CN207835357U - A kind of ac conversion circuit - Google Patents
A kind of ac conversion circuit Download PDFInfo
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- CN207835357U CN207835357U CN201820072490.XU CN201820072490U CN207835357U CN 207835357 U CN207835357 U CN 207835357U CN 201820072490 U CN201820072490 U CN 201820072490U CN 207835357 U CN207835357 U CN 207835357U
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Abstract
The utility model discloses a kind of ac conversion circuits, including AC input, AC output ends, Intelligent conversion circuit, voltage sampling circuit and governor circuit；Intelligent conversion circuit is converted into normal voltage for being exported the normal voltage that AC input inputs to AC output ends by master control circuit control, by the off-standard voltage that AC input inputs and exports to AC output ends；Voltage sampling circuit is used to sample the voltage of the voltage and Intelligent conversion circuit output of AC input input；AC signal intelligent conversion is realized by voltage sampling circuit, governor circuit and Intelligent conversion circuit, to export different alternating voltages so that electrical equipment is adapted to different national grid parameters.
Description
Technical field
The utility model is related to voltage conversion art, especially a kind of ac conversion circuit.
Background technology
With the development of science and technology, various electrical equipments emerge one after another, and entrance is carried out in the world
Transaction.And the electrical network parameter of country variant is different, such as the high-power pure perception or resistive load of the power grid country of 110VAC are set
Standby (such as 110VAC hair-dryers, heater of hair straightener, coffee machine), exporting to the power grid country of 220VAC can not then use, and cause resource
Waste, and the using experience degree of user is low.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide a kind of ac conversion circuit, for carrying out
AC signal is converted, and to export different alternating voltages, adapts to different national grid parameters.
Technical solution used by the utility model is：A kind of ac conversion circuit, including AC input, AC output ends,
Intelligent conversion circuit, voltage sampling circuit and governor circuit；The Intelligent conversion circuit is used for by master control circuit control that AC is defeated
The normal voltage for entering end input is exported to AC output ends, and the off-standard voltage that AC input inputs is converted into normal voltage output
To AC output ends；The voltage sampling circuit is used to sample the electricity of the voltage and Intelligent conversion circuit output of AC input input
Pressure；
The AC input is connect with the input terminal of AC output ends, Intelligent conversion circuit, the Intelligent conversion circuit it is defeated
Outlet is connect with AC output ends, and the input terminal of the AC input, the output end of Intelligent conversion circuit and voltage sampling circuit connects
It connects, the output end of the voltage sampling circuit and the input terminal of governor circuit connect, the output end and intelligence of the governor circuit
The input terminal of conversion circuit connects.
Further, the ac conversion circuit further includes overvoltage crowbar, and the AC input passes through overvoltage protection
Circuit is connect with AC output ends, and the output end of the governor circuit and the input terminal of overvoltage crowbar connect.
Further, the ac conversion circuit further includes temperature sensing circuit and fan control circuitry, the temperature inspection
Slowdown monitoring circuit is used to detect the temperature of the working environment of ac conversion circuit；The output end and governor circuit of the temperature sensing circuit
Input terminal connection, the input terminal of the output end of the governor circuit and fan control circuitry connects.
Further, the Intelligent conversion circuit includes silicon-controlled and relay, the AC input by it is silicon-controlled with
AC output ends connect, and the AC input is connect by relay with AC output ends, the governor circuit and silicon-controlled, relay
Connection is to control their break-make.
Further, the governor circuit is microcontroller and its peripheral circuit.
Further, the ac conversion circuit further includes current rectifying and wave filtering circuit, AC-DC conversion circuits, rectifying and wave-filtering list
The input terminal of member and DC output circuits, the AC input and current rectifying and wave filtering circuit connects, the output of the current rectifying and wave filtering circuit
End is connect with the input terminal of AC-DC conversion circuits, the input terminal of the output end and rectification filtering unit of the AC-DC conversion circuits
Connection, the output end of the rectification filtering unit are connect with the input terminal of DC output circuits.
Further, the AC-DC conversion circuits are OB2281 chips and its peripheral circuit.
