CN203313507U - Compensation circuit - Google Patents
Compensation circuit Download PDFInfo
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- CN203313507U CN203313507U CN2013203640636U CN201320364063U CN203313507U CN 203313507 U CN203313507 U CN 203313507U CN 2013203640636 U CN2013203640636 U CN 2013203640636U CN 201320364063 U CN201320364063 U CN 201320364063U CN 203313507 U CN203313507 U CN 203313507U
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- bridge rectifier
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Abstract
The utility model relates to a compensation circuit which enables stepless dimming on a self-ballasted fluorescent lamp to be realized. According to the compensation circuit, a detection circuit is connected in series between a bridge rectification circuit and a power compensation circuit, the bridge rectification circuit is composed of a diode D9, a diode D10, a diode D12 and a diode D13, the detection circuit is composed of a triode Q5, a triode Q4 and a resistor R12, the base of the triode Q5 is connected with the output end of the bridge rectification circuit, the emitter of the triode Q5 is connected with the input end of the bridge rectification circuit, the collector of the triode Q5 is in butt joint with the base of the triode Q4, the emitter of the triode Q4 is in butt joint with the emitter of the triode Q5, the collector of the triode Q4 is in butt joint with the output end of the bridge rectification circuit through the power compensation circuit R11, one end of the resistor R12 is in butt joint with a to-be-detected circuit interface C, and the other end of the resistor R12 is in butt joint with the base of the triode Q4. The compensation circuit can effectively realize compensation on current of a dimming panel circuit.
Description
Technical field
The utility model relates to a kind of circuit, is specifically related to a kind of compensating circuit of realizing the self-ballasted fluorescent lamp non-pole light regulating.
Background technology
At present common auto-excitation type electric ballast circuit adopts half-bridge DC-AC conversion, and power supply is the half-bridge power supply after rectifier bridge and electrochemical capacitor filtering.The two poles of the earth could work because power saving fluorescent lamps is high pressure ionization conducting gas fluorescent tube, must, with high pressure Nonlinear Impulsive circuit, have burning voltage to work! Pressure regulation namely reduces voltage makes its light more dimmed, and voltage will reduce, just can not stable voltage, fluorescent tube just there will be stroboscopic, suitably regulating 175～220V could work, and suitably regulation voltage 175-220V can dim electricity-saving lamp, is exactly to change not quite! Just dark a little, this can not be the requirement that most people use, lower than below 175V, just stroboscopic occurring immediately, while continuing to turn down voltage, energy-conservation lantern festival is slowly dimmed, the overfrequency of still glimmering, extinguish while having arrived limiting value then.Because the inner two-tube value of magnification of recommending the high voltage transistor physical data of the high-voltage pulse circuit of each lamp is different! It is pressure regulation on a large scale unlike the linear resistance tungsten lamp, can when 100-230V, work.
Common auto-excitation type electric ballast can not be realized non-pole light regulating, and electricity-saving lamp is the gas discharge principle of luminosity, can by the mode of lamp current, carry out light modulation with regulating.General light modulation panel is to control the AC power pulsewidth with bidirectional triode thyristor, is so directly to adjust source current, also can affect lamp current in theory.But simple thyristor regulating optical circuit can produce surging, and energy-saving lamp circuit is burnt.So general dimmer is can not be used on general electricity-saving lamp.
Summary of the invention
The purpose of this utility model is exactly the defect existed for prior art, and a kind of compensating circuit of realizing the self-ballasted fluorescent lamp non-pole light regulating is provided, and sort circuit can steady illumination, can realize light modulation simultaneously.
The technical scheme that the utility model provides is:
A kind of compensating circuit, comprise bridge rectifier, testing circuit and power compensating circuit, described testing circuit is series between bridge rectifier and power compensating circuit, and described bridge rectifier consists of diode D9, diode D10, diode D12 and diode D13; Diode D9 and diode D12 series connection, and the input interface A of testing circuit is wanted in its joint access; Diode D10 and diode D13 series connection, and the output B of its joint access light modulation panel; Testing circuit consists of triode Q5, triode Q4 and resistance R 12, the base stage of triode Q5 connects the output of bridge rectifier, the emitter of triode Q5 connects the input of bridge rectifier, the base stage docking of the collector electrode of triode Q5 and triode Q4, the emitter docking of the emitter of triode Q4 and triode Q5, the collector electrode of triode Q4 is by the output docking of R11 and the bridge rectifier of power compensating circuit; One end of resistance R 12 docks the other end with the circuit interface C that will detect and docks with the base stage of triode Q4.
Concrete, described triode Q5 also is connected with resistance R 10, voltage stabilizing didoe D11 and resistance R 13, the end of the negative pole contact resistance R10 of voltage stabilizing didoe D11, and the other end of resistance R 10 docks with the output of bridge rectifier, the base stage of the anodal connecting triode Q5 of voltage stabilizing didoe D11, the base stage of an end connecting triode Q5 of resistance R 13 and its other end is connected with the input of bridge rectifier.
