CN213342007U - Full-automatic plug-in components power adapter of no Y electric capacity - Google Patents
Full-automatic plug-in components power adapter of no Y electric capacity Download PDFInfo
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- CN213342007U CN213342007U CN202022390067.4U CN202022390067U CN213342007U CN 213342007 U CN213342007 U CN 213342007U CN 202022390067 U CN202022390067 U CN 202022390067U CN 213342007 U CN213342007 U CN 213342007U
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Abstract
The utility model discloses a full-automatic plug-in power adapter without Y capacitor, which comprises a commercial power input and anti-lightning circuit, an EMI filtering electromagnetic anti-interference circuit, a bridge rectifier filter circuit, a power transformer, an RCD high-voltage absorption circuit, a PWM IC switch control circuit, a secondary rectifier circuit and an output filter circuit; the output ends of the commercial power input and anti-lightning circuit are respectively connected with the input end of a bridge module DB1 of the EMI filtering electromagnetic anti-interference circuit; the bridge type rectifying and filtering circuit comprises two groups of rectifying and filtering circuits; the PWM IC switch control circuit comprises a control chip U1; the power transformer comprises a primary side, a secondary side and a primary side feedback winding. The utility model discloses have eliminate power frequency noise completely, to audio equipment do not produce the interference, the advantage such as no leakage and cost are lower, guaranteed full-automatic plug-in components function safety and stability operation, and working property is good.
Description
Technical Field
The utility model belongs to the technical field of power adapter, specifically relate to a full-automatic plug-in components power adapter of no Y electric capacity.
Background
The full-automatic plug-in power supply is mainly applied to LED lighting, LED display screens, LED control systems, LED car lamps, electric light sources, energy-saving lamps, outdoor lighting, street lamps, searchlights, lamp decoration accessories, ballasts, sound equipment and the like. The power supply without the Y capacitor can solve the problem of electromagnetic radiation, eliminate the adverse effect of power frequency noise in electrical equipment, improve the communication quality and the data transmission quality, and avoid the problem of electric leakage, so that the power supply without the Y capacitor is required to be used in many occasions.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned problem, provide a full-automatic plug-in components power adapter of no Y electric capacity, provide excellent performance's no Y electric capacity power for full-automatic plug-in components machine.
The utility model discloses a realize through following technical scheme:
a full-automatic plug-in power adapter without Y capacitor comprises a mains supply input and anti-lightning circuit, an EMI filtering electromagnetic anti-interference circuit, a bridge rectifier filter circuit, a power transformer, an RCD high-voltage absorption circuit, a PWM IC switch control circuit, a secondary rectifier circuit and an output filter circuit;
the EMI filtering electromagnetic anti-interference circuit comprises a bridge module DB1 and a bridge rectification filtering circuit; the output ends of the commercial power input and anti-lightning circuit are respectively connected with the input end of a bridge module DB1 of the EMI filtering electromagnetic anti-interference circuit; the bridge rectifier filter circuit comprises two groups of rectifier filter circuits, each group of rectifier filter circuits is formed by connecting an inductor and a resistor in parallel, one end of each group of rectifier filter circuits is connected with the output end of the bridge module DB1, and a capacitor C2 is connected between the other ends of the two groups of rectifier filter circuits; the PWM IC switch control circuit comprises a control chip U1; the power transformer comprises a primary side, a secondary side and a primary side feedback winding; one end of the primary side is connected with the anode of the capacitor C2, and the other end of the primary side is connected with the control chip U1; an RCD high-voltage absorption circuit is also connected between the input ends of the primary sides; the positive electrode of the working power supply of the control chip U1 is connected to the positive electrode of the capacitor C2 through the resistors R1 and R2 in sequence; one end of a primary side feedback winding of the power transformer is connected to the anode of a working power supply of the control chip U1 through a diode D2 and a resistor R6 in sequence, and the other end of the primary side feedback winding is grounded; a capacitor C9 is connected between the two ends of the primary side feedback winding; the positive output end of the primary side feedback winding is connected to a control chip U1 through a resistor R7 after passing through a parallel circuit of resistors R9 and R10; and the secondary output end of the power transformer forms output through a secondary rectifying circuit and an output filtering circuit in sequence.
Further, in the above full-automatic plug-in power adapter without Y capacitor, a thermorelay FR1 is connected in series between the commercial power input live wire end of the commercial power input and lightning stroke resisting circuit and the input end of the EMI filter electromagnetic anti-interference circuit; and a piezoresistor ZR1 is connected between the mains supply input end and the mains supply output end of the lightning-resistant line.
Further, in the fully automatic plug-in power adapter without Y capacitor, a capacitor C1 is connected between the output ends of the bridge module DB1 of the EMI filter electromagnetic interference circuit.
Further, in the fully automatic plug-in power adapter without the Y capacitor, the RCD high-voltage absorption circuit is formed by sequentially connecting a parallel circuit consisting of a capacitor C3 and a resistor R3 in series with a resistor R4 and a diode D1.
