CN201601614U - Power type switching power supply - Google Patents
Power type switching power supply Download PDFInfo
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- CN201601614U CN201601614U CN2009202994270U CN200920299427U CN201601614U CN 201601614 U CN201601614 U CN 201601614U CN 2009202994270 U CN2009202994270 U CN 2009202994270U CN 200920299427 U CN200920299427 U CN 200920299427U CN 201601614 U CN201601614 U CN 201601614U
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Abstract
The utility model relates to a power type switching power supply for supplying power to industrial production automatic control equipment. The switching power supply comprises a power supply filtering and overcurrent protection circuit, a single-phase bridge rectifier filtering circuit, a DC/DC power supply module circuit and a no-voltage protection freewheeling circuit, wherein the filtering and overcurrent protection circuit provides a power-frequency voltage with higher harmonic wave filtered off to the single-phase bridge rectifier filtering circuit, and the single-phase bridge rectifier filtering circuit outputs a smooth direct current to the DC/DC power supply module circuit. Because the DC/DC power supply module circuit can improve voltage precision and stability and has high load regulation rate, the power type switching power supply has ideal power output. Because of the no-voltage protection freewheeling circuit, when the switching power supply has voltage loss, the damage of the switching power supply due to overhigh induction voltage is avoided. The power type switching power supply has the advantages of reasonable structure, high output voltage and current quality, good safety and stability and high reliability, and can be used for industrial process control.
Description
Technical field:
The utility model belongs to the power switch field of power supplies, relates to a kind of power-type Switching Power Supply for the power supply of industrial production automatic control equipment.
Background technology:
The Switching Power Supply that is used in industrial process control system at present is a lot, though some are manufactured producer and have adopted new technology aspect high power switching power supply, but consider the factor of power, selecting for use of components and parts still is that separate piece is too much, so just make the Switching Power Supply overall structure be difficult to embody the advantage of new technology, being operated under the high-power state its stability, reliability is difficult to guarantee, the failure rate height, particularly concerning automaticity than the higher industrial equipment, such Switching Power Supply obviously is difficult to adapt to the demand of equipment.
The utility model content:
The utility model provides a kind of circuit structure reasonable, output voltage, electric current quality height, safety and stability, the power-type Switching Power Supply that reliability is high.
The purpose of this utility model is achieved by following technical proposals.The power-type Switching Power Supply is by power filter, current foldback circuit 1; single-phase bridge rectification filter circuit 2; DC/DC power module circuitry 3; o-volt protection freewheeling circuit 4 constitutes; the output order phase bridge rectifier filter circuit 2 of power filter, current foldback circuit 1; DC/DC power module circuitry 3 is sent in the output of single-phase bridge rectification filter circuit 2, and the output of DC/DC power module circuitry 3 is through 4 outputs of o-volt protection freewheeling circuit.
Described power filter, current foldback circuit 1 are made up of Electromagnetic interference filter FIL, the first cartridge fuse F1, current suppressor RT, power supply indication LED 1 and first resistance R 1; the first cartridge fuse F1 is connected to Electromagnetic interference filter FIL input; be connected to current suppressor RT on the output of Electromagnetic interference filter FIL; power supply indication LED 1 and 1 series connection of first resistance R; the positive pole of power supply indication LED 1 meets current suppressor RT, another output of another termination Electromagnetic interference filter FIL of first resistance R 1.
Single-phase bridge rectification filter circuit 2 is made up of bridge rectifier RBI, first to fourth capacitor C 1-C4 and the second cartridge fuse F2, first, second capacitor C 1, C2 are serially connected between the positive and negative electrode of bridge rectifier RBI output, the 3rd capacitor C 3 is connected between the positive pole and ground of bridge rectifier RBI output, the 4th capacitor C 4 is connected between the negative pole and ground of bridge rectifier RBI output, and the second cartridge fuse F2 is connected on the positive pole of bridge rectifier RBI output.
Described DC/DC power module circuitry 3 is by the DC/DC power module, potentiometer RW1, second resistance R 2, the the 5th to the 8th capacitor C 5-C8 and inductance L 1 are formed, the DC/DC power module is imported the anode of 1 pin order phase bridge rectifier filter circuit output dc voltage, import the negative terminal of 4 pin order phase bridge rectifier filter circuit output dc voltages, DC/DC power module outlet 5,6 pin connect, negative terminal for the output direct-current working volts, DC/DC power module outlet 8,9 pin connect, anode for the output direct-current working volts, potentiometer RW1,2 series connections of second resistance R are between the anode and negative terminal of DC/DC power module output direct-current working volts, DC/DC power module outlet 7 pin are output voltage adjustment end, be connected to the end adjusted of potentiometer RW1, the 7th capacitor C 7 is connected between the anode and negative terminal of DC/DC power module output direct-current working volts, the 5th capacitor C 5 and the 6th capacitor C 6 of connecting, the 8th capacitor C 8 also is connected between the anode and ground of DC/DC power module output dc voltage, the anode of inductance L 1 one termination DC/DC power module output dc voltages, the other end are the positive pole of Switching Power Supply output.
Described o-volt protection freewheeling circuit 4 is made up of output indication LED 2, the 3rd resistance R 3, relay J 1 and diode D1; output indication LED 2 and 3 series connections of the 3rd resistance R are between Switching Power Supply output cathode V+, the negative pole V-; relay J 1 is connected to Switching Power Supply output positive and negative electrode two ends, and diode D1 positive pole connects the output cathode that Switching Power Supply output negative pole, its negative pole connect Switching Power Supply.
The power-type Switching Power Supply operation principle that the utility model provides is as follows: the filtering current foldback circuit of forming by power-supply filter 1 filtering is provided the power-frequency voltage of high order harmonic component through single-phase bridge rectification filter circuit 2; export a level and smooth direct current and supply with DC/DC power module circuitry 3; because itself technical characteristic of DC/DC power module circuitry 3 is to voltage accuracy; voltage stability just has the effect of lifting; also have higher to load regulation in addition; the quality of output voltage; characteristics such as efficient height; this just makes us obtain one group of comparatively ideal power output; again because the setting of o-volt protection freewheeling circuit 4; when Switching Power Supply is turn-offed decompression, avoided damaging Switching Power Supply because of induced voltage is too high.The utility model provides a kind of rational in infrastructure, output voltage, electric current quality height, safety and stability, power-type Switching Power Supply that reliability is high for industrial process control.The concrete technical characterstic of the utility model shows: one, circuit structure is simple, and two, use components and parts less, three, can realize stable more high-power output, actual test power output can reach 400VA.
Description of drawings:
Fig. 1 provides the electronic circuit schematic diagram of an embodiment of power-type Switching Power Supply for the utility model.1, power-supply filter, current foldback circuit; 2, single-phase bridge rectification filter circuit; 3, DC/DC power module circuitry; 4, o-volt protection freewheeling circuit.
Embodiment:
Further specify enforcement of the present utility model below in conjunction with accompanying drawing.Referring to Fig. 1, by power filter, current foldback circuit 1, single-phase bridge rectification filter circuit 2, DC/DC power module circuitry 3, o-volt protection freewheeling circuit 4 constitutes the utility model device.Wherein, power filter and current foldback circuit 1 are made up of Electromagnetic interference filter FIL, the first cartridge fuse F1, current suppressor RT, power supply indication LED 1 and first resistor R 1, are used to control the electromagnetic interference and the overcurrent protection of input voltage.The first cartridge fuse F1 is connected to Electromagnetic interference filter FIL input, is used for overload protection, and after the common mode that Electromagnetic interference filter FIL produces input circuit, the high decay of string mould electromagnetic interference, RBI provides input voltage to bridge rectifier.Be connected to current suppressor RT between Electromagnetic interference filter FIL and the bridge rectifier RBI, the restriction impulse current is to the harmful effect of bridge rectifier RBI, and the power supply indication LED 1 and first resistance R 1 are formed power indicating circuit.Single-phase bridge rectification filter circuit 2 is made up of bridge rectifier RBI, first to fourth capacitor C 1-C4 and the second cartridge fuse F2, first, second capacitor C 1, C2 are serially connected between the positive and negative electrode of bridge rectifier RBI output, the 3rd capacitor C 3 is connected between the positive pole and ground of bridge rectifier RBI output, the 4th capacitor C 4 is connected between the negative pole and ground of bridge rectifier RBI output, and the second cartridge fuse F2 is connected on the positive pole of bridge rectifier RBI output.The single-phase bridge rectification filter circuit is used for the rectification and the filtering of power supply.Behind the ac voltage rectifier of bridge rectifier RBI to input, the circuit of being made up of capacitor C 1-capacitor C 4 carries out filtering, and the direct current of an about 300V is provided, and supplies with DC/DC power module circuitry 3 inputs through the second cartridge fuse F2.DC/DC power module circuitry 3 is by the DC/DC power module; potentiometer RW1; second resistance R 2; the 5th-Di eight capacitor C 5-C8 and inductance L 1 are formed; DC/DC power module input 1 pin connects the anode of input direct voltage; 4 pin connect the negative terminal of input direct voltage; 2; 3 pin are vacant; DC/DC power module outlet 5; 6 pin connect; it is output as the negative terminal of direct-current working volts; DC/DC power module outlet 8; 9 pin connect; it is output as the anode of direct-current working volts; DC/DC power module outlet 7 pin are output voltage adjustment end; be connected to the end adjusted of potentiometer RW1; the other two ends of potentiometer RW1 are connected respectively to DC/DC power module outlet 8; one end of 9 pin and second resistance R 2; the other end of second resistance R 2 is connected to DC/DC power module outlet 5; 6 pin; the 7th capacitor C 7 is connected between the anode and negative terminal of DC/DC power module output direct-current working volts; the 5th capacitor C 5 and the 6th capacitor C 6 of connecting; the 8th capacitor C 8 also is connected between the anode and ground of DC/DC power module output dc voltage; inductance L 1 one is connected to the output 8 of DC/DC power module; 9 pin; the other end is connected to the o-volt protection freewheeling circuit; be power-type Switching Power Supply output cathode V+; its operation principle is the dc high voltage that the single-phase bridge rectification filter circuit inputs to the DC/DC power module; through conversion of DC/DC power module and capacitor C 5; C6; C7; the filter shape of capacitor C 8 and potentiometer RW1; the circuit that second resistance R 2 is formed carries out voltage trim; just obtain the dc output power of one group of low-voltage and high-current, behind denoising inductance L 1 filtering high-frequency harmonic, delivered to the o-volt protection freewheeling circuit again.O-volt protection freewheeling circuit 4 is by output indication LED 2; the 3rd resistance R 3; relay J 1 and diode D1 form; output indication LED 2 positive poles are connected to Switching Power Supply output cathode V+; negative pole be connected to Switching Power Supply output negative pole V-after the 3rd resistance R 3 is connected; constitute Switching Power Supply output indicating circuit; relay J 1 coil just is being connected to Switching Power Supply output; the negative pole two ends; diode D1 positive pole connects the Switching Power Supply output negative pole; its negative pole connects the output cathode of Switching Power Supply; relay J 1 and diode D1 form the o-volt protection freewheeling circuit; when Switching Power Supply is turn-offed decompression; freewheeling circuit just can discharge in relay J 1 coil and hold poly-energy, prevents the too high damage Switching Power Supply of induced voltage.
Claims (5)
1. power-type Switching Power Supply; it is characterized in that constituting by power filter and current foldback circuit (1), single-phase bridge rectification filter circuit (2), DC/DC power module circuitry (3), o-volt protection freewheeling circuit (4); the output order of power filter and current foldback circuit (1) is bridge rectifier filter circuit (2) mutually; DC/DC power module circuitry (3) is sent in the output of single-phase bridge rectification filter circuit (2), and the output of DC/DC power module circuitry (3) is exported through o-volt protection freewheeling circuit (4).
2. power-type Switching Power Supply according to claim 1; it is characterized in that described power filter and current foldback circuit (1) are by Electromagnetic interference filter (FIL); first cartridge fuse (F1); current suppressor (RT); power supply indication light-emitting diode (LED1) and first resistance (R1) are formed; first cartridge fuse (F1) is connected to Electromagnetic interference filter (FIL) input; be connected to current suppressor (RT) on one output of Electromagnetic interference filter (FIL); power supply indication light-emitting diode (LED1) and first resistance (R1) series connection; the positive pole of power supply indication light-emitting diode (LED1) connects current suppressor (RT), another output of another termination Electromagnetic interference filter (FIL) of first resistance (R1).
3. power-type Switching Power Supply according to claim 1, it is characterized in that described single-phase bridge rectification filter circuit (2) is by bridge rectifier (RBI), first to fourth electric capacity (C1-C4) and second cartridge fuse (F2) are formed, first, second electric capacity (the C1, C2) just be serially connected in bridge rectifier (RBI) output, between the negative pole, the 3rd electric capacity (C3) is connected between the positive pole and ground of bridge rectifier (RBI) output, the 4th electric capacity (C4) is connected between the negative pole and ground of bridge rectifier (RBI) output, and second cartridge fuse (F2) is connected on the positive pole of bridge rectifier (RBI) output.
