CN206992972U - A kind of ac-dc converter circuit - Google Patents
A kind of ac-dc converter circuit Download PDFInfo
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- CN206992972U CN206992972U CN201720139798.7U CN201720139798U CN206992972U CN 206992972 U CN206992972 U CN 206992972U CN 201720139798 U CN201720139798 U CN 201720139798U CN 206992972 U CN206992972 U CN 206992972U
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Abstract
The utility model discloses a kind of ac-dc converter circuit, including：Rectification circuit, it is dc source for input ac power, and by the AC power rectification；Voltage conversion circuit, the input of the voltage conversion circuit are connected with the output end of the rectification circuit, for the dc source to be converted into stable dc power supply, with powering load；The voltage conversion circuit includes high-voltage three-pole pipe and high frequency transformer；The output end with the rectification circuit, the high-voltage three-pole pipe are connected the primary side winding of the high frequency transformer respectively, and the vice-side winding of the high frequency transformer connects with the load.Using the utility model embodiment, circuit structure is simple, and circuit power consumption is low.
Description
Technical field
It the utility model is related to power technique fields, more particularly to a kind of ac-dc converter circuit.
Background technology
With the development of information technology, constantly increase for electronic product demand, carried out using ac-dc converter circuit
The electronic product of power supply is more and more, is widely used.Electronic product of the prior art is made using ac-dc converter circuit
It is more with component, circuit structure load so that circuit power consumption is bigger, uses cumbersome.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of ac-dc converter circuit, and circuit structure is simple, electricity
Road is low in energy consumption.
To solve above technical problem, the utility model embodiment provides a kind of ac-dc converter circuit, including：
Rectification circuit, it is dc source for input ac power, and by the AC power rectification；
Voltage conversion circuit, the input of the voltage conversion circuit are connected with the output end of the rectification circuit, are used for
The dc source is converted into stable dc power supply, with powering load；
The voltage conversion circuit includes high-voltage three-pole pipe and high frequency transformer；
The primary side winding of the high frequency transformer output end with the rectification circuit, the high-voltage three-pole Guan Lian respectively
Connect, the vice-side winding of the high frequency transformer connects with the load.
Further, the rectification circuit includes the first diode and high-voltage capacitance；The primary side of the high frequency transformer around
Group includes the first primary side winding and the second primary side winding；
The positive pole of first diode is connected with the positive pole of the AC power, the negative pole of first diode and institute
State the first end connection of the first primary side winding of high frequency transformer；The positive pole of the high-voltage capacitance is negative with first diode
Pole is connected, and the negative pole of the high-voltage capacitance is connected with the negative pole of the AC power.
Further, the voltage conversion circuit also includes high-voltage diode, voltage-regulator diode, the 4th diode, second
Resistance, the 4th resistance and the 3rd electric capacity；
First end of the one end of the second resistance respectively with the first primary side winding of the high frequency transformer is connected, described
The other end of second resistance is connected with the negative pole of the high-voltage diode；The positive pole of the high-voltage diode respectively with the high pressure
The second end connection of the colelctor electrode of triode, first primary side winding, the emitter stage of the high-voltage three-pole pipe and the described 4th
One end connection of resistance, the other end of the 4th resistance are connected with the 4th end of second primary side winding；The high pressure three
The base stage of pole pipe is connected with the negative pole of the voltage-regulator diode, and the positive pole of the voltage-regulator diode and the 4th diode are just
Pole connects, the negative pole of the 4th diode and the three-terminal link of second primary side winding；The negative pole of 3rd electric capacity
It is connected with the positive pole of the 4th diode, the positive pole of the 3rd electric capacity is connected with the 4th end of second primary side winding.
Further, the voltage conversion circuit also includes triode, first resistor, 3rd resistor, the second electric capacity, the 4th
Electric capacity and the 5th diode；
Second electric capacity is in parallel with the second resistance；One end of the first resistor respectively with first primary side around
The first end connection of group, the other end of the first resistor base stage with the high-voltage three-pole pipe, the collection of the triode respectively
Electrode connects, and the emitter stage of the triode is connected with the 4th end of second primary side winding, the base stage of the triode and
The negative pole connection of 5th diode, the positive pole of the 5th diode are connected with the emitter stage of the high-voltage three-pole pipe；Institute
The one end for stating 3rd resistor is connected with the colelctor electrode of the triode, the other end of the 3rd resistor and the 4th electric capacity
One end connects, the other end of the 4th electric capacity and the three-terminal link of second primary side winding.
Further, the voltage conversion circuit also includes the 6th diode and filter capacitor；
The six end connecting of the positive pole of 6th diode and the vice-side winding of the high frequency transformer, the described 6th 2
The positive pole with the filter capacitor, the power supply anode of the load are connected the negative pole of pole pipe respectively, the negative pole of the filter capacitor
The 5th end with the vice-side winding, the power supply negative terminal of the load are connected respectively.
Further, the ac-dc converter circuit includes being used for cutting off electric current in circuit abnormality to protect circuit
The fuse of shield；
One end of the fuse is connected with the negative pole of the AC power, the other end of the fuse respectively with it is described
The 4th end connection of the negative pole of high-voltage capacitance, second primary side winding.
The ac-dc converter circuit that the utility model embodiment provides, rectification circuit can be used to carry out AC power whole
Stream, voltage conversion is carried out to the dc source after rectification using voltage transformation module, the voltage against load after conversion is carried out
Power supply, wherein, voltage transformation module is mainly made up of a high-voltage three-pole pipe and a high frequency transformer, and circuit structure is simple,
And high-voltage three-pole pipe and high frequency transformer is low in energy consumption, so as to reduce circuit power consumption.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of ac-dc converter circuit provided by the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe.
It is the structural representation of one embodiment of ac-dc converter circuit provided by the utility model referring to Fig. 1.
The present embodiment provides a kind of ac-dc converter circuit, including：
Rectification circuit 11, it is dc source for input ac power, and by the AC power rectification；
Voltage conversion circuit 12, the output end of the input of the voltage conversion circuit 12 and the rectification circuit 11 connect
Connect, for the dc source to be converted into stable dc power supply, with powering load；
The voltage conversion circuit 12 includes high-voltage three-pole pipe V1 and high frequency transformer T；
Primary side winding L1, L2 of the high frequency transformer T output end with the rectification circuit 1, the high pressure three respectively
Pole pipe V1 connections, the vice-side winding L3 of the high frequency transformer T connect with the load.
It should be noted that there is ac power input end on rectification circuit, wherein, AC power input positive terminal is with exchanging
The negative pole of the positive pole connection of power supply, AC power input negative terminal and AC power connects, and AC power is 220V AC powers.Electricity
There is DC power output end on voltage conversion circuit, wherein, dc source output plus terminal is connected with the power supply anode loaded, direct current
Power supply exports negative terminal and is connected with the power supply negative terminal loaded.
In the specific implementation, the ac power input end input 220V AC powers of rectification circuit, pass through AC power
Rectification, output dc source pass through high-voltage three-pole pipe therein and high frequency transformer to voltage conversion circuit, voltage conversion circuit
Voltage conversion is carried out to the dc source of input, stable dc power supply is converted to, passes through DC power output end powering load.
The present embodiment input 220V AC powers disclosure satisfy that some directly will using the power supply of the small electric apparatus of 220V AC powers power supply
Ask, and voltage transformation module is mainly made up of a high-voltage three-pole pipe and a high frequency transformer, and circuit structure is simple, circuit
It is low in energy consumption, it is ensured that properties of product reliability is higher.
Further, the rectification circuit 11 includes the first diode D1 and high-voltage capacitance C1；The high frequency transformer T's
Primary side winding includes the first primary side winding L1 and the second primary side winding L2；
The positive pole of the first diode D1 is connected with the positive pole VIN+ of the AC power, the first diode D1's
Negative pole is connected with the first primary side winding L1 of high frequency transformer T first end 1；The positive pole of the high-voltage capacitance C1 with it is described
First diode D1 negative pole connection, the negative pole of the high-voltage capacitance C1 are connected with the negative pole VIN- of the AC power.