Further, the rectification filtering unit includes the first current rectifying and wave filtering circuit and the second current rectifying and wave filtering circuit, described
DC output circuits include the first DC output circuits and the 2nd DC output circuits, the output end and first of the AC-DC conversion circuits
The input terminal connection of the input terminal of current rectifying and wave filtering circuit, the second current rectifying and wave filtering circuit, the output of first current rectifying and wave filtering circuit
End is connect with the input terminal of the first DC output circuits, the output end of second current rectifying and wave filtering circuit and the 2nd DC output circuits
Input terminal connects.
Further, the ac conversion circuit further includes voltage feedback circuit, first current rectifying and wave filtering circuit it is defeated
The input terminal of outlet, the output end of the second current rectifying and wave filtering circuit and voltage feedback circuit connects, the voltage feedback circuit it is defeated
Outlet is connect with the input terminal of AC-DC conversion circuits.
Further, the first DC output circuits are USB interface and USB identification chips and its peripheral circuit, described the
The output end of one current rectifying and wave filtering circuit is connect with the input terminal of USB identification chips, and the USB identification chips are connect with USB interface.
The utility model has the beneficial effects that：
A kind of ac conversion circuit of the utility model, including AC input, AC output ends, Intelligent conversion circuit, voltage are adopted
Sample circuit and governor circuit；Intelligent conversion circuit be used for by master control circuit control by the normal voltage that AC input inputs export to
The off-standard voltage that AC input inputs is converted into normal voltage and exported to AC output ends by AC output ends；Voltage sampling circuit
The voltage of voltage and Intelligent conversion circuit output for sampling AC input input；Pass through voltage sampling circuit, governor circuit
AC signal intelligent conversion is realized with Intelligent conversion circuit, to export different alternating voltages so that electrical equipment is adapted to
Different national grid parameters.
Description of the drawings
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is an a kind of specific embodiment structure diagram of ac conversion circuit of the utility model；
Fig. 2 and Fig. 3 is an a kind of specific embodiment circuit diagram of ac conversion circuit of the utility model.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
A kind of ac conversion circuit, with reference to figure 1, Fig. 1 is an a kind of specific implementation of ac conversion circuit of the utility model
Example structure diagram, ac conversion circuit includes AC input 1, AC output ends 3, Intelligent conversion circuit 4,5 and of voltage sampling circuit
Governor circuit 8；Intelligent conversion circuit 4 is used to be exported the normal voltage that AC input 1 inputs by the control of governor circuit 8 defeated to AC
The off-standard voltage that AC input 1 inputs is converted into normal voltage and exported to AC output ends 3 by outlet 3；Voltage sampling circuit 5
The voltage that voltage and Intelligent conversion circuit 4 for sampling the input of AC input 1 export；
AC input 1 is connect with the input terminal of AC output ends 3, Intelligent conversion circuit 4, the output end of Intelligent conversion circuit 4
Connect with AC output ends 3, AC input 1, Intelligent conversion circuit 4 output end connect with the input terminal of voltage sampling circuit 5, electricity
The output end of pressure sample circuit 5 is connect with the input terminal of governor circuit 8, output end and the Intelligent conversion circuit 4 of governor circuit 8
Input terminal connects.
The utility model realizes that AC signal intelligently turns by voltage sampling circuit, governor circuit and Intelligent conversion circuit
It changes, to export different alternating voltages, power supply is connect by the ac conversion circuit of the utility model with electrical equipment, and friendship is utilized
Stream conversion circuit makes electrical equipment be adapted to different national grid parameters.
As being further improved for technical solution, with reference to figure 1, ac conversion circuit further includes overvoltage crowbar 2, and AC is defeated
Enter end 1 to connect with AC output ends 3 by overvoltage crowbar 2, the input of the output end and overvoltage crowbar 2 of governor circuit 5
End connection.
