CN207652303U

CN207652303U - One kind can turn DC communication formula power circuit

Info

Publication number: CN207652303U
Application number: CN201721653830.XU
Authority: CN
Inventors: 吴应斌
Original assignee: BEIJING LIYUAN XINGDA TECHNOLOGY Co Ltd
Current assignee: BEIJING LIYUAN XINGDA TECHNOLOGY Co Ltd
Priority date: 2017-12-01
Filing date: 2017-12-01
Publication date: 2018-07-24
Anticipated expiration: 2027-12-01

Abstract

The utility model discloses one kind can turning DC communication formula power circuit, it is intended to solve the problems, such as to need to electric current output and electric current supply source position individually test to cause power supply test inconvenience, testing cost high when not having direct switching to connect thus test power supply between the electric current output of power circuit in the prior art and electric current supply source；The application is cleverly provided with double pole double throw switch in AC to DC converter circuit, when the output switch contacts of DPDT switching circuits are connected with the first input adapter of commutator, power circuit exports alternating current, when the output switch contacts of DPDT switching circuits are connected with the second out splice going splice of commutator, power circuit exports direct current, test when only need the state to DPDT switching circuits switch over can control circuit output type, to simplify the test of power circuit, the application is suitable for power circuit and power supply test related field.

Description

One kind can turn DC communication formula power circuit

Technical field

The utility model is related to power circuit related fields, and in particular to one kind can turn DC communication formula power circuit.

Background technology

Power supply is the essential part of existing electrical equipment, some electric appliances can directly use Alternating Current Power Supply, some It is powered using direct current.So just there is corresponding device that alternating current conversion direct current may be implemented, or exchange may be implemented and turn Change direct current, or but general power circuit direct current is provided or alternating current is provided, and usually exchange turns direct current and only needs Choke is set.Each Power Management Design out is required to be detected later, is not only detected to the electric current of output, Source is provided to electric current to test, in debugging process, then need the position of ceaselessly conversion testing instrument, first connect electric current carry-out bit It sets and is tested, then connect current input section and tested, but re-test current input section, current output circuit portions are just It needs to dismantle, on the one hand leads to the work of test man, if on the other hand electric current output provides source apart from larger, test with electric current Difficulty and cost will greatly increase.

Invention content

The purpose of this utility model is that：For between the electric current output of power circuit in the prior art and electric current supply source Not direct switching connection thus need to where electric current output and electric current supply source when test power supply Position, which carries out individually test, leads to the problem that power supply test is inconvenient, testing cost is high, and this application provides one kind can turning straight Flow AC system power circuit.

The technical solution adopted in the utility model is as follows：

One kind can turn DC communication formula power circuit, and power circuit includes：

Alternating current source：Alternating current source is provided for circuit；

First ac filter circuit：It receives the ac signal that alternating current source is exported and is filtered to obtain the first filtered electrical Signal；

Bridge type rectifier：It receives the first filtered electrical signal that the first ac filter circuit is exported and is converted into direct current Signal；

DC filtering circuit:It receives the DC signal that bridge type rectifier is exported and is filtered to obtain filtering direct current Electric signal；

DPDT switching circuits：Including the first input adapter of commutator, the second out splice going splice of commutator and output switch Connector, the first input adapter of commutator are connected with the output of the alternating current source, the second out splice going splice of commutator with it is described straight The output for flowing filter circuit is connected；

The output switch contacts of DPDT switching circuits selectively export DC signal or ac signal.

In said program, further, first ac filter circuit includes the 5th capacitance C5, the first common mode choke Z2 and the second diode S2；

The both ends of the 5th capacitance C5 are respectively connected to the first potential point a, the second current potential with the both ends of the alternating current source Point b；

The both ends of the second diode S2 are also connected to the first potential point a, the second potential point b；

Two input terminals of the first common mode choke Z2 are connected respectively to the first potential point a, the second potential point b.

Further include the second ac filter circuit further in said program, the second ac filter circuit setting Between first ac filter circuit and the bridge type rectifier；Second ac filter circuit includes the second common mode Choke Z1, the 8th resistance R8, the 7th resistance R7, third capacitance C3, the 4th capacitance C4 and the second capacitance C2；

The both ends of the 4th capacitance C4 respectively with the first output end of the first common mode choke Z2 and second output terminal phase Even；

After the third capacitance C3 and the second capacitance C2 connections, the other end and the first common mode choke of the second capacitance C2 The first output end of Z2 is connected, and the other end of third capacitance C3 is connected with the second output terminal of the first common mode choke Z2；

After the 7th resistance R7 and the 8th resistance R8 connections, the other end and the first common mode choke of the 7th resistance R7 The first output end of Z2 is connected, and the other end of the 8th resistance R8 is connected with the second output terminal of the first common mode choke Z2；

The input terminal of the second common mode choke Z1 is connected with the output end of the first common mode choke Z2, and the second common mode is gripped The output end of stream device Z1 is connected with the output end of bridge type rectifier.

