CN211859971U - AC-DC conversion circuit - Google Patents
AC-DC conversion circuit Download PDFInfo
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- CN211859971U CN211859971U CN202020910670.8U CN202020910670U CN211859971U CN 211859971 U CN211859971 U CN 211859971U CN 202020910670 U CN202020910670 U CN 202020910670U CN 211859971 U CN211859971 U CN 211859971U
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Abstract
The utility model discloses an alternating current-direct current conversion circuit, including rectifier module BD1 and first inductance coils FL1, first inductance coils FL 1's first input end is connected with the L end of alternating current, first inductance coils FL 1's second input end is connected with the N end of alternating current; a first output end of the first inductance coil FL1 is connected with a first input end of the rectifier module BD1, and a second output end of the first inductance coil FL1 is connected with a second input end of the rectifier module BD 1; the first output end and the second output end of the rectifier module BD1 are output ends of an alternating current-direct current conversion circuit. The alternating current-direct current conversion circuit is high in electric energy conversion efficiency and stable in output.
Description
Technical Field
The utility model relates to a power supply technical field specifically says to an alternating current-direct current converting circuit.
Background
Along with the popularization of mobile phones, tablet computers and LED lamps, the application of power supplies is more and more extensive. In the application of a power supply, to convert alternating current into direct current to charge a load, the input voltage of the power supply needs to be suitable for wide alternating current power supply input of 100-240V. In the prior art, the rectifier bridge formed by connecting the four common diodes is directly utilized to convert alternating current into direct current, so that the electric energy conversion efficiency is low, and the generated interference waves are large, thereby influencing the stability of power output and further influencing the working reliability of electronic products.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a high and stable alternating current-direct current conversion circuit of output of electric energy conversion efficiency.
The technical proposal of the utility model is that an AC-DC conversion circuit is provided, which comprises a rectifier module BD1 and a first inductance coil FL1,
a first input end of the first inductance coil FL1 is connected with an L end of alternating current, and a second input end of the first inductance coil FL1 is connected with an N end of alternating current;
a first output end of the first inductance coil FL1 is connected with a first input end of the rectifier module BD1, and a second output end of the first inductance coil FL1 is connected with a second input end of the rectifier module BD 1; the first output end and the second output end of the rectifier module BD1 are output ends of an alternating current-direct current conversion circuit.
The alternating current-direct current conversion circuit further comprises a second inductance coil FL2, and the second inductance coil FL2 is connected between the rectifier module BD1 and the first inductance coil FL1 in series; a first input end of the second inductance coil FL2 is connected with a first output end of the first inductance coil FL1, and a second input end of the second inductance coil FL2 is connected with a second output end of the first inductance coil FL 1; a first output end of the second inductor FL2 is connected to a first input end of the rectifier module BD1, and a second output end of the second inductor FL2 is connected to a second input end of the rectifier module BD 1.
The alternating current-direct current conversion circuit further comprises a bidirectional suppression protection device MOV1, one end of the bidirectional suppression protection device MOV1 is connected with a first input end of the first inductance coil FL1, and the other end of the bidirectional suppression protection device MOV1 is connected with a second input end of the first inductance coil FL 1.
The alternating current-direct current conversion circuit further comprises a first fuse F1 and a second fuse F2, the first fuse F1 is connected between the L end of alternating current and one end of a bidirectional suppression protection device MOV1 in series, one end of the first fuse F1 is connected with the L end of the alternating current, and the other end of the first fuse F1 is connected with one end of a bidirectional suppression protection device MOV 1; the second fuse F2 is connected in series between the first input terminal of the first inductor FL1 and one terminal of the bidirectional suppression protection device MOV1, one terminal of the second fuse F2 is connected with the first input terminal of the first inductor FL1, and the other terminal of the second fuse F2 is connected with one terminal of the bidirectional suppression protection device MOV 1.
The alternating current-direct current conversion circuit further comprises a demagnetization device RT1, the demagnetization device RT1 is connected between the second input end of the first inductance coil FL1 and the other end of the bidirectional suppression protection device MOV1 in series, one end of the demagnetization device RT1 is connected with the second input end of the first inductance coil FL1, and the other end of the demagnetization device RT1 is connected with the other end of the bidirectional suppression protection device MOV 1.
The alternating current-direct current conversion circuit further comprises a filter capacitor C1, one end of the filter capacitor C1 is connected with a first output end of the first inductance coil FL1, and the other end of the filter capacitor C1 is connected with a second output end of the first inductance coil FL 1.