Specifically, with reference to figure 2, Fig. 2 and Fig. 3 are an a kind of specific embodiment circuits of ac conversion circuit of the utility model
Schematic diagram, AC input 1 include JP1 interfaces, fuse F1 and lightning protection circuit, and L lines, the N lines of AC power are connected by JP1 interfaces
It is connected to fuse F1 and lightning protection circuit, lightning protection circuit includes varistor RV1, RV2, RV3 and discharge tube MOV1, meanwhile, N lines connect
It is connected to the input terminal (NO at the ends T1 of silicon-controlled Q3 and the second relay K2 i.e. in Intelligent conversion circuit 4 of Intelligent conversion circuit 4
End).AC output ends 3 include JP2 interfaces and resistance R3, which carries when AC output ends 3 do not connect load for voltage sampling circuit
For current loop.The ends OUT_L of AC output ends 3 are connected to the ends NC of the first relay K1 of overvoltage crowbar 2 simultaneously, and AC is defeated
The ends OUT_N of outlet 3 are connected to the ends T2 at the ends COM and silicon-controlled Q3 of the second relay K2 of Intelligent conversion circuit 4.Overvoltage is protected
Protection circuit 2 includes that the ends COM of the first relay K1, the first relay K1 are connected to fuse F1, the ends NC of the first relay K1
It is connected to the ends OUT_L of AC output ends 3；First relay K1 controls break-make by governor circuit 8, and governor circuit 8 exported
It presses protection signal OUT3 to drive triode Q1 by resistance R1, R2 and controls the break-make of the first relay K1, closed when reaching overvoltage
The purpose of disconnected output.
With reference to figure 2, voltage sampling circuit 5 includes tri- sampled signals of D_VIN, D_OUT, ZERO.D_VIN、D_OUT、
Tri- sampled signals of ZERO are sent into governor circuit 8 (the microcontroller IC1 for being sent into governor circuit 8)；D_VIN samples AC input 1
Input voltage signal, pass through diode D2, divider resistance R7, R10, R12 and filter capacitor C2 and realize sampling；D_OUT is sampled
The output voltage signal of AC output ends 3 realizes sampling by diode D3, divider resistance R9, R11, R13 and filter capacitor C3；
ZERO samples zero cross signal, is realized by resistance R4, R8, and ZERO signals are input to the ZERO pins of microcontroller IC1.The present embodiment
In, governor circuit 8 is microcontroller IC1 and its peripheral circuit.Specifically, microcontroller IC1 using SN8F570213S microcontrollers come real
It is existing, the circuit signal of the detection or sample circuit that microcontroller IC1 is connected by external pin (such as voltage sampling circuit 5 is defeated
The signal entered), processing of the internal digital control circuit through microcontroller IC1 to circuit signal reaches control Intelligent conversion circuit 4
Work purpose, and then realize intelligent control AC output ends output voltage signal.In addition, governor circuit further includes by touching
The trigger circuit and AC output state LED indicating circuits of switch S1 compositions, AC output state LED indicating circuits include a red
LED light and a blue LED lamp, are used to indicate the output state of AC output ends.
With reference to figure 2, Intelligent conversion circuit 4 includes that silicon-controlled Q3 and the second relay K2, AC input 1 pass through silicon-controlled 3
It being connect with AC output ends 3, AC input 1 is connect by the second relay K2 with AC output ends 3, governor circuit 8 and silicon-controlled Q3,
Second relay K2 connections are to control their break-make, and specifically, governor circuit exports OU1 and OUT2 two signals respectively pair can
Control silicon Q3, the second relay K2 carries out break-make control.When AC input 1 is that high voltage inputs, OUT1 buck signals pass through electricity
Resistance R6, R5 driving triode Q2 controls the angle of flow of silicon-controlled Q3 by resistance R14, R15 and filter capacitor C1 again, reaches high electricity
The purpose of reduced output voltage is realized when pressure input through silicon-controlled Q3；When AC input 1 is that low-voltage inputs, OUT2 switching signals are logical
Cross resistance R17, R18 driving triode Q4 and control the break-make of the second relay K2, when reaching low-voltage input output follow defeated
The purpose entered.
