CN203289316U - Soft start circuit and DC conversion power source - Google Patents
Soft start circuit and DC conversion power source Download PDFInfo
- Publication number
- CN203289316U CN203289316U CN2013203265486U CN201320326548U CN203289316U CN 203289316 U CN203289316 U CN 203289316U CN 2013203265486 U CN2013203265486 U CN 2013203265486U CN 201320326548 U CN201320326548 U CN 201320326548U CN 203289316 U CN203289316 U CN 203289316U
- Authority
- CN
- China
- Prior art keywords
- soft starting
- starting circuit
- voltage
- diode
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a soft start circuit and a DC conversion power source. The soft start circuit includes a resistor, a diode, a switch and an anti-surge device. The resistor is connected with the diode in series, so that a branch circuit is formed. The switch is connected with the branch circuit in parallel and then one end of the switch is connected with one end of a power receiver while the other end serves as one wiring terminal of a power source. The other end of the power receiver serves as the other wiring terminal of the power source. The anti-surge device is connected with the diode in parallel. Impedance of the anti-surge device is infinitely great when the anti-surge device is withstanding backward voltage of working voltage of the soft start circuit while impedance of the anti-surge device is smaller than predetermined impedance when the anti-surge device is withstanding backward surge voltage. By adopting the scheme provided by the utility model, circuit reliability can be improved.
Description
Technical field
The utility model relates to electronic technology field, relates in particular to a kind of soft starting circuit and dc transformating power.
Background technology
All can adopt soft starting circuit to be powered object with protection at present a lot of electronic equipments.For example in dc transformating power, soft starting circuit commonly used as shown in Figure 1, comprise divider resistance R, diode D, normal open switch K1, normally closed switch K2 and power circuit, power circuit is specially the DC/DC circuit, and wherein, resistance R, diode D and normally closed switch K2 series connection are a branch road, this branch circuit parallel connection of normal open switch K1, an end after parallel connection connects an end of power circuit, and the other end is as terminals of power supply, and the other end of power circuit is as another terminals of this power supply.In soft start-up process, normal open switch K1 is in off-state, and the diode D in circuit can be anti-with the positive and negative termination of input power in user misoperation, i.e. during the reverse voltage of circuit input service voltage, make circuit be in open-circuit condition, the protection power circuit.
Yet circumstance complication, probably meet with the situations such as thunderbolt in actual applications, makes circuit input surge voltage, namely exceeds the instant high-voltage of normal working voltage.If in soft start-up process, inputted a surge voltage from the negative terminals of power supply, i.e. during circuit input reverse surge voltage, the reverse voltage that diode D bears at two ends is larger, may cause the breakdown damage of diode D, and the reliability of circuit is lower.
The utility model content
The utility model embodiment provides a kind of soft starting circuit and dc transformating power, in order to improve circuit reliability.
The utility model embodiment provides a kind of soft starting circuit, comprises resistance, diode, switch and Anti-surging device, wherein:
Described resistance and the series connection of described diode are a branch road;
Described switch and described branch circuit parallel connection, the end after parallel connection connects an end that is powered object, and the other end is as terminals of power supply;
The described other end of object another terminals as described power supply that are powered;
Described Anti-surging device and described diodes in parallel, the impedance of described Anti-surging device when the reverse voltage of the operating voltage of bearing described soft starting circuit is for infinitely great, and the impedance when bearing reverse surge voltage is less than default impedance.
The utility model embodiment also provides a kind of soft starting circuit, comprises resistance, diode, switch and Anti-surging device, wherein:
One end of described resistance be connected the terminals of an end of the switch link after connecting as power supply;
The other end of described resistance connects an end of described diode, and connects an end of described Anti-surging device;
The other end of described diode connects the other end of described switch, and connects an end that is powered object;
The described other end that is powered object be connected the other end of the Anti-surging device link after connecting another terminals as described power supply;
The impedance of described Anti-surging device when the reverse voltage of the operating voltage of bearing the operating voltage of described soft starting circuit, described soft starting circuit is for infinitely great, and the impedance when bearing reverse surge voltage is less than default impedance.
The utility model embodiment also provides a kind of dc transformating power, comprises above-mentioned arbitrary soft starting circuit.
The scheme that the utility model embodiment provides; at the two ends of diode Anti-surging device in parallel; when the reverse voltage of soft starting circuit input service voltage; the impedance of this Anti-surging device is infinitely great; namely open a way; and when this soft starting circuit input reverse surge voltage; the impedance of this Anti-surging device is less than default impedance; can release to surge voltage; reduce the reverse voltage that bear at the diode two ends; and then can avoid the breakdown damage of diode, and circuit devcie is played a protective role, improve the reliability of circuit.
Description of drawings
Accompanying drawing is used to provide further understanding of the present utility model, and forms the part of specification, with the utility model embodiment one, is used from explanation the utility model, does not form restriction of the present utility model.In the accompanying drawings:
Fig. 1 is soft starting circuit schematic diagram in prior art;
One of soft starting circuit schematic diagram that Fig. 2 provides for the utility model embodiment;
The soft starting circuit schematic diagram that Fig. 3 provides for the utility model embodiment 1;
The soft starting circuit schematic diagram that Fig. 4 provides for the utility model embodiment 2;
Two of the soft starting circuit schematic diagram that Fig. 5 provides for the utility model embodiment;
The soft starting circuit schematic diagram that Fig. 6 provides for the utility model embodiment 3.
Embodiment
In order to provide the implementation of the higher soft starting circuit of reliability, the utility model embodiment provides a kind of soft starting circuit and dc transformating power, below in conjunction with Figure of description, preferred embodiment of the present utility model is described, be to be understood that, preferred embodiment described herein only is used for description and interpretation the utility model, and is not used in restriction the utility model.And in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.
The utility model embodiment provides a kind of soft starting circuit, as shown in Figure 2, comprises resistance R, diode D, K switch 1 and Anti-surging device, wherein:
Resistance R and diode D series connection are a branch road; K switch 1 and this branch circuit parallel connection, the end after parallel connection connects an end that is powered object, and the other end is as terminals of power supply; Be powered the other end of object another terminals as this power supply; Anti-surging device and diode D are in parallel, and the impedance of this Anti-surging device when the reverse voltage of the operating voltage of bearing this soft starting circuit is for infinitely great, and the impedance when bearing reverse surge voltage is less than default impedance.
Namely in soft start-up process, when the reverse voltage of this soft starting circuit input service voltage, the impedance of this Anti-surging device is infinitely great, and circuit is in open-circuit condition; When this soft starting circuit input reverse surge voltage, the impedance of this Anti-surging device is less than default impedance, and circuit is in channel status.
Concrete condition when wherein, default impedance can be according to practical application is set.
Further, this Anti-surging device is specifically as follows Transient Voltage Suppressor, and can be unidirectional Transient Voltage Suppressor, also can be bidirectional transient voltage suppressor.
Further, this Anti-surging device specifically also can be electric capacity.
Being powered object and can being a power electronic device in above-mentioned soft starting circuit, also can be circuit etc.
Further, go back soft starting circuit and can also comprise another K switch 2, resistance R, diode D and this K switch 2 are connected into a branch road, and K switch 1 and this branch circuit parallel connection, when input voltage is too high, can disconnect this K switch 2, with protection, is powered object.
Below, based on the different implementation of Anti-surging device, by reference to the accompanying drawings, with specific embodiment, above-mentioned soft starting circuit is described in detail.
Embodiment 1:
The utility model embodiment 1 provides a kind of soft starting circuit, as shown in Figure 3, comprises resistance R, diode D, normal open switch K1, normally closed switch K2 and bidirectional transient voltage suppressor DZ, wherein:
One end of resistance R is connected the link of an end after connecting as the positive terminals DC+ of power supply with normal open switch K1; The other end of resistance R connects the anode of diode D, and connects the end of bidirectional transient voltage suppressor DZ; The negative electrode of diode D connects the other end of bidirectional transient voltage suppressor DZ, and connects the end of normally closed switch K2; The other end of normally closed switch K2 connects the other end of normal open switch K1, and connects an end that is powered object; Be powered the other end of object as power-terminals DC-.
Wherein, the puncture voltage of bidirectional transient voltage suppressor DZ should be greater than the operating voltage of this soft starting circuit, less than predeterminated voltage, so that bidirectional transient voltage suppressor DZ not conducting when bearing the reverse voltage of operating voltage, and conducting when bearing reverse surge voltage.Concrete condition when predeterminated voltage can be according to practical application is set.
Better, can choose puncture voltage and be slightly larger than the bidirectional transient voltage suppressor of the operating voltage of this soft starting circuit.
Bidirectional transient voltage suppressor DZ can be a device, also can be the unidirectional Transient Voltage Suppressor of two anti-series.
The soft starting circuit that provides in order to further illustrate the utility model embodiment 1, below its operation principle is set forth:
In soft start-up process, when this soft starting circuit input service voltage, bidirectional transient voltage suppressor DZ turn-offs, when this soft starting circuit input forward surge voltage, bidirectional transient voltage suppressor DZ conducting, but diode D conducting always in two kinds of situations makes circuit be in channel status always, and the forward surge voltage can access and release;
When the reverse voltage of this soft starting circuit input service voltage, diode D turn-offs, and bidirectional transient voltage suppressor DZ turn-offs, and circuit is in open-circuit condition;
When this soft starting circuit input reverse surge voltage, diode D turn-offs, but bidirectional transient voltage suppressor DZ can conducting within the extremely short time, surge voltage can be accessed release, and bidirectional transient voltage suppressor DZ can clamp voltage.
As seen, the soft starting circuit that adopts the utility model embodiment 1 to provide, when this soft starting circuit input reverse surge voltage, can reduce the reverse voltage that bear at the diode two ends, avoids circuit devcie damaged, improves the reliability of circuit.
Embodiment 2:
The utility model embodiment 2 provides a kind of soft starting circuit, as shown in Figure 4, comprises resistance R, diode D, normal open switch K1, normally closed switch K2 and capacitor C, wherein:
One end of resistance R is connected the link of an end after connecting as the positive terminals DC+ of power supply with normal open switch K1; The other end of resistance R connects the anode of diode D, and connects an end of capacitor C; The negative electrode of diode D connects the other end of capacitor C, and connects the end of normally closed switch K2; The other end of normally closed switch K2 connects the other end of normal open switch K1, and connects an end that is powered object; Be powered the other end of object as power-terminals DC-.
The soft starting circuit that provides in order to further illustrate the utility model embodiment 2, below its operation principle is set forth:
In soft start-up process, when this soft starting circuit input service voltage or forward surge voltage, diode D conducting always makes circuit be in channel status always, and the forward surge voltage can access and release;
When the reverse voltage of this soft starting circuit input service voltage, diode D turn-offs, and capacitor C presents impedance for infinitely great, and circuit is in open-circuit condition;
When this soft starting circuit input reverse surge voltage, diode D turn-offs, but capacitor C presents Low ESR, surge voltage can be accessed release, and capacitor C can absorb a part of voltage.
As seen, the soft starting circuit that adopts the utility model embodiment 2 to provide, can the protective circuit device, improves the reliability of circuit.
The soft starting circuit that above-described embodiment provides is that the Anti-surging device is parallel to diode two ends to be protected; based on same design; the utility model embodiment also provides a kind of soft starting circuit; can and be powered object to diode together protects; the Anti-surging device is parallel to diode and the two ends that are powered object; as shown in Figure 5, comprise resistance R, diode D, K switch 1 and Anti-surging device, wherein:
Link after the end that one end of resistance R is connected with K switch connects is as terminals of power supply; The other end of resistance R connects the end of diode D, and connects an end of Anti-surging device; The other end of the other end connecting valve K1 of diode D, and connect an end that is powered object; Link after this other end that is powered the other end of object and this Anti-surging device connects is as another terminals of power supply; The impedance of this Anti-surging device when the reverse voltage of the operating voltage of bearing the operating voltage of this soft starting circuit, this soft starting circuit is for infinitely great, and the impedance when bearing reverse surge voltage is less than default impedance.
Concrete condition when wherein, default impedance can be according to practical application is set.
Further, this Anti-surging device is specifically as follows bidirectional transient voltage suppressor, also can be electric capacity.
, below in conjunction with accompanying drawing, with specific embodiment, above-mentioned soft starting circuit is described in detail.
Embodiment 3:
The utility model embodiment 3 provides a kind of soft starting circuit, as shown in Figure 6, comprises resistance R, diode D, normal open switch K1, normally closed switch K2 and bidirectional transient voltage suppressor DZ, wherein:
One end of resistance R is connected the link of an end after connecting as the positive terminals DC+ of power supply with normal open switch K1; The other end of resistance R connects the anode of diode D, and connects the end of bidirectional transient voltage suppressor DZ; The negative electrode of diode D connects the end of normally closed switch K2; The other end of normally closed switch K2 connects the other end of normal open switch K1, and connects an end that is powered object; The other end that is powered object is connected the link of the other end after connecting with bidirectional transient voltage suppressor DZ, as power-terminals DC-.
Wherein, the puncture voltage of bidirectional transient voltage suppressor DZ should be greater than the operating voltage of this soft starting circuit, less than predeterminated voltage, so that bidirectional transient voltage suppressor DZ not conducting when bearing operating voltage, and conducting when bearing surge voltage.Concrete condition when predeterminated voltage can be according to practical application is set.
Better, can choose puncture voltage and be slightly larger than the bidirectional transient voltage suppressor of the operating voltage of this soft starting circuit.
Bidirectional transient voltage suppressor DZ can be a device, also can be the unidirectional Transient Voltage Suppressor of two anti-series.
The soft starting circuit that provides in order to further illustrate the utility model embodiment 3, below its operation principle is set forth:
In soft start-up process, when this soft starting circuit input service voltage, bidirectional transient voltage suppressor DZ turn-offs, when this soft starting circuit input forward surge voltage, bidirectional transient voltage suppressor DZ conducting, but diode D conducting always in two kinds of situations makes circuit be in channel status always, and the forward surge voltage can access and release;
When the reverse voltage of this soft starting circuit input service voltage, diode D turn-offs, and bidirectional transient voltage suppressor DZ turn-offs, and circuit is in open-circuit condition;
When this soft starting circuit input reverse surge voltage, diode D turn-offs, but bidirectional transient voltage suppressor DZ can conducting within the extremely short time, surge voltage can be accessed release, and bidirectional transient voltage suppressor DZ can clamp voltage.
As seen, the soft starting circuit that adopts the utility model embodiment 3 to provide, can avoid diode damaged, and also can protect and be powered object simultaneously, improves the reliability of circuit.
Embodiment 4:
The utility model embodiment 4 provides a kind of dc transformating power, comprises the arbitrary soft starting circuit of above-mentioned Fig. 2-Fig. 6.
Power circuit in dc transformating power is the object that is powered in above-mentioned soft starting circuit.
In sum, the soft starting circuit that the utility model embodiment provides, comprise resistance, diode, switch and Anti-surging device, and wherein: this resistance and the series connection of this diode are a branch road; This switch and this branch circuit parallel connection, the end after parallel connection connects an end that is powered object, and the other end is as terminals of power supply; This is powered the other end of object another terminals as this power supply; This Anti-surging device and this diodes in parallel, the impedance of this Anti-surging device when the reverse voltage of the operating voltage of bearing this soft starting circuit is for infinitely great, and the impedance when bearing reverse surge voltage is less than default impedance.The soft starting circuit that adopts the utility model embodiment to provide, can improve circuit reliability.
Obviously, those skilled in the art can carry out various changes and modification and not break away from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model also is intended to comprise these changes and modification interior.
Claims (7)
1. a soft starting circuit, is characterized in that, comprises resistance, diode, switch and Anti-surging device, wherein:
Described resistance and the series connection of described diode are a branch road;
Described switch and described branch circuit parallel connection, the end after parallel connection connects an end that is powered object, and the other end is as terminals of power supply;
The described other end of object another terminals as described power supply that are powered;
Described Anti-surging device and described diodes in parallel, the impedance of described Anti-surging device when the reverse voltage of the operating voltage of bearing described soft starting circuit is for infinitely great, and the impedance when bearing reverse surge voltage is less than default impedance.
2. soft starting circuit as claimed in claim 1, is characterized in that, described Anti-surging device is specially Transient Voltage Suppressor.
3. soft starting circuit as claimed in claim 1, is characterized in that, described Anti-surging device is specially electric capacity.
4. a soft starting circuit, is characterized in that, comprises resistance, diode, switch and Anti-surging device, wherein:
One end of described resistance be connected the terminals of an end of the switch link after connecting as power supply;
The other end of described resistance connects an end of described diode, and connects an end of described Anti-surging device;
The other end of described diode connects the other end of described switch, and connects an end that is powered object;
The described other end that is powered object be connected the other end of the Anti-surging device link after connecting another terminals as described power supply;
The impedance of described Anti-surging device when the reverse voltage of the operating voltage of bearing the operating voltage of described soft starting circuit, described soft starting circuit is for infinitely great, and the impedance when bearing reverse surge voltage is less than default impedance.
5. soft starting circuit as claimed in claim 4, is characterized in that, described Anti-surging device is specially bidirectional transient voltage suppressor.
6. soft starting circuit as claimed in claim 4, is characterized in that, described Anti-surging device is specially electric capacity.
7. a dc transformating power, is characterized in that, comprises described soft starting circuit as arbitrary in claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203265486U CN203289316U (en) | 2013-06-06 | 2013-06-06 | Soft start circuit and DC conversion power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203265486U CN203289316U (en) | 2013-06-06 | 2013-06-06 | Soft start circuit and DC conversion power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203289316U true CN203289316U (en) | 2013-11-13 |
Family
ID=49545658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203265486U Expired - Lifetime CN203289316U (en) | 2013-06-06 | 2013-06-06 | Soft start circuit and DC conversion power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203289316U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088535A (en) * | 2017-06-14 | 2018-12-25 | 上海明石光电科技有限公司 | A kind of Switching Power Supply and its soft starting circuit |
-
2013
- 2013-06-06 CN CN2013203265486U patent/CN203289316U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088535A (en) * | 2017-06-14 | 2018-12-25 | 上海明石光电科技有限公司 | A kind of Switching Power Supply and its soft starting circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109327011A (en) | Overvoltage protection device | |
| CN201383666Y (en) | USB interface protection circuit | |
| CN103855765A (en) | Battery management system protecting device preventing over-voltage impact | |
| CN103024973A (en) | LED (Light-Emitting Diode) lamp and overcurrent protection circuit thereof | |
| CN203326653U (en) | Solar energy storage battery charging circuit | |
| CN203289316U (en) | Soft start circuit and DC conversion power source | |
| CN202111614U (en) | Trigger circuit used for thyristor and fast bypass apparatus | |
| CN201466716U (en) | Surge protection circuit | |
| CN203942276U (en) | A kind of lightning protection circuit | |
| CN203352131U (en) | Port with over-current protection and surge prevention functions | |
| CN204333949U (en) | A kind of protection against lightning surge circuit for navigation mark equipment | |
| CN202798115U (en) | Automatic switching control circuit of alternating current power supply and direct current battery backup power supply | |
| CN203250666U (en) | Arc-extinguishing apparatus of direct-current mechanical switch | |
| CN103325592A (en) | Arc-control device and arc-control method of direct-current mechanical switch | |
| CN203691022U (en) | Overvoltage impact preventing battery management system protection device | |
| CN207896869U (en) | A kind of high-power power transformation converter plant | |
| CN103414165A (en) | Storage battery discharge protection device | |
| CN105098705B (en) | A kind of earth leakage protective device | |
| CN104411051A (en) | LED drive output end capacitor protecting circuit | |
| CN104682339A (en) | Overvoltage protection circuit | |
| CN202495749U (en) | Power source protection circuit | |
| CN201766506U (en) | Communication power supply with input overvoltage/undervoltage protection | |
| CN206640308U (en) | A kind of Vehicular power protective circuit | |
| CN203406602U (en) | Storage battery discharge protecting apparatus | |
| CN203504139U (en) | Overvoltage protection device of water-turbine generator set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 1510, Kansas Avenue, lureen, Ohio, USA Patentee after: VERTIV ENERGY SYSTEMS, Inc. Address before: The United States of Ohio city F Lorain Street No. 1122 Patentee before: EMERSON NETWORK POWER, ENERGY SYSTEMS, NORTH AMERICA, Inc. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201014 Address after: Ohio, USA Patentee after: Dimension Corp. Address before: 1510 Kansas Avenue, Loren, Ohio, USA Patentee before: VERTIV ENERGY SYSTEMS, Inc. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |