CN2240826Y - High performance and price ratio electronic ballast - Google Patents
High performance and price ratio electronic ballast Download PDFInfo
- Publication number
- CN2240826Y CN2240826Y CN 95239946 CN95239946U CN2240826Y CN 2240826 Y CN2240826 Y CN 2240826Y CN 95239946 CN95239946 CN 95239946 CN 95239946 U CN95239946 U CN 95239946U CN 2240826 Y CN2240826 Y CN 2240826Y
- Authority
- CN
- China
- Prior art keywords
- diode
- self
- current
- high performance
- series
- 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 - Fee Related
Links
Images
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The utility model provides a high performance and price ratio electronic ballast, which is composed of a bridge rectifier, a self-excited oscillator, a current-limiting inductance and a power supply makeup pump source. An energy storage device is adopted in the base circuit of the self-excited oscillator. The energy storage device is composed of diodes, capacitors and an electrical inductance; the diode D5 is connected in series with L3 after connected in parallel with the capacitor C4; the diode D6 is connected in series with L4 after connected in parallel with C5. The energy storage device and the feedback coils L1 and L2 are connected in series the base circuit of transistors T1 and T2. The feedback coils L1 and L2 and the current limiting electrical inductance L0 are wound on the same magnetic core. After measured, the content of third harmonic is less than 20%; the line power factor is 0.95; the wave peak coefficient of a modulation wave is 1.8 more or less; the material cost is low.
Description
The utility model proposes a kind of high performance price ratio electric ballast.The technical field that belongs to illuminating equipment.
Prior art such as ZL93236358.X, its circuit structure is shown in figure (1).Defectives such as it is higher to have adapted high power lamp cost, and lamp current modulating wave crest factor is bigger.
The purpose of this utility model is the defective at above-mentioned existence, makes it reduce former device material cost, increases the lamp power with the electric ballast adapted; Improve the electric ballast operating frequency, help adopting filter circuit to reduce the interference of electric ballast audio-visual equipment; Reduce lamp current modulating wave crest factor, prolonging lamp tube service life.
Technical solution of the present utility model: by bridge rectifier, self-excited oscillator, current-limiting inductance, power supply replenishes pumping source and forms, adopt a kind of accumulator in the base loop of transistor T1, T2 in self-excited oscillator, this accumulator is by diode D5, D6, capacitor C 4, C5 constitute, feedback coil L1, L2, coil L4, L3, its connected mode is that diode D5 connects with L3 with capacitor C 4 backs in parallel, connect with L4 after diode D6 and the C5 parallel connection, accumulator and feedback coil L1, L2 are connected in the base loop of transistor T1, T2.Feedback coil L1, L2 and current-limiting inductance L0 are on same magnetic core.
Good effect of the present utility model.
According to implementing the circuit structure shown in the illustration (1), the electronic energy-saving lamp of making through the test of national electric light source products quality supervision and test center, reaches following technical indicator:
(1) source current triple-frequency harmonics content is less than 20%, and the line power factor is 95%.
(2) lamp current modulating wave crest factor side about 1.8.
The components and parts material cost can accomplish to be lower than general low power factor electronic energy-saving lamp.
Accompanying drawing 1 is the utility model embodiment electrical block diagram.
Accompanying drawing 2 is electrical block diagrams of ZL93236358.X.
Accompanying drawing 3 is electrical block diagrams of self-excited oscillator.
