CN207573251U - A kind of secondary power supply circuit for electromagnetic interference equipment - Google Patents
A kind of secondary power supply circuit for electromagnetic interference equipment Download PDFInfo
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- CN207573251U CN207573251U CN201721375764.4U CN201721375764U CN207573251U CN 207573251 U CN207573251 U CN 207573251U CN 201721375764 U CN201721375764 U CN 201721375764U CN 207573251 U CN207573251 U CN 207573251U
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Abstract
The utility model discloses a kind of secondary power supply circuits for electromagnetic interference equipment in integrated circuit fields, including AC/DC power modules, exchange input filter circuit, direct current output filter circuit, telemetered signal, parallel signal terminal, voltage-regulating circuit, soft start, protect circuit, single-chip microcomputer signal control circuit, exchange input filter circuit, direct current output filter circuit, single-chip microcomputer signal control circuit, soft start, protection circuit is both connected on AC/DC power modules, voltage-regulating circuit is connected between AC/DC power modules and direct current output filter circuit, telemetered signal, parallel signal terminal is connected between direct current output filter circuit and voltage-regulating circuit, the utility model circuit structure is simple, improve circuit debugging, efficiency during repair；Available in all kinds of electronic components.
Description
Technical field
The utility model is related to a kind of power circuit, more particularly to a kind of secondary power supply circuit.
Background technology
The power supply of electromagnetic interference equipment needs voltage type more, such as：28V、12V、5V；The electric current of various types voltage is not yet
Equilibrium, such as：DC28V/20A、 DC 12V/2A、 DC 5V/5A；Power volume is also less and less, and the quality requirements of power supply are more next
It is higher.
Present power supply uses Switching Power Supply form more.Switching Power Supply extensive use, there are many circuit form, and power management is multiple
It is miscellaneous.This brings debugging and repair inconvenient to designer.Many electrical appliances use switching tube, make the wave distortion of power grid, electromagnetism
The efficiency of the power supply of jamming equipment is low.The filtering process of the power supply of electromagnetic interference equipment is bad, and electromagnetic interference is big, influences electromagnetism and does
Disturb the performance of equipment.
Utility model content
The purpose of this utility model is to provide a kind of secondary power supply circuit for electromagnetic interference equipment, purification input power grid
Interference, improve efficiency, to greatest extent inhibit power supply conduction and radiation interference.
What the purpose of this utility model was realized in：A kind of secondary power supply circuit for electromagnetic interference equipment, including：
AC/DC power modules, to convert alternating current to direct current；
Input filter circuit is exchanged, to realize that level-one filters, while also carries out overcurrent protection；
Direct current output filter circuit, to realize that level-one filters；
Telemetered signal, parallel signal terminal, wherein telemetered signal terminal are compensated to send telemetered signal from power supply
For leading-out terminal to the line pressure drop of face terminals, parallel signal terminal is used in parallel to realize polylith AC/DC power modules；
Voltage-regulating circuit, reaching adjusting output voltage needs voltage；
To inhibit to input inrush current when opening, protection is electric for soft start, protection circuit, wherein soft starting circuit
It uses so that boost voltage is smooth on road；
Single-chip microcomputer signal control circuit, to carry out remote control AC/DC power modules；
The exchange input filter circuit, direct current output filter circuit, single-chip microcomputer signal control circuit, soft start, protection
Circuit is both connected on AC/DC power modules, and the voltage-regulating circuit is connected to AC/DC power modules and is filtered with direct current output
Between circuit, the telemetered signal, parallel signal terminal are connected between direct current output filter circuit and voltage-regulating circuit.
Compared with prior art, the beneficial effects of the utility model are, the utility model circuit structure is simple, improves
Efficiency when circuit debugging, repair；By the way that telemetering terminal is set to coordinate voltage-regulating circuit the utility model in circuit
The DC voltage of output is more stablized；During by setting soft start, protection circuit utility model works in circuit more
Add safe and reliable；AC/DC power modules in the utility model is controlled to work by single-chip microcomputer signal control circuit so that this practicality
Novel work control is more convenient.The utility model can be used in all kinds of electronic components.
