CN215121269U - Wide-voltage RCC non-isolated LED constant current drive control circuit - Google Patents
Wide-voltage RCC non-isolated LED constant current drive control circuit Download PDFInfo
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- CN215121269U CN215121269U CN202121179990.1U CN202121179990U CN215121269U CN 215121269 U CN215121269 U CN 215121269U CN 202121179990 U CN202121179990 U CN 202121179990U CN 215121269 U CN215121269 U CN 215121269U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model discloses a non-LED constant current drive control circuit that keeps apart of wide voltage RCC, including rectifier bridge DB1, rectifier bridge DB 1's second wiring end is connected with piezo-resistor ZR1, ann rule electric capacity CX1 and insurance resistance FR1, rectifier bridge DB 1's third wiring end respectively with piezo-resistor ZR1, ann rule electric capacity CX1 and insurance resistance FR1 are connected, rectifier bridge DB 1's first wiring end is connected with electrolytic capacitor EC1, electrolytic capacitor EC 1's the other end is connected with rectifier bridge DB 1's fourth wiring end, electrolytic capacitor EC 1's one end is connected with freewheel diode D5, freewheel diode D5's one end is connected with power output device MOS pipe Q1, transformer winding T1A and resistance R1. The utility model discloses fine solution need not the chip and the non-isolation LED constant current drive controller's that designs problem, the non-isolation LED constant current drive control circuit of wide voltage RCC, excessive pressure surge pulse protection, operating temperature is low, low-voltage automatic compensation, and the constant current precision is higher, and open circuit is out of work, safer more perfect protection.
Description
Technical Field
The utility model relates to a LED drive circuit technical field specifically is a non-isolation LED constant current drive control circuit of wide voltage RCC.
Background
At present, the existing LED constant current driving control circuit has the following technical defects and shortcomings:
1. the RCC non-isolated LED constant current drive controllers on the market all use triodes as power switch elements, and have the advantages of large internal resistance, low efficiency, high heat productivity, short service life and easy damage.
2. The conventional RCC non-isolated LED constant current drive control circuit has no voltage compensation circuit and cannot be applied to wide-voltage high-constant-current precision application occasions.
3. The conventional RCC non-isolated LED constant current drive control circuit is not used as a no-load protection circuit and is easy to damage in the production test process.
Therefore, the wide-voltage RCC non-isolated LED constant-current driving control circuit is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a non-isolation LED constant current drive control circuit of wide voltage RCC to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a wide-voltage RCC non-isolation LED constant-current drive control circuit comprises a rectifier bridge DB1, wherein a second terminal of the rectifier bridge DB1 is connected with a piezoresistor ZR1, a safety capacitor CX1 and a safety resistor FR1, a third terminal of the rectifier bridge DB1 is respectively connected with a piezoresistor ZR1, a safety capacitor CX1 and a safety resistor FR1, a first terminal of the rectifier bridge DB1 is connected with an electrolytic capacitor EC1, the other end of the electrolytic capacitor EC1 is connected with a fourth terminal of the rectifier bridge DB1, one end of the electrolytic capacitor EC1 is connected with a freewheeling diode D1, one end of the freewheeling diode D1 is connected with a power output device MOS tube Q1, a transformer winding T1/A and a resistor R1, one end of the power output device MOS tube Q1 is connected with a resistor R1, a resistor RS1 and a triode 1 are connected with one end of the power output device MOS tube Q1, one end of the triode Q3 is connected with a resistor R9, the other end of the triode Q3 is connected with a resistor R8, one end of a transformer winding T1/A is connected with a resistor R2, one end of a resistor R2 is connected with an EC2 electrolytic capacitor and a resistor R3, one end of a resistor R3 is connected with the triode Q4 and a zener diode ZD1, one end of the zener diode ZD1 is connected with another resistor R9, one end of the resistor RS2 is connected with a transformer winding T1/B, one end of the transformer winding T1/B is connected with a capacitor C3, one end of the capacitor C3 is connected with another resistor R9, one end of the triode Q4 is connected with a resistor R4, a resistor R5 and a resistor R6, and one end of the resistor R4 is connected with an LED1, a lamp bead LED2 and an LED 3.
Preferably, the safety resistor FR1, the safety capacitor CX1 and the voltage dependent resistor ZR1 form an instantaneous surge pulse protection circuit.
Preferably, the rectifier bridge DB1 and the electrolytic capacitor EC1 form an AC-to-DC energy conversion circuit, which provides working energy for a subsequent circuit.
Preferably, the transformer winding T1/A, the electrolytic capacitor EC2, the freewheeling diode D5 and the power output device MOS tube Q1 form an energy storage circuit to provide energy for the LED lamp bead string.
Preferably, the triode Q2, the triode Q3, the resistor R7, the resistor R9, the transformer winding T1/B and the capacitor C3 form a self-excited switching oscillation circuit.
