CN201887674U - Simple regulated power supply - Google Patents
Simple regulated power supply Download PDFInfo
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- CN201887674U CN201887674U CN2010206019583U CN201020601958U CN201887674U CN 201887674 U CN201887674 U CN 201887674U CN 2010206019583 U CN2010206019583 U CN 2010206019583U CN 201020601958 U CN201020601958 U CN 201020601958U CN 201887674 U CN201887674 U CN 201887674U
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- power supply
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- effect transistor
- field effect
- voltage
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Abstract
The utility model discloses a simple regulated power supply, which comprises a power supply, a bridge rectifier circuit, a voltage division circuit, a voltage detector and a field effect transistor. An input end of the bridge rectifier circuit is connected with the power supply; the voltage division circuit is connected in parallel between an output positive electrode and an output negative electrode of the bridge rectifier circuit; an input end of a voltage detecting module is connected to a sampling end of the voltage division circuit; an output end of the voltage detecting module is connected with a grid electrode of the field effect transistor; a source electrode of the field effect transistor is grounded; a filter capacitor is connected between a drain electrode of the field effect transistor and the output positive electrode of the bridge rectifier circuit; and a positive electrode and a negative electrode of the filter capacitor are output ends of the regulated power supply. When sampling voltage inputted to the voltage detecting module is higher than set voltage, the voltage detecting module outputs low level, the field effect transistor is conducted, and output voltage is stabilized by controlling conduction of the field effect transistor. Compared with the prior art, the simple regulated power supply has the advantages of simple lines and low cost.
Description
Technical field
The utility model relates to a kind of simple and easy stabilized voltage power supply.Be applicable to not isolated DC power supply of step-down.
Background technology
The purposes of power supply is very extensive, at existing step-down isolated DC power supply not, adopts chopping way, needs inductance, needs pwm chip, complex circuit, and cost is higher, should less demanding field at some, cause the cost waste.
Summary of the invention
The purpose of this utility model provides simple, the lower-cost simple and easy stabilized voltage power supply of a kind of circuit.
To achieve these goals, the technical scheme that the utility model adopted is: a kind of simple and easy stabilized voltage power supply, comprise power supply, bridge rectifier, bleeder circuit, voltage detector and field effect transistor, the input of above-mentioned bridge rectifier connects above-mentioned power supply, above-mentioned bleeder circuit is connected between the output both positive and negative polarity of above-mentioned bridge rectifier, the input of above-mentioned voltage detection module is connected in the sampling end of above-mentioned bleeder circuit, the output of above-mentioned voltage detection module connects the grid of above-mentioned field effect transistor, the source ground of above-mentioned field effect transistor, be connected with filter capacitor between the drain electrode of above-mentioned field effect transistor and the output cathode of above-mentioned bridge rectifier, the both positive and negative polarity of above-mentioned filter capacitor is the output of stabilized voltage power supply.
Above-mentioned bleeder circuit is formed by first resistance and second resistance serial connection.
Be connected with voltage-stabiliser tube between the grid of above-mentioned field effect transistor and the output negative pole of above-mentioned bridge rectifier.
After adopting such scheme, simple and easy stabilized voltage power supply of the present utility model, AC power is undertaken carrying out dividing potential drop by bleeder circuit after the rectification by bridge rectifier, sampled voltage after the dividing potential drop inputs to voltage detection module, if this sampled voltage is greater than setting voltage, voltage detection module output low level then, the field effect transistor conducting comes regulated output voltage by the conducting degree of control field effect transistor.Compared with prior art, the beneficial effects of the utility model are: circuit is simple, and cost is low.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Simple and easy stabilized voltage power supply of the present utility model as shown in Figure 1, comprises power supply, rectifier bridge D1-D4, bleeder circuit, voltage detector IC1, field effect transistor Q2 and filter capacitor C2.The input of rectifier bridge D1-D4 connects power input J2, J3, the bleeder circuit that is in series by resistance R 1 and resistance R 2 is connected between the output both positive and negative polarity of rectifier bridge D1-D4, the input of voltage detection module IC1 is connected in the sampling end (end that resistance R 1 is connected with resistance R 2) of bleeder circuit, the output of voltage detection module IC1 connects the grid of field effect transistor Q2, the source ground of field effect transistor Q2, filter capacitor C2 is connected between the output cathode of the drain electrode of field effect transistor Q2 and rectifier bridge D1-D4, and the both positive and negative polarity of filter capacitor C2 (J1 and J4) is the output of stabilized voltage power supply.
For the grid of protecting field effect transistor Q2 does not produce overvoltage, between the output negative pole of the grid of field effect transistor Q2 and rectifier bridge D1-D4, be connected with voltage-stabiliser tube D6.
The utility model passes through rectifier bridge D1-D4 with the 220Vac power rectifier, DC power supply after the rectification is carried out dividing potential drop by resistance R 1, R2, sampled voltage after the dividing potential drop inputs to voltage detection module IC, if this sampled voltage is greater than setting voltage (this example is 120Vdc), voltage detection module IC output low level then, field effect transistor Q2 conducting comes regulated output voltage by the conducting degree of control field effect transistor Q2, obtains the direct voltage of 120Vdc between terminal J1 and J4.Voltage-stabiliser tube D6 can protect the grid of field effect transistor Q2 not produce overvoltage.
Claims (3)
1. simple and easy stabilized voltage power supply, it is characterized in that: comprise power supply, bridge rectifier, bleeder circuit, voltage detector and field effect transistor, the input of above-mentioned bridge rectifier connects above-mentioned power supply, above-mentioned bleeder circuit is connected between the output both positive and negative polarity of above-mentioned bridge rectifier, the input of above-mentioned voltage detection module is connected in the sampling end of above-mentioned bleeder circuit, the output of above-mentioned voltage detection module connects the grid of above-mentioned field effect transistor, the source ground of above-mentioned field effect transistor, be connected with filter capacitor between the drain electrode of above-mentioned field effect transistor and the output cathode of above-mentioned bridge rectifier, the both positive and negative polarity of above-mentioned filter capacitor is the output of stabilized voltage power supply.
2. a kind of simple and easy stabilized voltage power supply according to claim 1 is characterized in that: above-mentioned bleeder circuit is formed by first resistance and second resistance serial connection.
3. a kind of simple and easy stabilized voltage power supply according to claim 1 is characterized in that: be connected with voltage-stabiliser tube between the grid of above-mentioned field effect transistor and the output negative pole of above-mentioned bridge rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206019583U CN201887674U (en) | 2010-03-20 | 2010-10-29 | Simple regulated power supply |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020168761.5 | 2010-03-20 | ||
| CN201020168761 | 2010-03-20 | ||
| CN2010206019583U CN201887674U (en) | 2010-03-20 | 2010-10-29 | Simple regulated power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201887674U true CN201887674U (en) | 2011-06-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206019583U Expired - Lifetime CN201887674U (en) | 2010-03-20 | 2010-10-29 | Simple regulated power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201887674U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594167A (en) * | 2012-02-27 | 2012-07-18 | 深圳市富满电子有限公司 | AC-DC (alternating-current/direct-current) voltage stabilizing protection circuit and chip power conversion circuit |
| CN104569857A (en) * | 2015-01-21 | 2015-04-29 | 浪潮电子信息产业股份有限公司 | Design method of alternative load meter and test tool thereof |
| CN106018725A (en) * | 2016-07-06 | 2016-10-12 | 江苏中农物联网科技有限公司 | Aquaculture water quality monitoring device comprising voltage-stabilized source |
| CN107634644A (en) * | 2017-10-31 | 2018-01-26 | 无锡汉神电气股份有限公司 | A kind of surge mu balanced circuit |
| CN113133155A (en) * | 2021-04-01 | 2021-07-16 | 山东艾琳智能科技有限公司 | Single-fire intelligent switch power supply control system |
-
2010
- 2010-10-29 CN CN2010206019583U patent/CN201887674U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594167A (en) * | 2012-02-27 | 2012-07-18 | 深圳市富满电子有限公司 | AC-DC (alternating-current/direct-current) voltage stabilizing protection circuit and chip power conversion circuit |
| CN104569857A (en) * | 2015-01-21 | 2015-04-29 | 浪潮电子信息产业股份有限公司 | Design method of alternative load meter and test tool thereof |
| CN106018725A (en) * | 2016-07-06 | 2016-10-12 | 江苏中农物联网科技有限公司 | Aquaculture water quality monitoring device comprising voltage-stabilized source |
| CN107634644A (en) * | 2017-10-31 | 2018-01-26 | 无锡汉神电气股份有限公司 | A kind of surge mu balanced circuit |
| CN113133155A (en) * | 2021-04-01 | 2021-07-16 | 山东艾琳智能科技有限公司 | Single-fire intelligent switch power supply control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: XIAMEN INNOV ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER NAME: XIAMEN CITY INNOV ELECTRONICS TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 361000, No. 101, No. 1 Xiang Xiang Road, torch hi tech Zone (Xiangan), Xiamen, Fujian Patentee after: Xiamen Innov Electronic Technology Co., Ltd. Address before: 361000 No. 1 Xiang Xiang Road, Xiangan Industrial Zone, Fujian, Xiamen Patentee before: Xiamen City Innov Electronics Technology Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: XIAMEN INNOV POWER SUPPLY ELECTRONICS CO., LTD. Free format text: FORMER OWNER: XIAMEN INNOV ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20120820 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120820 Address after: 361000, No. 401, No. 1 Xiang Xiang Road, torch hi tech Zone (Xiangan), Xiamen, Fujian Patentee after: XIAMEN INNOV CHARGE SOURCE ELECTRONICS CO., LTD. Address before: 361000, No. 101, No. 1 Xiang Xiang Road, torch hi tech Zone (Xiangan), Xiamen, Fujian Patentee before: Xiamen Innov Electronic Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |