CN2221852Y - Electronic ballast for daylight lamp - Google Patents
Electronic ballast for daylight lamp Download PDFInfo
- Publication number
- CN2221852Y CN2221852Y CN 95200551 CN95200551U CN2221852Y CN 2221852 Y CN2221852 Y CN 2221852Y CN 95200551 CN95200551 CN 95200551 CN 95200551 U CN95200551 U CN 95200551U CN 2221852 Y CN2221852 Y CN 2221852Y
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- CN
- China
- Prior art keywords
- diode
- electronic ballast
- electric capacity
- lamp tube
- circuit
- 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
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Abstract
The utility model relates to an electronic ballast for daylight lamps, which is composed of a resistor, capacitors and diodes, wherein the two capacitors are respectively connected in series with the positive terminals and the negative terminals of the two diodes in a circuit, and then a parallel circuit is formed. Connecting points of series connection are connected with a commercial power of 220V. One capacitor is connected with a current limiting resistor after connected with the negative terminal of one diode, and the other capacitor is connected with both ends of a lamp tube of the other end of the limiting current resistor after connected with the positive terminal of the other diode. The utility model has the advantages of simple circuit, convenient manufacture, low cost, low minimum starting voltage and fast starting. Even if the filament on one end of the lamp tube is broken, the lamp tube can also be used. Thus, the service life of the lamp tube is prolonged. Other performances of the electronic ballast are similar to the performances of the present electronic ballast.
Description
The utility model belongs to a kind of electronic ballast for fluorescent lamp.
Fluorescent lamp is a kind of power conversion device, and behind the place in circuit, it converts electrical energy into ultraviolet ray, is converted into luminous energy by ultraviolet ray again.In conversion process of energy, fluorescent lamp ballast plays an important role, and it has guaranteed the normal ignition of fluorescent lamp.Existing fluorescent lamp ballast has two kinds, a kind of be inductance type, a kind of be electronic type.The inductance type ballast circuit is simple, and cost of manufacture is low, but must add starter for fluorescent in the circuit.And existing electronic ballast circuit complexity, the production cost height, complex manufacturing technology is difficult for promoting the use of.
The purpose of this utility model is a kind of electronic ballast for fluorescent lamp of design, and this ballast circuit simple production cost is low, and manufacturing process is simple, is suitable for market and promotes.
The purpose of this utility model realizes by following scheme: electronic ballast for fluorescent lamp is made up of resistance, electric capacity and diode circuit.In the circuit, two electric capacity are contacted mutually, form parallel circuits after the positive and negative end polyphone of two diodes joins.The polyphone joint connects 220
Civil power is the input lead-in wire.Described electric capacity be connected current-limiting resistance after an above-mentioned diode negative terminal is connected, described another electric capacity back that is connected with another diode anode is connected the fluorescent tube two ends with the other end of current-limiting resistance, thus the formation closed-loop path.
The electronic ballast for fluorescent lamp circuit is simple, and is easily manufactured, and advanced technology, cost are low, minimum starting voltage is low, and priming speed is fast, even fluorescent tube one end fracture of wire also can continue to use, thereby prolonged the useful life of fluorescent tube, the performance of other performance and existing electric ballast is close.
Fig. 1 is a shape schematic diagram of the present utility model
Fig. 2 is an electrical schematic diagram of the present utility model
Fig. 3 is an another embodiment electrical schematic diagram in the utility model
Be described as follows below in conjunction with accompanying drawing and body embodiment thereof:
In Fig. 1, electronic ballast for fluorescent lamp adopts bakelite to do shell 1, is packaged with circuit board in the housing, and adopts cured resin that it is encapsulated in the housing.Both sides are drawn input lead 2 and output lead 3 respectively.
In Fig. 2, electronic ballast for fluorescent lamp comprises resistance 4, electric capacity 5,6, diode 7,8.After contacting respectively and join, the positive and negative terminal of electric capacity 5,6 and diode 7,8 forms parallel circuits.The polyphone joint connects 220
, be input lead 2.Electric capacity 5 other ends be connected a current-limiting resistance 4 after diode 7 negative terminals join, electric capacity 6 other ends and diode 8 anodes join, the other end of this end and current-limiting resistance 4 is an output lead 3, output lead 3 connects the two ends of fluorescent tubes 9.
In Fig. 3, diode 7,8 two ends of the polyphone electrochemical capacitor 10 that adds in parallel can become no stroboscopic electric ballast mutually, is suitable for workshop and uses.
Its operation principle is: after input lead 2 inserted the 220V civil power, at the positive half cycle of AC power, to the lower end, at this moment electric capacity 5 charged (establishing negative just down) electric current through electric capacity 5 → resistance 4 → fluorescent tube 9 → diode 8; When the negative half-cycle of AC power, (establish and just bearing down), electric current passes through diode 7 → resistance 4 → fluorescent tube 9 → electric capacity 6 to the upper end by the lower end, electric capacity 6 chargings at this moment.By above-mentioned alternately charging, the upper/lower terminal of series capacitance forms voltage multiplying rectifier situation, and the high pressure of formation is added in the fluorescent tube two ends, makes fluorescent tube direct current build-up of luminance.
Claims (2)
1, a kind of electronic ballast for fluorescent lamp of being made up of resistance, electric capacity and diode etc. is characterized in that: form parallel circuits after the positive and negative end of electric capacity in the circuit (5,6) and diode (7,8) is contacted respectively and joined, the polyphone joint connects 220
Civil power, electric capacity (5) other end be connected current-limiting resistance (4) after the negative terminal of diode (7) joins, the anode of the other end of electric capacity (6) and diode (8) joins, and the other end of this end and resistance (4) is output lead (3), and lead-in wire (3) connects fluorescent tube (9) two ends.
2, electronic ballast for fluorescent lamp according to claim 1 is characterized in that: desire to be designed to not have the stroboscopic electric ballast, then the electrochemical capacitor (10) that adds in parallel between diode (7, the 8) two ends of contacting mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95200551 CN2221852Y (en) | 1995-01-19 | 1995-01-19 | Electronic ballast for daylight lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95200551 CN2221852Y (en) | 1995-01-19 | 1995-01-19 | Electronic ballast for daylight lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2221852Y true CN2221852Y (en) | 1996-03-06 |
Family
ID=33854260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95200551 Expired - Fee Related CN2221852Y (en) | 1995-01-19 | 1995-01-19 | Electronic ballast for daylight lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2221852Y (en) |
-
1995
- 1995-01-19 CN CN 95200551 patent/CN2221852Y/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 | ||
| 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 |