CN102739076A - Direct current stabilized voltage supply - Google Patents
Direct current stabilized voltage supply Download PDFInfo
- Publication number
- CN102739076A CN102739076A CN2011104525151A CN201110452515A CN102739076A CN 102739076 A CN102739076 A CN 102739076A CN 2011104525151 A CN2011104525151 A CN 2011104525151A CN 201110452515 A CN201110452515 A CN 201110452515A CN 102739076 A CN102739076 A CN 102739076A
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- China
- Prior art keywords
- voltage
- capacitor
- sample
- circuit
- voltage stabilizing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M7/2176—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only comprising a passive stage to generate a rectified sinusoidal voltage and a controlled switching element in series between such stage and the output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/05—Capacitor coupled rectifiers
Abstract
The invention relates to a direct current stabilized voltage supply, which is characterized in that by using the characteristics of an N-channel junction field effect tube, input alternating-current mains electricity is sampled through a fuse and a sampling resistor, and rectified by a rectifier bridge, and then a D drain voltage is obtained through a voltage-stabilizing capacitor and a voltage-stabilizing diode, the minimum value of the voltage is larger than the absolute value of a pinch-off voltage Vp; a grid electrode is grounded, the field effect tube works in a constant current region, and a preset relatively stable direct current voltage can be obtained from a source electrode through voltage stabilization by the voltage-stabilizing capacitor; the sampling resistor and the voltage-stabilizing capacitor at the input end can ensure that the minimum value of the drain voltage is larger than the absolute value of the pinch-off voltage, and the voltage-stabilizing diode can ensure normal working when the D drain voltage is larger than or equal to a breakdown voltage; a rheostat can added at the rear of a source electrode, thus an adjustable direct current voltage can be obtained; and several sampling resistors can be connected in series or in parallel at the output end, thus a plurality of voltages can be output. The direct current stabilized voltage supply provided by the invention has the advantages that the circuit structure is simple, the rectifying effect is good, thermal loss is small, and requirements by precision instruments can be met.
Description
Technical field
The present invention relates to D.C. regulated power supply.
Background technology
At present, D.C. regulated power supply is a lot, arrives equipment and instrument greatly, and telecomputer is little of charger, general complicated circuit, and cost is high, and voltage regulation result is bad.
Summary of the invention
The purpose of this invention is to provide a kind of D.C. regulated power supply, this power circuit is simple, utilizes the characteristic of N channel junction field-effect pipe; Through a fuse and sample resistance the input AC civil power is taken a sample; Again through a rectifier bridge rectification, obtain a D drain voltage through individual voltage regulation capacitor one by one (this capacitor and rectifier bridge connection in series-parallel all can) and voltage stabilizing didoe again, this voltage minimum is greater than the absolute value of pinch-off voltage Vp; Grounded-grid; FET is operated in the constant current district, again through a voltage regulation capacitor voltage stabilizing, can obtain a preset the same direct voltage of more steady straight line from source electrode; The voltage stabilizing didoe parallelly connected with FET; Be that voltage stabilizing didoe is opened before FET runs into more than or equal to puncture voltage, with the burnout-proof FET, the sample resistance of input and voltage regulation capacitor can guarantee the absolute value of the minimum value of drain voltage greater than the folder terminal voltage; The D drain voltage that voltage stabilizing didoe can be guaranteed to take a sample operate as normal during more than or equal to puncture voltage is controlled in the voltage stabilizing value of voltage stabilizing didoe the drain voltage maximum; Can not want the capacitor of output when voltage stabilizing is less demanding yet; Behind source electrode, can add a variable resistance, can obtain adjustable dc voltage; When needing multivoltage output, can realize exporting a plurality of voltages at the several sample resistances of output serial or parallel connection; Also can use other FET, principle is similar, only need adjust slightly; This circuit structure is simple, and rectification effect is good, and thermal loss is few, can satisfy the requirement of precision instrument.
As above routine direct current regulation circuit; Can take a sample a voltage again through the rectifier bridge rectification from the input AC civil power with a fuse and a sample resistance; Be added on the voltage stabilizing didoe through a voltage regulation capacitor (this voltage regulation capacitor and rectifier bridge connection in series-parallel all can), the voltage wave floors that has sample resistance and voltage regulation capacitor to guarantee to be added on the voltage stabilizing didoe is the voltage stabilizing value of minimum value more than or equal to voltage stabilizing didoe; Be an exportable more steady direct voltage through a voltage regulation capacitor (also shouldn't this capacitor) again, output can add a variable resistor can obtain an adjustable voltage, only need the several sample resistances of serial or parallel connection to get final product when needing multivoltage output.
