CN205490087U - Multichannel constant voltage power supply - Google Patents
Multichannel constant voltage power supply Download PDFInfo
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- CN205490087U CN205490087U CN201520936567.XU CN201520936567U CN205490087U CN 205490087 U CN205490087 U CN 205490087U CN 201520936567 U CN201520936567 U CN 201520936567U CN 205490087 U CN205490087 U CN 205490087U
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Abstract
The utility model belongs to the technical field of mains voltage and a multichannel constant voltage power supply is disclosed, including input filter module, power conversion module, main transformer, PWM control module, isolation feedback module, sampling rate than module and reference voltage module, input filter module one side is equipped with the power conversion module, the power stripe is connected to power conversion module one end, power stripe one side is equipped with main transformer, main transformer one side is equipped with horizontal power stripe, horizontal power stripe one end connecting wire, voltage is connected to wire one end. The utility model discloses an input filter module, power conversion module, main transformer, PWM control module, isolation feedback module form the voltage control loop, and non inverting input holds then recently set for by the partial pressure of resistance. If output voltage rises, then the resistive voltage also rises, and this voltage and inverting terminal 2.5V reference voltage relatively flow in the LED in the opto -coupler, and then through the feedback control network control PWM output duty cycle of once inclining, makes output voltage work at the constant voltage state.
Description
Technical field
This utility model relates to a kind of supply unit, is specifically related to a kind of multichannel constant voltage source, belongs to supply voltage technical field.
Background technology
During electric charge flowing, the energy that electric charge is had discharges in circuit, and the element connected in circuit and circuit will absorb the energy of electric charge.Through energy absorption, electric charge releases energy and diminishes after itself contained energy, and people's electricity consumption drop of pressure weighs the capacity of water that electric charge releases energy in circuit.When electric current flows through circuit, by voltage landing certain for the every a bit of middle generation at circuit, it is used for the size of the electric energy representing that electric charge flows through this segment release (or this segment circuit absorbs).Voltage landing is called for short voltage.Voltage between 2 refers to work done when unit positive charge passes through under the effect of power supply at these 2.The unit electromotive force of voltage is equally volt.
Existing voltage is all that comparison is dull, and using when, effect is the most single, does not many times have the effect of constant voltage, and then result in a lot of troubles, so functionally needing certain change, create multichannel constant voltage source, it is ensured that the work efficiency of circuit.
Utility model content
The technical problems to be solved in the utility model overcomes existing defect, a kind of multichannel constant voltage source is provided, novel by input filter module, power conversion modules, main transformer, PWM control module, isolation feedback module composition voltage control loop, in-phase input end is then set by the intrinsic standoff ratio of resistance.If output voltage rises, then resistive voltage also rises, and this voltage compares with end of oppisite phase 2.5V reference voltage, flow into the LED in optocoupler, and then control primary side PWM output duty cycle by feedback control network, make output voltage be operated in pressure constant state, can effectively solve the problem in background technology.
In order to solve above-mentioned technical problem, this utility model provides following technical scheme:
This utility model provides a kind of multichannel constant voltage source, including input filter module, power conversion modules, main transformer, PWM control module, isolation feedback module, sampling comparison module and reference voltage module, described input filter module side is provided with power conversion modules, described power conversion modules one end connects power striped, described power striped side is provided with main transformer, described main transformer side is provided with horizontal power striped, described horizontal power striped one end connects wire, and described wire one end connects voltage.
As a kind of optimal technical scheme of the present utility model, described wire one end connects bypass, and the described wire other end connects resistance.
As a kind of optimal technical scheme of the present utility model, it is provided with earth lead below described bypass, below described earth lead, is provided with main road.
As a kind of optimal technical scheme of the present utility model, described reference voltage side is provided with sampling and compares, described sampling comparison module side is provided with isolation feedback module, and described isolation feedback module side is provided with PWM control module, and described PWM control module upper end is provided with power conversion modules.
This utility model is reached to provide the benefit that: a kind of multichannel constant voltage source, novel by input filter module, power conversion modules, main transformer, PWM control module, isolation feedback module composition voltage control loop, in-phase input end is then set by the intrinsic standoff ratio of resistance.If output voltage rises, then resistive voltage also rises, and this voltage compares with end of oppisite phase 2.5V reference voltage, flows into the LED in optocoupler, and then controls primary side PWM output duty cycle by feedback control network, makes output voltage be operated in pressure constant state.
Accompanying drawing explanation
Accompanying drawing is used for providing being further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, is not intended that restriction of the present utility model together with embodiment of the present utility model.
In the accompanying drawings:
Fig. 1 is a kind of multichannel constant voltage source overall structure schematic diagram described in this utility model embodiment；
Label in figure: 1, input filter module；2, power conversion modules；3, main transformer；4, power striped；5, horizontal power striped；6, voltage；7, bypass；8, earth lead；9, main road；10, reference voltage module；11, sampling comparison module；12, wire；13, isolation feedback module；14, PWM control module；15, resistance.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains this utility model, be not used to limit this utility model.
Embodiment: refer to Fig. 1, this utility model one multichannel constant voltage source, including input filter module 1, power conversion modules 2, main transformer 3, PWM control module 14, isolation feedback module 13, sampling comparison module 11 and reference voltage module 10, described input filter module 1 side is provided with power conversion modules 2, described power conversion modules 2 one end connects power striped 4, described power striped 4 side is provided with main transformer 3, described main transformer 3 side is provided with horizontal power striped 5, described horizontal power striped 5 one end connects wire 12, described wire 12 one end connects voltage 6.
Described wire 16 one end connects bypass 7, described wire 12 other end connects resistance 15, it is provided with earth lead 8 below described bypass 7, it is provided with main road 9 below described earth lead 8, described reference voltage module 10 side is provided with sampling comparison module 11, described sampling comparison module 11 side is provided with isolation feedback module 13, and described isolation feedback module 13 side is provided with PWM control module 14, and described PWM control module 14 upper end is provided with power conversion modules 2.PWM output duty cycle can be controlled by input filter module, power conversion modules, main transformer, PWM control module, isolation feedback module composition voltage control loop, make output voltage be operated in pressure constant state.
It should be noted that, this utility model is a kind of multichannel constant voltage source, during work, novel by input filter module 1, power conversion modules 2, main transformer 3, PWM control module 14, isolation feedback module 13 form voltage control loop, in-phase input end is then set by the intrinsic standoff ratio of resistance.If output voltage rises, then resistive voltage also rises, and this voltage compares with end of oppisite phase 2.5V reference voltage, flows into the LED in optocoupler, and then controls primary side PWM output duty cycle by feedback control network, makes output voltage be operated in pressure constant state.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, it is not limited to this utility model, although this utility model being described in detail with reference to previous embodiment, for a person skilled in the art, technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (4)
1. a multichannel constant voltage source, including input filter module (1), power conversion modules (2), main transformer (3), PWM control module (14), isolation feedback module (13), sampling comparison module (11) and reference voltage module (10), it is characterized in that, this multichannel constant voltage source also includes power striped (4), horizontal power striped (5), wire (12), described input filter module (1) side is provided with power conversion modules (2), described power conversion modules (2) one end connects power striped (4), described power striped (4) side is provided with main transformer (3), described main transformer (3) side is provided with horizontal power striped (5), described horizontal power striped (5) one end connects wire (12), described wire (12) one end connects voltage (6).
A kind of multichannel constant voltage source the most according to claim 1, it is characterized in that, this multichannel constant voltage source also includes bypass (7), and described wire (12) one end connects bypass (7), and described wire (12) other end connects resistance (15).
A kind of multichannel constant voltage source the most according to claim 2, it is characterised in that described bypass (7) lower section is provided with earth lead (8), described earth lead (8) lower section is provided with main road (9).
A kind of multichannel constant voltage source the most according to claim 1, it is characterized in that, described reference voltage module (10) side is provided with sampling comparison module (11), described sampling comparison module (11) side is provided with isolation feedback module (13), described isolation feedback module (13) side is provided with PWM control module (14), and described PWM control module (14) upper end is provided with power conversion modules (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520936567.XU CN205490087U (en) | 2015-11-20 | 2015-11-20 | Multichannel constant voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520936567.XU CN205490087U (en) | 2015-11-20 | 2015-11-20 | Multichannel constant voltage power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205490087U true CN205490087U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520936567.XU Expired - Fee Related CN205490087U (en) | 2015-11-20 | 2015-11-20 | Multichannel constant voltage power supply |
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| CN (1) | CN205490087U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327145A (en) * | 2018-11-07 | 2019-02-12 | 国充充电科技江苏股份有限公司 | A kind of Switching Power Supply of output ripple suppression circuit topological structure |
| CN109888808A (en) * | 2019-03-22 | 2019-06-14 | 长春职业技术学院 | One kind storing up microgrid energy management control system based on scenes in a mountain district |
-
2015
- 2015-11-20 CN CN201520936567.XU patent/CN205490087U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327145A (en) * | 2018-11-07 | 2019-02-12 | 国充充电科技江苏股份有限公司 | A kind of Switching Power Supply of output ripple suppression circuit topological structure |
| CN109888808A (en) * | 2019-03-22 | 2019-06-14 | 长春职业技术学院 | One kind storing up microgrid energy management control system based on scenes in a mountain district |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20191120 |