CN204633629U - Table top type multi output USB power source - Google Patents
Table top type multi output USB power source Download PDFInfo
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- CN204633629U CN204633629U CN201520351429.5U CN201520351429U CN204633629U CN 204633629 U CN204633629 U CN 204633629U CN 201520351429 U CN201520351429 U CN 201520351429U CN 204633629 U CN204633629 U CN 204633629U
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Abstract
The utility model discloses a kind of Table top type multi output USB power source and comprise an importation, one step-down part and an output, described importation, step-down part and output are electrically connected successively, described output comprises AC input circuit and an EMI filter circuit of an electric connection, described decompression portion is divided and is comprised a full bridge rectifier, a level filter circuit, one pwm control circuit, one opto-coupled feedback circuit, one testing circuit, one high efficiency rectification circuit, full bridge rectifier is connected to secondary filter circuit, opto-coupled feedback circuit is connected to full bridge rectifier by pwm control circuit, testing circuit is connected to the output of full bridge rectifier, EMI filter circuit output is connected to the input of full bridge rectifier, high efficiency rectification circuit is connected to secondary filter circuit, output comprises an output circuit and a charging intelligent identifying circuit, charging intelligent identifying circuit is connected to output circuit, output circuit is connected to opto-coupled feedback circuit, testing circuit comprises a switching circuit.The simple and practical property of Table top type multi output USB power source circuit design is good, and it has multiple USB output, is convenient to charging.
Description
Technical field
The utility model relates to field of power supplies, particularly relates to a kind of Table top type multi output USB power source.
Background technology
Popularizing at present along with a large amount of individual mobile electronic devices, such as mobile phone, panel computer, music player etc., time most of, we can run into multiple mobile electronic device needs to charge simultaneously.And most charging device can only charge to a mobile electronic device simultaneously, when multiple stage mobile electronic device needs to charge, then by different charging devices, mobile electronic device is charged, like this, charging device circuit is disorderly and unsystematic, take up room large, be unfavorable for room clean and tidy while, also there is many potential safety hazards in it.Like this, we be really eager design a kind of new charging device solve the problems referred to above.
Utility model content
For overcoming the problem of charging device complex circuit existing in existing life, the utility model provides a kind of Table top type multi output USB power source.
The utility model provides a kind of technical scheme solved the problems of the technologies described above: provide a kind of Table top type multi output USB power source to comprise an importation, one step-down part and an output, described importation, step-down part and output are electrically connected successively, described output comprises AC input circuit and an EMI filter circuit of an electric connection, described decompression portion is divided and is comprised a full bridge rectifier, a level filter circuit, one pwm control circuit, one opto-coupled feedback circuit, one testing circuit, one high efficiency rectification circuit, full bridge rectifier is connected to secondary filter circuit, opto-coupled feedback circuit is connected to full bridge rectifier by pwm control circuit, testing circuit is connected to the output of full bridge rectifier, EMI filter circuit output is connected to the input of full bridge rectifier, high efficiency rectification circuit is connected to secondary filter circuit, output comprises an output circuit and a charging intelligent identifying circuit, charging intelligent identifying circuit is connected to output circuit, output circuit is connected to opto-coupled feedback circuit, testing circuit comprises a switching circuit, output circuit is provided with multiple USB Connection Block.
Best, testing circuit comprises resistance R6, R35, R36, R37 electric capacity C4, resistance R35, one end ground connection after R36, R37 parallel connection, and the other end is connected with switching circuit and passes through resistance R6 and is connected with electric capacity C4, the other end ground connection of C4.
Best, output comprises socket CN1, protective tube F1, piezo-resistance RV1, electric capacity CY2, CY3, CX1, transformer L1, L2, resistance R1, R2, described socket CN1 comprises lead-out terminal 1, 3, described lead-out terminal 1, be connected with piezo-resistance RV1 two ends respectively after one end serial connection protective tube F1 of 3, again with the electric capacity CY2 be connected in series, CY3 two ends are connected to transformer L1 input after connecting, electric capacity CY2, earth terminal is provided with between CY3, transformer L1 output and the resistance R1 connected, R2 is connected with electric capacity CX1 after connecting again, electric capacity CX1 two ends are connected with transformer L2 input again.