4. power-type Switching Power Supply according to claim 1, it is characterized in that described DC/DC power module circuitry (3) is by the DC/DC power module, potentiometer (RW1), second resistance (R2), the the 5th to the 8th electric capacity (C5-C8) and inductance (L1) are formed, the DC/DC power module is imported the anode of 1 pin order phase bridge rectifier filter circuit output dc voltage, import the negative terminal of 4 pin order phase bridge rectifier filter circuit output dc voltages, DC/DC power module outlet 5,6 pin connect, negative terminal for the output direct-current working volts, DC/DC power module outlet 8,9 pin connect, anode for the output direct-current working volts, potentiometer (RW1), second resistance (R2) series connection is between the anode and negative terminal of DC/DC power module output direct-current working volts, DC/DC power module outlet 7 pin are output voltage adjustment end, be connected to the end adjusted of potentiometer (RW1), the 7th electric capacity (C7) is connected between the anode and negative terminal of DC/DC power module output direct-current working volts, the 5th electric capacity (C5) and the 6th electric capacity (C6) of connecting, the 8th electric capacity (C8) also is connected between the anode and ground of DC/DC power module output dc voltage, the anode of inductance (L1) termination DC/DC power module output dc voltage, the other end are the positive pole of Switching Power Supply output.
5. power-type Switching Power Supply according to claim 1; it is characterized in that described o-volt protection freewheeling circuit (4) is made up of output indication light-emitting diode (LED2), the 3rd resistance (R3), relay (J1) and diode (D1); output indication LED 2 and the 3rd resistance (R3) series connection are between Switching Power Supply output cathode V+, the negative pole V-; relay (J1) coil is connected to Switching Power Supply output positive and negative electrode two ends, and diode (D1) positive pole connects the output cathode that Switching Power Supply output negative pole, its negative pole connect Switching Power Supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202994270U CN201601614U (en) | 2009-12-18 | 2009-12-18 | Power type switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202994270U CN201601614U (en) | 2009-12-18 | 2009-12-18 | Power type switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201601614U true CN201601614U (en) | 2010-10-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202994270U Expired - Fee Related CN201601614U (en) | 2009-12-18 | 2009-12-18 | Power type switching power supply |
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| Country | Link |
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| CN (1) | CN201601614U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993724A (en) * | 2015-06-01 | 2015-10-21 | 王天甜 | Low-voltage large-current synchronous rectification power source |
| CN108712066A (en) * | 2018-07-17 | 2018-10-26 | 尼力德（宝鸡）起重机有限公司 | A kind of crane brake power circuit |
-
2009
- 2009-12-18 CN CN2009202994270U patent/CN201601614U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993724A (en) * | 2015-06-01 | 2015-10-21 | 王天甜 | Low-voltage large-current synchronous rectification power source |
| CN108712066A (en) * | 2018-07-17 | 2018-10-26 | 尼力德（宝鸡）起重机有限公司 | A kind of crane brake power circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Power type switching power supply Effective date of registration: 20110705 Granted publication date: 20101006 Pledgee: Bengbu SME credit Company limited by guarantee Pledgor: Anhui Keda Automation Group Co., Ltd. Registration number: 2011990000257 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20120607 Granted publication date: 20101006 Pledgee: Bengbu SME credit Company limited by guarantee Pledgor: Anhui Keda Automation Group Co., Ltd. Registration number: 2011990000257 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Power type switching power supply Effective date of registration: 20120607 Granted publication date: 20101006 Pledgee: Bengbu SME finance Company limited by guarantee Pledgor: Anhui Keda Automation Group Co., Ltd. Registration number: 2012990000275 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20151214 Granted publication date: 20101006 Pledgee: Bengbu financing guarantee Group Co., Ltd. Pledgor: Anhui Keda Automation Group Co., Ltd. Registration number: 2012990000275 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PM01 | Change of the registration of the contract for pledge of patent right |
Change date: 20151214 Registration number: 2012990000275 Pledgee after: Bengbu financing guarantee Group Co., Ltd. Pledgee before: Bengbu SME finance Company limited by guarantee |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20141218 |
|
| EXPY | Termination of patent right or utility model |