CN200947577Y - Adjustable constant current voltage-stabilized power supply - Google Patents
Adjustable constant current voltage-stabilized power supply Download PDFInfo
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- CN200947577Y CN200947577Y CN 200620043724 CN200620043724U CN200947577Y CN 200947577 Y CN200947577 Y CN 200947577Y CN 200620043724 CN200620043724 CN 200620043724 CN 200620043724 U CN200620043724 U CN 200620043724U CN 200947577 Y CN200947577 Y CN 200947577Y
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Abstract
The utility model discloses an adjustable constant current regulated power supply which is composed of a voltage lowering part, a rectifying part, a voltage regulated and overcurrent protection part etc., as well as an adjustable constant current constant voltage charger; the input end of a firewire of an AC power supply is provided with a device that can distinguish the polarity of the AC power supply; a group of capacitance devices which can regulate the capacitance is in series connected to the part between the device and the rectifier circuit, the DC output end after the rectification is connected with a voltage-regulated shunt circuit in parallel, thus, the utility model can regulate the output voltage freely, the output current is constant and does no fear the short circuit, and the utility model is not affected by the AC voltage of the input end. The using of 110v, 220v or 380v alternating current can all guarantee the same output voltage.
Description
Affiliated technical field
The utility model belongs to the electronic product class, is specifically related to a kind of D.C. regulated power supply, particularly a kind of adjustable constant current regulated power supply.
Background technology
At some electronic equipments, usually can use some accessory power supplys in a lot of small household appliances in instrument, instrument and the daily life and provide power supply to the said equipment.General power supply has transformer ' s type, Switching Power Supply class etc., but transformer ' s type power circuit efficient is lower, and volume is big, Heavy Weight, cost is higher.And the switch power supply line structure is complicated, and power supply ripple is big, and the cost height also can produce other electronic equipments and disturb.
Summary of the invention
The utility model provides a kind of adjustable constant current regulated power supply, this power supply need not power transformer, simple in structure, with low cost, dynamic response is fast, efficient is high, output current is constant, but the regulated at will output voltage, and output is not afraid of short circuit, in most of the cases alternative above-mentioned power supply.Be particularly suitable for storage battery charging etc. to equipment and battery.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of adjustable constant current regulated power supply is mainly by the step-down part; rectifying part; pressure regulation and overcurrent protection partly wait composition; wherein one device that can distinguish AC power polarity is arranged at the live wire input of AC power; connected on the live wire between this device and the rectification circuit capacitive means of one group of adjustable condenser capacity; dc output end parallel connection after the rectification one pressure regulation shunt circuit; device and the diode that shows electric current of on major loop thereafter, having connected; diode is by the device of an electric capacity in parallel and a display voltage between the output of outlet end part, the overcurrent protection fusible link of having connected between the device of display voltage and the output.
The above-mentioned device of distinguishing AC power polarity is to touch the head series connection by a current-limiting resistance that connects with power firestreak, neon bulb and one to constitute.The capacitive means of control capacittance capacity is polarity free capacitor and the corresponding many driving switch series connection that is had nothing in common with each other by a pool-size, the combination of the electric capacity of different capabilities or electric capacity can be selected separately to be connected with many driving switch respectively, between electric capacity and the many driving switch also parallel connection one resistance.Resistance is used for discharging in the electric capacity dump energy and uses after the utility model use to finish.
The pressure regulation shunt circuit can have a variety of, can be made up of a controllable silicon and an adjustable resistance that is connected between the SCR control utmost point and the anode.Also can directly follow the rectification output end parallel connection by a high-power voltage stabilizing didoe.Also can be by a triode and an adjustable resistance that is connected between transistor base and the emitter, and an adjustable resistance that is connected between transistor base and the collector electrode be formed.Can also be the voltage stabilizing didoe combination of one group of scalable voltage stabilizing value being connected with anode by a controllable silicon and one and the SCR control utmost point, and driving switch be formed; Voltage stabilizing didoe is selectable separately respectively to be connected with driving switch.
The device of above-mentioned demonstration electric current is an ammeter; The device of above-mentioned display voltage is a voltmeter.Certainly can also be other display circuit, show as charactron, or diode displaying or the like.
The beneficial effects of the utility model are: owing to adopted above-mentioned technology, the utlity model has following advantage, circuit structure is simple, volume is little, in light weight, efficient height, less demanding to components and parts, help realizing the miniaturization of electronic equipment and reducing cost, to the essentially no requirement of input ac power voltage, only need to regulate the pressure regulation shunt circuit, just can obtain the direct voltage output in the wide range; And output current is constant is not afraid of short circuit.