Specifically, with reference to figure 2, the course of work of Intelligent conversion circuit 4 is as follows：The microcontroller main control chip of governor circuit is first
The trigger signal of KEY pins detection trigger circuit is first passed through, microcontroller IC1 is detected by D_VIN pins after S1 triggering bootings
AC input 1 input voltage, and it is compared with the reference voltage of inner setting and judges the defeated of AC input 1
Enter the height of voltage.If judge the input voltage of AC input 1 for high voltage (such as 220VAC, i.e. off-standard voltage, this voltage
Size can be freely arranged), microcontroller IC1 detects zero cross signal by ZERO pins, and controls once for every half and export one admittedly
Surely the OUT1 buck signals being delayed control the conducting of silicon-controlled Q3 through output switching circuit, and by controlling leading for silicon-controlled Q3
High voltage (220VAC) input is converted into low-voltage (110VAC) output by current flow angle, achievees the purpose that lowering and stabilizing blood pressure.If judging defeated
It is low-voltage (size of 110VAC, i.e. normal voltage, this voltage can also be freely arranged) to enter voltage, and microcontroller IC1 passes through
OUT2 pins export switching signal through control the second relay K2 conductings of Intelligent conversion circuit 4, reach straight when inputting low-voltage
Connect the purpose for being output to output end.Therefore the reference of microcontroller IC1 and the connection and internal processes setting of external each circuit signal
Signal compares the purpose, it can be achieved that input voltage intelligent conversion.
As being further improved for technical solution, with reference to figure 1 and Fig. 2, ac conversion circuit further includes temperature sensing circuit 7
With fan control circuitry 9, temperature sensing circuit 7 is used to detect the temperature of the working environment of ac conversion circuit；Temperature detection electricity
The output end on road 7 is connect with the input terminal of governor circuit 8, and the output end of governor circuit 8 connects with the input terminal of fan control circuitry 9
It connects.Wherein, the D_NTC temperature detection signals of temperature sensing circuit 7 are to divide filtered electricity by resistance R22 and thermistor RT1
Hold C4 composition temperature sensing circuits to provide, while temperature detection signal is connected to the D_NTC pins of microcontroller IC1.And for wind
Control circuit is fanned, microcontroller IC1 exports control signal by FAN pins and is output to optocoupler PC1 through resistance R16, and passes through resistance
R20, R21 drive triode Q3, achieve the purpose that control the connected fan in the ports JP3.
With reference to figure 2, Intelligent conversion circuit 4 also has the function of over-voltage protecting function and overheat protector when high voltage inputs.
It fails and is directly connected when silicon-controlled Q3 is depressured, microcontroller IC1 is detected by D_OUT pins through voltage sampling circuit 5 at this time
Low level then judges that silicon-controlled Q3 fails and is directly connected, and microcontroller IC1 is passed through by OUT3 pin output over-voltage protection signals
Voltage protection circuit 2 controls the first relay K1, so that the ends COM of the first relay K1 is disconnected with the ends OC, reaches disconnection input voltage
Protect the purpose of output loading.Microcontroller IC1 detects the work of ac conversion circuit by D_NTC pins through temperature sensing circuit 7
Make environment temperature, when the operating ambient temperature of microcontroller IC1 detection ac conversion circuits reaches the temperature of microcontroller IC1 inner settings
When spending, microcontroller IC1 by OUT1 pin output buck signals and can adjust the angle of flow of silicon-controlled Q3, reduce AC output voltage
And output power is reduced, while microcontroller IC1 reaches stable exchange by FAN pin start signal outputs fan control circuitry 9
The purpose of the operating ambient temperature of conversion circuit；On if the operating ambient temperature of microcontroller IC1 detection ac conversion circuits continues
The overheat protector function of rising and can trigger microcontroller IC1 inner settings closes silicon-controlled Q3 by OUT1 pins and reaches excess temperature guarantor
The purpose of shield.
The ac conversion circuit of the utility model can intelligent recognition input when being inputted for 110VAC or 220VAC power grids
220VAC is simultaneously converted into 110VAC by voltage through Intelligent conversion circuit, and there is intelligent conversion, lowering and stabilizing blood pressure, overvoltage to protect simultaneously
The advantages of shield, temperature protection.
As being further improved for technical solution, with reference to figure 1, ac conversion circuit further includes current rectifying and wave filtering circuit 10, AC-
DC conversion circuits 11, rectification filtering unit and DC output circuits, AC input 1 are connect with the input terminal of current rectifying and wave filtering circuit 10,
The output end of current rectifying and wave filtering circuit 10 is connect with the input terminal of AC-DC conversion circuits 11, the output end of AC-DC conversion circuits 11 with
The input terminal of rectification filtering unit connects, and the output end of rectification filtering unit is connect with the input terminal of DC output circuits.Specifically,
With reference to figure 3, Fig. 2 and Fig. 3 are an a kind of specific embodiment circuit diagram of ac conversion circuit of the utility model, rectifying and wave-filtering
Circuit 10 is bridge rectifier filter circuit, and L lines, the N lines of AC input 1 are connected to through fuse F2 and thermistor RT2 respectively
Rectifier bridge BR1 and filter capacitor C7.AC-DC conversion circuits are OB2281 chip ICs 2 and its peripheral circuit, and peripheral circuit includes becoming
Depressor T1, power tube M1.
With reference to figure 1, rectification filtering unit includes the first current rectifying and wave filtering circuit 15 and the second current rectifying and wave filtering circuit 13, DC outputs
Circuit includes the first DC output circuits 16 and the 2nd DC output circuits 14, the output end of AC-DC conversion circuits 11 and the first rectification
The input terminal connection of the input terminal of filter circuit 15, the second current rectifying and wave filtering circuit 13, the output end of the first current rectifying and wave filtering circuit 15
It is connect with the input terminal of the first DC output circuits 16, the output end of the second current rectifying and wave filtering circuit 13 and the 2nd DC output circuits 14
Input terminal connects.Wherein, with reference to figure 3, the first current rectifying and wave filtering circuit 15 includes diode D9 and capacitance C14, and electricity is converted by AC-DC
The N4 windings of transformer T1 export the first D/C voltage VO1+ through diode D9 and capacitance C14 rectifying and wave-filterings in road 11.First DC is defeated
Go out circuit be USB interface USB1 and USB identification chip IC6 and its peripheral circuit, the output end of the first current rectifying and wave filtering circuit 15 with
The input terminal of USB identification chips IC6 connects, and USB identification chips IC6 is connect with USB interface USB1.The model of USB identification chips
There are SE2513, LT8022, in the present embodiment, using the USB identification chips of SE2513 models.Second current rectifying and wave filtering circuit 13 includes
Diode D8 and capacitance C13, by the N5 windings of T1 transformers in AC-DC conversion circuits 11 through diode D8 and capacitance C13 rectifications
The second D/C voltage VO2+ of filtering output.2nd DC output circuits 14 include decompression chip IC 5 (UP9616), inductance L1 and second
USB interface USB2, the 2nd DC output circuits 14 are used as DC-DC reduction voltage circuits.
With reference to figure 1 and Fig. 3, L lines, the N lines of AC input 1 are connected to fuse F2 and thermistor RT2 is whole by bridge-type
Filter circuit is flowed into the first DC (DC1)；First DC (DC1) is connected to by transformer T1, power tube M1, current sampling resistor R30,
And the feedback signal of voltage feedback circuit is detected by optocoupler PC2 by the FB pins of OB2281 chip ICs 2, with OB2281 chips
Reference signal inside IC2 relatively and by the GT pins of OB2281 chip ICs 2 exports the open signal of control power tube M1, leads to
Adjustment duty ratio is crossed to achieve the purpose that stablize the first rectifying and wave-filtering road 15 and the output of the second current rectifying and wave filtering circuit 13.Second D/C voltage
VO2+ is connected to the DC-DC reduction voltage circuits being made of UP9616 chips and peripheral circuit and is output to USB interface USB2.First DC electricity
Pressure VO1+ is connected to the USB identification circuit being made of SE2513 chips and is output to USB interface USB1.In addition, ac conversion circuit
Further include power supply circuit 6, for powering for governor circuit 8, Intelligent conversion circuit 4, overvoltage crowbar.Electricity is converted by AC-DC
The N3 windings of transformer T1 are through diode D10 and capacitance C12 rectifying and wave-filterings output supply voltage V+ in road 11.Supply voltage V+ gives
Overvoltage crowbar 2 and Intelligent conversion circuit 4 are powered, at the same by three-terminal voltage-stabilizing pipe IC3 and filter capacitor C15 export+5V to
Governor circuit 8 is powered.
As being further improved for technical solution, with reference to figure 1, ac conversion circuit further includes voltage feedback circuit 12, the
The output end of one current rectifying and wave filtering circuit 15, the output end of the second current rectifying and wave filtering circuit 13 and the input terminal of voltage feedback circuit 12 connect
It connects, the output end of voltage feedback circuit 12 is connect with the input terminal of AC-DC conversion circuits 11.With reference to figure 3, voltage feedback circuit 12
Including voltage-stablizer IC4 (TL431), isolation optocoupler PC2, voltage-stabiliser tube ZD1 and periphery supplying resistance R33, R34 and voltage sample resistance
R37、R39、R40、R41.The poles R of voltage-stablizer IC4 detect the first DC output voltage VO1+'s and the second DC output voltage VO2+
Voltage signal, the voltage value by the way that the poles K are made comparisons and controlled with the reference voltage inside voltage-stablizer IC4 make optocoupler PC2 work, surely
The voltage signal of VO1+, VO2+ are fed back to the FB feet of chip IC 2 by optocoupler PC2 by depressor IC4, and chip IC 2 is by adjusting interior
The PWM that VO1+ is stablized in the pwm signal output in portion achievees the purpose that stablize the first DC output voltage VO1+ to power tube M1.Due to
2nd DC outputs have voltage sampling resistor R39, R40 and R41, have certain feedback quantity in voltage feedback loop, have certain
Feedback quantity can improve the load capacity of the 2nd DC outputs, while increase in the second DC output voltage VO2+ voltage sample circuits
Voltage-stabiliser tube ZD1 keeps the 2nd DC outputs since the pressure stabilization function of voltage-stabiliser tube ZD1 can make the electric current for flowing through resistance R40 constant
With stable voltage sampling electric current, and since the first DC output voltage can be believed voltage by voltage sampling resistor R37, R40
The stabilization that AC-DC conversion circuits 11 maintain main road (the first DC output circuits) to export number is fed back to, so the Voltage Feedback stablized
The load capacity of the 2nd DC output circuits (bypass) can be improved in amount, the stabilization of the output voltage without influencing main road.
It is to be illustrated to the preferable implementation of the utility model, but the invention is not limited to the reality above
Example is applied, those skilled in the art can also make various equivalent variations without departing from the spirit of the present invention
Or replace, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (10)
1. a kind of ac conversion circuit, which is characterized in that including AC input, AC output ends, Intelligent conversion circuit, voltage sample
Circuit and governor circuit；The Intelligent conversion circuit is used to be exported by the normal voltage that master control circuit control inputs AC input
To AC output ends, the off-standard voltage that AC input inputs is converted into normal voltage and is exported to AC output ends；The voltage is adopted
Sample circuit is used to sample the voltage of the voltage and Intelligent conversion circuit output of AC input input；
The AC input is connect with the input terminal of AC output ends, Intelligent conversion circuit, the output end of the Intelligent conversion circuit
It is connect with AC output ends, the input terminal connection of the AC input, the output end of Intelligent conversion circuit and voltage sampling circuit, institute
The input terminal of the output end and governor circuit of stating voltage sampling circuit connects, output end and the intelligent conversion electricity of the governor circuit
The input terminal on road connects.
2. ac conversion circuit according to claim 1, which is characterized in that the ac conversion circuit further includes over-pressed guarantor
Protection circuit, the AC input are connect by overvoltage crowbar with AC output ends, output end and the overvoltage of the governor circuit
Protect the input terminal connection of circuit.
3. ac conversion circuit according to claim 1, which is characterized in that the ac conversion circuit further includes temperature inspection
Slowdown monitoring circuit and fan control circuitry, the temperature sensing circuit are used to detect the temperature of the working environment of ac conversion circuit；Institute
The input terminal of the output end and governor circuit of stating temperature sensing circuit connects, output end and the fan control electricity of the governor circuit
The input terminal on road connects.
4. ac conversion circuit according to claim 1, which is characterized in that the Intelligent conversion circuit include it is silicon-controlled and
Relay, the AC input are connect by silicon-controlled with AC output ends, and the AC input passes through relay and AC output ends
Connection, the governor circuit connect the break-make to control them with silicon-controlled, relay.
5. ac conversion circuit according to claim 1, which is characterized in that the governor circuit is microcontroller and its periphery
Circuit.
6. ac conversion circuit according to any one of claims 1 to 5, which is characterized in that the ac conversion circuit is also
Including current rectifying and wave filtering circuit, AC-DC conversion circuits, rectification filtering unit and DC output circuits, the AC input is filtered with rectification
The input terminal of wave circuit connects, and the output end of the current rectifying and wave filtering circuit is connect with the input terminal of AC-DC conversion circuits, described
The output end of AC-DC conversion circuits and the input terminal of rectification filtering unit connect, the output end and DC of the rectification filtering unit
The input terminal of output circuit connects.
7. ac conversion circuit according to claim 6, which is characterized in that the AC-DC conversion circuits are OB2281 cores
Piece and its peripheral circuit.
8. ac conversion circuit according to claim 6, which is characterized in that the rectification filtering unit includes the first rectification
Filter circuit and the second current rectifying and wave filtering circuit, the DC output circuits include the first DC output circuits and the 2nd DC output circuits,
The input terminal of the output end of the AC-DC conversion circuits and the input terminal of the first current rectifying and wave filtering circuit, the second current rectifying and wave filtering circuit
Connection, the output end of first current rectifying and wave filtering circuit are connect with the input terminal of the first DC output circuits, the second rectification filter
The output end of wave circuit is connect with the input terminal of the 2nd DC output circuits.
9. ac conversion circuit according to claim 8, which is characterized in that the ac conversion circuit further includes that voltage is anti-
Current feed circuit, the output end of first current rectifying and wave filtering circuit, the output end of the second current rectifying and wave filtering circuit and voltage feedback circuit
Input terminal connects, and the output end of the voltage feedback circuit is connect with the input terminal of AC-DC conversion circuits.
10. ac conversion circuit according to claim 8 or claim 9, which is characterized in that the first DC output circuits are USB
Interface and USB identification chips and its peripheral circuit, the input of the output end and USB identification chips of first current rectifying and wave filtering circuit
End connection, the USB identification chips are connect with USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820072490.XU CN207835357U (en) | 2018-01-16 | 2018-01-16 | A kind of ac conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820072490.XU CN207835357U (en) | 2018-01-16 | 2018-01-16 | A kind of ac conversion circuit |
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| Publication Number | Publication Date |
|---|---|
| CN207835357U true CN207835357U (en) | 2018-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820072490.XU Withdrawn - After Issue CN207835357U (en) | 2018-01-16 | 2018-01-16 | A kind of ac conversion circuit |
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| CN (1) | CN207835357U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155812A (en) * | 2018-01-16 | 2018-06-12 | 深圳市赛格瑞电子有限公司 | A kind of ac conversion circuit |
| CN110224615A (en) * | 2019-06-20 | 2019-09-10 | 广东百事泰电子商务股份有限公司 | Intelligent silicon controlled rectifier voltage conversion circuit |
-
2018
- 2018-01-16 CN CN201820072490.XU patent/CN207835357U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108155812A (en) * | 2018-01-16 | 2018-06-12 | 深圳市赛格瑞电子有限公司 | A kind of ac conversion circuit |
| CN108155812B (en) * | 2018-01-16 | 2024-03-19 | 深圳市赛格瑞电子有限公司 | Alternating current conversion circuit |
| CN110224615A (en) * | 2019-06-20 | 2019-09-10 | 广东百事泰电子商务股份有限公司 | Intelligent silicon controlled rectifier voltage conversion circuit |
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Granted publication date: 20180907 Effective date of abandoning: 20240319 |