CN204517661U - A kind of without harmonic wave automatic AC stabilized voltage power supply - Google Patents
A kind of without harmonic wave automatic AC stabilized voltage power supply Download PDFInfo
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- CN204517661U CN204517661U CN201520156994.6U CN201520156994U CN204517661U CN 204517661 U CN204517661 U CN 204517661U CN 201520156994 U CN201520156994 U CN 201520156994U CN 204517661 U CN204517661 U CN 204517661U
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Abstract
The utility model relates to a kind of without harmonic wave automatic AC stabilized voltage power supply, and comprise AC transformer, switches set, described AC transformer secondary side is made up of some different windings, and winding is connected with switches set, and transformer output voltage value is controlled by switches set.The utility model has the advantages that: AC transformer is controlled by winding size and switches set, output be just profound voltage, overload capacity is comparatively strong, and can not produce interference to electrical network, the voltage of output can adjust according to the precision of 1V.Single-chip microcomputer close loop negative feedback controls, and circuit is simple and reliable, and operation expense is low, has civilian, that industry is wider suitable application area.The heap(ed) capacities of functional reliability, dynamic response, pressurizer precision, voltage stabilized range, power transformer etc. close index and all reach optimum.
Description
Technical field
The utility model relates to a kind of without harmonic wave automatic AC stabilized voltage power supply.
Background technology
The voltage of alternating current is usually because the increase and decrease of electrical grid transmission and user power utilization equipment, cause alternating voltage unstable, China also has the power supply quality of a lot of regional AC network not too high at present, show as frequent overvoltage/undervoltage, instantaneously to fall, surge and spike interference more etc.And along with science and technology and expanding economy, the application of information technology and microelectric technique, the requirement of a large amount of power consumption equipment to power supply quality is more and more higher, thus, electric power voltage-stabilizer has become many electronic equipments (as computer, communication equipment, broadcasting and TV transmitter, Medical Devices etc.) and electromechanical equipment (as Digit Control Machine Tool, injection molding machine etc.) indispensable electric supply installation.Its topmost shortcoming of the alternating current steady voltage plug occurred in the market is that response speed is slow, in two-way electrical network transfer process, easily produce overvoltage or under-voltage; There is mechanical wear, fragile; Output distortion is large.Along with technological progress, contact relay equipment just progressively by contactless, integrated circuit, the electronic equipment such as embedded replace, this kind equipment is more and more higher to power quality requirements.The stability of the alternating voltage of former revolutionary bases, minority-inhabited areas, frontier areas and poverty-stricken areas is especially not as people's will simultaneously.Voltage stabilizing circuit has that efficiency is high, reliability is high, antijamming capability is strong.The control of single-chip microcomputer makes control circuit greatly simplify; also miscellaneous function can be added; as the various function such as failure diagnosis, voltage stabilizing instruction, the sound and light alarm that transfinites, delayed startup, fault detect, open-phase protection, and the appearance of alternating current steady voltage plug will well address this problem.
Summary of the invention
For overcoming the deficiencies in the prior art, the purpose of this utility model is to provide a kind of without harmonic wave automatic AC stabilized voltage power supply, utilize the multiple different winding of transformer to export different voltage values, these different magnitudes of voltage are carried out combination superposition, the magnitude of voltage required for generation.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of without harmonic wave automatic AC stabilized voltage power supply, comprise AC transformer, switches set, described AC transformer secondary side is made up of some different windings, and winding is connected with switches set, and transformer output voltage value is controlled by switches set.
Be connected with switch between described winding, some switches composition switches set, the B end realizing winding is held with the A of adjacent winding or B holds and is connected.
Each winding voltage value of described AC transformer secondary side is the n power numerical value of 2, n=0 ~ 7.
Also comprise single chip machine controlling circuit, power amplification circuit, feedback circuit, single chip machine controlling circuit is connected with power amplification circuit, and AC transformer primary side is connected with single chip machine controlling circuit by feedback circuit; Single chip machine controlling circuit is for inputting detection, and sequential operation, exports and judge; Power amplification circuit the low level signal amplification of single chip machine controlling circuit, driving switch group; Feedback circuit completes the voltage detecting input signal needed for single chip machine controlling circuit.