Further describe the new technical solution of this practicality below in conjunction with accompanying drawing:
Capacitor C 4, diode D5, coil L3, capacitor C 5, diode D6, coil L4 form two accumulators respectively, are connected in the base loop of triode T1, T2, resistance R 1, R3 are biasing resistance, and resistance R 2, diode D7, resistance R 4, diode D8 provide a bias voltage to T1, T2.Capacitor C 6, C7, diode D10, D11 form power supply and replenish pumping source.Power supply replenishes pumping source and selects patent No. ZL93236358.X for use.It act as and improves the electric ballast power factor and reduce source current triple-frequency harmonics content.The utility model improves the ratio of performance to price of electric ballast by the improvement to the self-excited oscillator connected mode.Self-excited oscillator has adopted self-supporting bias current, and resistance R 1, R3 are biasing resistance, and L1, L2 are feedback coil, with current-limiting inductance L0 on same magnetic core owing to adopt this mode, saved the circuits for triggering and the magnet ring that adopt in the general electric ballast, simplify the structure, reduced cost.Be composed in series a kind of accumulator with coil again with electric capacity is in parallel with diode, allow this accumulator be connected in the transistor base loop of oscillator.The electric energy of accumulator utilization storage and the conducting of magnetic energy oxide-semiconductor control transistors T1, T2 and end, make not conducting simultaneously of T1, T2, and conducting and the cut-off speed of increase T1, T2, the two all can reduce the transistor temperature rise, make electric ballast under same transistor, can increase the lamp power that cooperates with electric ballast effectively, simultaneously because the speed that accumulator has increased T1, T2 conducting and ended can be operated on the operating frequency that is higher than 50KC electric ballast.Help adopting filter circuit to reduce the interference of electric ballast to audio-visual equipment.
Claims (1)
1. a high performance price ratio electric ballast is by bridge rectifier, self-excited oscillator, current-limiting inductance, power supply replenishes pumping source and forms, it is characterized in that adopting in the base loop of transistor T1, T2 in self-excited oscillator a kind of accumulator, this accumulator is by diode D5, D6, capacitor C 4, C5 constitute, feedback coil L1, L2, coil L4, L3, its connected mode is to connect with L3 in diode D5 and capacitor C 4 backs in parallel, connects with L4 after diode D6 and the C5 parallel connection, and accumulator and feedback coil L1, L2 are connected in the base loop of transistor T1, T2.Feedback coil L1, L2 and current-limiting inductance L0 are on same magnetic core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95239946 CN2240826Y (en) | 1995-06-14 | 1995-06-14 | High performance and price ratio electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95239946 CN2240826Y (en) | 1995-06-14 | 1995-06-14 | High performance and price ratio electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2240826Y true CN2240826Y (en) | 1996-11-20 |
Family
ID=33881627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95239946 Expired - Fee Related CN2240826Y (en) | 1995-06-14 | 1995-06-14 | High performance and price ratio electronic ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2240826Y (en) |
-
1995
- 1995-06-14 CN CN 95239946 patent/CN2240826Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109661072A (en) | LLC resonant converter, LED drive circuit and its control method | |
| US4613796A (en) | Single transistor oscillator ballast circuit | |
| CN2240826Y (en) | High performance and price ratio electronic ballast | |
| CN2194584Y (en) | Ballast for fluorescen lamp | |
| CN2153904Y (en) | Plug type thin dc power supply | |
| CN2222990Y (en) | Electronic ballast device with iron core electroinduction | |
| CN2150701Y (en) | Electronic ballast | |
| CN2271089Y (en) | Low harmonic electronic ballast | |
| CN2131271Y (en) | Electronic ballast | |
| CN2253559Y (en) | Self-excitation electronic ballast | |
| CN2126950Y (en) | Power supply for neon lamp | |
| CN2168386Y (en) | High-frequency heatless filament fluorescent lamp power supply | |
| CN2193639Y (en) | Working frequency low voltage starting ballast for fluorescent lamp | |
| CN2119073U (en) | Electronic ballast of high voltage gas discharge lamp | |
| CN2350922Y (en) | Power switching device for electronic neon lamp | |
| CN2268332Y (en) | High-efficiency reliable emergency fluorescent lamp | |
| CN2240228Y (en) | Electronic ballast for HID lamp | |
| CN2172938Y (en) | Double-source glow-starting ballast for light tube | |
| CN2373967Y (en) | Rectifying direct power supply type high power factor electronic ballast | |
| CN2469656Y (en) | Invert power supply unit used for lamp-socket | |
| CN2238518Y (en) | Electronic ballast for daylight lamp | |
| CN101932181B (en) | Cold cathode fluorescent energy-saving lamp circuit | |
| CN2181164Y (en) | Energy-storage complementary electronic ballast | |
| CN2159642Y (en) | Stepless bright regulating ballast for fluorescent light | |
| CN201119099Y (en) | Electronic ballast |
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 |