Preferably, the resistor R8, the resistor RS1 and the resistor RS2 form a current sampling circuit to determine the magnitude of the output current.
Preferably, the resistor R1 is a supply resistor for the overall circuit operation.
Preferably, the resistor R2, the resistor R3, the resistor R4, the resistor R5, the resistor R6, the zener diode ZD1, the transistor Q4 and the capacitor C2 form a voltage compensation circuit.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses fine solution need not the chip and the non-isolation LED constant current drive controller's that designs problem, the non-isolation LED constant current drive control circuit of wide voltage RCC, excessive pressure surge pulse protection, operating temperature is low, low-voltage automatic compensation, and the constant current precision is higher, and open circuit is out of work, safer more perfect protection.
Drawings
Fig. 1 is a schematic diagram of the circuit structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a wide voltage RCC non-isolated LED constant current driving control circuit includes a rectifier bridge DB1, a second terminal of the rectifier bridge DB1 is connected to a varistor ZR1, a regulation capacitor CX1 and a safety resistor FR1, a third terminal of the rectifier bridge DB1 is connected to a varistor ZR1, a regulation capacitor CX1 and a safety resistor FR1, a first terminal of the rectifier bridge DB1 is connected to an electrolytic capacitor EC1, the other terminal of the electrolytic capacitor EC1 is connected to a fourth terminal of the rectifier bridge DB1, one terminal of the electrolytic capacitor EC1 is connected to a freewheeling diode D1, one terminal of the freewheeling diode D1 is connected to a power output device MOS Q1, a transformer winding T1/a and a resistor R1, one terminal of the power output device MOS Q1 is connected to a resistor R1, a resistor RS1 and a resistor RS1 are connected to a triode 1, one terminal of the resistor R1 and one terminal of the resistor R1 are connected to a triode 1, one end of a triode Q3 is connected with a resistor R9, the other end of a triode Q3 is connected with a resistor R8, one end of a transformer winding T1/A is connected with a resistor R2, one end of a resistor R2 is connected with an EC2 electrolytic capacitor and a resistor R3, one end of a resistor R3 is connected with a triode Q4 and a zener diode ZD1, one end of the zener diode ZD1 is connected with another resistor R9, one end of a resistor RS2 is connected with a transformer winding T1/B, one end of a transformer winding T1/B is connected with a capacitor C3, one end of a capacitor C3 is connected with another resistor R9, one end of a triode Q4 is connected with a resistor R4, a resistor R5 and a resistor R6, and one end of the resistor R4 is connected with a lamp bead LED1, an LED lamp bead 2 and a lamp bead LED 3.
In the specific implementation, the safety resistor FR1, the safety capacitor CX1 and the voltage dependent resistor ZR1 form an instantaneous surge pulse protection circuit.
In practical application, the rectifier bridge DB1 and the electrolytic capacitor EC1 form an AC-to-DC energy conversion circuit to provide working energy for a later-stage circuit.
In the specific implementation process, the transformer winding T1/A, the electrolytic capacitor EC2, the freewheeling diode D5 and the power output device MOS tube Q1 form an energy storage circuit to provide energy for the LED lamp bead string.
In specific implementation, the transistor Q2, the transistor Q3, the resistor R7, the resistor R9, the transformer winding T1/B and the capacitor C3 form a self-excited switching oscillation circuit.
In practical application, the resistor R8, the resistor RS1 and the resistor RS2 form a current sampling circuit to determine the magnitude of the output current.
In particular, the resistor R1 is a supply resistor for the overall circuit operation.
In practical implementation, the resistor R2, the resistor R3, the resistor R4, the resistor R5, the resistor R6, the zener diode ZD1, the transistor Q4 and the capacitor C2 form a voltage compensation circuit.
When the circuit is used, the circuit is a non-isolated buck type RCC non-isolated LED constant current drive control circuit, and an instantaneous surge pulse protection circuit is formed by a safety resistor FR1, a safety capacitor CX1 and a piezoresistor ZR 1; the rectifier bridge DB1 and the electrolytic capacitor EC1 form an AC-to-DC energy conversion circuit to provide working energy for a rear-stage circuit; an energy storage circuit is formed by the transformer winding T1/A, the electrolytic capacitor EC2, the freewheeling diode D5 and the power output device MOS tube Q1, and energy is provided for the LED lamp bead string; a triode Q2, a triode Q3, a resistor R7, a resistor R9, a transformer winding T1/B and a capacitor C3 form a self-excited switch oscillation circuit; the resistor R8, the resistor RS1 and the resistor RS2 form a current sampling circuit to determine the magnitude of output current; the resistor R1 is a power supply resistor for the whole circuit to work, when the LED lamp beads are in series open circuit and are not connected, the circuit does not work, and the function of open circuit protection is achieved; the voltage compensation circuit is composed of a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a zener diode ZD1, a triode Q4 and a capacitor C2, and when the voltage of the mains supply drops to a certain set value, the circuit is turned on to work, so that the stability of the circuit is enhanced.