Further, the voltage conversion circuit 2 also includes high-voltage diode D2, voltage-regulator diode D3, the 4th diode
D4, second resistance R2, the 4th resistance R4 and the 3rd electric capacity C3；
First end 1 of the one end of the second resistance R2 respectively with the first primary side winding L1 of the high frequency transformer T connects
Connect, the other end of the second resistance R2 is connected with the negative pole of the high-voltage diode D2；The positive pole of the high-voltage diode D2
The colelctor electrode with the high-voltage three-pole pipe V1, the second end 2 of the first primary side winding L1 are connected respectively, the high-voltage three-pole pipe
V1 emitter stage is connected with one end of the 4th resistance R4, the other end and second primary side winding of the 4th resistance R4
L2 the 4th end 4 connects；The base stage of the high-voltage three-pole pipe V1 is connected with the negative pole of the voltage-regulator diode D3, the voltage stabilizing two
Pole pipe D3 positive pole is connected with the positive pole of the 4th diode D4, and the negative pole of the 4th diode D4 is former with described second
Side winding L2 the 3rd end 3 connects；The negative pole of the 3rd electric capacity C3 is connected with the positive pole of the 4th diode D4, described
3rd electric capacity C3 positive pole is connected with the 4th end 4 of the second primary side winding L2.
It should be noted that after 220V AC powers are inputted, AC power passes through the first diode D1 and high-voltage capacitance
C1 rectifications are dc source, and the dc source after rectification flows to high frequency transformer T.High frequency transformer T and high-voltage three-pole pipe V1, the
Four resistance R4 connect into loop, produce high-frequency signal, high-voltage three-pole pipe V1 emitter and collector conducting, by dc source
Required stable dc power supply is converted to, is exported to load and is powered by high frequency transformer T vice-side winding.
Further, the voltage conversion circuit 2 also includes triode V2, first resistor R1,3rd resistor R3, second
Electric capacity C2, the 4th electric capacity C4 and the 5th diode D5；
The second electric capacity C2 is in parallel with the second resistance R2；One end of the first resistor R1 is respectively with described first
Primary side winding L1 first end 1 connects, the other end of the first resistor R1 base stage with the high-voltage three-pole pipe V1, institute respectively
Triode V2 colelctor electrode connection is stated, the emitter stage of the triode V2 is connected with the 4th end 4 of the second primary side winding L2,
The base stage of the triode V2 is connected with the negative pole of the 5th diode D5, positive pole and the height of the 5th diode D5
Press triode V1 emitter stage connection；One end of the 3rd resistor R3 is connected with the colelctor electrode of the triode V2, and described
The three resistance R3 other end is connected with one end of the 4th electric capacity C4, and the other end of the 4th electric capacity C4 is former with described second
Side winding L2 the 3rd end 3 connects.
Further, the voltage conversion circuit also includes the 6th diode D6 and filter capacitor C5；
The positive pole of the 6th diode D6 is connected with the vice-side winding L3 of the high frequency transformer T the 6th end 6, institute
Stating the 6th diode D6 negative pole, the positive pole with the filter capacitor C5, the power supply anode VOUT+ of the load are connected respectively, institute
Stating filter capacitor C5 negative pole, the 5th end 5 with the vice-side winding L3, the power supply negative terminal VOUT- of the load are connected respectively.
It should be noted that the connection of high frequency transformer T vice-side winding, the 6th diode D6 and filter capacitor C5, shape
Into output loop, to export stable dc power supply powering load.
Further, the voltage conversion circuit 2 also includes the 5th resistance R5 and light emitting diode D7；
One end of the 5th resistance R5 is connected with the power supply anode VOUT+ of the load, and the 5th resistance R5's is another
One end is connected with the positive pole of the light emitting diode D7, the negative pole of the light emitting diode D7 and the power supply negative terminal of the load
VOUT- connections.
Further, the ac-dc converter circuit includes being used for cutting off electric current in circuit abnormality to protect circuit
The fuse FU of shield；
One end of the fuse FU is connected with the negative pole VIN- of the AC power, the other end of the fuse FU
The negative pole with the high-voltage capacitance C1, the 4th end 4 of the second primary side winding L2 are connected respectively.
It should be noted that the present embodiment is by a high-voltage three-pole pipe, a high frequency transformer and several resistance capacitance groups
Into the AC power of input is converted into stable dc power supply and gives product (load) power supply, circuit structure is simple, circuit power consumption
It is low, it is ensured that properties of product reliability is high.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the scope of protection of the utility model.