In the time of as charger, owing to be constant current constant voltage output, avoided battery since discharge when too many charging initial stage charging current cause influence to battery life too greatly, the charging later stage is under the effect of pressure regulation shunt circuit, charging current reduces automatically, enter constant voltage charge, can not cause over-charging of battery.So can significantly improve the life-span of charging quality and battery.Also have battery polar in addition and connect anti-defencive function.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is one of embodiment of pressure regulation shunt circuit 1 among Fig. 1;
Fig. 3 be pressure regulation shunt circuit 1 among Fig. 1 embodiment two;
Fig. 4 be pressure regulation shunt circuit 1 among Fig. 1 embodiment three;
Fig. 5 be pressure regulation shunt circuit 1 among Fig. 1 embodiment four;
Circuit theory diagrams shown in Figure 1 are by AC power AC input, mains switch SB, neon bulb N, resistance R 1, resistance R 2, resistance R 3, LED, capacitor C 1-C3, capacitor C 4, driving switch K1, driving switch K2, diode D1-D4, diode D5, pressure regulation shunt circuit 1, ammeter A, voltmeter V, fuse BX and dc output end DC form.
Pressure regulation shunt circuit shown in Figure 2; Form by controllable silicon KG and adjustable resistance RP.
Pressure regulation shunt circuit shown in Figure 3; DW forms by voltage stabilizing didoe.
Pressure regulation shunt circuit shown in Figure 4; By triode BG, and adjustable resistance RP1, RP2 form.
Pressure regulation shunt circuit shown in Figure 5; By controllable silicon KG, voltage stabilizing didoe DW1-DW7 and driving switch K2 form.
Embodiment
Shown in the figure (1), alternating current is by the input of AC end, by one of non-polar capacitor C 1-C3 by diode D1-D4 rectification after output near the direct current of alternating voltage, because the current limliting hypotensive effect of capacitor C 1-C3, by the pressure regulation shunting of pressure regulation shunt circuit 1, just can change the VD of output.Capacitor C 4 can be improved the output wave mode, improves load-carrying ability.Diode D5 the time prevents that as charging battery from damaging the pressure regulation shunt circuit by 1 discharge of pressure regulation shunt circuit.Ammeter A and voltmeter V can observe voltage and current conditions in good time.
Sort circuit ac input end live wire of the present utility model should be connected on capacitor C 1-C3 one end, if connect anti-, dc output end just might with on the alternating voltage of high pressure, have certain potential safety hazard, so the electric power polarity identification device has just been formed in resistance R 1 and neon bulb N series connection.This device one terminates at the end that ac input end has capacitor C 1-C3, other one terminates on the metal button of mains switch SB, when plugging in plug, touch the metal button with hand earlier, if neon bulb is not luminous, illustrate that circuit connects instead, change plug direction, touch the metal button again, can see that at this moment neon bulb is luminous.Press the button, power connection, the light-emitting diode LET that is connected in parallel on power input just begins luminous by resistance R 2 step-downs, the indication power connection.Average anode current is the electric capacity decision that is connected on ac input end by change, stirs the electric capacity that driving switch K1 can connect different capabilities among the C1-C3 respectively, reaches the purpose of regulating output current.Because capacitor C 1-C3 also can store certain electric weight after turning off power supply, resistance R 3 can discharge remaining electric weight after turning off power supply.
Output end voltage is realized by pressure regulation shunt circuit 1, as shown in Figure 2: controllable silicon KG is connected in parallel on the dc output end of rectifying part, adjustable resistance RP connects the anode and the control utmost point of controllable silicon KG respectively, the resistance that changes adjustable resistance RP just can change the input signal strength of the SCR control utmost point, thereby change silicon controlled conducting angle, reach the purpose of regulating output voltage.
As shown in Figure 3: when power output hour, can directly be connected in parallel on the dc output end of rectifying part with voltage stabilizing didoe DW, the power of voltage stabilizing didoe DW is wanted enough greatly certainly.When rectification output end voltage surpassed the voltage stabilizing value of voltage stabilizing didoe, voltage stabilizing didoe DW reverse-conducting needed only load current less than output current, and voltage maintains certain value all the time and remains unchanged.
As shown in Figure 4: the purpose that equally also can reach pressure regulation with triode, triode BG is connected in parallel on rectification output end equally, regulate the input signal strength that adjustable resistance RP1 and RP2 change transistor base, thereby change the electric current between the emitter and collector, output voltage will change thereupon.