The alternating current-direct current conversion circuit further comprises a filter capacitor C2, one end of the filter capacitor C2 is connected with a first output end of the rectifier module BD1, and the other end of the filter capacitor C2 is connected with a second output end of the rectifier module BD 1.
The alternating current-direct current conversion circuit further comprises an electrolytic capacitor CE1, wherein the anode of the electrolytic capacitor CE1 is connected with the first output end of the rectifier module BD1, and the cathode of the electrolytic capacitor CE1 is connected with the second output end of the rectifier module BD 1.
After the structure more than adopting, compared with the prior art, the utility model, have following advantage:
the utility model discloses alternating current-direct current converting circuit passes through rectifier module, inductance coils, two-way suppression protection device, the application of demagnetization device, and the filtering has reduced the electric energy loss of interference wave in the circuit. Therefore, the electric energy conversion efficiency is high, and the generated interference waves are small, so that the stability of power output is ensured, and the working reliability of electronic products is further ensured.
Drawings
Fig. 1 is a schematic circuit diagram of the ac-dc conversion circuit of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
As shown in fig. 1, the present invention relates to an ac-dc conversion circuit, which includes a rectifier module BD1 and a first inductor FL1, wherein the model of the rectifier module BD1 is ABS 210.
A first input end of the first inductance coil FL1 is connected with an L end of alternating current, and a second input end of the first inductance coil FL1 is connected with an N end of alternating current;
a first output end of the first inductance coil FL1 is connected with a first input end of the rectifier module BD1, and a second output end of the first inductance coil FL1 is connected with a second input end of the rectifier module BD 1; the first output end and the second output end of the rectifier module BD1 are output ends of an alternating current-direct current conversion circuit.
The alternating current-direct current conversion circuit further comprises a second inductance coil FL2, and the second inductance coil FL2 is connected between the rectifier module BD1 and the first inductance coil FL1 in series; a first input end of the second inductance coil FL2 is connected with a first output end of the first inductance coil FL1, and a second input end of the second inductance coil FL2 is connected with a second output end of the first inductance coil FL 1; a first output end of the second inductor FL2 is connected to a first input end of the rectifier module BD1, and a second output end of the second inductor FL2 is connected to a second input end of the rectifier module BD 1.
The alternating current-direct current conversion circuit further comprises a bidirectional suppression protection device MOV1, in the embodiment, the bidirectional suppression protection device MOV1 is a bidirectional suppression protection diode, one end of the bidirectional suppression protection device MOV1 is connected with a first input end of the first inductance coil FL1, and the other end of the bidirectional suppression protection device MOV1 is connected with a second input end of the first inductance coil FL 1.
The alternating current-direct current conversion circuit further comprises a first fuse F1 and a second fuse F2, the first fuse F1 is connected between the L end of alternating current and one end of a bidirectional suppression protection device MOV1 in series, one end of the first fuse F1 is connected with the L end of the alternating current, and the other end of the first fuse F1 is connected with one end of a bidirectional suppression protection device MOV 1; the second fuse F2 is connected in series between the first input terminal of the first inductor FL1 and one terminal of the bidirectional suppression protection device MOV1, one terminal of the second fuse F2 is connected with the first input terminal of the first inductor FL1, and the other terminal of the second fuse F2 is connected with one terminal of the bidirectional suppression protection device MOV 1. The first fuse F1 and the second fuse F2 are used to prevent the short circuit from damaging the conversion circuit.
The alternating current-direct current conversion circuit further comprises a demagnetizing device RT1, and in the embodiment, the demagnetizing device RT1 is a demagnetizing resistor; the demagnetization device RT1 is connected in series between the second input end of the first inductance coil FL1 and the other end of the bidirectional suppression protection device MOV1, one end of the demagnetization device RT1 is connected with the second input end of the first inductance coil FL1, and the other end of the demagnetization device RT1 is connected with the other end of the bidirectional suppression protection device MOV 1.
The alternating current-direct current conversion circuit further comprises a filter capacitor C1, one end of the filter capacitor C1 is connected with a first output end of the first inductance coil FL1, and the other end of the filter capacitor C1 is connected with a second output end of the first inductance coil FL 1. The filter capacitor C1 is used for filtering.
The alternating current-direct current conversion circuit further comprises a filter capacitor C2, one end of the filter capacitor C2 is connected with a first output end of the rectifier module BD1, and the other end of the filter capacitor C2 is connected with a second output end of the rectifier module BD 1. The filter capacitor C2 is used for filtering.
The alternating current-direct current conversion circuit further comprises an electrolytic capacitor CE1, wherein the anode of the electrolytic capacitor CE1 is connected with the first output end of the rectifier module BD1, and the cathode of the electrolytic capacitor CE1 is connected with the second output end of the rectifier module BD 1. Electrolytic capacitor CE1 is used for filtering.
The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. However, all changes which come within the scope of the independent claims of the invention are to be embraced therein.
Claims (8)
1. An AC-DC conversion circuit, characterized in that: comprising a rectifier module BD1 and a first inductor FL1,
a first input end of the first inductance coil FL1 is connected with an L end of alternating current, and a second input end of the first inductance coil FL1 is connected with an N end of alternating current;
a first output end of the first inductance coil FL1 is connected with a first input end of the rectifier module BD1, and a second output end of the first inductance coil FL1 is connected with a second input end of the rectifier module BD 1; the first output end and the second output end of the rectifier module BD1 are output ends of an alternating current-direct current conversion circuit.
2. The ac-dc conversion circuit of claim 1, wherein: the alternating current-direct current conversion circuit further comprises a second inductance coil FL2, and the second inductance coil FL2 is connected between the rectifier module BD1 and the first inductance coil FL1 in series; a first input end of the second inductance coil FL2 is connected with a first output end of the first inductance coil FL1, and a second input end of the second inductance coil FL2 is connected with a second output end of the first inductance coil FL 1; a first output end of the second inductor FL2 is connected to a first input end of the rectifier module BD1, and a second output end of the second inductor FL2 is connected to a second input end of the rectifier module BD 1.
3. The ac-dc conversion circuit of claim 2, wherein: the alternating current-direct current conversion circuit further comprises a bidirectional suppression protection device MOV1, one end of the bidirectional suppression protection device MOV1 is connected with a first input end of the first inductance coil FL1, and the other end of the bidirectional suppression protection device MOV1 is connected with a second input end of the first inductance coil FL 1.
4. The ac-dc conversion circuit of claim 3, wherein: the alternating current-direct current conversion circuit further comprises a first fuse F1 and a second fuse F2, the first fuse F1 is connected between the L end of alternating current and one end of a bidirectional suppression protection device MOV1 in series, one end of the first fuse F1 is connected with the L end of the alternating current, and the other end of the first fuse F1 is connected with one end of a bidirectional suppression protection device MOV 1; the second fuse F2 is connected in series between the first input terminal of the first inductor FL1 and one terminal of the bidirectional suppression protection device MOV1, one terminal of the second fuse F2 is connected with the first input terminal of the first inductor FL1, and the other terminal of the second fuse F2 is connected with one terminal of the bidirectional suppression protection device MOV 1.
5. The ac-dc conversion circuit of claim 4, wherein: the alternating current-direct current conversion circuit further comprises a demagnetization device RT1, the demagnetization device RT1 is connected between the second input end of the first inductance coil FL1 and the other end of the bidirectional suppression protection device MOV1 in series, one end of the demagnetization device RT1 is connected with the second input end of the first inductance coil FL1, and the other end of the demagnetization device RT1 is connected with the other end of the bidirectional suppression protection device MOV 1.
6. The ac-dc conversion circuit of claim 5, wherein: the alternating current-direct current conversion circuit further comprises a filter capacitor C1, one end of the filter capacitor C1 is connected with a first output end of the first inductance coil FL1, and the other end of the filter capacitor C1 is connected with a second output end of the first inductance coil FL 1.
7. The ac-dc conversion circuit of claim 6, wherein: the alternating current-direct current conversion circuit further comprises a filter capacitor C2, one end of the filter capacitor C2 is connected with a first output end of the rectifier module BD1, and the other end of the filter capacitor C2 is connected with a second output end of the rectifier module BD 1.
8. The ac-dc conversion circuit of claim 7, wherein: the alternating current-direct current conversion circuit further comprises an electrolytic capacitor CE1, wherein the anode of the electrolytic capacitor CE1 is connected with the first output end of the rectifier module BD1, and the cathode of the electrolytic capacitor CE1 is connected with the second output end of the rectifier module BD 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020910670.8U CN211859971U (en) | 2020-05-26 | 2020-05-26 | AC-DC conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020910670.8U CN211859971U (en) | 2020-05-26 | 2020-05-26 | AC-DC conversion circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211859971U true CN211859971U (en) | 2020-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020910670.8U Active CN211859971U (en) | 2020-05-26 | 2020-05-26 | AC-DC conversion circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211859971U (en) |
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2020
- 2020-05-26 CN CN202020910670.8U patent/CN211859971U/en active Active
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