Claims (6)
- A kind of 1. ac-dc converter circuit, it is characterised in that including：Rectification circuit, it is dc source for input ac power, and by the AC power rectification；Voltage conversion circuit, the input of the voltage conversion circuit are connected with the output end of the rectification circuit, for by institute State dc source and be converted to stable dc power supply, with powering load；The voltage conversion circuit includes high-voltage three-pole pipe and high frequency transformer；The output end with the rectification circuit, the high-voltage three-pole pipe are connected the primary side winding of the high frequency transformer respectively, institute The vice-side winding and the load for stating high frequency transformer connect.
- 2. ac-dc converter circuit as claimed in claim 1, it is characterised in that the rectification circuit include the first diode and High-voltage capacitance；The primary side winding of the high frequency transformer includes the first primary side winding and the second primary side winding；The positive pole of first diode is connected with the positive pole of the AC power, negative pole and the height of first diode The first end connection of first primary side winding of frequency power transformer；The negative pole of the positive pole of the high-voltage capacitance and first diode connects Connect, the negative pole of the high-voltage capacitance is connected with the negative pole of the AC power.
- 3. ac-dc converter circuit as claimed in claim 2, it is characterised in that the voltage conversion circuit also includes high pressure two Pole pipe, voltage-regulator diode, the 4th diode, second resistance, the 4th resistance and the 3rd electric capacity；First end of the one end of the second resistance respectively with the first primary side winding of the high frequency transformer is connected, and described second The other end of resistance is connected with the negative pole of the high-voltage diode；The positive pole of the high-voltage diode respectively with the high-voltage three-pole The second end connection of the colelctor electrode of pipe, first primary side winding, the emitter stage of the high-voltage three-pole pipe and the 4th resistance One end connection, the other end of the 4th resistance is connected with the 4th end of second primary side winding；The high-voltage three-pole pipe Base stage be connected with the negative pole of the voltage-regulator diode, the positive pole of the positive pole of the voltage-regulator diode and the 4th diode connects Connect, the negative pole of the 4th diode and the three-terminal link of second primary side winding；The negative pole of 3rd electric capacity and institute The positive pole connection of the 4th diode is stated, the positive pole of the 3rd electric capacity is connected with the 4th end of second primary side winding.
- 4. ac-dc converter circuit as claimed in claim 3, it is characterised in that the voltage conversion circuit also includes three poles Pipe, first resistor, 3rd resistor, the second electric capacity, the 4th electric capacity and the 5th diode；Second electric capacity is in parallel with the second resistance；One end of the first resistor respectively with first primary side winding First end connects, the other end of the first resistor base stage with the high-voltage three-pole pipe, the colelctor electrode of the triode respectively Connection, the emitter stage of the triode is connected with the 4th end of second primary side winding, the base stage of the triode with it is described The negative pole connection of 5th diode, the positive pole of the 5th diode are connected with the emitter stage of the high-voltage three-pole pipe；Described One end of three resistance is connected with the colelctor electrode of the triode, one end of the other end of the 3rd resistor and the 4th electric capacity Connection, the other end of the 4th electric capacity and the three-terminal link of second primary side winding.
- 5. ac-dc converter circuit as claimed in claim 4, it is characterised in that the voltage conversion circuit also includes the six or two Pole pipe and filter capacitor；The six end connecting of the positive pole of 6th diode and the vice-side winding of the high frequency transformer, the 6th diode Negative pole the positive pole with the filter capacitor, the power supply anode of the load are connected respectively, the negative pole of filter capacitor difference The power supply negative terminal at the 5th end, the load with the vice-side winding is connected.
- 6. ac-dc converter circuit as claimed in claim 5, it is characterised in that the ac-dc converter circuit includes being used for Fuse of the electric current to be protected to circuit is cut off during circuit abnormality；One end of the fuse is connected with the negative pole of the AC power, the other end of the fuse respectively with the high pressure The 4th end connection of the negative pole of electric capacity, second primary side winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720139798.7U CN206992972U (en) | 2017-02-16 | 2017-02-16 | A kind of ac-dc converter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720139798.7U CN206992972U (en) | 2017-02-16 | 2017-02-16 | A kind of ac-dc converter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206992972U true CN206992972U (en) | 2018-02-09 |
Family
ID=61421833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720139798.7U Active CN206992972U (en) | 2017-02-16 | 2017-02-16 | A kind of ac-dc converter circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206992972U (en) |
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2017
- 2017-02-16 CN CN201720139798.7U patent/CN206992972U/en active Active
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