CN204334358U - A kind of interface power supply circuit being applicable to computer - Google Patents
A kind of interface power supply circuit being applicable to computer Download PDFInfo
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- CN204334358U CN204334358U CN201520032139.4U CN201520032139U CN204334358U CN 204334358 U CN204334358 U CN 204334358U CN 201520032139 U CN201520032139 U CN 201520032139U CN 204334358 U CN204334358 U CN 204334358U
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Abstract
The utility model provides a kind of interface power supply circuit being applicable to computer, comprise power port protection module, rectification module, filtration module, Voltage stabilizing module, power port protection module input connects DC power output end, output connects rectification module input, rectification module output connects filtration module input, filtration module output connects Voltage stabilizing module input, power port protection module comprises piezo-resistance, gas discharge tube, TVS pipe, Voltage stabilizing module adopts the exportable continuously adjustable positive voltage of the adjustable integrated regulator of three ends, the utility model structure is simple, safe and reliable, power port protection module adopts piezo-resistance, gas discharge tube carries out differential mode protection and common mode protection, play good anti-lightning strike effect.
Description
Technical field:
The utility model relates to a kind of power circuit, particularly relates to a kind of interface power supply circuit being applicable to computer.
Background technology:
At present, power circuit is widely used in nearly all electronic equipment such as various terminal equipments, communication equipment etc. that electronic computer takes as the leading factor with small-sized, light weight and high efficiency feature, is the indispensable a kind of power mode of current electronics and information industry develop rapidly.The 100KHZ adopting bipolar transistor to make in the Switching Power Supply of selling in the market, the 500KHZ power supply made with MOS-FET, though practical, its frequency needs to be improved further.Improve switching frequency, will switching loss be reduced, and switching loss will be reduced, just need speed-sensitive switch components and parts.But, after switching speed improves, surge or noise can be produced by the impact of stored charge in distributed inductance in circuit and electric capacity or diode.Like this, not only can affect ambient electronics, also greatly can reduce the reliability of power supply itself.Wherein, for preventing the voltage surge occurred with switch on-off, can R-C be adopted, or L-C buffer.But, to the high frequency of more than 1MHZ, resonant circuit be adopted, to make the voltage on switch or electric current be sinusoidal wave, so both can reduce switching loss, and also can control the generation of surge simultaneously.Traditional protection circuit design is when safety tested media is tested, the positive and negative level short circuit that 48V inputs is risen be used as a pole, GND is as an other pole, but exchange not by test at power port input 500V, reason is generally gas discharge tube meeting conducting, cause leakage current to become large, thus test not by.The mode removing gas discharge tube in most cases can be taked to be tested by safety, but new standard-required protection device can not be removed in test process.
Utility model content:
In order to solve the problem, the utility model provides high, the safe and reliable technical scheme of a kind of power-efficient:
A kind of interface power supply circuit being applicable to computer, comprise power port protection module, rectification module, filtration module, Voltage stabilizing module, power port protection module input connects DC power output end, output connects rectification module input, rectification module output connects filtration module input, and filtration module output connects Voltage stabilizing module input.
As preferably, power port protection module comprises piezo-resistance R2, piezo-resistance R3, piezo-resistance R4, gas discharge tube GDT, TVS pipe D6, between the positive pole that piezo-resistance R2 is serially connected in DC power supply mouth and negative pole, one end of piezo-resistance R3 is connected with the negative pole of DC power supply mouth, one end of piezo-resistance R4 is connected with the positive pole of DC power supply mouth, the other end of piezo-resistance R3 is connected with the other end of piezo-resistance R4, and by gas discharge tube GDT ground connection.
As preferably, filtration module comprises 3 groups of filter capacitors be connected in parallel, and filter capacitor is in parallel with the input of Voltage stabilizing module.
As preferably, rectification module comprises diode D2, diode D3, diode D4, diode D5, diode D2 series diode D3 forms one group of series network, and diode D4 series diode D5 forms one group of series network, and two kinds of series networks are also connected in both ends of power.
As preferably, Voltage stabilizing module adopts the adjustable integrated regulator of three-phase, and the adjustable integrated regulator one end of three-phase connects a variable resistor.
The beneficial effects of the utility model are:
(1) the utility model adopts the adjustable integrated regulator of three ends, exportable continuously adjustable positive voltage, and its voltage and current regulation is better than fixed integrated regulator.
(2) the utility model adopts power port protection module, carries out differential mode protection and common mode protection, has good anti-lightning strike effect, safe and reliable.
Accompanying drawing illustrates:
Fig. 1 is anatomical connectivity block diagram of the present utility model;
Fig. 2 is rectification module circuit diagram of the present utility model;
Fig. 3 is the utility model filtration module circuit diagram;
Fig. 4 is the utility model Voltage stabilizing module circuit diagram;
Fig. 5 is the utility model power port protection module circuit diagram.
Embodiment:
For making goal of the invention of the present utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, execution mode of the present utility model is described in further detail.
Plant the interface power supply circuit being applicable to computer as shown in Figure 1, comprise power port protection module 1, rectification module 2, filtration module 3, Voltage stabilizing module 4, power port protection module 1 input connects DC power output end U1, output connects rectification module 2 input, rectification module 2 output connects filtration module 3 input, and filtration module 3 output connects Voltage stabilizing module input 4.
As shown in Figure 2, rectification module 2 comprises diode A D2, diode B D3, diode C D4, diode D D5, diode A D2 series diode B D3 forms one group of series network, diode C D4 series diode D D5 forms one group of series network, and two kinds of series networks are also connected in both ends of power.The sinusoidal ac of 50HZ is converted to the direct current of pulsation.
As shown in Figure 3, comprise filter inductance L2, filter capacitor A C6, filter capacitor B C7, filter capacitor C C8, filter inductance L2 parallel connection access rectification module 2 output, filter inductance L2 parallel filtering electric capacity A C6, filter capacitor B C7, filter capacitor C C8, stable direct current signal is carried Voltage stabilizing module 4 by direct current signal after filtration module 3 filtering.Filtration module 3 by the filtering in addition of the alternating component major part in rectification module 2 output voltage, thus obtains smoother direct voltage.
Voltage stabilizing module 4 as shown in Figure 4, adopt the adjustable stabilized voltage device integrated LM317 of three-phase, bridge rectifier Q1, the adjustable stabilized voltage device integrated LM317 of three-phase (1) pin a1 connects the electric capacity A C1 be connected in parallel, electric capacity B C2, electric capacity C C3, the adjustable stabilized voltage device integrated LM317 of three-phase (2) pin a2 connects variable resistor RX, resistance A R0 parallel diode E D1 series capacitance D C4 again, variable resistor RX connects diode E D1 positive pole, electric capacity E C5, resistance B RL is connected in parallel on both ends of power, the adjustable stabilized voltage device integrated LM317 of three-phase (3) pin a3 accesses power output end positive pole, bridge rectifier Q1 accesses power input two ends, one end connects three-phase adjustable stabilized voltage device integrated LM317 (1) pin a1, one end ground connection.
As shown in Figure 5, power port protection module comprises piezo-resistance A R2, piezo-resistance B R3, piezo-resistance C R4, gas discharge tube GDT, TVS pipe D6, between the positive pole that piezo-resistance A R2 is serially connected in DC power supply mouth and negative pole, one end of piezo-resistance B R3 is connected with the negative pole of DC power supply mouth, one end of piezo-resistance C R4 is connected with the positive pole of DC power supply mouth, the other end of piezo-resistance B R3 is connected with the other end of piezo-resistance C R4, and by gas discharge tube GDT ground connection.Piezo-resistance A R2, piezo-resistance B R3, piezo-resistance C R4 and gas discharge tube GDT are lightning protection components; protect as the first order; wherein piezo-resistance A R2 forms differential mode protection; piezo-resistance B R3, piezo-resistance C R4 and gas discharge tube GDT form common mode protection; anti-lightning strike effect can be played, and next stage circuit below can be protected.After surge protected by the first order, also has certain residual voltage, next stage circuit is impacted, the second level is needed to protect, so the utility model is also serially connected with TVS pipe D6 between the positive pole and negative pole of DC power supply mouth, but due to TVS pipe D6 start-up time than piezo-resistance and gas discharge tube fast, and the protection energy of TVS pipe D6 is not high, being used alone TVS pipe D6 Anti-surging can cause TVS pipe D6 to damage, in order to avoid this situation occurs, the utility model is also serially connected with common mode inductance L1 on the positive pole and negative pole of DC power supply mouth, this common mode inductance L1 is between current and power supply mouth and TVS pipe D6, common mode inductance L1 (1) pin b1 accesses DC power supply mouth positive pole, common mode inductance L1 (2) pin b2 connects TVS pipe D6 one end, common mode inductance L1 (3) pin b3 connects the TVS pipe D6 other end, common mode inductance L1 (4) pin b4 accesses DC power supply mouth negative pole.
Above-described embodiment is preferred embodiment of the present utility model; it is not the restriction to technical solutions of the utility model; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (5)
1. one kind is applicable to the interface power supply circuit of computer, comprise power port protection module (1), rectification module (2), filtration module (3), Voltage stabilizing module (4), it is characterized in that: described power port protection module (1) input connects DC power output end, output connects described rectification module (2) input, described rectification module (2) output connects described filtration module (3) input, and described filtration module (3) output connects described Voltage stabilizing module (4) input.
2. a kind of interface power supply circuit being applicable to computer according to right 1, it is characterized in that: described power port protection module (1) comprises piezo-resistance A (R2), piezo-resistance B (R3), piezo-resistance C (R4), gas discharge tube (GDT), TVS pipe (D6), between the positive pole that described piezo-resistance A (R2) is serially connected in DC power supply mouth and negative pole, one end of described piezo-resistance B (R3) is connected with the negative pole of DC power supply mouth, one end of described piezo-resistance C (R4) is connected with the positive pole of DC power supply mouth, the other end of described piezo-resistance B (R3) is connected with the other end of described piezo-resistance C (R4), and by gas discharge tube (GDT) ground connection.
3. a kind of interface power supply circuit being applicable to computer according to right 1, it is characterized in that: described filtration module (3) comprises 3 groups of filter capacitors be connected in parallel, and described filter capacitor is in parallel with the input of described Voltage stabilizing module (4).
4. a kind of interface power supply circuit being applicable to computer according to right 1, it is characterized in that: described rectification module (2) comprises diode A (D2), diode B (D3), diode C (D4), diode D (D5), described diode A (D2) described diode B (D3) of connecting forms one group of series network, described diode C (D4) described diode D (D5) of connecting forms one group of series network, and two kinds of series networks are also connected in both ends of power.
5. a kind of interface power supply circuit being applicable to computer according to right 1, it is characterized in that: described Voltage stabilizing module (4) adopts the adjustable integrated regulator of three-phase (LM317), and the adjustable integrated regulator of described three-phase (LM317) one end connects a variable resistor (RX).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520032139.4U CN204334358U (en) | 2015-01-19 | 2015-01-19 | A kind of interface power supply circuit being applicable to computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520032139.4U CN204334358U (en) | 2015-01-19 | 2015-01-19 | A kind of interface power supply circuit being applicable to computer |
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| Publication Number | Publication Date |
|---|---|
| CN204334358U true CN204334358U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520032139.4U Expired - Fee Related CN204334358U (en) | 2015-01-19 | 2015-01-19 | A kind of interface power supply circuit being applicable to computer |
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| CN (1) | CN204334358U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947302A (en) * | 2017-12-31 | 2018-04-20 | 重庆海国科技有限公司 | A kind of power circuit of Portable oil filter |
| CN110794908A (en) * | 2019-10-10 | 2020-02-14 | 天津大学 | Voltage source for bias superconducting nanowire single-photon detector |
| CN114167787A (en) * | 2021-12-10 | 2022-03-11 | 江苏安科瑞电器制造有限公司 | Insulation monitoring system capable of generating fault positioning signal for medical IT system |
-
2015
- 2015-01-19 CN CN201520032139.4U patent/CN204334358U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947302A (en) * | 2017-12-31 | 2018-04-20 | 重庆海国科技有限公司 | A kind of power circuit of Portable oil filter |
| CN110794908A (en) * | 2019-10-10 | 2020-02-14 | 天津大学 | Voltage source for bias superconducting nanowire single-photon detector |
| CN114167787A (en) * | 2021-12-10 | 2022-03-11 | 江苏安科瑞电器制造有限公司 | Insulation monitoring system capable of generating fault positioning signal for medical IT system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20160119 |
|
| EXPY | Termination of patent right or utility model |