CN106301026A - A kind of switching power unit - Google Patents
A kind of switching power unit Download PDFInfo
- Publication number
- CN106301026A CN106301026A CN201610798711.7A CN201610798711A CN106301026A CN 106301026 A CN106301026 A CN 106301026A CN 201610798711 A CN201610798711 A CN 201610798711A CN 106301026 A CN106301026 A CN 106301026A
- Authority
- CN
- China
- Prior art keywords
- switching power
- power unit
- commutator
- power supply
- transformator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
Abstract
The invention discloses a kind of switching power unit, described switching power unit uses monolateral flyback power supply circuit, a commutator to use core I C U1 UC3844AN to make pulse-width controller；Give the correct time not rising, provide power supply to a commutator by No. nine resistance；After self-oscillation is formed, the pulse of the first transformator octal after No. three varactor rectifications to a rectifier power supply；6th foot of a number commutator exports the different pulse signal of width to control number motor switch of power field effect pipe；Sampled signal takes from photoelectrical coupler；Access No. five varactors in the front end of photoelectrical coupler, change sampling voltage by fine setting so that output voltage changes.The present invention has the features such as output stable, voltage is adjustable, volume is little, stable performance circuit.It is 1.8A that the present invention exports electric current；Output voltage can set in the range of+15V～+5V；Input voltage is applicable to the power supply of AC90V 240V50/60Hz, so can be that electronic experiment measurement apparatus is powered, also can be used for the charging of 6V/12V storage battery.
Description
Technical field
The present invention relates to the technical field of Switching Power Supply, particularly relate to a kind of switching power unit.
Background technology
The instrument and equipment that experimental provision uses needs stable out-put supply, and usually needs carrying according to different experiments
For different burning voltages, but power supply on the market all can not meet demand.Therefore need one badly and have that output is stable, voltage can
Adjust, volume is little, the supply unit of stable performance circuit.
Summary of the invention
Based on above the deficiencies in the prior art, it is steady that technical problem solved by the invention is to provide one to have output
Determine, voltage is adjustable, volume is little, the supply unit of stable performance circuit.
In order to solve above-mentioned technical problem, the present invention provides a kind of switching power unit, and described switching power unit uses
Monolateral flyback power supply circuit, a commutator uses core I C-U1 UC3844AN to make pulse-width controller；Do not playing report
Time, provide power supply to a commutator by No. nine resistance；After self-oscillation is formed, the pulse warp of the first transformator octal
To a rectifier power supply after No. three varactor rectifications；6th foot of a number commutator exports the pulse signal that width is different
To control number motor switch of power field effect pipe；Sampled signal takes from photoelectrical coupler；Front termination at photoelectrical coupler
Enter No. five varactors, change sampling voltage by fine setting so that output voltage changes.
As the preferred implementation of technique scheme, the switching power unit that the embodiment of the present invention provides wraps further
Include the part or all of of following technical characteristic:
As the improvement of technique scheme, in one embodiment of the invention, the first transformator, use ER28x28
Ferrite core.
As the improvement of technique scheme, in one embodiment of the invention, a motor needs radiation fin, and one
Number varactor uses T0-220 encapsulation, also should install little heat sink additional.
As the improvement of technique scheme, in one embodiment of the invention, the second transformator uses φ 1Omm left
Right magnet ring.
As the improvement of technique scheme, in one embodiment of the invention, No. nine resistance are the insurance of PTC self-resetting type
Silk, available 5～10A, the one of 250VAC.
Compared with prior art, technical scheme have the advantages that the present invention have output stable, electric
Press the features such as adjustable, volume is little, stable performance circuit.This switching power unit output electric current is 1.8A；Output voltage can+
Set in the range of 15V～+5V；Input voltage is applicable to the power supply of AC90V 240V50/60Hz, so can be that electronic experiment is surveyed
Amount device is powered, and also can be used for the charging of 6V/12V storage battery.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, and in order to allow the above and other objects, features and advantages of the present invention can
Become apparent, below in conjunction with preferred embodiment, describe in detail as follows.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, the accompanying drawing of embodiment will be situated between simply below
Continue.
Fig. 1 is the switching power unit structural representation of the preferred embodiment of the present invention.
Detailed description of the invention
The following detailed description of the detailed description of the invention of the present invention, it, as the part of this specification, is come by embodiment
The principle of the present invention is described, other aspects of the present invention, feature and advantage thereof will be become apparent from by this detailed description.
As it is shown in figure 1, be the structural representation of preferred embodiment of the present invention switching power unit, Switching Power Supply of the present invention fills
Putting, described switching power unit uses monolateral flyback power supply circuit, a commutator U1 to use core I C-U1 UC3844AN
Make pulse-width controller, it is noted that the technique of painting of circuit diagram U1 employs sorcerer's method that in Protel, power supply and ground imply, and i.e. No. one whole
7th foot of stream device U1 meets power supply VCC, the 5th foot ground connection；Give the correct time not rising, carry to a commutator U1 by No. nine resistance R9
Power supply source；After self-oscillation is formed, the pulse of the first transformator T1 octal after No. three varactor D3 rectifications to one
Number commutator U1 powers；6th foot of a number commutator U1 exports the different pulse signal of width to control power field effect pipe one
Number motor M1 switch；Sampled signal takes from photoelectrical coupler U2；No. five transfigurations two have been accessed in the front end of photoelectrical coupler U2
Pole pipe D5, so output voltage is relatively stable, changes sampling voltage by fine setting R14 so that output voltage changes.First becomes
Depressor T1, uses ER28x28 ferrite core, and 7. 6. its armature winding one use φ 0, and the enamel-covered wire of 39mm is around 80 circles, and winding is 8.
10. one use jack per line line around 8 circles, and 5. 1. secondary windings one use 2 strands of the enamel-covered wire of+0.65mm around 12 circles, needs to add Cera Flava between primary and secondary
Cloth 2～3 layers are to ensure that insulation is good.A number motor M1 needs radiation fin, and a varactor D1 uses T0-220 encapsulation,
Also little heat sink should be installed additional.Whole circuit installs, and makes the Same Name of Ends of the first transformator T1 correctly, with regard to exportable electricity after energising
Pressure.Second transformator T2 uses the magnet ring of φ about 1Omm, arranges around 4～6 with high strength enamelled wire or with plastics AWG24～26 lines
Circle.No. nine resistance R9 are PTC self-resetting type electric fuse, available 5～10A, and the one of 250VAC.Photoelectrical coupler U2 is it should be noted that pin
Do not answer misconnection.
The present invention has the features such as output stable, voltage is adjustable, volume is little, stable performance circuit.This switching power unit
Output electric current is 1.8A；Output voltage can set in the range of+15V～+5V；Input voltage is applicable to AC90V 240V50/
The power supply of 60Hz, so can be that electronic experiment measurement apparatus is powered, also can be used for the charging of 6V/12V storage battery.
The above is the preferred embodiment of the present invention, certainly can not limit the right model of the present invention with this
Enclose, it is noted that for those skilled in the art, under the premise without departing from the principles of the invention, also may be used
To make some improvement and variation, these improve and variation is also considered as protection scope of the present invention.
Claims (5)
1. a switching power unit, it is characterised in that: the described switching power unit monolateral flyback power supply circuit of employing, No. one
Commutator (U1) uses core I C-U1 UC3844AN to make pulse-width controller；Give the correct time not rising, by No. nine resistance (R9)
Power supply is provided to a commutator (U1)；After self-oscillation is formed, the pulse of the first transformator (T1) octal is through No. three changes
After holding diode (D3) rectification, a commutator (U1) is powered；6th foot of a number commutator (U1) exports the arteries and veins that width is different
Rush signal to control number motor (M1) switch of power field effect pipe；Sampled signal takes from photoelectrical coupler (U2)；At photoelectricity
No. five varactors (D5) have been accessed in the front end of bonder (U2), change sampling voltage by fine setting (R14) so that exporting
Voltage changes.
2. switching power unit as claimed in claim 1, it is characterised in that: the first transformator (T1), use ER28x28 ferrum oxygen
Body magnetic core.
3. switching power unit as claimed in claim 1, it is characterised in that: a motor (M1) needs radiation fin, No. one
Varactor (D1) uses T0-220 encapsulation, also should install little heat sink additional.
4. switching power unit as claimed in claim 1, it is characterised in that: the second transformator (T2) uses φ about 1Omm
Magnet ring.
5. switching power unit as claimed in claim 1, it is characterised in that: No. nine resistance (R9) are PTC self-resetting type electric fuse,
Available 5～10A, the one of 250VAC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798711.7A CN106301026A (en) | 2016-08-31 | 2016-08-31 | A kind of switching power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798711.7A CN106301026A (en) | 2016-08-31 | 2016-08-31 | A kind of switching power unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106301026A true CN106301026A (en) | 2017-01-04 |
Family
ID=57711040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610798711.7A Pending CN106301026A (en) | 2016-08-31 | 2016-08-31 | A kind of switching power unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106301026A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324849A (en) * | 2011-09-28 | 2012-01-18 | 魏德米勒电联接国际贸易(上海)有限公司 | Flyback switching power supply circuit |
| CN202206311U (en) * | 2011-09-28 | 2012-04-25 | 魏德米勒电联接国际贸易(上海)有限公司 | Flyback switching power supply circuit |
| CN102480232A (en) * | 2010-11-30 | 2012-05-30 | 永济新时速电机电器有限责任公司 | Single-end flyback switching power supply and control device thereof |
| CN203482095U (en) * | 2013-09-26 | 2014-03-12 | 高永利 | Liquid crystal television set power supply module with remote control switch |
| US20140254215A1 (en) * | 2011-08-29 | 2014-09-11 | Power Systems Technologies Ltd. | Controller for a power converter and method of operating the same |
| US20140268924A1 (en) * | 2013-03-13 | 2014-09-18 | Richtek Technology Corporation | Control circuit for flyback power converter and calibration method thereof |
-
2016
- 2016-08-31 CN CN201610798711.7A patent/CN106301026A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480232A (en) * | 2010-11-30 | 2012-05-30 | 永济新时速电机电器有限责任公司 | Single-end flyback switching power supply and control device thereof |
| US20140254215A1 (en) * | 2011-08-29 | 2014-09-11 | Power Systems Technologies Ltd. | Controller for a power converter and method of operating the same |
| CN102324849A (en) * | 2011-09-28 | 2012-01-18 | 魏德米勒电联接国际贸易(上海)有限公司 | Flyback switching power supply circuit |
| CN202206311U (en) * | 2011-09-28 | 2012-04-25 | 魏德米勒电联接国际贸易(上海)有限公司 | Flyback switching power supply circuit |
| US20140268924A1 (en) * | 2013-03-13 | 2014-09-18 | Richtek Technology Corporation | Control circuit for flyback power converter and calibration method thereof |
| CN203482095U (en) * | 2013-09-26 | 2014-03-12 | 高永利 | Liquid crystal television set power supply module with remote control switch |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
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| RJ01 | Rejection of invention patent application after publication |