Compared with prior art, the utility model Table top type multi output USB power source is provided with multiple USB Connection Block, USB Connection Block correspondence is provided with charging intelligent identifying circuit, can be stable charge for multiple electronic equipment, its circuit safety coefficient is high, practicality is good, has boundless application prospect.
Accompanying drawing explanation
Fig. 1 is the circuit modular structure schematic diagram of the utility model Table top type multi output USB power source.
Fig. 2 is the circuit diagram of the utility model Table top type multi output USB power source.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage are clearly understood, below in conjunction with accompanying drawing and embodiment, are further elaborated to the utility model.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, the utility model Table top type multi output USB power source 10 comprises importation 20, step-down part 30 and an output 40, and described importation 20, step-down part 30 and output 40 are electrically connected successively.Described output 20 comprises AC input circuit 22 and an EMI filter circuit 21 of an electric connection, described step-down part 30 comprises a full bridge rectifier 31, a level filter circuit 34, one pwm control circuit 32, one opto-coupled feedback circuit 33, one testing circuit 36, one high efficiency rectification circuit 35, full bridge rectifier 31 is connected to secondary filter circuit 34, opto-coupled feedback circuit 33 is connected to full bridge rectifier 31 by pwm control circuit 32, testing circuit 36 is connected to the output of full bridge rectifier 31, EMI filter circuit 21 output is connected to the input of full bridge rectifier 31.High efficiency rectification circuit 35 is connected to secondary filter circuit 34.Output 40 comprises output circuit 41 and a charging intelligent identifying circuit 42, and charging intelligent identifying circuit 42 is connected to output circuit 41.Output circuit 41 is connected to opto-coupled feedback circuit 33.Testing circuit 36 comprises a switching circuit (not shown).
Described AC power carries out filtering by EMI filter circuit 21 after AC input circuit 22 accesses, filtering is carried out at secondary filter circuit place after the signal of telecommunication that full bridge rectifier 31 pairs of EMI filter circuit 21 transmit carries out rectification, opto-coupled feedback circuit 33 gathers the signal of telecommunication of output circuit 41 and feeds back to pwm control circuit 32, pwm control circuit 32 controls according to feedback signal the signal of telecommunication that full-bridge controls rectification circuit 31 and regulates it to output signal, the output signal of testing circuit 36 pairs of full bridge rectifiers 31 detects, it comprises a switching circuit, when the output signal of full bridge rectifier 31 exists abnormal time, switching circuit shuts down charging process.Being connected to secondary filter circuit 34 and improving the operating efficiency of Table top type multi output USB power source 10 of high efficiency rectification circuit 35.The intelligent identifying circuit 42 that charges carries out detecting the output signal size of also regulation output circuit 41 to carry out self adaptation charging to electronic equipment to the electronic equipment be connected on output circuit 41.
Refer to Fig. 2, importation 20 is made up of socket CN1, protective tube F1, electric capacity CX1, transformer L1, transformer L2, resistance R1, resistance R2, and alternating current is entered by CN1 and F1, and CX1, L1, L2, R1, R2 play EMI filtering, step-down part 30 is by rectifier bridge BD1, electric capacity C1, transformer T1, resistance R3, resistance R12, chip U1, resistance R35, resistance R36 and resistance R37, triode Q1, diode D6, triode Q2, electric capacity C9, electric capacity C10, electric capacity C13, chip U4, resistance R20, resistance R22, chip U2, optocoupler OP1, USB Connection Block J1, J2, J3, J4 and J5, chip U4, the compositions such as U9, alternating current enters switch transformer and starts U1 by R3 and R12 simultaneously after BD1 and C1 rectifying and wave-filtering, the 6th pin output drive signal of U1 is to Q1, it is made to work on off state, switching pulse is through the step-down of T1 coupled secondary, the direct voltage of 5V is exported again through D6, C9, C10, C13 rectifying and wave-filtering, U4 and Q2 forms the operating efficiency that circuit of synchronous rectification improves power supply, and output voltage feeds back to U1 by R20, R22, U2, OP1 and makes output voltage stabilization, resistance R35, resistance R36 and resistance R37, C4 form current detecting, when U1 detects output short-circuit or exception time, just turn off output.Output is made up of J1, J2, J3, J4 and U4, U5, USB Connection Block J1, J2, J3, J4, and J5 can give different equipment charges respectively.
Testing circuit R35, R36 are with one end ground connection after R37 parallel connection, and the other end is connected with switching circuit and passes through resistance R6 and is connected with electric capacity C4, the other end ground connection of C4.
Output comprises socket CN1, described socket CN1 comprises lead-out terminal 1,3, described lead-out terminal 1, is connected with piezo-resistance RV1 two ends respectively after one end serial connection protective tube F1 of 3, then with the electric capacity CY2 be connected in series, be connected to transformer L1 input after the connection of CY3 two ends, earth terminal is provided with between CY2, CY3.Transformer L1 output is connected with electric capacity CX1 after connecting with the R1 connected, R2 again, and electric capacity CX1 two ends are connected with transformer L2 input again.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all any amendments done within principle of the present utility model, equivalent replacement and improvement etc. all should comprise within protection range of the present utility model.
Claims (3)
1. a Table top type multi output USB power source comprises an importation, one step-down part and an output, described importation, step-down part and output are electrically connected successively, it is characterized in that: described output comprises AC input circuit and an EMI filter circuit of an electric connection, described decompression portion is divided and is comprised a full bridge rectifier, a level filter circuit, one pwm control circuit, one opto-coupled feedback circuit, one testing circuit, one high efficiency rectification circuit, full bridge rectifier is connected to secondary filter circuit, opto-coupled feedback circuit is connected to full bridge rectifier by pwm control circuit, testing circuit is connected to the output of full bridge rectifier, EMI filter circuit output is connected to the input of full bridge rectifier, high efficiency rectification circuit is connected to secondary filter circuit, output comprises an output circuit and a charging intelligent identifying circuit, charging intelligent identifying circuit is connected to output circuit, output circuit is connected to opto-coupled feedback circuit, testing circuit comprises a switching circuit, output circuit is provided with multiple USB Connection Block.
2. Table top type multi output USB power source as claimed in claim 1, is characterized in that: testing circuit comprises resistance R6, R35, R36, R37 electric capacity C4, resistance R35, R36, one end ground connection after R37 parallel connection, the other end is connected with switching circuit and passes through resistance R6 and is connected with electric capacity C4, the other end ground connection of C4.
3. Table top type multi output USB power source as claimed in claim 1, it is characterized in that: output comprises socket CN1, protective tube F1, piezo-resistance RV1, electric capacity CY2, CY3, CX1, transformer L1, L2, resistance R1, R2, described socket CN1 comprises lead-out terminal 1, 3, described lead-out terminal 1, be connected with piezo-resistance RV1 two ends respectively after one end serial connection protective tube F1 of 3, again with the electric capacity CY2 be connected in series, CY3 two ends are connected to transformer L1 input after connecting, electric capacity CY2, earth terminal is provided with between CY3, transformer L1 output and the resistance R1 connected, R2 is connected with electric capacity CX1 after connecting again, electric capacity CX1 two ends are connected with transformer L2 input again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520351429.5U CN204633629U (en) | 2015-05-27 | 2015-05-27 | Table top type multi output USB power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520351429.5U CN204633629U (en) | 2015-05-27 | 2015-05-27 | Table top type multi output USB power source |
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| Publication Number | Publication Date |
|---|---|
| CN204633629U true CN204633629U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520351429.5U Active CN204633629U (en) | 2015-05-27 | 2015-05-27 | Table top type multi output USB power source |
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| Country | Link |
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| CN (1) | CN204633629U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967295A (en) * | 2015-06-12 | 2015-10-07 | 深圳大学 | Medium and small power voltage booster capable of adjusting positive and negative high voltage output |
-
2015
- 2015-05-27 CN CN201520351429.5U patent/CN204633629U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967295A (en) * | 2015-06-12 | 2015-10-07 | 深圳大学 | Medium and small power voltage booster capable of adjusting positive and negative high voltage output |
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| GR01 | Patent grant |