CN109980943A - A kind of two-way voltage-stabilizing Switching Power Supply of the voltage superposition based on magnetic amplifier - Google Patents
A kind of two-way voltage-stabilizing Switching Power Supply of the voltage superposition based on magnetic amplifier Download PDFInfo
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- CN109980943A CN109980943A CN201910277190.4A CN201910277190A CN109980943A CN 109980943 A CN109980943 A CN 109980943A CN 201910277190 A CN201910277190 A CN 201910277190A CN 109980943 A CN109980943 A CN 109980943A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims description 45
- 238000005070 sampling Methods 0.000 claims description 24
- 239000003990 capacitor Substances 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 11
- 238000002955 isolation Methods 0.000 claims description 11
- 230000000087 stabilizing effect Effects 0.000 abstract description 10
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009123 feedback regulation Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
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
- H02M1/00—Details of apparatus for conversion
- H02M1/16—Means for providing current step on switching, e.g. with saturable reactor
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
- Amplifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of two-way voltage-stabilizing Switching Power Supplies of voltage superposition based on magnetic amplifier, including main power conversion circuit, the first output circuit, the second output circuit, main road output is generated by the first output circuit, bypass output is generated by the first output circuit, the superposition of the second output circuit, first output circuit carries out pressure stabilizing using PWM control mode, second output circuit carries out pressure stabilizing using magnetic amplifier circuit, it ensure that the stabilization of main and auxiliary road output, in the case where main road is without load, bypass also can be exported normally.
Description
Technical field
The present invention relates to switch power technology fields, more particularly, to a kind of two-way of voltage superposition based on magnetic amplifier
Voltage-stabilizing switch power source.
Background technique
Currently, there are mainly three types of the Switching Power Supplies of single channel PWM pulse-width adjustment device control doubleway output:
The first: main road has feedback control loop, and bypass does not have feedback control loop, is exported by the way of following main road, exists in this way
Drawback is: bypass output voltage can be fluctuated with the variation of the power of main road output, or even the precision far beyond ± 1% is wanted
It asks；When main road output power is small, the case where bypass will appear band not dynamic load.
Second: main road has feedback control loop, and bypass does not have feedback control loop using magnetic amplifier adjustment pulsewidth come pressure stabilizing
Mode exports, and there is drawback in this way is: when main road output power is small, the case where bypass will appear band not dynamic load.
The third: prime is using fixed big accounting output, and then pole two-way all uses magnetic amplifier adjustment pulsewidth to divide
The mode of other pressure stabilizing exports, and there is drawback in this way is: when two-way output at light load magnetic amplifier to return magnetoelectricity stream big, thus cause
The loss of magnetic amplifier is big.That is, it is bigger to carry lighter magnetic amplifier loss.
In order to overcome the above problems, it would be highly desirable to which designing one kind can be realized doubleway output while obtaining pressure stabilizing, improving bypass
The Switching Power Supply of load capacity.
Summary of the invention
The object of the present invention is to provide a kind of two-way voltage-stabilizing Switching Power Supply of voltage superposition based on magnetic amplifier, main road is adopted
Feedback regulation is carried out with pwm circuit, bypass carries out feedback regulation using control circuit, improves load capacity, realizes that pressure stabilizing is defeated
Out.
Foregoing invention purpose of the invention is achieved by the following technical programs:
A kind of two-way voltage-stabilizing Switching Power Supply of the voltage superposition based on magnetic amplifier, including main power conversion circuit, the first output
Circuit, the second output circuit, control circuit, the first output circuit are anti-including the first current rectifying and wave filtering circuit, first voltage sampling
Current feed circuit, the input of the output connection first voltage sampling feedback circuit of the first current rectifying and wave filtering circuit；Second output circuit includes
Second current rectifying and wave filtering circuit, second voltage sampling feedback circuit, the output connection second voltage sampling of the second current rectifying and wave filtering circuit
The input of feed circuit；The main power conversion circuit is connect with the first output circuit, and main road output is by the first rectifying and wave-filtering electricity
Road generates, and bypass output is exported by the first current rectifying and wave filtering circuit is superimposed generation, the magnetic with what the second current rectifying and wave filtering circuit exported
The input of control circuit is connect with an output, the output of second voltage sampling feedback circuit of the main power conversion circuit,
It is exported connects with an input of second current rectifying and wave filtering circuit, and it is defeated to be used for according to bypass output voltage control second
The output of circuit out.
The present invention is further arranged to: further including isolation circuit, pwm circuit, main power control circuit, the isolation electricity
Road, pwm circuit, main power control circuit are sequentially connected, and the input of the isolation circuit connects first voltage sampling feedback circuit
Output, the output of the main power control circuit connects the input of the main power conversion circuit.
The present invention is further arranged to: the control circuit includes control circuit, magnetic amplifier, the control circuit
Input connects the output of the second voltage sampling feedback circuit, and the output of the control circuit connects the defeated of the magnetic amplifier
Enter.
The present invention is further arranged to: the control circuit includes PNP triode, the base stage connection of the PNP triode
The output of the second voltage sampling feedback circuit, emitter connect the just defeated of second output circuit by first resistor
Out, collector is connected by the anode of second resistance and first diode, and the cathode of first diode connects the magnetic amplification
Device returns magnetic input.
The present invention is further arranged to: one of the input connection main power conversion circuit of the magnetic amplifier is defeated
Out, an input of the second output circuit of output connection.
The present invention is further arranged to: first voltage sampling feedback circuit includes the first sample circuit, first error amplification
Circuit, first sample circuit are combined including the first series resistance, and the combination of the first series resistance is attempted by first rectification
Between two output ends of filter circuit, the first junction of the first series resistance combination and first error amplification electricity
One input terminal on road connects, another input terminal of the first error amplifying circuit connects given threshold end.
The present invention is further arranged to: second voltage sampling feedback circuit and the first voltage sampling feedback circuit structure
It is identical.
The present invention is further arranged to: the main power conversion circuit, including transformer comprising a primary coil,
Two secondary coils, the both ends of the first secondary coil are separately connected two input terminals of the first output circuit, the second secondary coil
Both ends be separately connected two input terminals of the second output circuit.
The present invention is further arranged to: first current rectifying and wave filtering circuit includes half-wave rectifying circuit, rectification coil, rectification
Capacitor, the half-wave rectifying circuit are separately connected the both ends of the first secondary coil, and output is connected described whole by rectification coil
One end that galvanic electricity is held, the other end of the commutation capacitor connect one end of first output circuit.
The present invention is further arranged to: second current rectifying and wave filtering circuit and the first current rectifying and wave filtering circuit structure phase
Together.
Compared with prior art, advantageous effects of the invention are as follows:
1. the application ensure that the voltage stability of main and auxiliary road output by the way that control circuit is arranged in bypass；
2. further, the control circuit in bypass, in the case where realizing main road without load, bypass also can be exported normally；
Solves the problems, such as cross regulation rate.
3. further, main road using pwm circuit carry out feedback control, main and auxiliary road all be lightly loaded or zero load situation,
Main road turns prime duty ratio down, reduces magnetic amplifier loss.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of a specific embodiment of the invention.
Fig. 2 is the structural schematic diagram of a specific embodiment of the invention.
Fig. 3 is the electrical block diagram of a specific embodiment of the invention.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Specific embodiment one
A kind of two-way voltage-stabilizing Switching Power Supply of voltage superposition based on magnetic amplifier of the application, as shown in Figure 1, 2, including main function
Rate translation circuit, the first output circuit, the second output circuit, control circuit, the first output circuit include 1 electricity of rectifying and wave-filtering
Road, voltage sample feed circuit 1, the input of the output connection voltage sample feed circuit 1 of 1 circuit of rectifying and wave-filtering；Second output
Circuit includes 2 circuit of rectifying and wave-filtering, voltage sample feed circuit 2, the output connection voltage sample feedback electricity of 2 circuit of rectifying and wave-filtering
The input on road 2；Main power conversion circuit is connect with the first, second output circuit, and main road output is generated by 1 circuit of rectifying and wave-filtering,
That is the electricity output between DC1+ and DC1-, bypass output are superimposed by 1 circuit output of rectifying and wave-filtering with the output of 2 circuit of rectifying and wave-filtering
It generates, that is, the cathode DC2- of 2 circuit of rectifying and wave-filtering is connect with the positive DC+ of 1 circuit of rectifying and wave-filtering, and 2 circuit of rectifying and wave-filtering is just
Pole DC2+ is the anode of bypass output, and the cathode DC1- of 1 circuit of rectifying and wave-filtering is the cathode of bypass output.
The output of first output circuit is the output of 1 circuit of rectifying and wave-filtering, and the output of the second output circuit is rectifying and wave-filtering 2
The output of circuit.
The input of control circuit and an output, the output of voltage sample feed circuit 2 of main power conversion circuit connect
It connects, output and an input of 2 circuit of rectifying and wave-filtering connect, for according to the second output circuit of bypass output voltage control
Output, that is, the output of 2 circuit of rectifying and wave-filtering.
Preferably, the two-way voltage-stabilizing Switching Power Supply of a kind of voltage superposition based on magnetic amplifier of the application, further include every
From circuit, pwm circuit, main power control circuit, isolation circuit, pwm circuit, main power control circuit are sequentially connected, isolation electricity
The output of the input connection voltage sample feed circuit 1 on road, the output of main power control circuit connect main power conversion circuit
Input.
The output of the input connection current rectifying and wave filtering circuit of main power control circuit, to obtain working power.
Specific embodiment two
The two-way voltage-stabilizing Switching Power Supply of a kind of voltage superposition based on magnetic amplifier of the application, as shown in figure 3, control circuit
Including control circuit, magnetic amplifier L1, the input of control circuit connects the output of voltage sample feed circuit 2, control circuit
Output connection magnetic amplifier returns magnetic input.
Specifically, control circuit includes PNP triode, and the base stage of PNP triode connects second voltage sampling feedback circuit 2
Output, emitter passes through resistance R4 and diode by the positive output of resistance R2 connection current rectifying and wave filtering circuit 2, collector
The anode connection of D1, the cathode connection magnetic amplifier L1's of diode D1 returns magnetic input.
The input of magnetic amplifier L1 connects an output of main power conversion circuit, output connection current rectifying and wave filtering circuit 2
One input.
Main power conversion circuit, including transformer T1 comprising a primary coil, two secondary coils, the first secondary side
The both ends of coil are separately connected two input terminals of the first output circuit, and one end of the second secondary coil connects the second output circuit
An input terminal, the other end pass through control circuit connect the second output circuit another input terminal.
Current rectifying and wave filtering circuit 1 includes half-wave rectifying circuit, rectification coil, commutation capacitor, half-wave rectifying circuit connection first
One end of secondary coil, output connect one end of the commutation capacitor, the other end of the commutation capacitor by rectification coil
Connect one end of first output circuit.
Specifically, half-wave rectifying circuit includes rectifier diode D3A, and anode is connected to one end of the first secondary coil,
Its cathode is connected with one end of rectification coil L3, and the other end of rectification coil L3 is connect with one end of commutation capacitor C4, C5 simultaneously,
For the positive output end of the first output circuit, the other end of commutation capacitor C4, C5 are connected with the other end of the first secondary coil, are the
The negative output terminal of one output circuit, parallel output resistance R7 between the both ends of commutation capacitor C4, C5.
Diode D3B is freewheeling diode, and cathode connects the cathode of rectifier diode D3A, and anode is connected to first
The other end of secondary coil.
The structure of current rectifying and wave filtering circuit 2 is identical as the structure of current rectifying and wave filtering circuit 1, specifically, including rectifier diode
D2A, wherein the output end of the anode connection magnetic amplifier of rectifier diode D2A, the input terminal of magnetic amplifier are connected to the second pair
One end of sideline circle, the anode of sustained diode 2B are connected to the other end of the second secondary coil；Rectifier diode D2A, afterflow
The cathode of diode D2B links together to be connected with one end of rectification coil L2 again, the other end of rectification coil L2 simultaneously with it is whole
Galvanic electricity holds one end connection of C1, C2, is the positive output end of the second output circuit, the other end and diode of commutation capacitor C1, C2
The anode of D2B is connected, and is the negative output terminal of the second output circuit, parallel output resistance R6 between the both ends of commutation capacitor C1, C2.
The both ends of main road output are respectively the both ends of the first output circuit.
The both ends of bypass output are the negative output terminal of the positive output end of the second output circuit, the first output circuit respectively；Its
In, the negative output terminal of the second output circuit and the positive output end of the first output circuit link together, and form voltage superposition.
Voltage sample feed circuit 1 include the first sample circuit, first error amplifying circuit, the first sample circuit include by
The series resistance combination of resistance R8, R10, R11 composition, this series resistance combine two output ends for being attempted by the first output circuit
Between, i.e., in parallel with output resistance R7, the combination of this series resistance can also be connected by two resistance to be formed.
One end of resistance R8 connects the positive output end of the first output circuit, and one end of resistance R11 connects the first output circuit
Negative output terminal, resistance R10, R11 junction connection error amplifier EA2 an input terminal, error amplifier EA2's is another
Input terminal connects given threshold end, and output end connects an input terminal of isolation circuit.
Specifically, the positive input terminal of error amplifier EA2 connects given threshold end, and output end connects the negative of isolation circuit
Input terminal.
Isolation circuit includes photoisolator, and the positive input terminal of the first output circuit is by connecting photoelectricity after current-limiting resistance R9
The positive input terminal of isolator.
Main power control circuit includes power tube.
The input of the output end connection pwm circuit of photoisolator, the control electrode of the output connection power tube of pwm circuit,
One end of the input terminal connection primary coil of power tube, the ground terminal of the output end connection current rectifying and wave filtering circuit of power tube.
Current rectifying and wave filtering circuit is used to input AC being converted to direct current.
2 structure of voltage sample feed circuit is identical as 1 structure of voltage sample feed circuit, including by resistance R1, R3, R5 group
At series resistance combination, this series resistance combination be attempted by between two output ends of the second output circuit, i.e., with output electricity
It is in parallel to hinder R6, the combination of this series resistance can also be connected by two resistance to be formed.
One end of resistance R1 connects the positive output end of the second output circuit, and one end of resistance R5 connects the second output circuit
Negative output terminal, an input terminal of the junction connection error amplifier EA1 of resistance R3, R5, another input of error amplifier EA1
End connection given threshold end, output end connect the input of control circuit.
The working principle of the application Switching Power Supply is as follows:
For the sake of for ease of description, if main road output voltage is 5V, bypass output voltage is 12V, i.e., the first output circuit is defeated
Voltage is 5V out, and the output voltage of the second output circuit is 7V.
Front stage circuits are common single-end ortho-exciting switch power supply line structures.
The first output circuit of rear class filters output+5V through over commutation afterflow, then passes through error amplifier EA2 by resistance sampling
And then adjust PWM pulse-width adjustment device and adjust main power tube duty ratio, stablize+5V output.
The second output circuit of rear class filters output+7V through over commutation afterflow, and it is defeated to second that series resistance combines R1, R3, R5
Circuit is sampled out, is amplified by error amplifier EA1, and then changes triode V1 collector current, amplifies magnetic
Device magnetic core resets, while realizing the pressure stabilizing in network pressure and load variation.
When the second output circuit output voltage increases, error amplifier EA1 output decline, triode V1 collector current
It increases, increases the resetting current of magnetic amplifier L1, at this moment output voltage drops to normal value.
When the second output circuit output voltage reduces, error amplifier EA1 output rises, triode V1 collector current
Reduce, reduces the resetting current of magnetic amplifier, at this moment output voltage is raised to normal value.
The Switching Power Supply of the application exports all at light load when two-way, and main road can reduce duty ratio, and then reduce magnetic amplification
The loss of device.When main road band heavy duty bypass at light load, bypass is by magnetic amplifier pressure stabilizing, so that output will not be because of main road power
Change and changes.When main road is lightly loaded bypass when overloaded, because the 12V of bypass is by the superimposed gained of 5V, 7V, main road also can
Certain duty ratio is opened, so that bypass is individually with the capability improving carried.When two-way is all that when overloaded, main road can beat duty ratio
It opens, by error amplifier EA2 come pressure stabilizing, and bypass then by the electric current of error amplifier EA1 control triode V1 and then controls magnetic
The magnetoelectricity stream that returns of amplifier L1 carrys out pressure stabilizing.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of two-way voltage-stabilizing Switching Power Supply of the voltage superposition based on magnetic amplifier, including it is main power conversion circuit, first defeated
Circuit, the second output circuit out, the first output circuit include the first current rectifying and wave filtering circuit, first voltage sampling feedback circuit, the
The input of the output connection first voltage sampling feedback circuit of one current rectifying and wave filtering circuit；Second output circuit includes the second rectification filter
Wave circuit, second voltage sampling feedback circuit, the output connection second voltage sampling feedback circuit of the second current rectifying and wave filtering circuit
Input；The main power conversion circuit is connect with the first output circuit, and main road output is generated by the first current rectifying and wave filtering circuit, bypass
Output is exported by the first current rectifying and wave filtering circuit and is superimposed generation with what the second current rectifying and wave filtering circuit exported, it is characterised in that: further includes
Control circuit, the input of the control circuit and an output, the second voltage sampling of the main power conversion circuit are anti-
The output of current feed circuit connects, and output and an input of second current rectifying and wave filtering circuit connect, for being exported according to bypass
Voltage controls the output of second output circuit.
2. two-way voltage-stabilizing Switching Power Supply according to claim 1, it is characterised in that: further include isolation circuit, pwm circuit,
Main power control circuit, the isolation circuit, pwm circuit, main power control circuit are sequentially connected, the input of the isolation circuit
The output of first voltage sampling feedback circuit is connected, the output of the main power control circuit connects the main power conversion circuit
Input.
3. two-way voltage-stabilizing Switching Power Supply according to claim 1, it is characterised in that: the control circuit includes control electricity
Road, magnetic amplifier, the input of the control circuit connect the output of the second voltage sampling feedback circuit, the control circuit
Output connect the input of the magnetic amplifier.
4. two-way voltage-stabilizing Switching Power Supply according to claim 3, it is characterised in that: the control circuit includes tri- pole PNP
Pipe, the base stage of the PNP triode connect the output of the second voltage sampling feedback circuit, and emitter passes through first resistor
The positive output of second output circuit is connected, collector is connected by the anode of second resistance and first diode, and first
The magnetic that returns that the cathode of diode connects the magnetic amplifier inputs.
5. two-way voltage-stabilizing Switching Power Supply according to claim 3, it is characterised in that: the input of the magnetic amplifier connects institute
State an output of main power conversion circuit, an input of output the second output circuit of connection.
6. two-way voltage-stabilizing Switching Power Supply according to claim 1, it is characterised in that: first voltage sampling feedback circuit includes
First sample circuit, first error amplifying circuit, first sample circuit are combined including the first series resistance, the first series electrical
Resistance combination is attempted by between two output ends of first current rectifying and wave filtering circuit, and the first of the first series resistance combination connects
It meets place to connect with an input terminal of the first error amplifying circuit, another input terminal of the first error amplifying circuit
Connect given threshold end.
7. two-way voltage-stabilizing Switching Power Supply according to claim 1, it is characterised in that: second voltage sampling feedback circuit and institute
It is identical to state first voltage sampling feedback circuit structure.
8. two-way voltage-stabilizing Switching Power Supply according to claim 1, it is characterised in that: the main power conversion circuit, including
Transformer a comprising primary coil, two secondary coils, the both ends of the first secondary coil are separately connected the first output circuit
Two input terminals, one end of the second secondary coil connects an input terminal of the second output circuit, and the other end passes through magnetic control
Another input terminal of the second output circuit of circuit connection.
9. two-way voltage-stabilizing Switching Power Supply according to claim 1, it is characterised in that: first current rectifying and wave filtering circuit includes
First half-wave rectifying circuit, the first rectification coil, the first commutation capacitor, the first half-wave rectifying circuit input terminal connection magnetic are put
The output end of big device, output connect one end of first commutation capacitor, first rectified current by the first rectification coil
The other end of appearance connects the other end of first secondary coil.
10. two-way voltage-stabilizing Switching Power Supply according to claim 1, it is characterised in that: second current rectifying and wave filtering circuit with
The first current rectifying and wave filtering circuit structure is identical, including the second half-wave rectifying circuit, the second rectification coil, the second commutation capacitor,
The second half-wave rectifying circuit input terminal connects one end of the second secondary coil, and output connects institute by the second rectification coil
One end of the second commutation capacitor is stated, the other end of second commutation capacitor connects the other end of first secondary coil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910277190.4A CN109980943A (en) | 2019-04-08 | 2019-04-08 | A kind of two-way voltage-stabilizing Switching Power Supply of the voltage superposition based on magnetic amplifier |
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| CN201910277190.4A CN109980943A (en) | 2019-04-08 | 2019-04-08 | A kind of two-way voltage-stabilizing Switching Power Supply of the voltage superposition based on magnetic amplifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364296A (en) * | 2021-05-14 | 2021-09-07 | 长城电源技术有限公司 | Switching power supply circuit and power supply device |
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| CN102377347A (en) * | 2011-10-17 | 2012-03-14 | 广州三晶电气有限公司 | Flyback converter for implementing auxiliary output voltage control by using triode and control method |
| FR3025671A1 (en) * | 2014-09-09 | 2016-03-11 | Valeo Equip Electr Moteur | METHOD FOR CONTROLLING MULTI-OUTPUT VOLTAGE TRANSFORMER CONTINUOUS CONTINUOUS POWER SUPPLY, CORRESPONDING POWER SUPPLY AND USE |
| CN204376529U (en) * | 2015-01-30 | 2015-06-03 | 何用辉 | A kind of intelligent distributed distribution DC power supply |
| CN105429488A (en) * | 2015-12-16 | 2016-03-23 | 中国电子科技集团公司第四十三研究所 | Magnetic amplifier based switch power supply self-feedback circuit and control method therefor |
| CN209642552U (en) * | 2019-04-08 | 2019-11-15 | 北京承力电源有限公司 | A kind of two-way voltage-stabilizing Switching Power Supply of the voltage superposition based on magnetic amplifier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113364296A (en) * | 2021-05-14 | 2021-09-07 | 长城电源技术有限公司 | Switching power supply circuit and power supply device |
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