CN201422191Y - Improved high intensity discharge lamp start circuit - Google Patents
Improved high intensity discharge lamp start circuit Download PDFInfo
- Publication number
- CN201422191Y CN201422191Y CN2009200704485U CN200920070448U CN201422191Y CN 201422191 Y CN201422191 Y CN 201422191Y CN 2009200704485 U CN2009200704485 U CN 2009200704485U CN 200920070448 U CN200920070448 U CN 200920070448U CN 201422191 Y CN201422191 Y CN 201422191Y
- Authority
- CN
- China
- Prior art keywords
- discharge lamp
- point
- starting transformer
- improved high
- 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 - Lifetime
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Abstract
The utility model relates to an improved high intensity discharge lamp start circuit, comprising a first auxiliary electrical inductance L1, a first starting transformer T1 and a first resonance electric capacity C1, a secondary side Ls of the first starting transformer T1 is connected in series with a discharge lamp and then is connected between a full bridge output A point and a full bridge output B point, the first auxiliary electrical inductance L1 is connected in series with a primary side Lp of the first starting transformer T1 and then is connected in series with the first resonance electric capacity C1 and then is connected between the A point and the earth; or the first auxiliary electrical inductance L1 is connected in series with the first resonance electric capacity C1 and thenis connected between the A point and a direct current power bus. The improved high intensity discharge lamp start circuit has the advantages of simple structure, low cost and high reliability.
Description
Technical field
The utility model relates to a kind of circuit of electronic ballast, particularly a kind of improved high-intensity gas discharge lamp start-up circuit.
Background technology
In the high-intensity gas discharge lamp of existing employing full-bridge topology (HID lamp) electric ballast, the normal start-up circuit that adopts as shown in Figure 1.Wherein, start-up circuit is by the first auxiliary induction L
1, the first starting transformer T
1, the first resonant capacitance C
1Common formation.The first auxiliary induction L wherein
1, the first starting transformer T
1Former limit L
pWith the first resonant capacitance C
1Be connected in full-bridge output A after the series connection, the B point-to-point transmission; And the first starting transformer T
1Secondary L
sBe connected with gaseous discharge lamp with the A point.Full-bridge works in low frequency all the time.Before lamp is not lighted, switching tube Q
1～Q
4When switch switched, rising edge that the voltage of A, B point-to-point transmission switches and the radio-frequency component in the trailing edge can be used for making the first auxiliary induction L
1, the first starting transformer T
1, the first resonant capacitance C
1Produce resonance, at the first starting transformer T
1Former limit L
pObtain higher voltage, again through the first starting transformer T
1Boost, at the first starting transformer T
1Secondary L
sCan obtain lighting the required high pressure of gaseous discharge lamp.After lamp is lighted, then do not have again high pressure to produce.
The utility model content
Technical problem of the present utility model is that a kind of simple in structure, cost is low, reliability is high improved high-intensity gas discharge lamp start-up circuit will be provided.
In order to solve above technical problem, the utility model provides a kind of improved high-intensity gas discharge lamp start-up circuit, comprises the first auxiliary induction L
1, the first starting transformer T
1With the first resonant capacitance C
1, the first starting transformer T
1Secondary L
sBe connected between full-bridge output A, the B the first auxiliary induction L after gaseous discharge lamp is connected in series at 2
1With the first starting transformer T
1Former limit Lp serial connection, again with the first resonant capacitance C
1Be connected on after the serial connection between A point and the ground; Perhaps with the first resonant capacitance C
1Be connected on after the serial connection between A point and the DC power bus.
Operation principle of the present utility model is the rising edge of A point voltage when relying on full-bridge switch to switch or the radio-frequency component in the trailing edge, by the first auxiliary induction L
1, the first starting transformer T
1, the first resonant capacitance C
1The resonance and the first starting transformer T
1Boost, at the first starting transformer T
1Secondary L
sProduce required high pressure, start gaseous discharge lamp.
Superior effect of the present utility model is: simple in structure, cost is low, the reliability height.
Description of drawings
Fig. 1 is the circuit diagram of existing gaseous discharge lamp;
Fig. 2 is a circuit diagram of the present utility model;
Fig. 3 is another circuit diagram of the present utility model.
Embodiment
See also shown in the accompanying drawing, the utility model will be further described.
As shown in Figures 2 and 3, the utility model provides a kind of improved high-intensity gas discharge lamp start-up circuit, comprises the first auxiliary induction L
1, the first starting transformer T
1With the first resonant capacitance C
1, the first starting transformer T
1Secondary L
sBe connected between full-bridge output A, the B the first auxiliary induction L after gaseous discharge lamp is connected in series at 2
1With the first starting transformer T
1Former limit Lp serial connection, again with the first resonant capacitance C
1Be connected on after the serial connection between A point and the ground; Perhaps with the first resonant capacitance C
1Be connected on after the serial connection between A point and the DC power bus.
Operation principle of the present utility model is the rising edge of A point voltage when relying on full-bridge switch to switch or the radio-frequency component in the trailing edge, by the first auxiliary induction L
1, the first starting transformer T
1, the first resonant capacitance C
1The resonance and the first starting transformer T
1Boost, at the first starting transformer T
1Secondary L
sProduce required high pressure, start gaseous discharge lamp.
Claims (1)
1, a kind of improved high-intensity gas discharge lamp start-up circuit comprises the first auxiliary induction L
1, the first starting transformer T
1With the first resonant capacitance C
1, the first starting transformer T
1Secondary L
sBe connected in after gaseous discharge lamp is connected in series between 2 of full-bridge output A, the B, it is characterized in that:
The first auxiliary induction L
1With the first starting transformer T
1Former limit Lp serial connection, again with the first resonant capacitance C
1Be connected on after the serial connection between A point and the ground; Perhaps with the first resonant capacitance C
1Be connected on after the serial connection between A point and the DC power bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200704485U CN201422191Y (en) | 2009-04-15 | 2009-04-15 | Improved high intensity discharge lamp start circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200704485U CN201422191Y (en) | 2009-04-15 | 2009-04-15 | Improved high intensity discharge lamp start circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201422191Y true CN201422191Y (en) | 2010-03-10 |
Family
ID=41808852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200704485U Expired - Lifetime CN201422191Y (en) | 2009-04-15 | 2009-04-15 | Improved high intensity discharge lamp start circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201422191Y (en) |
-
2009
- 2009-04-15 CN CN2009200704485U patent/CN201422191Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100310 |