CN203504393U - Energy saving and consumption reduction device for linear power supply - Google Patents
Energy saving and consumption reduction device for linear power supply Download PDFInfo
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- CN203504393U CN203504393U CN201320627006.2U CN201320627006U CN203504393U CN 203504393 U CN203504393 U CN 203504393U CN 201320627006 U CN201320627006 U CN 201320627006U CN 203504393 U CN203504393 U CN 203504393U
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- power supply
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- consumption reduction
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Abstract
The utility model discloses an energy saving and consumption reduction device for a linear power supply. The linear power supply comprises a switching power supply, a linear voltage reduction circuit, a voltage reduction-type conversion circuit connected between the switching power supply and the linear voltage reduction circuit and an output circuit. The energy saving and consumption reduction device comprises a set output voltage circuit and a comparison circuit connected with the set output voltage circuit and the output circuit; and the comparison circuit is connected with the voltage reduction-type conversion circuit. Through the above mode, heat loss of the linear power supply, particularly the heat loss of the linear voltage reduction circuit is obviously reduced, and true energy saving and environmental protection can be achieved.
Description
Technical field
The utility model relates to linear power supply field, particularly relates to a kind of energy-conservation of consumption reduction device of linear power supply.
Background technology
In linear field of power supplies, using at present more is linear power supply structure as shown in Figure 1, described Switching Power Supply inputs to buck varying circuit by a higher voltage, again after linear reduction voltage circuit step-down, by output circuit, export lower voltage, its advantage is exactly weight, the simplification circuit structure that can dwindle the volume of linear power supply, alleviate linear power supply, realize the interchange input of wide region, compare with traditional linear power supply, do not need to switch multistage output before inputing to linear voltage decreasing circuit.But the linear power supply structure shown in Fig. 1, when output transfers constant current state to from pressure constant state, if output circuit short circuit, the voltage obtaining from Buck conversion circuit does not reduce, the voltage having more so just needs the decompression tube of linear voltage decreasing circuit to absorb, form with heating consumes unnecessary power, so the fin volume of linear power supply and radiating mode are just had to high requirement, increase thermal noise indirectly to whole linear power supply, also the Miniaturization Design that is unfavorable for linear power supply, is also unfavorable for energy-saving and emission-reduction simultaneously.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of energy-conservation of consumption reduction device of linear power supply, can obviously reduce the thermal losses of linear power supply.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: the energy-conservation of consumption reduction device that a kind of linear power supply is provided, described linear power supply comprises Switching Power Supply, linear voltage decreasing circuit, is connected to Buck conversion circuit, output circuit between described Switching Power Supply and described linear voltage decreasing circuit, described energy-conservation of consumption reduction device comprises the comparison circuit of setting output voltage circuit, being connected with described setting output voltage circuit and described output circuit, and described comparison circuit is connected with described Buck conversion circuit.
Preferably, described linear power supply is operated in respectively pressure constant state and constant current state.
Preferably, under pressure constant state and constant current state, the energy-conservation of consumption reduction mode of described linear power supply is different.
The beneficial effects of the utility model are: the utility model, by increase a comparison circuit in linear power supply architecture, has obviously reduced the thermal losses of described linear power supply, and the especially thermal losses of linear voltage decreasing circuit, has really accomplished energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is the structural representation of linear power supply one prior art;
Fig. 2 is the structural representation of the energy-conservation of consumption reduction device of linear power supply described in the utility model;
Fig. 3 is the circuit theory diagrams of the utility model one preferred embodiment.
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.
Refer to Fig. 2, the utility model embodiment comprises:
A kind of energy-conservation of consumption reduction device of linear power supply, described linear power supply comprises Switching Power Supply, linear voltage decreasing circuit, is connected to Buck conversion circuit, output circuit between described Switching Power Supply and described linear voltage decreasing circuit, described energy-conservation of consumption reduction device comprises the comparison circuit of setting output voltage circuit, being connected with described setting output voltage circuit and described output circuit, and described comparison circuit is connected with described Buck conversion circuit.
Be different from prior art, described linear power supply also comprises an energy-conservation of consumption reduction device, by described setting output voltage circuit, set an output voltage values, and described setting output voltage values is inputed to described comparison circuit, now described output circuit also inputs to described comparison circuit by actual output voltage value, described actual output voltage and described setting output voltage values are subtracted each other and calculate difference, again difference is superimposed on to the output valve of removing to control described Buck conversion circuit after described setting output voltage values, make it under the constant current mode of described linear power supply, keep the value higher than described actual output voltage fixed voltage size always.When realizing, physical circuit should be noted that the processing of pressure constant state, the set point of controlling described Buck conversion circuit output during pressure constant state is described setting output voltage values, therefore,, under pressure constant state and constant current state, the energy-conservation of consumption reduction mode of described linear power supply is different.
In preferred embodiment of the present utility model, as shown in Figure 3, control through this circuit, no matter described linear power supply output is in pressure constant state or constant current state, the output voltage of described Buck conversion circuit all the time can be than the voltage of the less fixed size of actual output voltage value height, thus, described linear voltage decreasing circuit only need to consume less thermal losses.
When described linear power supply is during in pressure constant state, CC/CV signal controlling U203 sends to 0V to U202B and superposes, and is exactly in fact the output of setting the set point of output voltage values as described Buck conversion circuit and participate in described Buck conversion circuit is controlled.
When described linear power supply is during in constant current state, CC/CV signal controlling U203 sends to difference to U202B and superposes, and the output that allows setting output voltage values and the rear set point as described Buck conversion circuit of difference stack participate in described Buck conversion circuit is controlled.Difference be by U202A by actual output voltage value with set output voltage values do stack and do in proportion to amplify after value.
The utility model, by increase a comparison circuit in linear power supply architecture, has obviously reduced the thermal losses of described linear power supply, and the especially thermal losses of linear voltage decreasing circuit, has really accomplished energy-conserving and environment-protective.
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 (3)
1. the energy-conservation of consumption reduction device of a linear power supply, described linear power supply comprises Switching Power Supply, linear voltage decreasing circuit, is connected to Buck conversion circuit, output circuit between described Switching Power Supply and described linear voltage decreasing circuit, it is characterized in that, described energy-conservation of consumption reduction device comprises the comparison circuit of setting output voltage circuit, being connected with described setting output voltage circuit and described output circuit, and described comparison circuit is connected with described Buck conversion circuit.
2. the energy-conservation of consumption reduction device of linear power supply according to claim 1, is characterized in that, described linear power supply is operated in respectively pressure constant state and constant current state.
3. the energy-conservation of consumption reduction device of linear power supply according to claim 2, is characterized in that, under pressure constant state and constant current state, the energy-conservation of consumption reduction mode of described linear power supply is different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320627006.2U CN203504393U (en) | 2013-10-12 | 2013-10-12 | Energy saving and consumption reduction device for linear power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320627006.2U CN203504393U (en) | 2013-10-12 | 2013-10-12 | Energy saving and consumption reduction device for linear power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203504393U true CN203504393U (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320627006.2U Expired - Fee Related CN203504393U (en) | 2013-10-12 | 2013-10-12 | Energy saving and consumption reduction device for linear power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN203504393U (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
- 2013-10-12 CN CN201320627006.2U patent/CN203504393U/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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Legal Events
| Date | Code | Title | Description |
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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: 20140326 Termination date: 20161012 |