube circuit, can not influence the operate as normal of electric ballast, as long as when having avoided prior art to have a tubes abnormality to occur, the electric ballast switching circuit quits work, and all out-of-work defective of all fluorescent tubes.
Description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the electrical schematic diagram of electron ballast abnormality state protection device on the market.
Fig. 2 is the electrical schematic diagram of the utility model electron ballast abnormality state protection device.
Fig. 3 is the electrical schematic diagram of the another kind of connection of the utility model holding circuit.
Fig. 4 is the electrical schematic diagram that ballast of the utility model uses two or two above fluorescent tubes.
Fig. 5 is that two of ballast uses of the utility model or two above fluorescent tubes have the electrical schematic diagram that fluorescent tube is regulated power functions automatically.
Embodiment
As shown in Figure 2; electron ballast abnormality state protection device by sample circuit (1), control circuit (2), circuit (3) is cut-off in fluorescent tube output and holding circuit (4) is formed; the collector electrode of control circuit (2) triode (V1), (V2), (V3) is connected on the positive pole of electric ballast by resistance (R4), (R5), (R6); (V1), (V2) emitter is connected on the negative pole of electric ballast; the base stage of triode (V2) is connected with the collector electrode of triode (V1), and the base stage of triode (V3) is connected with the collector electrode of triode (V2).The emitter of triode (V3) is connected on the negative pole of electric ballast by the coil of relay (J1).The normally-closed contact (J1-B) that is connected to relay (J1) on fluorescent tube (Rf1) output circuit of electric ballast constitutes fluorescent tube output and cut-offs circuit, the output circuit of fluorescent tube also is connected on the base resistance (R3) of control circuit (2) triode (V1) by normally opened contact (J1-K) diode (D2) of relay (J1) by the output circuit that resistance (R1) is connected on fluorescent tube, constitute holding circuit, the sampling current potential is to take out at the tie point (9) of electric ballast outputting inductance (L1) with the fluorescent tube input circuit, by diode (D1), resistance (R2), resistance (R7) is received on the electric ballast negative pole, forms divider resistance.Divider resistance node (M), diode (D2), trigger tube (DW) are connected on the base resistance (R3) of control circuit (2) triode (V1), shunt capacitance (C2) on the contact of diode (D5) and diac (DW), on the link node of triode (V1) base resistance (R3) of diac (DW) and control circuit (2), electrochemical capacitor in parallel (3) constitutes sample circuit.Sample circuit can also adopt embodied in other.When electric ballast normally used, (M) some current potential deficiency was so that diac (DW) punctures conducting, and control circuit (2) triode (V1) ends because of the base stage no-voltage, triode (V2) conducting, and triode (V3) ends, not adhesive of relay (J1).In case abnormality occurs, (P) certainly lead to a very high electromotive force, reach trigger voltage as long as (M) put current potential, diac (DW) is with regard to conducting, trigger voltage is by the base stage of resistance (R3) to control circuit (2) triode (V1), make its conducting, (V2) end, (V3) conducting, relay (J1) adhesive, the fluorescent tube output circuit is cut-off in the tripping rapidly of the normally-closed contact (J1-B) of relay (J1), and fluorescent tube is quit work.Meanwhile, normally opened contact (J1-K) closure of relay (J1), electric ballast (P) some current potential is by fluorescent tube (Rf1) input circuit, resistance (R1), the normally opened contact (J1-K) of output circuit relay (J1), diode (D3) is added on the base resistance R3 of control circuit (2) triode (V1), makes triode (V1) continue to keep conducting state, and relay (J1) keeps adhesive.Fluorescent tube (Rf1) continues to quit work, if change the fluorescent tube of damage, then cut-off electric ballast (P) some current potential and be connected with the base stage of control circuit (2) triode (V1), triode (V1) has been ended, (V2) conducting by holding circuit (4), (V3) end, relay (J1) discharges, normally-closed contact (J1-B) closure of relay (J1), at this moment, change intact fluorescent tube, fluorescent tube again can operate as normal.
Fig. 3 is the another kind of connection of the resistance R 1 of the utility model electron ballast abnormality state protection device holding circuit; after resistance (R1) is connected in parallel with resonant capacitance (C1); be connected in the fluorescent tube resonant tank, its effect is the same with being attempted by the fluorescent tube input with output.
Fig. 4 is the electrical schematic diagram that electric ballast of the utility model uses two or two above fluorescent tubes.As shown in the figure; it is that cover abnormal condition protection device of the present utility model is set in the every tubes circuit of electric ballast; and the principle of every cover abnormal condition protection device described with Fig. 2 be the same; when the abnormality phenomenon appears in (Rf1) fluorescent tube; (Rf1) the abnormal condition protection device effect of tube circuit; stop (Rf1) lamp works; when (Rf2) the abnormality phenomenon appears in fluorescent tube; (Rf2) the abnormal condition protection device effect of tube circuit; stop (Rf2) lamp works and can not influence the operate as normal of electric ballast; after changing intact fluorescent tube, can work immediately again.
Fig. 5 is that two of ballast uses of the utility model or two above fluorescent tubes have the electrical schematic diagram that fluorescent tube is regulated power functions automatically.Because electric ballast is when using two or two above fluorescent tubes, its electric ballast switch controlled circuit parameter determines, reducing when using the fluorescent tube number, and the use power ratio of all the other fluorescent tubes is higher, thereby can shorten fluorescent tube useful life.The relay that the utility model will use in every group of abnormality device changes the relay of two groups of contacts into; as shown in Figure 5; the normally-closed contact (J1-B) of relay (J1) is connected on the output circuit of fluorescent tube (Rf1); normally opened contact (J1-K) is connected on the holding circuit; and another group normally-closed contact (J1-2B) and other fluorescent tube (Rf2); (Rf3) another group of the relay in the device (J2-2B); (J3-2B) be connected in series; being connected in parallel on electric ballast output regulates on the inductance (L); when abnormality appears in any tubes; the abnormal condition protection device of this tubes works immediately; after its relay adhesive; when disconnecting this tubes output loop; short circuit is regulated the normally-closed contact tripping at inductance (L) two ends at electronic ballast output end; reduce power output; can be operated within the specified use power bracket of fluorescent tube so that remain fluorescent tube, thereby guarantee that effectively the residue fluorescent tube is safe in utilization.
Claims (4)
1. one kind is recovered electron ballast abnormality state protection device certainly; by sample circuit; control circuit; circuit is cut-off in fluorescent tube output and holding circuit is formed; it is characterized in that triode (V1); (V2); (V3) collector resistance (R1); (R2); (R3) be connected on the positive pole of electric ballast; (V1); (V2) emitter is connected on the negative pole of electric ballast; the base stage of triode (V2) is connected with the collector electrode of triode (V1); the base stage of triode (V3) is connected with the collector electrode of triode (V2); the emitter of triode (V3) is connected by relay coil on the negative pole of electric ballast, constitutes control circuit.On the fluorescent tube output circuit of electric ballast, be connected to the normally-closed contact of relay, constitute fluorescent tube output and cut-off circuit.The input circuit of fluorescent tube is connected on the output circuit of fluorescent tube by resistance (R1), and the normally opened contact by relay, and diode (D2) is connected on the base resistance (R3) of control circuit triode (V1), constitutes holding circuit.
2. abnormal condition protection device according to claim 1 is characterized in that the resistance (R1) in the holding circuit, can also be serially connected in the fluorescent tube loop after resonant capacitance is in parallel.
3. according to claim 1,2 described abnormal condition protection devices, when it is characterized in that adopting an electric ballast to use the above fluorescent tube of two or two, the circuit of forming every tubes all can independently be provided with the above-mentioned abnormal condition protection device of a cover.
4. according to claim 1,2,3 described abnormal condition protection devices; when it is characterized in that ballast uses the above fluorescent tube of two or two; relay in the self-contained unit of every tubes circuit setting can also adopt the relay of two groups contact; one group of normally-open normally-close contact of relay is used for the output of this group fluorescent tube and cut-offs circuit and holding circuit; after another group normally-closed contact of relay in the self-contained unit of another group normally-closed contact and other tube circuit setting is connected in series, is connected in parallel on electric ballast output and regulates on the inductance (L).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420014406 CN2673031Y (en) | 2004-01-05 | 2004-01-05 | Abnormal state protector of self restoration electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420014406 CN2673031Y (en) | 2004-01-05 | 2004-01-05 | Abnormal state protector of self restoration electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2673031Y true CN2673031Y (en) | 2005-01-19 |
Family
ID=34482661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420014406 Expired - Fee Related CN2673031Y (en) | 2004-01-05 | 2004-01-05 | Abnormal state protector of self restoration electronic ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2673031Y (en) |
-
2004
- 2004-01-05 CN CN 200420014406 patent/CN2673031Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20060630 Pledge (preservation): Preservation |
|
| PD01 | Discharge of preservation of patent |
Date of registration: 20061219 Pledge (preservation): Preservation |
|
| PP01 | Preservation of patent right |
Effective date of registration: 20070706 Pledge (preservation): Preservation |
|
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20071226 Pledge (preservation): Preservation registration |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050119 Termination date: 20070105 |