The utility model utilizes the switch of triode Q5 and triode Q4 and the characteristic of amplification, as coupling, the circuit of exchanging optic panel inside provides current compensation, and Simultaneous Stabilization ordinary electronic ballast circuit makes electric ballast unaffected, and then realizes the purpose from the ballast adjusting brightness of fluorescent lamp.The utility model can effectively realize exchanging the compensation of optic panel electric current.
The accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model;
Fig. 2 is the circuit diagram of embodiment.
Embodiment
Be the compensating circuit that the utility model provides as shown in Figure 1, comprise bridge rectifier, testing circuit and power compensating circuit.In the compensating circuit access ordinary electronic ballast circuit that the utility model is provided and light modulation panel circuit as shown in Figure 2.
Described bridge rectifier consists of diode D9, diode D10, diode D12 and diode D13.Diode D9 and diode D12 series connection, and its joint access circuit of electronic ballast input; Diode D10 and diode D13 series connection, and the output of its joint access light modulation panel.
Testing circuit consists of triode Q5, triode Q4 and resistance R 12.The base stage of triode Q5 connects the output of bridge rectifier, and the emitter of triode Q5 connects the input of bridge rectifier, the base stage docking of the collector electrode of triode Q5 and triode Q4.The emitter docking of the emitter of triode Q4 and triode Q5, the collector electrode of triode Q4 is by the output docking of power compensating circuit R11 and bridge rectifier.One termination of resistance R 12 enters in circuit of electronic ballast, and resistance R 12 other ends dock with the base stage of triode Q4.
And can steady operation for triode Q5, also be connected with resistance R 10, voltage stabilizing didoe D11 and resistance R 13.The end of the negative pole contact resistance R10 of voltage stabilizing didoe D11, and the other end of resistance R 10 docks with the output of bridge rectifier, the base stage of the anodal connecting triode Q5 of voltage stabilizing didoe D11, the base stage of an end connecting triode Q5 of resistance R 13 and its other end is connected with the input of bridge rectifier.
Circuit as shown in Figure 2, when switching on power, specified voltage 220V, through the light modulation panel circuit, is added to respectively ordinary electronic ballast circuit and compensating circuit.When the light modulation panel is regulated, can cause the direct current after diode D1, diode D2, diode D3, diode D4, capacitor C 5 rectifying and wave-filterings in circuit of electronic ballast to change, this variation meeting is added on triode Q4 and triode Q5 by R12.
After triode Q4 and triode Q5 detected voltage and change, the triode Q4 angle of flow changed, and resistance R 11 provides current compensation for the circuit of light modulation panel inside, and Simultaneous Stabilization ordinary electronic ballast circuit is unaffected, makes whole compensating circuit work.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or the part technical characterictic is equal to replacement embodiment of the present utility model; And not breaking away from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (2)
1. compensating circuit, comprise bridge rectifier, testing circuit and power compensating circuit, described testing circuit is series between bridge rectifier and power compensating circuit, it is characterized in that, described bridge rectifier consists of diode D9, diode D10, diode D12 and diode D13; Diode D9 and diode D12 series connection, and the input interface A of testing circuit is wanted in its joint access; Diode D10 and diode D13 series connection, and the output B of its joint access light modulation panel; Testing circuit consists of triode Q5, triode Q4 and resistance R 12, the base stage of triode Q5 connects the output of bridge rectifier, the emitter of triode Q5 connects the input of bridge rectifier, the base stage docking of the collector electrode of triode Q5 and triode Q4, the emitter docking of the emitter of triode Q4 and triode Q5, the collector electrode of triode Q4 is by the output docking of R11 and the bridge rectifier of power compensating circuit; One end of resistance R 12 docks the other end with the circuit interface C that will detect and docks with the base stage of triode Q4.
2. a kind of compensating circuit according to claim 1, it is characterized in that, described triode Q5 also is connected with resistance R 10, voltage stabilizing didoe D11 and resistance R 13, the end of the negative pole contact resistance R10 of voltage stabilizing didoe D11, and the other end of resistance R 10 docks with the output of bridge rectifier, the base stage of the anodal connecting triode Q5 of voltage stabilizing didoe D11, the base stage of an end connecting triode Q5 of resistance R 13 and its other end is connected with the input of bridge rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203640636U CN203313507U (en) | 2013-06-25 | 2013-06-25 | Compensation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203640636U CN203313507U (en) | 2013-06-25 | 2013-06-25 | Compensation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203313507U true CN203313507U (en) | 2013-11-27 |
Family
ID=49619673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203640636U Expired - Fee Related CN203313507U (en) | 2013-06-25 | 2013-06-25 | Compensation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203313507U (en) |
-
2013
- 2013-06-25 CN CN2013203640636U patent/CN203313507U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20150625 |
|
| EXPY | Termination of patent right or utility model |