Specifically, further include discharge circuit, the input of the discharge circuit is connected with the output of DC filtering circuit, described The output of discharge circuit is connected with the output of DPDT switching circuits.

In said program, further, the discharge circuit by first resistor R1, second resistance R2,3rd resistor R3, 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 9th resistance R9, the tenth resistance R10 connected with eleventh resistor R10 and At.

Specifically, the capacity that the DC filtering circuit includes the first capacitance C1, C1 is 120uF.

In said program, fuse is provided between preferably described first ac filter circuit and bridge type rectifier.

In conclusion by adopting the above-described technical solution, the utility model has the beneficial effects that：

1. double pole double throw switch (DPDT switch, this Shen are cleverly provided in the application in AC to DC converter circuit Please in be DPDT switching circuits), when the output switch contacts of DPDT switching circuits are connected with the first input adapter of commutator When power circuit export alternating current, when the output switch contacts of DPDT switching circuits are connected with the second out splice going splice of commutator Power circuit exports direct current, ingenious easily to realize the direct current of power circuit and the conversion exchanged, is only needed in test To the state of DPDT switching circuits switch over can control circuit output type, to simplify the survey of power circuit Examination, the individual test that distance difference where avoiding electric current output and electric current supply source far needs to carry out back and forth lead to electricity The problem that source test is inconvenient, testing cost is high；

2. being additionally provided with the second ac filter circuit in the application, two ac filter circuits can be preferably to alternating current It is filtered, the alternating current of output is made more to stablize；

3. being additionally provided with discharge circuit in the application, discharge circuit mainly avoids circuit voltage in exchanging when switching with direct current The problem of increase causes circuit to damage suddenly；

4. the application is also provided with fuse between the first ac filter circuit and bridge type rectifier, first is avoided The problem of causing bridge type rectifier to damage when the output of ac filter circuit is unstable.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other attached drawings.Attached drawing does not press actual size equal proportion scaling deliberately and draws attached drawing, it is preferred that emphasis is shows this The purport of utility model.

Fig. 1 is the implementation module map one of the application power circuit；

Fig. 2 is the implementation module map two of the application power circuit；

Fig. 3 is the physical circuit figure of the application power circuit；

Reference numeral：

100- alternating current sources；The first ac filter circuits of 10-；The second ac filter circuits of 20-；30- bridge type rectifiers； 40- DC filtering circuits；50- discharge circuits；60-DPDT switching circuits；200- direct current output equipment.

Specific implementation mode

It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

Embodiment one

It can turn DC communication formula power circuit the present embodiment provides one kind and specifically include referring to Figure 1 and Figure 3：

Alternating current source 100：Alternating current source is provided for circuit；

First ac filter circuit 10：It receives the ac signal that alternating current source 100 is exported and is filtered to obtain first Filtered electrical signal；

Bridge type rectifier 30：It receives the first filtered electrical signal that the first ac filter circuit 10 is exported and is converted into straight Galvanic electricity signal；

DC filtering circuit 40:It receives the DC signal that bridge type rectifier 30 is exported and is filtered and filtered DC signal；

The output switch contacts of DPDT switching circuits 60 selectively export DC signal or ac signal；

DPDT open circuits 60：It is connect including the first input adapter of commutator, the second out splice going splice of commutator and output switch Head, the first input adapter of commutator are connected with the output of the alternating current source 100, the second out splice going splice of commutator with it is described straight The output for flowing filter circuit 40 is connected；

Wherein, the first ac filter circuit 10 specifically includes the 5th capacitance C5, the first common mode choke Z2 and the two or two Pole pipe S2；

The both ends of the 5th capacitance C5 are respectively connected to the first potential point a, the second electricity with the both ends of the alternating current source 100 Site b；

Two input terminals of the first common mode choke Z2 are connected respectively to the first potential point a, the second potential point b；

Two output ends of first common mode choke Z2 and the both ends of 30 amount of bridge type rectifier are respectively connected with；

Wherein, the other both ends of bridge type rectifier 30 are connected with DC filtering circuit 40；

It is 120uF that DC filtering circuit 40, which directly uses the capacity of the first capacitance C1, C1,；

DPDT is switched when the output switch contacts of the DPDT switching circuits 60 are connected with the first input adapter of commutator The output switch contacts of circuit 60 are the output ends of alternating current；

DPDT is switched when the output switch contacts of the DPDT switching circuits 60 are connected with the second out splice going splice of commutator The output switch contacts of circuit 60 are the output ends of direct current；

The other end of the wherein output switch contacts of DPDT switching circuits 60 is connected with direct current output equipment 200, in other words, When the output switch contacts of DPDT switching circuits 60 are connected with the second out splice going splice of commutator, DPDT switching circuits 60 it is defeated It is alternating current to go out switch contacts to export to direct current output equipment 200；When DPDT switching circuits 60 output switch contacts with it is double When the first input adapter of throw switch is connected, the output switch contacts output of DPDT switching circuits 60 is exactly alternating current；

100 unlimited alternating voltage of alternating current source；Direct current output equipment 200 can be that DC load can also be at DC current Reason circuit is directly power supply test equipment, is configured with specific reference to actual conditions.

Embodiment two

On the basis of the above embodiments, referring to figs. 2 and 3, further include the second ac filter circuit 20, described second hands over Filter circuit 20 is flowed to be arranged between first ac filter circuit 10 and the bridge type rectifier 30；Second exchange Filter circuit 20 include the second common mode choke Z1, the 8th resistance R8, the 7th resistance R7, third capacitance C3, the 4th capacitance C4 and Second capacitance C2；

The input terminal of the second common mode choke Z1 is connected with the output end of the first common mode choke Z2, and the second common mode is gripped The output end of stream device Z1 is connected with the output end of bridge type rectifier 30；

Wherein it should be noted that when the second ac filter circuit 20 are arranged, the two of the first common mode choke Z2 are defeated The both ends of outlet and 30 amount of bridge type rectifier are no longer directly connected to；But the input terminal of the second common mode choke Z1 and first is total to The output end of mould choke Z2 is connected, and the output end of the second common mode choke Z1 is connected with the output end of bridge type rectifier 30.

Embodiment three

In the above-described embodiments, referring to figs. 2 and 3, further include discharge circuit 50, the input of the discharge circuit 50 with it is straight The output for flowing filter circuit 40 is connected, and the output of the discharge circuit 50 is connected with the output of DPDT switching circuits 60；

The discharge circuit 50 is by first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 9th resistance R9, the tenth resistance R10 and eleventh resistor R10 are connected with each other, and are connected such as Fig. 3 institutes Show, belong to conventional arrangement herein, the application no longer specifically connects circuit and is described in detail；

Wherein, in the above-described embodiments, physical circuit can accordingly be replaced according to actual demand, the tool of the application Body circuit does not represent all embodiments of the technical solution of the application.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Belong to those skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in all are answered It is included within the scope of the present invention.

Claims

1. one kind can turn DC communication formula power circuit, which is characterized in that including：

Alternating current source (100)：Alternating current source is provided for circuit；

First ac filter circuit (10)：Receive the ac signal that alternating current source (100) is exported；

Bridge type rectifier (30)：Receive the first filtered electrical signal that the first ac filter circuit (10) is exported；

DC filtering circuit (40):Receive the DC signal that bridge type rectifier (30) is exported；

DPDT switching circuits (60)：Including the first input adapter of commutator, the second out splice going splice of commutator and output switch Connector, the first input adapter of commutator are connected with the output of the alternating current source (100), the second out splice going splice of commutator and institute The output for stating DC filtering circuit (40) is connected；

The output switch contacts of DPDT switching circuits (60) selectively export DC signal or ac signal.

2. one kind as described in claim 1 can turn DC communication formula power circuit, which is characterized in that first ac filter Circuit (10) includes the 5th capacitance C5, the first common mode choke Z2 and the second diode S2；

The both ends of the 5th capacitance C5 are respectively connected to the first potential point a, the second current potential with the both ends of the alternating current source (100) Point b；

3. one kind as claimed in claim 2 can turn DC communication formula power circuit, which is characterized in that further include the second exchange filter Wave circuit (20), second ac filter circuit (20) are arranged in first ac filter circuit (10) and the bridge type Between rectifier (30)；Second ac filter circuit (20) includes the second common mode choke Z1, the 8th resistance R8, the 7th electricity Hinder R7, third capacitance C3, the 4th capacitance C4 and the second capacitance C2；

The both ends of the 4th capacitance C4 are connected with the first output end of the first common mode choke Z2 with second output terminal respectively；

After the third capacitance C3 and the second capacitance C2 connections, the other end of the second capacitance C2 and the first common mode choke Z2's First output end is connected, and the other end of third capacitance C3 is connected with the second output terminal of the first common mode choke Z2；

After the 7th resistance R7 and the 8th resistance R8 connections, the other end of the 7th resistance R7 and the first common mode choke Z2's First output end is connected, and the other end of the 8th resistance R8 is connected with the second output terminal of the first common mode choke Z2；

The input terminal of the second common mode choke Z1 is connected with the output end of the first common mode choke Z2, the second common mode choke The output end of Z1 is connected with the output end of bridge type rectifier (30).

4. one kind as described in claim 1 can turn DC communication formula power circuit, which is characterized in that further include discharge circuit (50), the input of the discharge circuit (50) is connected with the output of DC filtering circuit (40), the discharge circuit (50) it is defeated Go out and is connected with the output of DPDT switching circuits (60).

5. one kind as claimed in claim 4 can turn DC communication formula power circuit, which is characterized in that the discharge circuit (50) By first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 9th resistance R9, the tenth resistance R10 and eleventh resistor R10 are formed by connecting.

6. one kind as described in claim 1 can turn DC communication formula power circuit, which is characterized in that the DC filtering circuit (40) capacity including the first capacitance C1, the first capacitance C1 is 120uF.

7. one kind as described in claim 1 can turn DC communication formula power circuit, which is characterized in that first ac filter It is provided with fuse between circuit (10) and bridge type rectifier (30).