CN204145316U - A kind of voltage-stabilized power supply circuit and stabilized voltage power supply - Google Patents
A kind of voltage-stabilized power supply circuit and stabilized voltage power supply Download PDFInfo
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- CN204145316U CN204145316U CN201420587244.XU CN201420587244U CN204145316U CN 204145316 U CN204145316 U CN 204145316U CN 201420587244 U CN201420587244 U CN 201420587244U CN 204145316 U CN204145316 U CN 204145316U
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims description 20
- 230000003287 optical effect Effects 0.000 claims description 18
- 239000004065 semiconductor Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Abstract
This application discloses voltage-stabilized power supply circuit, comprise: AC-DC change-over circuit and DC-DC change-over circuit, wherein said AC-DC change-over circuit adopts the operation principle of Switching Power Supply to design, described DC-DC change-over circuit adopts the operation principle of linear power supply to design, first adopt described AC-DC change-over circuit that the alternating current in electrical network is converted to direct current, ensure that the high efficiency performance of this voltage stabilizing circuit, adopt DC-DC change-over circuit to provide operating voltage to power consumption equipment again, thus reduce the interference problem when powering to other equipment.
Description
Technical field
The application relates to power technique fields, more particularly, relates to voltage-stabilized power supply circuit and the stabilized voltage power supply of a kind of integrated application Switching Power Supply and existing power supply.
Background technology
Switching Power Supply utilizes modern power electronics technology, the time scale that control switch pipe turns on and off, and maintains a kind of power supply of regulated output voltage, Switching Power Supply is small-sized with it, light weight and high efficiency feature be widely used in electronic equipment.
But there is comparatively serious switch interference in the course of the work in Switching Power Supply.During switching power supply work, the power adjustment switching transistor of Switching Power Supply is operated in the operating state of speed-sensitive switch switching, the alternating voltage that its produces and electric current, by producing spike interference during other components and parts in circuit and resonance disturbs, seriously can affect the normal work of complete machine.In addition because switching power supply oscillator does not have the isolation of Industrial Frequency Transformer, these interference will seal in common frequency power network, make neighbouring other electronic instruments, equipment and household electrical appliance be subject to serious interference.
Interference to miscellaneous equipment when therefore how to reduce prior art breaker in middle power work, becomes the technical problem that those skilled in the art are urgently to be resolved hurrily.
Utility model content
In view of this, the application provides a kind of voltage-stabilized power supply circuit, operationally its power supply unit is existed to the problem of interference for solving prior art breaker in middle power supply.
To achieve these goals, the existing scheme proposed is as follows:
A kind of voltage-stabilized power supply circuit, comprising:
AC-DC change-over circuit and DC-DC change-over circuit, the output of described AC-DC change-over circuit is connected with the input of described DC-DC change-over circuit;
Described AC-DC change-over circuit, comprising:
First transformer, the first end of the main winding of described first transformer is connected with electrical network by rectifier bridge;
Positive pole is connected with the first end of described first transformer, the first electric capacity of minus earth;
Anode and described first the first diode that transformer secondary output winding first end is connected, negative electrode is connected with first node, described first node is the output of described AC-DC change-over circuit;
Positive pole is connected with described first diode cathode the second electric capacity of minus earth and described first transformer secondary output winding second end;
The power supply control chip that first end is connected with sensitive device first end in optical coupler, second end of described power supply control chip is by the 3rd capacity earth, 3rd end of described power supply control chip is connected with the second end of described first transformer main winding, the second end ground connection of described optical coupler sensitive device;
One end is connected with described power supply control chip first end, the first resistance of other end ground connection;
The second resistance that one end is connected with described first diode cathode, the other end is connected with the luminescent device positive pole of described optical coupler;
Be connected to the 3rd resistance between the positive pole of the luminescent device of described optical coupler and negative pole;
One end is connected with the negative pole of the luminescent device of described optical coupler the 4th resistance that the other end is connected with described first node with the 5th resistance by the 4th electric capacity of connecting;
Negative electrode is connected with the negative pole of the luminescent device of described optical coupler, the controllable accurate source of stable pressure of plus earth, and the control end of described controllable accurate source of stable pressure is connected with the common port of the 5th resistance with described 4th electric capacity;
One end is connected with described controllable accurate source of stable pressure control end, the 6th resistance of other end ground connection;
Described DC-DC change-over circuit, comprising:
Step down voltage redulator circuit, the output of described step down voltage redulator circuit is as the first output of described voltage-stabilized power supply circuit;
The second diode that anode is connected with described step down voltage redulator circuit output end;
Drain electrode is connected with described second diode cathode, source electrode is as the first metal-oxide-semiconductor of the second output of described voltage-stabilized power supply circuit;
Base stage obtains the first triode of pulse control signal by the 7th resistance, and grounded emitter, the collector electrode of described first triode are connected with the grid of described first metal-oxide-semiconductor;
Be arranged on the 8th resistance between described first metal-oxide-semiconductor grid and drain electrode;
Be arranged on the 9th resistance between the base stage of described first triode and emitter;
Wherein step down voltage redulator circuit comprises the peripheral circuit of step down voltage redulator and described step down voltage redulator.