As shown in Figure 5: controllable silicon KG is connected in parallel on the dc output end of rectifying part, the voltage stabilizing didoe DW1-DW7 that one group of voltage stabilizing value has nothing in common with each other with driving switch K2 series connection after, connect the silicon controlled anode and the control utmost point respectively, stir driving switch K2 and just can select to connect with different voltage stabilizing didoes, the silicon controlled control utmost point just obtains the triggering signal of varying strength.Thereby obtain the different angles of flow and change output voltage.The voltage stabilizing didoe of voltage stabilizing value maximum directly is connected with the control utmost point with the silicon controlled anode among the DW1-DW7.The short time silicon controlled control utmost point Triggerless that causes when avoiding stirring driving switch K2.Controllable silicon raises by the back output voltage, causes danger.
When using as stabilized voltage power supply, regulate pressure regulation shunt circuit 1, observe voltmeter V, insert load after making output voltage meet load request.If voltage decline explanation output current is not enough after inserting load.It is just passable with the electric capacity connection of larger capacity to stir driving switch K1.
When using as charger, the most handy Fig. 2 or pressure regulation shunt circuit shown in Figure 5.Output voltage equals the voltage stabilizing value of voltage stabilizing didoe.As long as driving switch is selected the voltage stabilizing value to equal charging voltage and is added that the voltage stabilizing didoe of diode D5 voltage drop is just passable.Charging later stage charging current reduces automatically, after charging finishes.Electric current all passes through controllable silicon.Can not cause over-charging of battery, electric current sharply increases if battery polar connects inverse time, and current circuit is cut off in fuse BX fusing, changes battery polar, changes fuse and gets final product.
When the output short circuit, be equivalent to capacitor C 1-C3 directly with the AC power parallel connection.To this circuit without any influence.Permission of electronic component performance parameter and input ac voltage at circuit are higher than under the situation of output requirement, and the utility model is not subjected to the influence of input alternating voltage.So can guarantee same output voltage with 110v, 220v or 380v alternating current.
Claims (10)
1: a kind of adjustable constant current regulated power supply: by the step-down part; rectifying part; pressure regulation and overcurrent protection are partly formed; it is characterized in that: one device that can distinguish AC power polarity is arranged at the live wire input of AC power; connected on the live wire between this device and the rectification circuit capacitive means of one group of adjustable condenser capacity; dc output end parallel connection after the rectification one pressure regulation shunt circuit; device and the diode that shows electric current of on major loop thereafter, having connected; diode is by the device of an electric capacity in parallel and a display voltage between the output of outlet end part, the overcurrent protection fusible link of having connected between the device of display voltage and the output.
2: a kind of adjustable constant-current constant-voltage charging device: by the step-down part; rectifying part; pressure regulation and overcurrent protection are partly formed; it is characterized in that: one device that can distinguish AC power polarity is arranged at the live wire input of AC power; connected on the live wire between this device and the rectification circuit capacitive means of one group of adjustable condenser capacity; dc output end parallel connection after the rectification one pressure regulation shunt circuit; device and the diode that shows electric current of on major loop thereafter, having connected; diode is by the device of an electric capacity in parallel and a display voltage between the output of outlet end part, the overcurrent protection fusible link of having connected between the device of display voltage and the output.
3: according to claim 1, one of 2 described adjustable constant current regulated power supply or adjustable constant-current constant-voltage charging devices, it is characterized in that: the described device of distinguishing AC power polarity is to be made of current-limiting resistance, neon bulb and a series connection of a touch head that connects with power firestreak.
4: according to claim 1, one of 2 described adjustable constant current regulated power supply or adjustable constant-current constant-voltage charging devices, it is characterized in that: the capacitive means of described control capacittance capacity is polarity free capacitor and the corresponding many driving switch series connection that is had nothing in common with each other by a pool-size; The combination of the electric capacity of different capabilities or electric capacity can be selected separately to be connected with many driving switch respectively, between electric capacity and the many driving switch also parallel connection one resistance.
5: according to claim 1, one of 2 described adjustable constant current regulated power supply or adjustable constant-current constant-voltage charging devices, it is characterized in that: described pressure regulation shunt circuit, form by a controllable silicon and the adjustable resistance that is connected between the SCR control utmost point and the anode.
6: according to claim 1, one of 2 described adjustable constant current regulated power supply or adjustable constant-current constant-voltage charging devices, it is characterized in that: described pressure regulation shunt circuit is with the rectification output end parallel connection by a high-power voltage stabilizing didoe.
7: according to claim 1, one of 2 described adjustable constant current regulated power supply or adjustable constant-current constant-voltage charging devices, it is characterized in that: described pressure regulation shunt circuit, be by a triode and an adjustable resistance that is connected between transistor base and the emitter, and an adjustable resistance that is connected between transistor base and the collector electrode is formed.
8: according to claim 1, one of 2 described adjustable constant current regulated power supply or adjustable constant-current constant-voltage charging devices, it is characterized in that: described pressure regulation shunt circuit, be the voltage stabilizing didoe combination of one group of scalable voltage stabilizing value being connected with anode by a controllable silicon and one and the SCR control utmost point, and driving switch is formed; Voltage stabilizing didoe is selectable separately respectively to be connected with driving switch.
9: according to claim 1, one of 2 described adjustable constant current regulated power supply or adjustable constant-current constant-voltage charging devices, it is characterized in that: the device of described demonstration electric current is an ammeter.
10: according to claim 1, one of 2 described adjustable constant current regulated power supply or adjustable constant-current constant-voltage charging devices, it is characterized in that: the device of described display voltage is a voltmeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620043724 CN200947577Y (en) | 2006-07-07 | 2006-07-07 | Adjustable constant current voltage-stabilized power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620043724 CN200947577Y (en) | 2006-07-07 | 2006-07-07 | Adjustable constant current voltage-stabilized power supply |
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| Publication Number | Publication Date |
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| CN200947577Y true CN200947577Y (en) | 2007-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200620043724 Expired - Fee Related CN200947577Y (en) | 2006-07-07 | 2006-07-07 | Adjustable constant current voltage-stabilized power supply |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647017A (en) * | 2012-04-30 | 2012-08-22 | 张芝仁 | Wind energy charger of battery vehicle |
| CN101909377B (en) * | 2009-06-08 | 2013-07-10 | 海洋王照明科技股份有限公司 | Warning light circuit |
| CN103904924A (en) * | 2014-03-06 | 2014-07-02 | 国家电网公司 | High-capacity anti-interference high-voltage switch test power source |
| CN103929061A (en) * | 2014-04-30 | 2014-07-16 | 航天科技控股集团股份有限公司 | Constant flow source with single power supply adjustable |
| CN104578726A (en) * | 2015-01-12 | 2015-04-29 | 深圳市美创仪器仪表有限公司 | Adjustable AC/DC voltage-stabilizing power supply |
| CN107332325A (en) * | 2017-08-31 | 2017-11-07 | 努比亚技术有限公司 | A kind of charger and mobile terminal |
| CN110970960A (en) * | 2018-09-30 | 2020-04-07 | 苏州四方杰芯电子科技有限公司 | Charge-discharge protection chip circuit control system |
| CN111682602A (en) * | 2020-05-15 | 2020-09-18 | 上海市基础工程集团有限公司 | Charging control device and method for storage battery car in tunnel |
-
2006
- 2006-07-07 CN CN 200620043724 patent/CN200947577Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909377B (en) * | 2009-06-08 | 2013-07-10 | 海洋王照明科技股份有限公司 | Warning light circuit |
| CN102647017A (en) * | 2012-04-30 | 2012-08-22 | 张芝仁 | Wind energy charger of battery vehicle |
| CN103904924A (en) * | 2014-03-06 | 2014-07-02 | 国家电网公司 | High-capacity anti-interference high-voltage switch test power source |
| CN103929061A (en) * | 2014-04-30 | 2014-07-16 | 航天科技控股集团股份有限公司 | Constant flow source with single power supply adjustable |
| CN104578726A (en) * | 2015-01-12 | 2015-04-29 | 深圳市美创仪器仪表有限公司 | Adjustable AC/DC voltage-stabilizing power supply |
| CN107332325A (en) * | 2017-08-31 | 2017-11-07 | 努比亚技术有限公司 | A kind of charger and mobile terminal |
| CN110970960A (en) * | 2018-09-30 | 2020-04-07 | 苏州四方杰芯电子科技有限公司 | Charge-discharge protection chip circuit control system |
| CN111682602A (en) * | 2020-05-15 | 2020-09-18 | 上海市基础工程集团有限公司 | Charging control device and method for storage battery car in tunnel |
| CN111682602B (en) * | 2020-05-15 | 2024-01-30 | 上海市基础工程集团有限公司 | Charging control device and control method for storage battery car in tunnel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070912 Termination date: 20100707 |