Above-mentioned two routine circuit all can a diode halfwave rectifier replace rectifier bridge, and effect is equally fine.
Go up two examples relatively,, only need to take a sample a voltage through a diode halfwave rectifier from the input AC civil power, can obtain a direct voltage that effect is general through an output capacitor with a fuse and sample resistance to the less demanding circuit of rectification; But the several sample resistances of connection in series-parallel can obtain a plurality of output voltages; Output adds a variable resistor can obtain an adjustable voltage.
The components and parts that above-mentioned several routine circuit need dispel the heat only need to place the ground that is prone to heat radiation can save fan the copper sheet increasing or the link sheet metal of printed circuit board (PCB); After the input sample resistance all can place rectifier bridge, the requirement that just improves rectifier bridge; This circuit does not need transformer, and the simple cost of circuit is low, is applicable to the various circuit that need rectification widely; Above-mentioned a few example promptly can be made into independent power supply, charger etc., and like charger for mobile phone, the power supply of telecomputer and various device instrument; Because simple in structure, can be integrated on the various circuit that need rectification, thereby remove independent power supply less on the mainboard like telecomputer etc., especially laptop computer etc. is easy to carry, not fragile.
The present invention has simple in structure, and cost is low, and thermal loss is few, can save fan, has promotional value.
Description of drawings
Fig. 1 is a circuit theory sketch map of the present invention.
Circuit theory sketch map when Fig. 2 is to use voltage stabilizing didoe.
Fig. 3 is the simplest direct current regulation circuit principle schematic.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3; The present invention is a kind of D.C. regulated power supply, and this power circuit is simple, utilizes the characteristic of N channel junction field-effect pipe; With input AC civil power Us sampling,, obtain a D drain voltage through individual voltage regulation capacitor C11 one by one (this capacitor and rectifier bridge connection in series-parallel all can) and voltage stabilizing didoe DW1 again through a fuse Rs1 and sample resistance R11 again through rectifier bridge DB11 rectification; This voltage minimum is greater than the absolute value of pinch-off voltage Vp, grid G ground connection, and FET is operated in the constant current district; From a source S voltage regulation capacitor C12 of warp voltage stabilizing again; Can obtain a preset the same direct voltage of more steady straight line, the voltage stabilizing didoe DW1 parallelly connected with FET is that voltage stabilizing didoe DW1 opens before FET runs into more than or equal to puncture voltage; With the burnout-proof FET; The minimum value that the sample resistance R11 of input and voltage regulation capacitor C11 can guarantee drain D voltage is greater than the absolute value of folder terminal voltage Vp, and the D drain voltage that voltage stabilizing didoe DW1 can guarantee to take a sample operate as normal during more than or equal to puncture voltage is controlled in the voltage stabilizing voltage stabilizing value of voltage stabilizing didoe DW1 the drain D voltage max; Can not want the capacitor C12 of output when voltage stabilizing is less demanding yet; After source S, can add a variable resistance RL1, can obtain adjustable dc voltage; When needing multivoltage output, can be at the several sample resistance R12 of output serial or parallel connection, R13, R14 can realize exporting a plurality of voltage U 11, U12, U13 can not want R14; Also can use other FET, principle is similar, only need adjust slightly; This circuit structure is simple, and rectification effect is good, and thermal loss is few, can satisfy the requirement of precision instrument.
As above routine direct current regulation circuit; Can be with a fuse Rs2 and sample resistance R21 from voltage of input AC civil power sampling; Again through rectifier bridge DB21 rectification; Be added on the voltage stabilizing didoe DW2 through a voltage regulation capacitor C21 (this voltage regulation capacitor and rectifier bridge connection in series-parallel all can), the voltage wave floors of being guaranteed to be added on the voltage stabilizing didoe DW2 by sample resistance R21 and voltage regulation capacitor C21 is the voltage stabilizing value of minimum value more than or equal to voltage stabilizing didoe DW2; Be an exportable more steady direct voltage through a voltage regulation capacitor C22 (also shouldn't this capacitor) again; Output can add a variable resistor RL2 can obtain an adjustable voltage, only needs the several sample resistance R23 of serial or parallel connection, R24 when needing multivoltage output; R22 can obtain U20; U21, U22, many voltages of U23.
Above-mentioned two routine circuit all can a diode halfwave rectifier replace rectifier bridge DB11, DB21, and effect is equally fine.
Go up two examples relatively; To the less demanding circuit of rectification; Only need to take a sample a voltage through a diode Dz halfwave rectifier from input AC civil power Us, can obtain a direct voltage U31 that effect is general through an output capacitor C31 with a fuse Rs3 and sample resistance R31; But the several sample resistances of connection in series-parallel can obtain a plurality of output voltages; Output adds a variable resistor RL3 can obtain an adjustable voltage.
The components and parts that above-mentioned several routine circuit need dispel the heat only need to place the ground that is prone to heat radiation can save fan the copper sheet increasing or the link sheet metal of printed circuit board (PCB); After the input sample resistance all can place rectifier bridge, the requirement that just improves rectifier bridge; This circuit does not need transformer, and the simple cost of circuit is low, is applicable to the various circuit that need rectification widely; Above-mentioned a few example promptly can be made into independent power supply, charger etc., and like charger for mobile phone, the power supply of telecomputer and various device instrument; Because simple in structure, can be integrated on the various circuit that need rectification, thereby remove independent power supply less on the mainboard like telecomputer etc., especially laptop computer etc. is easy to carry, not fragile.
Claims (5)
1. a D.C. regulated power supply is characterized in that this power circuit is simple, utilizes the characteristic of N channel junction field-effect pipe; Through a fuse and sample resistance the input AC civil power is taken a sample; Again through a rectifier bridge rectification, obtain a D drain voltage through individual voltage regulation capacitor one by one (this capacitor and rectifier bridge connection in series-parallel all can) and voltage stabilizing didoe again, this voltage minimum is greater than the absolute value of pinch-off voltage Vp; Grounded-grid; FET is operated in the constant current district, again through a voltage regulation capacitor voltage stabilizing, can obtain a preset the same direct voltage of more steady straight line from source electrode; The voltage stabilizing didoe parallelly connected with FET; Be that voltage stabilizing didoe is opened before FET runs into more than or equal to puncture voltage, with the burnout-proof FET, the sample resistance of input and voltage regulation capacitor can guarantee the absolute value of the minimum value of drain voltage greater than the folder terminal voltage; The D drain voltage that voltage stabilizing didoe can be guaranteed to take a sample operate as normal during more than or equal to puncture voltage is controlled in the voltage stabilizing value of voltage stabilizing didoe the drain voltage maximum; Can not want the capacitor of output when voltage stabilizing is less demanding yet; Behind source electrode, can add a variable resistance, can obtain adjustable dc voltage; When needing multivoltage output, can realize exporting a plurality of voltages at the several sample resistances of output serial or parallel connection; Also can use other FET, principle is similar, only need adjust slightly.
2. a kind of D.C. regulated power supply according to claim 1; It is characterized in that and to take a sample a voltage again through the rectifier bridge rectification with a fuse and a sample resistance from the input AC civil power; Be added on the voltage stabilizing didoe through a voltage regulation capacitor (this voltage regulation capacitor and rectifier bridge connection in series-parallel all can), the voltage wave floors that has sample resistance and voltage regulation capacitor to guarantee to be added on the voltage stabilizing didoe is the voltage stabilizing value of minimum value more than or equal to voltage stabilizing didoe; Be an exportable more steady direct voltage through a voltage regulation capacitor (also shouldn't this capacitor) again, output can add a variable resistor can obtain an adjustable voltage, only need the several sample resistances of serial or parallel connection to get final product when needing multivoltage output.
3. a kind of D.C. regulated power supply according to claim 12 is characterized in that above-mentioned two routine circuit all can a diode halfwave rectifier replace rectifier bridge, and effect is equally fine.
4. according to the described a kind of D.C. regulated power supply of claim 1.2.3; It is characterized in that going up relatively two examples; To the less demanding circuit of rectification; Only need to take a sample a voltage through a diode halfwave rectifier from the input AC civil power, can obtain a direct voltage that effect is general through an output capacitor with a fuse and sample resistance; But the several sample resistances of connection in series-parallel can obtain a plurality of output voltages; Output adds a variable resistor can obtain an adjustable voltage.
5. according to a kind of D.C. regulated power supply under the claim 1.2.34, it is characterized in that the components and parts that above-mentioned several routine circuit need dispel the heat, only need to place the ground that is prone to heat radiation can save fan the copper sheet increasing or the link sheet metal of printed circuit board (PCB); After the input sample resistance all can place rectifier bridge, the requirement that just improves rectifier bridge; This circuit does not need transformer, and the simple cost of circuit is low, is applicable to the various circuit that need rectification widely; Above-mentioned a few example promptly can be made into independent power supply, charger etc., and like charger for mobile phone, the power supply of telecomputer and various device instrument; Since simple in structure, can be integrated on the circuit of various need rectification.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104525151A CN102739076A (en) | 2011-04-09 | 2011-12-23 | Direct current stabilized voltage supply |
| PCT/CN2012/000284 WO2012139415A1 (en) | 2011-04-09 | 2012-03-07 | Dc voltage-stabilized power supply |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120115913 | 2011-04-09 | ||
| CN201120115913.X | 2011-04-09 | ||
| CN2011104525151A CN102739076A (en) | 2011-04-09 | 2011-12-23 | Direct current stabilized voltage supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102739076A true CN102739076A (en) | 2012-10-17 |
Family
ID=46994018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104525151A Pending CN102739076A (en) | 2011-04-09 | 2011-12-23 | Direct current stabilized voltage supply |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102739076A (en) |
| WO (1) | WO2012139415A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426399A (en) * | 2013-08-26 | 2015-03-18 | 罗姆股份有限公司 | Power delivery device, ac adapter and electronic apparatus |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6031750A (en) * | 1998-12-22 | 2000-02-29 | Leviton Manufacturing Co., Inc. | Constant current supply over a wide range of input voltages |
| CN2710125Y (en) * | 2004-05-18 | 2005-07-13 | 李洪根 | Multigang switch module |
| US20060113978A1 (en) * | 2004-11-26 | 2006-06-01 | Sony Corporation | Voltage regulator |
| CN101088059A (en) * | 2004-11-12 | 2007-12-12 | 模拟设备股份有限公司 | Battery charger system |
| CN201594876U (en) * | 2010-01-30 | 2010-09-29 | 青岛海信电器股份有限公司 | Interface power supply circuit and television with same |
| KR20110023870A (en) * | 2011-02-11 | 2011-03-08 | 서울반도체 주식회사 | Lighting system |
| CN102647835A (en) * | 2012-04-29 | 2012-08-22 | 广州南科集成电子有限公司 | Dimming circuit of narrow voltage light emitting diode (LED) lamp |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101236445A (en) * | 2007-01-30 | 2008-08-06 | 刘世安 | Power consumption free voltage stabilizing power source circuit |
| CN201312401Y (en) * | 2008-11-10 | 2009-09-16 | 广州南科集成电子有限公司 | Overcurrent-protection and overvoltage-protection constant-current source circuit |
-
2011
- 2011-12-23 CN CN2011104525151A patent/CN102739076A/en active Pending
-
2012
- 2012-03-07 WO PCT/CN2012/000284 patent/WO2012139415A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6031750A (en) * | 1998-12-22 | 2000-02-29 | Leviton Manufacturing Co., Inc. | Constant current supply over a wide range of input voltages |
| CN2710125Y (en) * | 2004-05-18 | 2005-07-13 | 李洪根 | Multigang switch module |
| CN101088059A (en) * | 2004-11-12 | 2007-12-12 | 模拟设备股份有限公司 | Battery charger system |
| US20060113978A1 (en) * | 2004-11-26 | 2006-06-01 | Sony Corporation | Voltage regulator |
| CN201594876U (en) * | 2010-01-30 | 2010-09-29 | 青岛海信电器股份有限公司 | Interface power supply circuit and television with same |
| KR20110023870A (en) * | 2011-02-11 | 2011-03-08 | 서울반도체 주식회사 | Lighting system |
| CN102647835A (en) * | 2012-04-29 | 2012-08-22 | 广州南科集成电子有限公司 | Dimming circuit of narrow voltage light emitting diode (LED) lamp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426399A (en) * | 2013-08-26 | 2015-03-18 | 罗姆股份有限公司 | Power delivery device, ac adapter and electronic apparatus |
| CN104426399B (en) * | 2013-08-26 | 2018-10-12 | 罗姆股份有限公司 | Power supply device, AC adapters and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012139415A1 (en) | 2012-10-18 |
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Application publication date: 20121017 |