Preferably, above-mentioned voltage-stabilized power supply circuit, also comprises:
Be arranged on the thermistor between rectifier bridge and electrical network.
Preferably, above-mentioned voltage-stabilized power supply circuit, also comprises:
Be arranged on the piezo-resistance between electrical network Live line Zero line.
Preferably, above-mentioned voltage-stabilized power supply circuit, also comprises:
The 9th electric capacity that first end is connected with described transformer main winding first end;
With the 10th resistance of described 9th Capacitance parallel connection;
Negative electrode and described 9th the 3rd diode that electric capacity second end is connected, anode is connected with the second end of described main winding by the 11 resistance.
Preferably, above-mentioned voltage-stabilized power supply circuit, also comprises:
Be arranged on the first inductance between described first diode and described first node;
One end that positive pole is connected with first node with described first inductance is connected, the 5th electric capacity of minus earth.
Preferably, in above-mentioned voltage-stabilized power supply circuit, described first node comprises:
The 3rd diode that anode is connected with described first diode cathode, negative electrode is connected with described DC-DC change-over circuit.
Preferably, in above-mentioned voltage-stabilized power supply circuit, described power supply control chip is TNY275P chip;
The first end of described power supply control chip is the ENUV pin of TNY275P chip;
Second end of described power supply control chip is the BPM pin of TNY275P chip;
3rd end of described power supply control chip is the D pin of TNY275P chip.
Preferably, in above-mentioned voltage-stabilized power supply circuit, described step down voltage redulator is LM22676-ADJ transducer, and described peripheral circuit comprises:
One end is connected with the FB pin of described LM22676-ADJ transducer, the 12 resistance of other end ground connection;
Be connected to the 6th electric capacity between the SW pin of described LM22676-ADJ transducer and BOOT pin;
Negative electrode is connected with the SW pin of described LM22676-ADJ transducer, the voltage stabilizing didoe of plus earth;
The second inductance that first end is connected with the negative electrode of described voltage stabilizing didoe;
Positive pole is connected with the second end of described second inductance, the 7th electric capacity of minus earth;
The 13 resistance that one end is connected with the FB pin of described LM22676-ADJ transducer, the other end is connected with the common port of described 7th electric capacity with described second inductance;
With the 8th electric capacity of described 7th Capacitance parallel connection;
First end is connected with the positive pole of described 7th electric capacity, the second end is as the 3rd inductance of the first output of described voltage-stabilized power supply circuit.
Preferably, above-mentioned voltage-stabilized power supply circuit, also comprises:
The pulse-width controller be connected with described 7th resistance.
A kind of stabilized voltage power supply, comprising: voltage-stabilized power supply circuit disclosed in above-mentioned any one.