As the further restriction of the utility model, the exchange input filter circuit is low-pass filter, by common mode electricity
Feel L1, common mode capacitance C2, common mode capacitance C3, differential mode capacitor C1 and differential mode capacitor C4 compositions, the common mode inductance L1 to select altogether
Mould choke coil, the preceding termination alternating current 220V power input terminal XB1-XB2 of the common mode choke are rear to terminate AC/DC power supply moulds
Block power input, differential mode capacitor C1 short circuits are between the two poles of the earth of common mode choke front end, and differential mode capacitor C4 short circuits are in common mode chokes
It encloses between the two poles of the earth of rear end, the common mode capacitance C2 of series connection, common mode capacitance C3 short circuits are between the two poles of the earth of common mode choke rear end, common mode electricity
Hold the electrode points ground connection between C2, common mode capacitance C3.
As the further restriction of the utility model, the direct current input filter circuit is low-pass filter, by common mode electricity
Hold C9, common mode capacitance C10, differential mode capacitor C11, differential mode capacitor C12 compositions, common mode capacitance C9, common mode capacitance C10 are simultaneously connected in
Between AC/DC power module power output ends the two poles of the earth, differential mode capacitor C11, differential mode capacitor C12 series connection are followed by AC/DC power supply moulds
Between block power output end the two poles of the earth, the electrode points ground connection between differential mode capacitor C11, differential mode capacitor C12, the differential mode capacitor of series connection
C11, differential mode capacitor C12 rear ends are as the sub- XB5-XB6 of DC power output end.
As the further restriction of the utility model, distance electricity between described AC/DC power modules power output end the two poles of the earth
Position is connected to the ceramic condenser C8 for lowering output spike noise voltage within source output terminal 50mm.
As the further restriction of the utility model, the common mode capacitance C9, common mode capacitance C10 are electrolytic capacitor,
Differential mode capacitor C11, differential mode capacitor C12 are ceramic capacitor or thin gland capacitor.
As the further restriction of the utility model, the telemetered signal, parallel signal terminal include in parallel two groups and connect
Line terminals XP2, XP3, two groups of wire connection terminal XP2, XP3 structures are identical, comprising four road signal input parts, respectively telemetering end ,+
S ends ,-S ends, PC ends, wherein, to acquire load input voltage pressure drop ,+S ends ,-S ends are electric from AC/DC to compensate at telemetering end
The leading-out terminal of source module to the line pressure drop of face terminals, with for polylith AC/DC power modules parallel combination used by PC ends.Telemetering
Hold voltage of the function for the loss on compensating wire.When leading-out terminal and load（Electrical equipment）Between conducting wire it is long, electricity
Stream then generates loss voltage by the conducting wire（The voltage of this section lead）, then load input voltage reduction；Telemetering terminal samples
The voltage by inside modules error amplifier, adjusts output voltage, compensates the loss voltage.
As the further restriction of the utility model, the voltage-regulating circuit includes being connected to AC/DC power modules
The potentiometer RP1 on resistance R4 and telemetering end on TRIM feet, wherein TRIM feet connect XB6 terminals through resistance R4, and telemetering end is through electricity
Position device RP1 meets XB5.
As the further restriction of the utility model, the soft start, protection circuit include inhibiting to input defeated when opening
Enter the outer connecting resistance of surge current, the outer connecting resistance includes the power being connected between AC/DC power module R feet and+BC feet
Resistance R1 and fuse F2 is connected to capacitance C16 in parallel, capacitance between the+BC feet of the AC/DC power modules and-BC feet
C17。
As the further restriction of the utility model, the single-chip microcomputer signal control circuit include be connected to control terminal and
Optocoupler between AC/DC power modules.
As the further restriction of the utility model, the AC/DC power modules select PFE1000F-28 power supply chips.
Description of the drawings
Fig. 1 the utility model circuit diagrams.