Further, in the above full-automatic card power adapter without Y capacitor, the secondary rectifying line includes a diode D3, and two ends of the diode D3 are connected in parallel with a series circuit composed of a capacitor C10 and a resistor R19.
Further, in the fully-automatic plug-in power adapter without the Y capacitor, the output filter circuit is formed by connecting the capacitor C5 and the capacitor C6 in parallel.
Further, in the fully automatic plug-in power adapter without the Y capacitor, a resistor R13 is connected between output ends of the output filter circuit.
Further, in the fully automatic plug-in power adapter without the Y capacitor, the positive electrode of the working power supply of the control chip U1 is grounded through a parallel circuit formed by the capacitors C4 and C8.
The utility model has the advantages that: the utility model discloses have eliminate power frequency noise completely, to audio equipment do not produce the interference, the advantage such as no leakage and cost are lower, guaranteed full-automatic plug-in components function safety and stability operation, and working property is good.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
In the figure, 10, a mains supply input and lightning stroke resisting circuit, 20, an EMI filtering electromagnetic anti-interference circuit, 30, a bridge rectifier filter circuit, 40, a power transformer, 50, an RCD high-voltage absorption circuit, 60, a PWM IC switch control circuit, 70, a secondary rectifier circuit, 80 and an output filter circuit.
Detailed Description
The invention will be further described with reference to the following specific examples and the accompanying drawings.
As shown in fig. 1-2, a full-automatic plug-in power adapter without Y capacitor includes a mains supply input and anti-lightning circuit 10, an EMI filtering electromagnetic interference-free circuit 20, a bridge rectifier filter circuit 30, a power transformer 40, an RCD high-voltage absorption circuit 50, a PWM IC switch control circuit 60, a secondary rectifier circuit 70, and an output filter circuit 80.
The EMI filtering electromagnetic anti-jamming circuit 20 comprises a bridge module DB1 and a bridge rectifier filtering circuit 30; the output ends of the commercial power input and anti-lightning circuit 10 are respectively connected with the input end of the bridge module DB1 of the EMI filtering electromagnetic anti-interference circuit 20; the bridge rectifier and filter circuit 30 comprises two groups of rectifier and filter circuits, each group of rectifier and filter circuits is formed by connecting an inductor and a resistor in parallel, the first group of rectifier and filter circuits is formed by connecting an inductor L1 and a resistor R12 in parallel, the second group of rectifier and filter circuits is formed by connecting an inductor L2 and a resistor R14 in parallel, one ends of the two groups of rectifier and filter circuits are respectively connected with the output end of the bridge module DB1, and a capacitor C1 is connected between the other ends of the two groups of rectifier and filter circuits; the PWM IC switch control circuit 60 includes a control chip U1; the power transformer 40 comprises a primary side, a secondary side and a primary side feedback winding; one end of the primary side is connected with the anode of the capacitor C2, and the other end of the primary side is respectively connected with a pin 5 and a pin 6 of the control chip U1; an RCD high-voltage absorption circuit 50 is also connected between the input ends of the primary sides; the positive electrode of the working power supply of the control chip U1 is connected to the positive electrode of the capacitor C2 through the resistors R1 and R2 in sequence; one end of a primary side feedback winding of the power transformer 40 is connected to the anode of a working power supply of the control chip U1 through a diode D2 and a resistor R6 in sequence, and the other end of the primary side feedback winding is grounded; a capacitor C9 is connected between the two ends of the primary side feedback winding; the positive output end of the primary side feedback winding is connected to the 2 corner and the 3 corner of the U1 of the control chip through the resistors R7 and R21 respectively after passing through the parallel circuit of the resistors R9 and R10; the secondary output end of the power transformer 40 finally forms an output through the secondary rectifying line 70 and the output filtering line 80 in sequence.
A thermal relay FR1 is connected in series between a mains supply input fire wire end of the mains supply input and lightning protection circuit 10 and an input end of the EMI filtering electromagnetic anti-interference circuit 20; and a piezoresistor ZR1 is connected between the mains supply input and the mains supply output end of the lightning-resistant line 10.
And a capacitor C1 is connected between the output ends of the bridge module DB1 of the EMI filtering electromagnetic interference resisting circuit 20.
The RCD high-voltage absorption circuit 50 is formed by sequentially connecting a parallel circuit consisting of a capacitor C3 and a resistor R3 with a resistor R4 and a diode D1 in series.
The secondary rectifying circuit 70 comprises a diode D3, and a series circuit composed of a capacitor C10 and a resistor R19 is connected in parallel to two ends of the diode D3.
The output filter circuit 80 is formed by connecting a capacitor C5 and a capacitor C6 in parallel.
A resistor R13 is connected between the output ends of the output filter line 80.
The secondary rectifier circuit 70 is connected between the positive terminal of the secondary output of the power transformer 40 and the positive input of the output filter circuit 80.
The anode of the working power supply of the control chip U1 is grounded through a parallel circuit consisting of capacitors C4 and C8.
The 4 corners of the control chip U1 are grounded through a parallel circuit composed of a resistor R5 and a resistor R8, and the 8 corners are directly grounded.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention, and those skilled in the art should be equivalent replacement modes without departing from the spirit and principles of the present invention.
Claims (8)
1. The utility model provides a full-automatic plug-in components power adapter of no Y electric capacity which characterized in that: the power supply circuit comprises a mains supply input and lightning stroke resisting circuit (10), an EMI filtering electromagnetic anti-interference circuit (20), a bridge rectifier filter circuit (30), a power transformer (40), an RCD high-voltage absorption circuit (50), a PWM IC switch control circuit (60), a secondary rectifier circuit (70) and an output filter circuit (80);
the EMI filtering electromagnetic interference rejection circuit (20) comprises a bridge module DB1 and a bridge rectifier filter circuit (30); the output ends of the commercial power input and lightning-resistant circuit (10) are respectively connected with the input end of a bridge module DB1 of the EMI filtering electromagnetic anti-interference circuit (20); the bridge rectifier filter circuit (30) comprises two groups of rectifier filter circuits, each group of rectifier filter circuits is formed by connecting an inductor and a resistor in parallel, one end of each of the two groups of rectifier filter circuits is connected with the output end of the bridge module DB1, and a capacitor C2 is connected between the other ends of the two groups of rectifier filter circuits; the PWM IC switch control circuit (60) comprises a control chip U1; the power transformer (40) comprises a primary side, a secondary side and a primary side feedback winding; one end of the primary side is connected with the anode of the capacitor C2, and the other end of the primary side is connected with the control chip U1; an RCD high-voltage absorption circuit (50) is also connected between the input ends of the primary sides; the positive electrode of the working power supply of the control chip U1 is connected to the positive electrode of the capacitor C2 through the resistors R1 and R2 in sequence; one end of a primary side feedback winding of the power transformer (40) is connected to the anode of a working power supply of the control chip U1 sequentially through a diode D2 and a resistor R6, and the other end of the primary side feedback winding is grounded; a capacitor C9 is connected between the two ends of the primary side feedback winding; the positive output end of the primary side feedback winding is connected to a control chip U1 through resistors R7 and R21 respectively after passing through a parallel circuit of resistors R9 and R10; and the secondary output end of the power transformer (40) forms output through a secondary rectifying line (70) and an output filtering line (80) in sequence.
2. The fully automatic plug-in power adapter without Y capacitor according to claim 1, wherein a thermal relay FR1 is connected in series between the mains input live wire end of the mains input and anti-lightning circuit (10) and the input end of the EMI filtered electromagnetic interference resistant circuit (20); and a piezoresistor ZR1 is connected between the mains supply input end and the mains supply output end of the lightning-resistant line (10).
3. The full-automatic plug-in power adapter of no Y electric capacity of claim 1, characterized by: and a capacitor C1 is connected between the output ends of the bridge module DB1 of the EMI filtering electromagnetic anti-interference circuit (20).
4. The full-automatic plug-in power adapter of no Y electric capacity of claim 1, characterized by: the RCD high-voltage absorption circuit (50) is formed by sequentially connecting a parallel circuit consisting of a capacitor C3 and a resistor R3 with a resistor R4 and a diode D1 in series.
5. The full-automatic plug-in power adapter of no Y electric capacity of claim 1, characterized by: the secondary rectifying circuit (70) comprises a diode D3, and a series circuit consisting of a capacitor C10 and a resistor R19 is connected in parallel with two ends of a diode D3.
6. The full-automatic plug-in power adapter of no Y electric capacity of claim 1, characterized by: the output filter circuit (80) is formed by connecting a capacitor C5 and a capacitor C6 in parallel.
7. The full-automatic plug-in power adapter of no Y electric capacity of claim 1, characterized by: and a resistor R13 is connected between the output ends of the output filter circuit (80).
8. The full-automatic plug-in power adapter of no Y electric capacity of claim 1, characterized by: the anode of the working power supply of the control chip U1 is grounded through a parallel circuit consisting of capacitors C4 and C8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022390067.4U CN213342007U (en) | 2020-10-25 | 2020-10-25 | Full-automatic plug-in components power adapter of no Y electric capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022390067.4U CN213342007U (en) | 2020-10-25 | 2020-10-25 | Full-automatic plug-in components power adapter of no Y electric capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213342007U true CN213342007U (en) | 2021-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022390067.4U Active CN213342007U (en) | 2020-10-25 | 2020-10-25 | Full-automatic plug-in components power adapter of no Y electric capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213342007U (en) |
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2020
- 2020-10-25 CN CN202022390067.4U patent/CN213342007U/en active Active
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