As can be seen from above-mentioned technical scheme, stabilized voltage power supply disclosed in the present application adopts, by the AC-DC change-over circuit of switching power circuit principle design, the alternating current in electrical network is converted to direct current, DC-DC change-over circuit again by being designed by the design philosophy of linear power source circuit provides operating voltage to power consumption equipment, thus reduces the interference problem when powering to other equipment.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The structure chart of a kind of voltage-stabilized power supply circuit that Fig. 1 provides for the embodiment of the present application;
The structure chart of a kind of voltage-stabilized power supply circuit that Fig. 2 provides for another embodiment of the application;
The structure chart of a kind of step down voltage redulator circuit that Fig. 3 provides for the embodiment of the present application.
Embodiment
Be directed to the problem that Switching Power Supply of the prior art is operationally large to the interference of other equipment, this application discloses a kind of voltage-stabilized power supply circuit.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Applicant finds through research, and power supply conventional in prior art is generally linear power supply or Switching Power Supply, and ripple and the interference in linear piezoelectric source are little, and dynamic characteristic can comparatively Switching Power Supply will be got well, but the power consumption of self is relatively very large, and efficiency is lower.Thus, applicant devises a kind of stabilized voltage power supply adopting Switching Power Supply and linear power supply to combine, with the problem that the interference solving Switching Power Supply of the prior art is large.
The structure chart of Fig. 1 voltage-stabilized power supply circuit disclosed in the embodiment of the present application, see Fig. 1, disclosed in the above embodiments of the present application, voltage-stabilized power supply circuit comprises:
AC-DC change-over circuit 1 and DC-DC change-over circuit 2, the output of described AC-DC change-over circuit 1 is connected with the input of described DC-DC change-over circuit 2;
Described AC-DC change-over circuit 1, comprising:
First transformer T, the first end of the main winding of described first transformer T is connected with electrical network by rectifier bridge D;
Positive pole is connected with the first end of described first transformer T, the first electric capacity C1 of minus earth;
The first diode D1 that anode is connected with the secondary winding first end of described first transformer T, negative electrode is connected with first node J, described first node J are the output of described AC-DC change-over circuit;
Positive pole is connected with described first diode D1 negative electrode the second electric capacity C2 of secondary winding second end of minus earth and described first transformer T;
The power supply control chip 101 that first end is connected with sensitive device first end in optical coupler U1, second end of described power supply control chip 101 is by the 3rd electric capacity C3 ground connection, 3rd end of described power supply control chip 101 is connected with the second end of described first transformer T main winding, the second end ground connection of the sensitive device of described optical coupler U1;
One end is connected with described power supply control chip 101 first end, the first resistance R1 of other end ground connection;
The second resistance R2 that one end is connected with described first diode D1 negative electrode, the other end is connected with the luminescent device positive pole of described optical coupler U1;
Be connected to the 3rd resistance R2 between the positive pole of the luminescent device of described optical coupler U1 and negative pole;
One end is connected with the negative pole of the luminescent device of described optical coupler U1 the 4th resistance R4 that the other end is connected with described first node J with the 5th resistance R5 by the 4th electric capacity C4 that connects;
Negative electrode is connected with the negative pole of the luminescent device of described optical coupler U1, the controllable accurate source of stable pressure TL of plus earth, and the control end of described controllable accurate source of stable pressure TL is connected with the common port of the 5th resistance R5 with described 4th electric capacity C4;
One end is connected with the control end of described controllable accurate source of stable pressure TL, the 6th resistance R6 of other end ground connection;
Described DC-DC change-over circuit 2, comprising:
Step down voltage redulator circuit 201, the output of described step down voltage redulator circuit 201 is as the first output of described voltage-stabilized power supply circuit;
The second diode D2 that anode is connected with described step down voltage redulator circuit 201 output;
Drain electrode is connected with described second diode D2 negative electrode, source electrode is as the first metal-oxide-semiconductor M1 of the second output of described voltage-stabilized power supply circuit;
Base stage obtains the first triode Q1 of pulse control signal by the 7th resistance R7, and grounded emitter, the collector electrode of described first triode Q1 are connected with the grid of described first metal-oxide-semiconductor M1;
Be arranged on the 8th resistance R8 between the grid of described first metal-oxide-semiconductor M1 and drain electrode;
Be arranged on the 9th resistance R9 between the base stage of described first triode Q1 and emitter;
Wherein step down voltage redulator circuit 201 comprises the peripheral circuit of step down voltage redulator and described step down voltage redulator.
By the above-mentioned description to voltage-stabilized power supply circuit disclosed in the embodiment of the present application, those skilled in the art are not difficult to find, described in the above-mentioned voltage-stabilized power supply circuit of the application, AC-DC change-over circuit essence is switching power circuit, described DC-DC change-over circuit essence is linear power source circuit, the essence of technical scheme disclosed in the above embodiments of the present application is combined with linear power source circuit by described switching power circuit, provides a kind of and have described Switching Power Supply high efficiency voltage-stabilized power supply circuit less to the interference of other equipment again simultaneously.See technical scheme disclosed in the above embodiments of the present application, alternating current in electrical network is converted to direct current by the AC-DC change-over circuit adopting switching power circuit to design due to the application, ensure that the high efficiency performance of this voltage stabilizing circuit, simultaneously, adopt the DC-DC change-over circuit designed by the design philosophy of linear power source circuit to provide operating voltage to power consumption equipment, thus reduce the interference problem when powering to other equipment.
Be understandable that, when described stabilized voltage power supply starts, it is there is surge phenomenon that alternating current in electrical network enters this voltage-stabilized power supply circuit, if do not processed it, the circuit devcie in described voltage-stabilized power supply circuit may be caused to burn, therefore see Fig. 2, above-mentioned voltage-stabilized power supply circuit can also comprise one and be arranged on thermistor PCT between rectifier bridge and electrical network.
Be understandable that, in thunder and lightning weather, occur that lightning splits middle power network line sometimes, power network line is made to enter in user family, burn the phenomenon of power consumption equipment, therefore, cause to prevent thunder and lightning occurring ultra high voltage suddenly in electrical network and the phenomenon of burning stabilized voltage power supply disclosed in the above embodiments of the present application, in the above embodiments of the present application, see Fig. 2, can also comprise a piezo-resistance VRA between described rectifier bridge D and electrical network, described piezo-resistance VRA is connected between two power network wiring ends of described rectifier bridge D.
Be understandable that, in the above embodiments of the present application, can also arrange a RC uptake pathway between the Same Name of Ends of the main winding of described transformer, different name end, this concrete RC uptake pathway comprises:
The 9th electric capacity C9 that first end is connected with the main winding first end of described transformer T;
10th resistance in parallel with described 9th electric capacity C9;
Negative electrode and described 9th the 3rd diode D3 that electric capacity C9 second end is connected, anode is connected with the second end of described main winding by the 11 resistance R11.
Be understandable that, see Fig. 2, the described transformer secondary output winding place in the above embodiments of the present application can also arrange a LC oscillating circuit, and concrete described oscillating circuit comprises:
Be arranged on the first inductance L 1 between described first diode D1 and described first node J;
One end that positive pole is connected with described first node J with described first inductance L 1 is connected, the 5th electric capacity C5 of minus earth.
In order to prevent backflow phenomena, above-mentioned first node in the embodiment of the present application can be one the 3rd diode D3, the anode of described 3rd diode D3 is connected with described first diode D1 negative electrode, negative electrode is connected with described DC-DC change-over circuit, now, the anode of described 3rd diode D3 uses as above-mentioned first node, and the negative electrode of described 3rd diode is connected with subsequent conditioning circuit.
Be understandable that, the particular type of the described power supply control chip in the above embodiments of the present application can need to select voluntarily according to user, such as described power supply control chip can be, TNY275P chip, when adopting described TNY275P chip as power supply control chip in the above embodiments of the present application, the first end of described power supply control chip is the ENUV pin of TNY275P chip; Second end of described power supply control chip is the BPM pin of TNY275P chip; 3rd end of described power supply control chip is the D pin of TNY275P chip.
In like manner, the step down voltage redulator circuit in the above embodiments of the present application can comprise the peripheral circuit of LM22676-ADJ transducer and described LM22676-ADJ transducer, and see Fig. 3, the peripheral circuit of described LM22676-ADJ transducer can comprise:
One end is connected with the FB pin of described LM22676-ADJ transducer, the 12 resistance R12 of other end ground connection;
Be connected to the 6th electric capacity C6 between the SW pin of described LM22676-ADJ transducer and BOOT pin;
Negative electrode is connected with the SW pin of described LM22676-ADJ transducer, the voltage stabilizing didoe D4 of plus earth;
The second inductance L 2 that first end is connected with the negative electrode of described voltage stabilizing didoe D4;
Positive pole is connected with the second end of described second inductance L 2, the 7th electric capacity C7 of minus earth;
The 13 resistance R13 that one end is connected with the FB pin of described LM22676-ADJ transducer, the other end is connected with the common port of described 7th electric capacity C7 with described second inductance L 2;
The eight electric capacity C8 in parallel with described 7th electric capacity C7;
First end is connected with the positive pole of described 7th electric capacity C7, the second end is as the 3rd inductance L 3 of the first output of described voltage-stabilized power supply circuit.
Be understandable that, in order to the above-mentioned stabilized voltage power supply of the application can be convenient by described 7th resistance R7 acquisition G_PWC pulse control signal, the voltage-stabilized power supply circuit in the above embodiments of the present application can also comprise a pulse-width controller be connected with described 7th resistance R7.
Be understandable that, corresponding to above-mentioned voltage-stabilized power supply circuit, disclosed herein as well is the stabilized voltage power supply of the described voltage-stabilized power supply circuit of an application, described stabilized voltage power supply comprises voltage-stabilized power supply circuit and housing disclosed in the above-mentioned any embodiment of the application.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a voltage-stabilized power supply circuit, is characterized in that, comprising:
AC-DC change-over circuit and DC-DC change-over circuit, the output of described AC-DC change-over circuit is connected with the input of described DC-DC change-over circuit;
Described AC-DC change-over circuit, comprising:
First transformer, the first end of the main winding of described first transformer is connected with electrical network by rectifier bridge;
Positive pole is connected with the first end of described first transformer, the first electric capacity of minus earth;
Anode and described first the first diode that transformer secondary output winding first end is connected, negative electrode is connected with first node, described first node is the output of described AC-DC change-over circuit;
Positive pole is connected with described first diode cathode the second electric capacity of minus earth and described first transformer secondary output winding second end;
The power supply control chip that first end is connected with sensitive device first end in optical coupler, second end of described power supply control chip is by the 3rd capacity earth, 3rd end of described power supply control chip is connected with the second end of described first transformer main winding, the second end ground connection of described optical coupler sensitive device;
One end is connected with described power supply control chip first end, the first resistance of other end ground connection;
The second resistance that one end is connected with described first diode cathode, the other end is connected with the luminescent device positive pole of described optical coupler;
Be connected to the 3rd resistance between the positive pole of the luminescent device of described optical coupler and negative pole;
One end is connected with the negative pole of the luminescent device of described optical coupler the 4th resistance that the other end is connected with described first node with the 5th resistance by the 4th electric capacity of connecting;
Negative electrode is connected with the negative pole of the luminescent device of described optical coupler, the controllable accurate source of stable pressure of plus earth, and the control end of described controllable accurate source of stable pressure is connected with the common port of the 5th resistance with described 4th electric capacity;
One end is connected with described controllable accurate source of stable pressure control end, the 6th resistance of other end ground connection;
Described DC-DC change-over circuit, comprising:
Step down voltage redulator circuit, the output of described step down voltage redulator circuit is as the first output of described voltage-stabilized power supply circuit;
The second diode that anode is connected with described step down voltage redulator circuit output end;
Drain electrode is connected with described second diode cathode, source electrode is as the first metal-oxide-semiconductor of the second output of described voltage-stabilized power supply circuit;
Base stage obtains the first triode of pulse control signal by the 7th resistance, and grounded emitter, the collector electrode of described first triode are connected with the grid of described first metal-oxide-semiconductor;
Be arranged on the 8th resistance between described first metal-oxide-semiconductor grid and drain electrode;
Be arranged on the 9th resistance between the base stage of described first triode and emitter;
Wherein step down voltage redulator circuit comprises the peripheral circuit of step down voltage redulator and described step down voltage redulator.
2. voltage-stabilized power supply circuit according to claim 1, is characterized in that, also comprises:
Be arranged on the thermistor between rectifier bridge and electrical network.
3. voltage-stabilized power supply circuit according to claim 1, is characterized in that, also comprises:
Be arranged on the piezo-resistance between electrical network Live line Zero line.
4. voltage-stabilized power supply circuit according to claim 1, is characterized in that, also comprises:
The 9th electric capacity that first end is connected with described transformer main winding first end;
With the 10th resistance of described 9th Capacitance parallel connection;
Negative electrode and described 9th the 3rd diode that electric capacity second end is connected, anode is connected with the second end of described main winding by the 11 resistance.
5. voltage-stabilized power supply circuit according to claim 1, is characterized in that, also comprises:
Be arranged on the first inductance between described first diode and described first node;
One end that positive pole is connected with first node with described first inductance is connected, the 5th electric capacity of minus earth.
6. voltage-stabilized power supply circuit according to claim 1, is characterized in that, described first node comprises:
The 3rd diode that anode is connected with described first diode cathode, negative electrode is connected with described DC-DC change-over circuit.
7. voltage-stabilized power supply circuit according to claim 1, is characterized in that, described power supply control chip is TNY275P chip;
The first end of described power supply control chip is the ENUV pin of TNY275P chip;
Second end of described power supply control chip is the BPM pin of TNY275P chip;
3rd end of described power supply control chip is the D pin of TNY275P chip.
8. voltage-stabilized power supply circuit according to claim 1, is characterized in that, described step down voltage redulator is LM22676-ADJ transducer, and described peripheral circuit comprises:
One end is connected with the FB pin of described LM22676-ADJ transducer, the 12 resistance of other end ground connection;
Be connected to the 6th electric capacity between the SW pin of described LM22676-ADJ transducer and BOOT pin;
Negative electrode is connected with the SW pin of described LM22676-ADJ transducer, the voltage stabilizing didoe of plus earth;
The second inductance that first end is connected with the negative electrode of described voltage stabilizing didoe;
Positive pole is connected with the second end of described second inductance, the 7th electric capacity of minus earth;
The 13 resistance that one end is connected with the FB pin of described LM22676-ADJ transducer, the other end is connected with the common port of described 7th electric capacity with described second inductance;
With the 8th electric capacity of described 7th Capacitance parallel connection;
First end is connected with the positive pole of described 7th electric capacity, the second end is as the 3rd inductance of the first output of described voltage-stabilized power supply circuit.
9. voltage-stabilized power supply circuit according to claim 1, is characterized in that, also comprises:
The pulse-width controller be connected with described 7th resistance.
10. a stabilized voltage power supply, is characterized in that, comprising: voltage-stabilized power supply circuit disclosed in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420587244.XU CN204145316U (en) | 2014-10-11 | 2014-10-11 | A kind of voltage-stabilized power supply circuit and stabilized voltage power supply |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420587244.XU CN204145316U (en) | 2014-10-11 | 2014-10-11 | A kind of voltage-stabilized power supply circuit and stabilized voltage power supply |
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| CN204145316U true CN204145316U (en) | 2015-02-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242689A (en) * | 2014-10-11 | 2014-12-24 | 国网浙江宁波市鄞州区供电公司 | Voltage-stabilizing power circuit and voltage-stabilizing power supply |
| CN109473946A (en) * | 2018-12-21 | 2019-03-15 | 伏诺瓦(天津)科技有限公司 | Self-test lightning protection box |
-
2014
- 2014-10-11 CN CN201420587244.XU patent/CN204145316U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242689A (en) * | 2014-10-11 | 2014-12-24 | 国网浙江宁波市鄞州区供电公司 | Voltage-stabilizing power circuit and voltage-stabilizing power supply |
| CN104242689B (en) * | 2014-10-11 | 2017-09-08 | 国网浙江宁波市鄞州区供电公司 | A kind of voltage-stabilized power supply circuit and voltage-stabilized power supply |
| CN109473946A (en) * | 2018-12-21 | 2019-03-15 | 伏诺瓦(天津)科技有限公司 | Self-test lightning protection box |
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