Specific embodiment
The utility model is described further with reference to specific embodiment.
A kind of secondary power supply circuit for electromagnetic interference equipment as shown in Figure 1, including：
AC/DC power modules, to convert alternating current to direct current, AC/DC power modules select PFE1000F-28 electricity
Source chip；
Input filter circuit is exchanged, to realize that level-one filters, while also carries out overcurrent protection, exchanges input filter circuit
For low-pass filter, it is made of common mode inductance L1, common mode capacitance C2, common mode capacitance C3, differential mode capacitor C1 and differential mode capacitor C4,
Common mode inductance L1 selects common mode choke, and the preceding termination alternating current 220V power input terminal XB1-XB2 of common mode choke is rear to terminate
The AC of AC/DC power modules（L）And AC（N）Foot, differential mode capacitor C1 short circuits are between the two poles of the earth of common mode choke front end, differential mode capacitor
C4 short circuits are between the two poles of the earth of common mode choke rear end, and the common mode capacitance C2 of series connection, common mode capacitance C3 short circuits are after common mode choke
Between holding the two poles of the earth, the electrode points ground connection between common mode capacitance C2, common mode capacitance C3；
Direct current output filter circuit, to realize that level-one filters, direct current input filter circuit is low-pass filter, by common mode
Capacitance C9, common mode capacitance C10, differential mode capacitor C11, differential mode capacitor C12 compositions, common mode capacitance C9, common mode capacitance C10 are simultaneously connected in
AC/DC power module power output ends the two poles of the earth（+ V feet ,-V feet）Between, differential mode capacitor C11, differential mode capacitor C12 series connection are followed by
Between AC/DC power module power output ends the two poles of the earth, the electrode points ground connection between differential mode capacitor C11, differential mode capacitor C12, series connection
Differential mode capacitor C11, differential mode capacitor C12 rear ends as the sub- XB5-XB6 of DC power output end, AC/DC power module power supplys are defeated
Position is connected to the ceramic condenser C8 for lowering output spike noise voltage within power output end 50mm between outlet the two poles of the earth, altogether
Mould capacitance C9, common mode capacitance C10 are electrolytic capacitor, differential mode capacitor C11, differential mode capacitor C12 be ceramic capacitor or
Thin gland capacitor；
Telemetered signal, parallel signal terminal, wherein telemetered signal terminal are compensated to send telemetered signal from power supply
Leading-out terminal is to the line pressure drop of face terminals, and parallel signal terminal is to used in parallel, telemetering of realizing polylith AC/DC power modules
Signal, parallel signal terminal include two groups of wire connection terminals XP2, XP3 in parallel, and two groups of wire connection terminal XP2, XP3 structures are identical,
Comprising four road signal input parts, respectively telemetering end ,+S ends ,-S ends, PC ends, wherein, telemetering end is electric to acquire load input
Press pressure drop ,+S ends ,-S ends to compensate the line pressure drop from the leading-out terminal of AC/DC power modules to face terminals, PC ends to
For polylith AC/DC power module parallel combinations, the telemetering end of wherein XP2 meets the+S of AC/DC power modules through potentiometer RP1
Foot, while XB5 also is met through capacitance C13 ,+S terminates the+S feet of AC/DC power modules, while also connects XB5 ,-S terminations through capacitance C13
- S the feet of AC/DC power modules, PC ends connect the PC feet of AC/DC power modules through resistance R5；
Voltage-regulating circuit, reaching adjusting output voltage needs voltage, and voltage-regulating circuit includes being connected to AC/DC
The potentiometer RP1 on resistance R4 and telemetering end on power module TRIM feet, wherein TRIM feet connect XB6 terminals through resistance R4, distant
It surveys end and meets XB5 through potentiometer RP1, short circuit has capacitance C15, TRIM foot through string between the-S feet of AC/DC power modules and TRIM feet
Resistance R4, the capacitance C14 of connection connect XB6 terminals, and the electrode points between resistance R4, capacitance C14 connect the-S feet of AC/DC power modules；
To inhibit to input inrush current when opening, protection is electric for soft start, protection circuit, wherein soft starting circuit