Compared with prior art, the beneficial effects of the utility model are:
AC transformer is controlled by winding size and switches set, output be just profound voltage, overload capacity is comparatively strong, and can not produce interference to electrical network, the voltage of output can adjust according to the precision of 1V.Single-chip microcomputer close loop negative feedback controls, and circuit is simple and reliable, and operation expense is low, has civilian, that industry is wider suitable application area.The indexs of correlation such as the heap(ed) capacity of functional reliability, dynamic response, pressurizer precision, voltage stabilized range, power transformer all reach optimum.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is AC transformer structure principle chart.
Embodiment
Below in conjunction with Figure of description, the utility model is described in detail, but it should be noted that enforcement of the present utility model is not limited to following execution mode.
See Fig. 1, Fig. 2, a kind of without harmonic wave automatic AC stabilized voltage power supply, comprise AC transformer, switches set, described AC transformer secondary side is made up of some different windings, and winding is connected with switches set, and transformer output voltage value is controlled by switches set.
Be connected with switch between winding, some switches composition switches set, the B end realizing winding is held with the A of adjacent winding or B holds and is connected.Each winding voltage value of AC transformer secondary side is n (n=0 ~ 7) the power numerical value of 2.
Also comprise single chip machine controlling circuit, power amplification circuit, feedback circuit without harmonic wave automatic AC stabilized voltage power supply, single chip machine controlling circuit is connected with power amplification circuit, and AC transformer primary side is connected with single chip machine controlling circuit by feedback circuit; Single chip machine controlling circuit is for inputting detection, and sequential operation, exports and judge; Power amplification circuit the low level signal amplification of single chip machine controlling circuit, driving switch group; Feedback circuit completes the voltage detecting input signal needed for single chip machine controlling circuit.
See Fig. 1, be made up of transformer, switches set, single chip machine controlling circuit, power amplification circuit and feedback circuit without harmonic wave automatic AC stabilized voltage power supply.Transformer is used for the input of primary voltage and the conversion of secondary winding combinations of voltages.Switches set is made up of K8, K7, K6, K5, K4, K3, K2 and K1, and Fig. 2 is shown in by winding diagram, for completing voltage transitions.Single chip machine controlling circuit is the core control portions of stabilized voltage power supply, and input detects, sequential operation, exports the realization of the functions such as judgement.Power amplification circuit the low level signal amplification of single chip machine controlling circuit, driving switch group.Feedback circuit completes the voltage detecting input signal needed for single chip machine controlling circuit.Control the power supply that power supply completes interlock circuit, because the input voltage controlling power supply comes from the voltage circuit before voltage stabilizing, so require that the DC voltage-stabilizing scope of stabilized voltage power supply wants wider, to meet the power reguirements of load circuit.
Its principle is: adopt alternating voltage stack combinations control mode, with traditional digital control be different control mode, it produces output voltage after utilizing the voltage of the various combination of the various winding of transformer secondary to superpose.The most basic combination controls to be carry out combination according to the voltage of binary numeral to control.
In formula: x
tin 0 or 1; I=1 ~ m; V is output voltage.
Known from formula (1): as long as arrange numerical value, that is: an i=1 ~ m, recycling x
tequal the switching characteristic of 0 or 1, different numerical value is opened or closed, just can be combined into various numerical value.
The voltage stabilizing that this binary combinations of values process may be used for alternating voltage controls, and its implementation procedure is made up of the part of two below.The first, the secondary side of AC transformer is divided into multiple windings of different electric pressure, and ensures that the magnitude of voltage of each winding is the numerical value of n (n=0 ~ 7) power of 2.The second, the voltage of each winding can be superposed with the voltage of other winding by switch control rule.
When power supply for single-phase 220V carries out combinations of voltages control, the voltage of the secondary side winding of its transformer is respectively: 1V, 2V, 4V, 8V, 16V, 32V, 64V, 128V be totally 8 groups of numerical value.This sees Fig. 2 with the transformer controlled and switch conditions thereof.
When the secondary side switches of transformer can provide the scope of output voltage to be 0 ~ 255V, within minimum resolution can reach 1V by combination closed and disconnected.Such as when input voltage is 220V, the K switch 8 of secondary side, K7, K5, K4 and K3 are closed into A end, and K6, K2 and K1 are closed into B end, just can obtain the output voltage of 220V at output.
When input voltage reduces, the output voltage of secondary side also can along with reduction, at this moment the multistage winding of secondary side has been not just binary normal voltage, and we are by by calculating, to export be the combination table that the K8 ~ K1 of 220V voltage approximation opens and closes, in table 1.
Table 1:
Without the harmonic wave automatic AC stabilized voltage power supply course of work: when the input voltage of externally fed circuit reduces, the voltage of feedback loop also will synchronously change, namely the voltage of feedback circuit also can reduce, and the feedback voltage being at this moment connected on control circuit is arrived by microprocessor detect.The feed back input voltage of single-chip microcomputer reduces, the data that the numerical value provided according to feedback circuit carries out inside program compare by the software program of single chip machine controlling circuit, due to prior by calculating relevant data table in program, leave in program, scm software, by according to the tables of data drawn, completes the output control signal of the corresponding I/O mouth of single-chip microcomputer.The control signal that single-chip microcomputer exports is as the input signal of power amplifier, and after input signal is amplified by power amplifier, K8 ~ K1 switch of control switch group closed, completes the output of burning voltage.
Single chip machine controlling circuit core parts adopt AVR single chip, and because circuit structure is relatively simple, required raw material and electric equipment all can have been bought, and price is not high, also without the need to special high precision measuring instrument, so test get up also comparatively easy.
Claims (4)
1. without a harmonic wave automatic AC stabilized voltage power supply, it is characterized in that, comprise AC transformer, switches set, described AC transformer secondary side is made up of some different windings, and winding is connected with switches set, and transformer output voltage value is controlled by switches set.
2. according to claim 1 a kind of without harmonic wave automatic AC stabilized voltage power supply, it is characterized in that, be connected with switch between described winding, some switch composition switches set, the B realizing winding holds and to hold with the A of adjacent winding or B holds and is connected.
3. according to claim 1 a kind of without harmonic wave automatic AC stabilized voltage power supply, it is characterized in that, each winding voltage value of described AC transformer secondary side is the n power numerical value of 2, n=0 ~ 7.
4. according to claim 1 a kind of without harmonic wave automatic AC stabilized voltage power supply, it is characterized in that, also comprise single chip machine controlling circuit, power amplification circuit, feedback circuit, single chip machine controlling circuit is connected with power amplification circuit, and AC transformer primary side is connected with single chip machine controlling circuit by feedback circuit; Single chip machine controlling circuit is for inputting detection, and sequential operation, exports and judge; Power amplification circuit the low level signal amplification of single chip machine controlling circuit, driving switch group; Feedback circuit completes the voltage detecting input signal needed for single chip machine controlling circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520156994.6U CN204517661U (en) | 2015-03-19 | 2015-03-19 | A kind of without harmonic wave automatic AC stabilized voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520156994.6U CN204517661U (en) | 2015-03-19 | 2015-03-19 | A kind of without harmonic wave automatic AC stabilized voltage power supply |
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| Publication Number | Publication Date |
|---|---|
| CN204517661U true CN204517661U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520156994.6U Expired - Fee Related CN204517661U (en) | 2015-03-19 | 2015-03-19 | A kind of without harmonic wave automatic AC stabilized voltage power supply |
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| CN (1) | CN204517661U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693907A (en) * | 2018-05-04 | 2018-10-23 | 兰州智豆信息科技有限公司 | Digital buck alternating current steady voltage plug |
-
2015
- 2015-03-19 CN CN201520156994.6U patent/CN204517661U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693907A (en) * | 2018-05-04 | 2018-10-23 | 兰州智豆信息科技有限公司 | Digital buck alternating current steady voltage plug |
| CN108693907B (en) * | 2018-05-04 | 2020-05-22 | 兰州智豆信息科技有限公司 | Digital voltage-reducing AC voltage-stabilized source |
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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: 20150729 Termination date: 20160319 |