The circuit is simple in structure, elements used in the circuit are conventional devices, the circuit is easy to purchase and produce, the circuit is easy to debug, the cost is low, and compared with an IC scheme on the market, the circuit can save about 20% of cost, and the circuit can enable the conversion efficiency of the circuit to be more than 90% without energy transmission of a transformer, so that more electricity is saved. The LED power-saving advantage can be more highlighted when the LED lamp is used for LED illumination.
Although the present invention has been shown and described, it is not intended to limit the scope of the invention, and all changes, modifications, substitutions and variations which come within the meaning and range of equivalency of the claims are to be understood as being embraced within their scope.
Claims (8)
1. The utility model provides a non-isolation LED constant current drive control circuit of wide voltage RCC, includes rectifier bridge DB1, its characterized in that: a second terminal of the rectifier bridge DB1 is connected with a varistor ZR1, a safety capacitor CX1 and a safety resistor FR1, a third terminal of the rectifier bridge DB1 is connected with a varistor ZR1, a safety capacitor CX1 and a safety resistor FR1 respectively, a first terminal of the rectifier bridge DB1 is connected with an electrolytic capacitor EC1, the other end of the electrolytic capacitor EC1 is connected with a fourth terminal of the rectifier bridge DB1, one end of the electrolytic capacitor EC1 is connected with a freewheeling diode D1, one end of the freewheeling diode D1 is connected with a power output device MOS tube Q1, a transformer winding T1/a and a resistor R1, one end of the power output device MOS tube Q1 is connected with the resistor R1, the resistor R1 is connected with a capacitor C1 and the resistor R1, one end of the resistor R1 is connected with a triode Q1 and the triode Q1, and one end of the triode R1 is connected with the resistor R1, the other end of the triode Q3 is connected with a resistor R8, one end of a transformer winding T1/A is connected with a resistor R2, one end of the resistor R2 is connected with an EC2 electrolytic capacitor and a resistor R3, one end of the resistor R3 is connected with a triode Q4 and a zener diode ZD1, one end of the zener diode ZD1 is connected with another resistor R9, one end of the resistor RS2 is connected with a transformer winding T1/B, one end of the transformer winding T1/B is connected with a capacitor C3, one end of the capacitor C3 is connected with another resistor R9, one end of the triode Q4 is connected with a resistor R4, a resistor R5 and a resistor R6, and one end of the resistor R4 is connected with a lamp bead LED1, a lamp bead LED2 and a lamp bead LED 3.
2. The wide-voltage RCC non-isolated LED constant-current drive control circuit according to claim 1, characterized in that: the safety resistor FR1, the safety capacitor CX1 and the voltage dependent resistor ZR1 form an instantaneous surge pulse protection circuit.
3. The wide-voltage RCC non-isolated LED constant-current drive control circuit according to claim 2, characterized in that: the rectifier bridge DB1 and the electrolytic capacitor EC1 form an AC-to-DC energy conversion circuit to provide working energy for a post-stage circuit.
4. The wide-voltage RCC non-isolated LED constant-current drive control circuit according to claim 3, characterized in that: the transformer winding T1/A, the electrolytic capacitor EC2, the freewheeling diode D5 and the power output device MOS tube Q1 form an energy storage circuit to provide energy for the LED lamp bead string.
5. The wide-voltage RCC non-isolated LED constant-current drive control circuit according to claim 4, characterized in that: and the triode Q2, the triode Q3, the resistor R7, the resistor R9, the transformer winding T1/B and the capacitor C3 form a self-excited switch oscillation circuit.
6. The wide-voltage RCC non-isolated LED constant-current drive control circuit according to claim 5, characterized in that: the resistor R8, the resistor RS1 and the resistor RS2 form a current sampling circuit, and the size of the output current is determined.
7. The wide-voltage RCC non-isolated LED constant-current drive control circuit according to claim 6, characterized in that: the resistor R1 is a power supply resistor for the whole circuit to work.
8. The wide-voltage RCC non-isolated LED constant-current drive control circuit according to claim 7, characterized in that: the resistor R2, the resistor R3, the resistor R4, the resistor R5, the resistor R6, the zener diode ZD1, the triode Q4 and the capacitor C2 form a voltage compensation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121179990.1U CN215121269U (en) | 2021-05-30 | 2021-05-30 | Wide-voltage RCC non-isolated LED constant current drive control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121179990.1U CN215121269U (en) | 2021-05-30 | 2021-05-30 | Wide-voltage RCC non-isolated LED constant current drive control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN215121269U true CN215121269U (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121179990.1U Active CN215121269U (en) | 2021-05-30 | 2021-05-30 | Wide-voltage RCC non-isolated LED constant current drive control circuit |
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| CN (1) | CN215121269U (en) |
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2021
- 2021-05-30 CN CN202121179990.1U patent/CN215121269U/en active Active
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