CN203482106U - Novel linear power supply circuit - Google Patents
Novel linear power supply circuit Download PDFInfo
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- CN203482106U CN203482106U CN201320600684.XU CN201320600684U CN203482106U CN 203482106 U CN203482106 U CN 203482106U CN 201320600684 U CN201320600684 U CN 201320600684U CN 203482106 U CN203482106 U CN 203482106U
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Abstract
The utility model discloses a novel linear power supply circuit which is applicable to a liner stabilized power supply and includes a switch power supply circuit, a BUCK voltage reduction circuit, a linear voltage reduction circuit, and an output circuit. The output end of the switch power supply circuit is connected with the input end of the BUCK voltage reduction circuit, the output end of the BUCK voltage reduction circuit is connected with the input end of the linear voltage reduction circuit, and the output end of the linear voltage reduction circuit is connected with the input end of the output circuit. According to the utility model, the switch power supply circuit and the BUCK voltage reduction circuit are adopted to replace a heavy transformer and rectification filter circuit. Accordingly, the weight and the size of the whole circuit can be reduced, and meanwhile, the use efficiency of the power supply can be improved. Therefore, the novel linear power supply circuit is energysaving and reduces consumption, and meets the requirements on green energy.
Description
Technical field
The utility model relates to linear power supply circuit field, particularly relates to a kind of novel linear power supply circuit being mainly useful in linear stabilized power supply.
Background technology
At present, traditional linear power supply circuit mostly as shown in Figure 1, comprise transformer, current rectifying and wave filtering circuit, linear voltage decreasing circuit and output circuit, alternating current reduces voltage magnitude through transformer isolation successively, through current rectifying and wave filtering circuit DC filtering, obtain direct voltage again, by obtaining the output of stabilized voltage power supply after linear voltage decreasing circuit and output circuit.
The defect of the linear power supply circuit of this kind of structure be the secondary output of transformer be fix or be divided into limited several voltage gears, when output voltage is set as in the situation of minimum output, the voltage bearing on linear voltage decreasing circuit can be very large, voltage on transformer has all been superimposed upon on linear voltage decreasing circuit, particularly when small voltage High-current output, linear voltage decreasing circuit will produce very large heat, so just need to take a lot of cooling measure (as the fin with larger or employing fan etc. dispels the heat), both wasted energy, expend again more, lose more than gain.Meanwhile, the volume and weight of transformer is large (when power output is several hectowatt hours) all, thereby brought great inconvenience for the carrying of linear power supply and storage.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of novel linear power supply circuit, by transformer being replaced with to switching power circuit in the linear power supply circuit traditional, setting up BUCK reduction voltage circuit, alleviated the weight of complete machine, and reduced the volume of complete machine, improved the service efficiency of power supply in circuit.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of novel linear power supply circuit is provided, comprise switching power circuit, BUCK reduction voltage circuit, linear voltage decreasing circuit and output circuit, the output of described switching power circuit is connected with the input of described BUCK reduction voltage circuit, the output of described BUCK reduction voltage circuit is connected with the input of described linear voltage decreasing circuit, and the output of described linear voltage decreasing circuit is connected with the input of described output circuit.
Preferably, described switching power circuit adopts isolation type switching power supply circuit.
Preferably, described BUCK reduction voltage circuit is DC/DC reduction voltage circuit.
Preferably, described linear voltage decreasing circuit comprises linear voltage decreasing pipe.
Preferably, the voltage of the input AC electricity of described switching power circuit is 100 ~ 240V, and frequency is 45 ~ 60Hz.
The beneficial effects of the utility model are: (1) adopts Switching Power Supply to carry out isolated buck to the alternating current of input, compare with transformer, without the input voltage that manually removes to select alternating current, can realize the voltage input of wide region, alleviate the weight of whole circuit, be convenient to carrying; (2) between switching power circuit and linear voltage decreasing circuit, set up BUCK reduction voltage circuit, reduced the power loss of linear voltage decreasing circuit, improved the heating problem of linear voltage decreasing circuit, thereby effectively extended the useful life of whole power circuit, energy savings, but also improved the power supply service efficiency of whole circuit; (3) circuit design simple, has reduced taking up room of circuit greatly, thereby has reduced the volume of whole circuit, is convenient to store.
Accompanying drawing explanation
Fig. 1 is the structural representation of traditional linear power supply circuit;
Fig. 2 is the structural representation of a kind of novel linear power supply circuit of the utility model.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that, protection range of the present utility model is made to more explicit defining.
The utility model has disclosed a kind of novel linear power supply circuit, mainly be useful in linear stabilized power supply, adopt switching power circuit and BUCK reduction voltage circuit to replace heavy transformer and current rectifying and wave filtering circuit, the weight and volume of complete machine is reduced, can also improve the service efficiency of power supply simultaneously, energy-saving and cost-reducing, meet the requirement of green energy resource.
Refer to shown in Fig. 2, the utility model embodiment comprises: switching power circuit, BUCK reduction voltage circuit, linear voltage decreasing circuit and output circuit, the output of described switching power circuit is connected with the input of described BUCK reduction voltage circuit, for the alternating current receiving is carried out to isolated buck, described switching power circuit has alleviated the weight of whole circuit, be convenient to circuit and carry, improved the service efficiency of power supply in circuit simultaneously.
In the present embodiment, described switching power circuit is preferably isolation type switching power supply circuit.The specified alternating voltage of the alternating current that described switching power circuit receives is 100 ~ 240V, has realized the input of the alternating voltage of wide region, and power is 45 ~ 60HZ.
The output of described BUCK reduction voltage circuit is connected with the input of described linear voltage decreasing circuit, for coordinating with described linear voltage decreasing circuit, the output voltage of described switching power circuit is carried out to step-down.According to the different power output of linear power supply circuit, select the BUCK reduction voltage circuit of corresponding power, described BUCK reduction voltage circuit is adjusted the output valve of himself automatically according to the set point of linear power supply circuit output voltage, as long as the voltage that the output valve of BUCK reduction voltage circuit exceeds a fixed size than the voltage output value of complete machine just can allow linear voltage decreasing circuit realize output up to specification.Described BUCK reduction voltage circuit has reduced the voltage bearing on linear voltage decreasing circuit, described linear voltage decreasing circuit caloric value is reduced, and then also correspondingly improved linear voltage decreasing circuit service efficiency.
In the present embodiment, described BUCK reduction voltage circuit is preferably DC/DC reduction voltage circuit, certainly according to actual needs, also can select other forms of reduction voltage circuit.
The output of described linear voltage decreasing circuit is connected with the input of described output circuit, comprises linear voltage decreasing pipe, for the output voltage after the step-down of BUCK reduction voltage circuit is further adjusted, thereby through the DC power supply of described output circuit stable output.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (5)
1. a novel linear power supply circuit, it is characterized in that, comprise switching power circuit, BUCK reduction voltage circuit, linear voltage decreasing circuit and output circuit, the output of described switching power circuit is connected with the input of described BUCK reduction voltage circuit, the output of described BUCK reduction voltage circuit is connected with the input of described linear voltage decreasing circuit, and the output of described linear voltage decreasing circuit is connected with the input of described output circuit.
2. novel linear power supply circuit according to claim 1, is characterized in that, described switching power circuit adopts isolation type switching power supply circuit.
3. novel linear power supply circuit according to claim 1, is characterized in that, described BUCK reduction voltage circuit is DC/DC reduction voltage circuit.
4. novel linear power supply circuit according to claim 1, is characterized in that, described linear voltage decreasing circuit comprises linear voltage decreasing pipe.
5. novel linear power supply circuit according to claim 1 and 2, is characterized in that, the voltage of the input AC electricity of described switching power circuit is 100 ~ 240V, and frequency is 45 ~ 60Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320600684.XU CN203482106U (en) | 2013-09-27 | 2013-09-27 | Novel linear power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320600684.XU CN203482106U (en) | 2013-09-27 | 2013-09-27 | Novel linear power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203482106U true CN203482106U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320600684.XU Expired - Fee Related CN203482106U (en) | 2013-09-27 | 2013-09-27 | Novel linear power supply circuit |
Country Status (1)
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| CN (1) | CN203482106U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226966A (en) * | 2015-10-13 | 2016-01-06 | 江苏绿扬电子仪器集团有限公司 | A kind of novel linear power source circuit |
-
2013
- 2013-09-27 CN CN201320600684.XU patent/CN203482106U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105226966A (en) * | 2015-10-13 | 2016-01-06 | 江苏绿扬电子仪器集团有限公司 | A kind of novel linear power source circuit |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20160927 |