Road is used so that boost voltage is smooth, and soft start, protection circuit include inhibiting to input the external of inrush current when opening
Resistance, outer connecting resistance include the power resistor R1 and fuse F2, AC/ that are connected between AC/DC power module R feet and+BC feet
The R feet of capacitance C16 in parallel, capacitance C17, AC/DC power module are connected between+BC the feet of DC power module and-BC feet through string
Fuse F2, the power resistor R1 of connection connect XB3 terminals, and-BC the feet of AC/DC power modules connect XB4 terminals, AC/DC power modules
+ BC feet connect XB3 terminals, short circuit is gone back between+BC feet and-BC feet has capacitance C5 in parallel and capacitance C6, R foot to be connected with+BC feet
It connects ,-BC feet are also grounded through capacitance C7；
Single-chip microcomputer signal control circuit, to carry out remote control AC/DC power modules, single-chip microcomputer signal control circuit packet
Include the optocoupler being connected between control terminal and AC/DC power modules；
Exchange input filter circuit, direct current output filter circuit, single-chip microcomputer signal control circuit, soft start, protection circuit
Be both connected on AC/DC power modules, voltage-regulating circuit be connected to AC/DC power modules and direct current output filter circuit it
Between, telemetered signal, parallel signal terminal are connected between direct current output filter circuit and voltage-regulating circuit.
During utility model works, normal alternating voltage is input to the input terminal of the component, when external microcontroller is defeated
Going out high level, then optocoupler is connected, the module conducting of component, soft starting circuit work, and power tube is opened, and has direct voltage output,
Since XP2 (XP3)-anode telemetering connects the output voltage anode of power supply, XP2 (XP3) -- S connects the output voltage negative terminal of power supply；Then
RP1 potentiometers are adjusted, it is+28V to make output voltage.When loaded work piece, telemetering compensates line loss voltage automatically；By filtering again
Processing, power supply meet electromagnetic interference equipment requirement；Upon closing, as long as external microcontroller is exported low level.
It is low-pass filter that input filter circuit is exchanged in the present embodiment, is the level-one filtering of power module exchange input,
The also fusing of overcurrent protection, the ripple current that filter capacitor allows, for electromagnetic compatibility, are gripped not less than 3A using common mode simultaneously
Streamline circle, more in use, needed on every platform respectively it is external, because there is ripple current to pass through, select capacitor when, must confirm electricity
Container allows maximum strand wave current value.
Direct current output filter circuit is low-pass filter, is the level-one filtering of power module direct current output, it is by common mode electricity
Hold and differential mode capacitor forms；Since direct current output is higher for frequency, so using capacitor filtering, without with inductance；Electrolysis electricity
The capacity of appearance is bigger（2 1000uF）, it is suitble to than relatively low temperature（Less than -20 degree）；In order to lower output spike noise
Voltage, between+V terminals and-V terminals, the external ceramic capacitor C8 away from the position within output terminal 50mm；In order to which electromagnetism is simultaneous
Hold, lower the sharp bee noise voltage of output, ask external ceramic capacitor or thin gland capacitor C11, C12；In order to lower output ripple
Voltage, stabilized power source are run, please external electrolytic capacitor C9, C10 between+V terminals and-v kick son.
Telemetered signal is for line pressure drop of the compensation from the leading-out terminal of power supply to face terminals；Line pressure during telemetering on wiring
Dropping offset voltage range must be in the adjustable extent of output voltage；Voltage between-V and-S is in below 0.5V；In addition, it please examine
Consider the power loss caused by line pressure drop, pay attention to using power module in the range of peak power output；Telemetering wiring uses
Shielding line, multiple twin money, parallel wiring etc., to reduce the influence of noise；Parallel signal is the PC terminals on power module.There is polylith
Power module is used in parallel or is handled for power supply redundancy；It needs each power module output current equal, otherwise can damage electricity
Source module.
Soft start is the outer connecting resistance between R and+BC terminals, can inhibit inrush current when input is opened；By
It can lead to the fusing of main fuse, the welding of relay and switch, shutdown of non-fuse breaker etc. in inrush current
Abnormal phenomenon, R1, F2 consider surge current peak volume.
Protection circuit, that is, boost voltage voltage is smooth, and capacitor is the ripple voltage according to boost voltage, twists wave electric current, defeated
Go out the retention time come it is selected.Suitable condenser capacity makes the ripple voltage of boost voltage in below 15Vp-p.
Single-chip microcomputer signal control circuit is the switch of remote control power module.Built-in remote-control switching function is in input voltage
The switch of output is controlled in the state of connection.Remote control ON/OFF circuit is isolated by photo coupler B1 with the inlet circuit of power supply；
Microcontroller exports a high level, drives a triode ,+12V by optocoupler through triode ON, lead by control optocoupler output
It is logical, then control power module output whether there is.
The utility model is not limited to above-described embodiment, on the basis of technical solution disclosed in the utility model, this
For the technical staff in field according to disclosed technology contents, not needing to performing creative labour can be to some of which technology spy
Sign makes some and replaces and deform, these are replaced and deformation is within the protection scope of the present utility model.
Claims (10)
1. a kind of secondary power supply circuit for electromagnetic interference equipment, which is characterized in that including：
AC/DC power modules, to convert alternating current to direct current；
Input filter circuit is exchanged, to realize that level-one filters, while also carries out overcurrent protection；
Direct current output filter circuit, to realize that level-one filters；
Telemetered signal, parallel signal terminal, wherein telemetered signal terminal are to the output that sends telemetered signal to compensate from power supply
For terminal to the line pressure drop of face terminals, parallel signal terminal is used in parallel to realize polylith AC/DC power modules；
Voltage-regulating circuit, reaching adjusting output voltage needs voltage；
To inhibit to input inrush current when opening, protection circuit is used for soft start, protection circuit, wherein soft starting circuit
So that boost voltage is smooth；
Single-chip microcomputer signal control circuit, to carry out remote control AC/DC power modules；
The exchange input filter circuit, direct current output filter circuit, single-chip microcomputer signal control circuit, soft start, protection circuit
It is both connected on AC/DC power modules, the voltage-regulating circuit is connected to AC/DC power modules and direct current output filter circuit
Between, the telemetered signal, parallel signal terminal are connected between direct current output filter circuit and voltage-regulating circuit.
A kind of 2. secondary power supply circuit for electromagnetic interference equipment according to claim 1, which is characterized in that the friendship
Stream input filter circuit be low-pass filter, by common mode inductance L1, common mode capacitance C2, common mode capacitance C3, differential mode capacitor C1 and
Differential mode capacitor C4 is formed, and the common mode inductance L1 selects common mode choke, the preceding termination alternating current 220V electricity of the common mode choke
Source input terminal XB1-XB2, rear to terminate AC/DC power module power inputs, differential mode capacitor C1 short circuits are before common mode choke
Between holding the two poles of the earth, differential mode capacitor C4 short circuits are between the two poles of the earth of common mode choke rear end, common mode capacitance C2, the common mode capacitance C3 of series connection
Short circuit is between the two poles of the earth of common mode choke rear end, the electrode points ground connection between common mode capacitance C2, common mode capacitance C3.
A kind of 3. secondary power supply circuit for electromagnetic interference equipment according to claim 1 or 2, which is characterized in that institute
Direct current input filter circuit is stated as low-pass filter, by common mode capacitance C9, common mode capacitance C10, differential mode capacitor C11, differential mode capacitor
C12 is formed, and common mode capacitance C9, common mode capacitance C10 are simultaneously connected between AC/DC power module power output ends the two poles of the earth, differential mode electricity
Hold C11, differential mode capacitor C12 series connection to be followed by between AC/DC power module power output ends the two poles of the earth, differential mode capacitor C11, differential mode electricity
Hold the electrode points ground connection between C12, the differential mode capacitor C11 of series connection, differential mode capacitor C12 rear ends are sub as DC power output end
XB5-XB6。
4. a kind of secondary power supply circuit for electromagnetic interference equipment according to claim 3, which is characterized in that described
Position is connected to attenuating output spike noise within power output end 50mm between AC/DC power module power output ends the two poles of the earth
The ceramic condenser C8 of voltage.
5. a kind of secondary power supply circuit for electromagnetic interference equipment according to claim 3, which is characterized in that described common
Mould capacitance C9, common mode capacitance C10 are electrolytic capacitor, differential mode capacitor C11, differential mode capacitor C12 be ceramic capacitor or
Thin film capacitor.
A kind of 6. secondary power supply circuit for electromagnetic interference equipment according to claim 1 or 2, which is characterized in that institute
State telemetered signal, parallel signal terminal includes two groups of wire connection terminals XP2, XP3 in parallel, two groups of wire connection terminal XP2, XP3 structures
It is identical, comprising four road signal input parts, respectively telemetering end ,+S ends ,-S ends, PC ends, wherein, telemetering end loads to acquire
Input voltage pressure drop ,+S ends ,-S ends are compensating the line pressure drop from the leading-out terminal of AC/DC power modules to face terminals, PC
It is used with for polylith AC/DC power modules parallel combination at end.
A kind of 7. secondary power supply circuit for electromagnetic interference equipment according to claim 1 or 2, which is characterized in that institute
It states voltage-regulating circuit and includes the potentiometer RP1 being connected on resistance R4 and telemetering end on AC/DC power module TRIM feet,
Middle TRIM feet connect XB6 terminals through resistance R4, and telemetering end meets XB5 through potentiometer RP1.
A kind of 8. secondary power supply circuit for electromagnetic interference equipment according to claim 1 or 2, which is characterized in that institute
It states soft start, circuit is protected to include the outer connecting resistance for inhibiting to input inrush current when opening, the outer connecting resistance includes
The power resistor R1 and fuse F2 being connected between AC/DC power module R feet and+BC feet, the AC/DC power modules+
Capacitance C16, capacitance C17 in parallel are connected between BC feet and-BC feet.
A kind of 9. secondary power supply circuit for electromagnetic interference equipment according to claim 1 or 2, which is characterized in that institute
It states single-chip microcomputer signal control circuit and includes the optocoupler being connected between control terminal and AC/DC power modules.
A kind of 10. secondary power supply circuit for electromagnetic interference equipment according to claim 1 or 2, which is characterized in that institute
It states AC/DC power modules and selects PFE1000F-28 power supply chips.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721375764.4U CN207573251U (en) | 2017-10-24 | 2017-10-24 | A kind of secondary power supply circuit for electromagnetic interference equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721375764.4U CN207573251U (en) | 2017-10-24 | 2017-10-24 | A kind of secondary power supply circuit for electromagnetic interference equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612367A (en) * | 2017-10-24 | 2018-01-19 | 扬州宇安电子科技有限公司 | A kind of secondary power supply circuit for electromagnetic interference equipment |
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2017
- 2017-10-24 CN CN201721375764.4U patent/CN207573251U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107612367A (en) * | 2017-10-24 | 2018-01-19 | 扬州宇安电子科技有限公司 | A kind of secondary power supply circuit for electromagnetic interference equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Secondary power circuit used for electromagnetic interference equipment Effective date of registration: 20190816 Granted publication date: 20180703 Pledgee: Bank of China Limited Hangjiang Branch, Yangzhou Pledgor: Yangzhou Yu An Electronic Science and Technology Co., Ltd. Registration number: Y2019320000056 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200317 Granted publication date: 20180703 Pledgee: Bank of China Limited Hangjiang Branch, Yangzhou Pledgor: YANGZHOU YUAN ELECTRONIC TECHNOLOGY Co.,Ltd. Registration number: Y2019320000056 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |