CN204795792U - Candle lamp drive power supply - Google Patents
Candle lamp drive power supply Download PDFInfo
- Publication number
- CN204795792U CN204795792U CN201520545900.4U CN201520545900U CN204795792U CN 204795792 U CN204795792 U CN 204795792U CN 201520545900 U CN201520545900 U CN 201520545900U CN 204795792 U CN204795792 U CN 204795792U
- Authority
- CN
- China
- Prior art keywords
- output
- control chip
- resistance
- candle lamp
- lamp driving
- 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.)
- Active
Links
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model provides a candle lamp drive power supply, it includes rectifier circuit, control chip, power conditioning circuitry, output control circuit and current sampling circuit, control chip is BP2832A, rectifier circuit's output and control chip electricity are connected, power conditioning circuitry and control chip are connected, output control circuit includes the inductance, the one end of inductance is connected with the positive pole of diode, the other end is as output LED -, the negative pole of diode is connected with rectifier circuit's output, and as output LED+, shunt capacitance between output LED - and the output LED+, the termination control chip that inductance and the positive pole of diode are connected, current sampling circuit is connected with the control chip electricity, carry out current detection through current sampling circuit, ensure the power and also can guarantee stationary flow output under voltage fluctuation's the condition, realize different power output through changing power conditioning circuitry, also can realize different power designs without the design of changing circuitry board promptly.
Description
Technical field
The utility model relates to a kind of power supply, is specifically related to a kind of candle lamp driving power.
Background technology
Along with the development of LED technology, LED has environmental protection and energy saving due to it, power consumption bench advantage in little useful life, obtains applying more and more widely in even daily life illumination is thrown light in low-light level.LED needs to be operated in low-voltage direct state, when adopting mains-supplied, must be rectified into DC power supply, but according to the number of LED, best bet adopts switching regulator stabilized current power supply.
And candle lamp due to volume little, power diversity, can be used to the decoration in more place, but it is higher to power requirement, and power-supply fluctuation easily makes the light source of candle lamp burn, therefore needs a kind of stable driving power.
Utility model content
In order to overcome above technical deficiency, the utility model provides a kind of candle lamp driving power.
The utility model provides a kind of candle lamp driving power, it comprises rectification circuit, control chip U1, power conditioning circuitry, output control circuit and current sampling circuit, described control chip U1 is BP2832A, the output of described rectification circuit is held with the VCC of control chip U1 and is electrically connected, described power conditioning circuitry is held with the ROVP of control chip U1 and is connected, described output control circuit comprises inductance L 1, one end of described inductance L 1 is connected with the anode of diode D1, the other end is as output LED-, the described negative electrode of diode D1 is connected with the output of rectification circuit, and as output LED+, shunt capacitance C3 between output LED-and output LED+, the DRAIN of the termination control chip U1 that inductance L 1 is connected with the anode of diode D1 holds, described current sampling circuit is held with the CS of control chip U1 and is electrically connected.
Described power conditioning circuitry comprises resistance R3, and resistance R3 one end is held with the ROVP of control chip U1 and is connected, other end ground connection.
Described current sampling circuit comprises resistance R4 and resistance R5, the CS end of a termination control chip U1 of the resistance R4 after parallel connection and resistance R5, other end ground connection.
The VCC end of described control chip U1 is electrically connected with the output of rectification circuit by resistance.
Described resistance is the resistance R1 and resistance R2 that are connected in series.
The VCC end of described control chip U1 is by electric capacity C2 ground connection.
Described rectification circuit comprises rectifier bridge BD1.
The common cathode output of described rectifier bridge is by electrochemical capacitor C1 ground connection.
Inline fuse F1 before arbitrary input of described rectifier bridge.
The beneficial effect of utility model is: carry out current detecting by current sampling circuit, guarantee that power supply also can ensure that when voltage fluctuation current stabilization exports, realizing different capacity output by changing power conditioning circuitry simultaneously, namely need not change board design and also can realize different power designs.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As shown in Figure 1, the utility model provides a kind of candle lamp driving power, it comprises rectification circuit, control chip U1, power conditioning circuitry, output control circuit and current sampling circuit, described control chip U1 is BP2832A, the output of described rectification circuit is held with the VCC of control chip U1 and is electrically connected, described power conditioning circuitry is held with the ROVP of control chip U1 and is connected, described output control circuit comprises inductance L 1, one end of described inductance L 1 is connected with the anode of diode D1, the other end is as output LED-, the described negative electrode of diode D1 is connected with the output of rectification circuit, and as output LED+, shunt capacitance C3 between output LED-and output LED+, the DRAIN of the termination control chip U1 that inductance L 1 is connected with the anode of diode D1 holds, described current sampling circuit is held with the CS of control chip U1 and is electrically connected.
BP2832A is a high accuracy voltage-dropping type LED constant current driving chip.Chip operation, at critical current mode continuous mode, is applicable to the non-isolated voltage-dropping type LED constant current power supply of 85Vac ~ 265Vac gamut input voltage.The integrated 500V power switch of BP2832A chip internal, adopt and drive and current detecting mode, the operating current of chip is extremely low, detect and power supply without the need to auxiliary winding, only need little peripheral cell, excellent constant-current characteristics can be realized, saved system cost and volume greatly.
Described power conditioning circuitry comprises resistance R3, and resistance R3 one end is held with the ROVP of control chip U1 and is connected, other end ground connection, resistance R3 can carry out adjustment resistance size according to the power of candle lamp demand, do not need to modify to circuit again, only need change the resistance of resistance R3.
Described current sampling circuit comprises resistance R4 and resistance R5, the CS end of a termination control chip U1 of the resistance R4 after parallel connection and resistance R5, other end ground connection, and this resistance R4 and resistance R5 also plays short-circuit protection to chip.
The VCC end of described control chip U1 is electrically connected with the output of rectification circuit by resistance.Described resistance is the resistance R1 and resistance R2 that are connected in series, reduces voltage, to meet the voltage request of chip.
The common cathode output of described rectifier bridge is by electrochemical capacitor C1 ground connection, play the effect of filtering, ensure the stable of input voltage, prevent the impact of fluctuating on power supply, the VCC end of described control chip U1, by electric capacity C2 ground connection, ensures the stationarity of the input voltage of control chip U1 further.
Described rectification circuit comprises rectifier bridge BD1, plays the effect of rectification.
Inline fuse F1 before arbitrary input of described rectifier bridge, plays the effect of protection.
Embodiment should not be considered as restriction of the present utility model, any improvement done based on spirit of the present utility model, all should within protection range of the present utility model.
Claims (9)
1. a candle lamp driving power, it is characterized in that: it comprises rectification circuit, control chip U1, power conditioning circuitry, output control circuit and current sampling circuit, described control chip U1 is BP2832A, the output of described rectification circuit is held with the VCC of control chip U1 and is electrically connected, described power conditioning circuitry is held with the ROVP of control chip U1 and is connected, described output control circuit comprises inductance L 1, one end of described inductance L 1 is connected with the anode of diode D1, the other end is as output LED-, the described negative electrode of diode D1 is connected with the output of rectification circuit, and as output LED+, shunt capacitance C3 between output LED-and output LED+, the DRAIN of the termination control chip U1 that inductance L 1 is connected with the anode of diode D1 holds, described current sampling circuit is held with the CS of control chip U1 and is electrically connected.
2. a kind of candle lamp driving power according to claim 1, it is characterized in that, described power conditioning circuitry comprises resistance R3, and resistance R3 one end is held with the ROVP of control chip U1 and is connected, other end ground connection.
3. a kind of candle lamp driving power according to claim 1, is characterized in that, described current sampling circuit comprises resistance R4 and resistance R5, the CS end of a termination control chip U1 of the resistance R4 after parallel connection and resistance R5, other end ground connection.
4. a kind of candle lamp driving power according to claim 1, is characterized in that, the VCC end of described control chip U1 is electrically connected with the output of rectification circuit by resistance.
5. a kind of candle lamp driving power according to claim 4, is characterized in that, described resistance is the resistance R1 and resistance R2 that are connected in series.
6. a kind of candle lamp driving power according to claim 1 or 4 or 5, is characterized in that, the VCC end of described control chip U1 is by electric capacity C2 ground connection.
7. a kind of candle lamp driving power according to claim 1, it is characterized in that, described rectification circuit comprises rectifier bridge BD1.
8. a kind of candle lamp driving power according to claim 7, is characterized in that, the common cathode output of described rectifier bridge is by electrochemical capacitor C1 ground connection.
9. a kind of candle lamp driving power according to claim 7, is characterized in that, inline fuse F1 before arbitrary input of described rectifier bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520545900.4U CN204795792U (en) | 2015-07-27 | 2015-07-27 | Candle lamp drive power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520545900.4U CN204795792U (en) | 2015-07-27 | 2015-07-27 | Candle lamp drive power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204795792U true CN204795792U (en) | 2015-11-18 |
Family
ID=54535750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520545900.4U Active CN204795792U (en) | 2015-07-27 | 2015-07-27 | Candle lamp drive power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204795792U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108282926A (en) * | 2018-03-02 | 2018-07-13 | 宁波永贸时代进出口有限公司 | A kind of LED luminous flames circuit for lamp, LED storm lantern and candle lamp |
-
2015
- 2015-07-27 CN CN201520545900.4U patent/CN204795792U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108282926A (en) * | 2018-03-02 | 2018-07-13 | 宁波永贸时代进出口有限公司 | A kind of LED luminous flames circuit for lamp, LED storm lantern and candle lamp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204026468U (en) | A kind of brightness automatic control formula LED street lamp | |
| CN202629606U (en) | Multifunctional flashlight | |
| CN204795792U (en) | Candle lamp drive power supply | |
| CN203167384U (en) | AC directly driving LED lamp current control circuit | |
| CN204652745U (en) | A kind of constant current driver circuit for LED | |
| CN204859636U (en) | Energy -conserving LED drive circuit | |
| CN203661352U (en) | Low voltage LED lamp driving circuit | |
| CN204697341U (en) | LED power | |
| CN205489762U (en) | Simple and practical's portable power source | |
| CN202841601U (en) | Constant-current power supply circuit | |
| CN204616179U (en) | The fiery power taking auxiliary circuit of a kind of novel list | |
| CN202941013U (en) | LED constant-current power supply circuit | |
| CN204887555U (en) | Simple and practical's LED lamp | |
| CN204761769U (en) | LED control circuit | |
| CN204291498U (en) | A kind of isolated form LED drive circuit based on transformer | |
| CN102843829A (en) | Constant-current light-emitting circuit for electronic candle | |
| CN205378292U (en) | Excessive pressure undervoltage protection LED lamp | |
| CN203608437U (en) | LED power supply with PFC circuit | |
| CN208657136U (en) | A kind of novel cut phase light adjusting circuit for LED illumination | |
| CN204069452U (en) | Based on APFC without stroboscopic LED constant current Drive and Control Circuit | |
| CN107613611A (en) | Alternating current and direct current automatic switchover LED | |
| CN204350371U (en) | Led light adjusting circuit | |
| CN203057610U (en) | Programmable LED drive device | |
| CN203261510U (en) | LED intelligent power-supply driving | |
| CN203219551U (en) | LED (light emitting diode) constant-current driving power circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |