CN208241572U - A kind of jamproof two-way parallel output power supply adaptor - Google Patents
A kind of jamproof two-way parallel output power supply adaptor Download PDFInfo
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- CN208241572U CN208241572U CN201820904186.7U CN201820904186U CN208241572U CN 208241572 U CN208241572 U CN 208241572U CN 201820904186 U CN201820904186 U CN 201820904186U CN 208241572 U CN208241572 U CN 208241572U
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Abstract
The utility model relates to a kind of jamproof two-way parallel output power supply adaptors.Comprising: the EMC circuit being electrically connected with alternating current；The full bridge rectifier being electrically connected with EMC circuit, full bridge rectifier set that there are two output ends in parallel；Two charger circuits, charger circuit is electrically connected with the output end of full bridge rectifier respectively, and is externally exported；EMC circuit includes common mode inductance NF1, and two input terminals of common mode inductance NF1 are electrically connected with two output ends of alternating current respectively, is in series with capacitor XC1 between two output ends of common mode inductance NF1；The tie point that capacitor XC1 is parallel with the capacitor YC1 and capacitor YC2 of series connection, capacitor YC1 and capacitor YC2 is grounded by inductance L2.The utility model is eliminated the influence of electromagnetism generation by the common mode filtering circuit and differential mode filter circuit of EMC circuit, improves interference free performance by the way that EMC circuit is arranged in two-way parallel output power supply adaptor electric current.
Description
Technical field
The utility model relates to power supply adaptor technical field more particularly to a kind of jamproof two-way parallel output power supplys
Adapter.
Background technique
With the continuous development of electronic technology, many electrical equipments all use two using mobile power supply mode, such as dust catcher
Block battery powers to it use in turn, since electrical equipment battery is usually rechargeable, needs in charging using multiple power supplys
Adapter in order to reduce the quantity of power supply adaptor, while also facilitating management, therefore occurs two-way parallel output electricity in the market
Source adapter, when using two-way parallel output circuit, internal electromagnetic effect is larger, causes the supply voltage of input unstable,
Often there is output voltage fluctuation, brings damage to the electronic product of charging.
Summary of the invention
The purpose of this utility model is that in view of the deficiencies of the prior art, providing a kind of jamproof two-way parallel output electricity
Source adapter can guarantee that the mains supply of input is stablized.
A kind of jamproof two-way parallel output power supply adaptor comprising:
The EMC circuit being electrically connected with alternating current；
The full bridge rectifier being electrically connected with EMC circuit, full bridge rectifier set that there are two output ends in parallel；
Two charger circuits, charger circuit is electrically connected with the output end of full bridge rectifier respectively, and is externally exported；
Wherein: EMC circuit includes common mode inductance NF1, and two input terminals of common mode inductance NF1 are defeated with two of alternating current respectively
Outlet is electrically connected, and is in series with capacitor XC1 between two output ends of common mode inductance NF1；Capacitor XC1 is parallel with the electricity of series connection
The tie point for holding YC1 and capacitor YC2, capacitor YC1 and capacitor YC2 is grounded by inductance L2.
Further, EMC circuit further includes common mode inductance NF2, two input terminals of common mode inductance NF2 respectively with capacitor
The both ends of XC1 connect, and two output ends of common mode inductance NF2 are connect with full bridge rectifier respectively.
Further, the charger circuit includes transformer T1, the income end of the primary coil of transformer T1 and full-bridge
One of output end of rectification circuit is electrically connected, and the output end of primary coil is connect by metal-oxide-semiconductor Q1, the resistance R8 being connected in series
Ground；Charger circuit further includes control chip U1, controls the model OB2365A of chip U1；The power end for controlling chip U1 is logical
Power supply branch circuit is crossed to be electrically connected with the output end of EMC circuit, transformer T1 be equipped with feedback coil, control chip U1 test side with
The output end of feedback coil is electrically connected；The control terminal of control chip U1 is electrically connected with the pole G of metal-oxide-semiconductor Q1, and control chip U1 passes through
The switching frequency of the supply voltage control metal-oxide-semiconductor of detection feedback, and then control the voltage and current that transformer externally exports.
Further, charger circuit is equipped with power supply branch circuit, and passes through the output end of power supply branch circuit and EMC circuit electricity
Connection, the power supply branch circuit includes the resistance R1A and resistance R2A being series between two output ends of EMC circuit, resistance
R1A is connect by resistance R14 with the power end of control chip U1 with the tie point of resistance R2A.
Further, the output end of the secondary coil of transformer T1 is connected with filter circuit, and the filter circuit includes two
Pole pipe D5 and the resistance R16 in parallel with diode D5, capacitor C8；Resistance R16 connects with capacitor C8；The output end of diode D5
It is grounded by capacitor C9.
Further, charger circuit further includes current stabilization circuit, and current stabilization circuit is connected to the secondary coil of transformer T1
Output end；The current stabilization circuit includes control chip U2, controls the model of chip U2 are as follows: AP4310A.
Further, the output end of rectification circuit is connected by the output end of common mode inductance L1 and charger circuit.
The utility model has the beneficial effects that the utility model in two-way parallel output power supply adaptor electric current by being arranged
EMC circuit eliminates the influence of electromagnetism generation by the common mode filtering circuit and differential mode filter circuit of EMC circuit, improves anti-dry
Immunity energy.
Detailed description of the invention
Fig. 1 is the EMC circuit and a kind of schematic diagram of rectification circuit of the present embodiment.
Fig. 2 is a kind of schematic diagram of the charger circuit of the present embodiment.
Fig. 3 is the schematic diagram of the current stabilization circuit of the present embodiment.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing.As shown in Figure 1 to Figure 3.
A kind of embodiment: jamproof two-way parallel output power supply adaptor comprising:
The EMC circuit being electrically connected with alternating current；
The full bridge rectifier being electrically connected with EMC circuit, full bridge rectifier set that there are two output ends in parallel；
Two charger circuits, charger circuit is electrically connected with the output end of full bridge rectifier respectively, and is externally exported；
Wherein: EMC circuit includes common mode inductance NF1, and two input terminals of common mode inductance NF1 are defeated with two of alternating current respectively
Outlet is electrically connected, and is in series with capacitor XC1 between two output ends of common mode inductance NF1；Capacitor XC1 is parallel with the electricity of series connection
The tie point for holding YC1 and capacitor YC2, capacitor YC1 and capacitor YC2 is grounded by inductance L2.
The technical program is electrically connected by the way that EMC circuit is arranged with alternating current, can effectively reduce influence of the electromagnetism to input power；
Wherein, EMC circuit uses the combination of common mode filtering circuit and differential mode filter circuit to reduce the influence of electromagnetism, wherein common mode electricity
Feel NF1 and capacitor XC1 and constitute common mode filtering circuit, the capacitor YC1 and capacitor YC2 and inductance L2 of series connection constitute differential mode filtering
Circuit, collective effect, reduce two signal lines between and the electromagnetic effect between signal wire and ground.
Further, EMC circuit further includes common mode inductance NF2, two input terminals of common mode inductance NF2 respectively with capacitor
The both ends of XC1 connect, and two output ends of common mode inductance NF2 are connect with full bridge rectifier respectively.
After common mode inductance NF2 is set, the electromagnetic interference in output electric current can be further eliminated, is filtered.
Further, the charger circuit includes transformer T1, the income end of the primary coil of transformer T1 and full-bridge
One of output end of rectification circuit is electrically connected, and the output end of primary coil is connect by metal-oxide-semiconductor Q1, the resistance R8 being connected in series
Ground；Charger circuit further includes control chip U1, controls the model OB2365A of chip U1；The power end for controlling chip U1 is logical
Power supply branch circuit is crossed to be electrically connected with the output end of EMC circuit, transformer T1 be equipped with feedback coil, control chip U1 test side with
The output end of feedback coil is electrically connected；The control terminal of control chip U1 is electrically connected with the pole G of metal-oxide-semiconductor Q1, and control chip U1 passes through
The switching frequency of the supply voltage control metal-oxide-semiconductor of detection feedback, and then control the voltage and current that transformer externally exports.
Two charger circuits are identical, avoid repeating for convenience of understanding, only to one of charging circuit in the present embodiment
Analysis.Charger circuit can also use other circuits；Charger circuit in the technical program uses reduction voltage circuit, passes through control
Coremaking piece U1 detects feedback coil and generates voltage, and carries out switch control to the concatenated metal-oxide-semiconductor of primary coil, and then control just
The input power of grade coil by changing input power, and then is adjusted since the ratio of primary coil and secondary coil is definite value
The voltage and current of output.Certainly control chip U1 can also use other chips.
Further, charger circuit is equipped with power supply branch circuit, and passes through the output end of power supply branch circuit and EMC circuit electricity
Connection, the power supply branch circuit includes the resistance R1A and resistance R2A being series between two output ends of EMC circuit, resistance
R1A is connect by resistance R14 with the power end of control chip U1 with the tie point of resistance R2A.
In the technical program, bleeder circuit is formed by concatenated resistance R1A and resistance R2A, and by resistance R14 to control
Coremaking piece U1 power supply.
Further, the output end of the secondary coil of transformer T1 is connected with filter circuit, and the filter circuit includes two
Pole pipe D5 and the resistance R16 in parallel with diode D5, capacitor C8；Resistance R16 connects with capacitor C8；The output end of diode D5
It is grounded by capacitor C9.
Filter circuit is set, it is possible to reduce the voltage of transformer secondary coil output, current fluctuation play the effect of current stabilization
Fruit.
Further, charger circuit further includes current stabilization circuit, and current stabilization circuit is connected to the secondary coil of transformer T1
Output end；The current stabilization circuit includes control chip U2, controls the model of chip U2 are as follows: AP4310A.
Pass through control chip U2 and the constant current hold of peripheral circuit control output.
Further, the output end of rectification circuit is connected by the output end of common mode inductance L1 and charger circuit.
Common mode inductance L1 is set, electromagnetic interference can be reduced when electric current exports, output is maintained to stablize.
The above content is only the preferred embodiment of the utility model, for those of ordinary skill in the art, according to this reality
With novel thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as
Limitations of the present invention.
Claims (7)
1. a kind of jamproof two-way parallel output power supply adaptor, it is characterised in that: comprising:
The EMC circuit being electrically connected with alternating current；
The full bridge rectifier being electrically connected with EMC circuit, full bridge rectifier set that there are two output ends in parallel；
Two charger circuits, charger circuit is electrically connected with the output end of full bridge rectifier respectively, and is externally exported；
Wherein: EMC circuit includes common mode inductance NF1, two input terminals of common mode inductance NF1 respectively with two output ends of alternating current
It is electrically connected, is in series with capacitor XC1 between two output ends of common mode inductance NF1；Capacitor XC1 is parallel with the capacitor of series connection
The tie point of YC1 and capacitor YC2, capacitor YC1 and capacitor YC2 are grounded by inductance L2.
2. a kind of jamproof two-way parallel output power supply adaptor according to claim 1, it is characterised in that: EMC electricity
Road further includes common mode inductance NF2, and two input terminals of common mode inductance NF2 are connect with the both ends of capacitor XC1 respectively, common mode inductance
Two output ends of NF2 are connect with full bridge rectifier respectively.
3. a kind of jamproof two-way parallel output power supply adaptor according to claim 1, it is characterised in that: described to fill
Appliance circuit includes transformer T1, one of output end at the income end and full bridge rectifier of the primary coil of transformer T1
The output end of electrical connection, primary coil is grounded by metal-oxide-semiconductor Q1, the resistance R8 being connected in series；Charger circuit further includes control
Chip U1 controls the model OB2365A of chip U1；The power end for controlling chip U1 passes through power supply branch circuit and EMC circuit
Output end electrical connection, transformer T1 are equipped with feedback coil, and the test side of control chip U1 is electrically connected with the output end of feedback coil；
The control terminal of control chip U1 is electrically connected with the pole G of metal-oxide-semiconductor Q1, the supply voltage control that control chip U1 passes through detection feedback
The switching frequency of metal-oxide-semiconductor, and then control the voltage and current that transformer externally exports.
4. a kind of jamproof two-way parallel output power supply adaptor according to claim 3, it is characterised in that: charger
Circuit is equipped with power supply branch circuit, and is electrically connected by power supply branch circuit with the output end of EMC circuit, and the power supply branch circuit includes
The resistance R1A and resistance R2A being series between two output ends of EMC circuit, resistance R1A and the tie point of resistance R2A pass through
Resistance R14 is connect with the power end of control chip U1.
5. a kind of jamproof two-way parallel output power supply adaptor according to claim 3, it is characterised in that: transformer
The output end of the secondary coil of T1 is connected with filter circuit, and the filter circuit includes diode D5 and in parallel with diode D5
Resistance R16, capacitor C8；Resistance R16 connects with capacitor C8；The output end of diode D5 is grounded by capacitor C9.
6. a kind of jamproof two-way parallel output power supply adaptor according to claim 3, it is characterised in that: charger
Circuit further includes current stabilization circuit, and current stabilization circuit is connected to the output end of the secondary coil of transformer T1；The current stabilization circuit includes
Chip U2 is controlled, controls the model of chip U2 are as follows: AP4310A.
7. a kind of jamproof two-way parallel output power supply adaptor according to claim 6, it is characterised in that: rectified current
The output end on road is connected by the output end of common mode inductance L1 and charger circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820904186.7U CN208241572U (en) | 2018-06-12 | 2018-06-12 | A kind of jamproof two-way parallel output power supply adaptor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820904186.7U CN208241572U (en) | 2018-06-12 | 2018-06-12 | A kind of jamproof two-way parallel output power supply adaptor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208241572U true CN208241572U (en) | 2018-12-14 |
Family
ID=64576722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820904186.7U Active CN208241572U (en) | 2018-06-12 | 2018-06-12 | A kind of jamproof two-way parallel output power supply adaptor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208241572U (en) |
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2018
- 2018-06-12 CN CN201820904186.7U patent/CN208241572U/en active Active
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