CN206807317U - A kind of miniature circuit breaker inverse-excitation type switch power-supply circuit - Google Patents
A kind of miniature circuit breaker inverse-excitation type switch power-supply circuit Download PDFInfo
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- CN206807317U CN206807317U CN201720668869.2U CN201720668869U CN206807317U CN 206807317 U CN206807317 U CN 206807317U CN 201720668869 U CN201720668869 U CN 201720668869U CN 206807317 U CN206807317 U CN 206807317U
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Abstract
The utility model discloses a kind of miniature circuit breaker inverse-excitation type switch power-supply circuit,AC-input voltage is input to the armature winding of high frequency transformer after input rectifying filter circuit,Alternating voltage is after flyback,High frequency voltage in assists winding obtains output voltage VCC after output rectifier and filter rectifying and wave-filtering,When VCC voltages rise,The high input constant pressure and flow output transform chip pin DRAIN of primary winding input inverse-excitation type voltage can also raise,The high input constant pressure and flow output transform chip internal of inverse-excitation type is integrated with 900V metal-oxide-semiconductor,The high input constant pressure and flow output transform chip metal-oxide-semiconductor internal control voltage rise of inverse-excitation type,The high input constant pressure and flow output transform chip of inverse-excitation type is controlled by adaptive PWM/PFM average efficiency,Control the switch of metal-oxide-semiconductor,Reduce dutycycle,So as to realize voltage stabilizing purpose,It is on the contrary,When VCC is reduced,It is same stable,So as to realize constant voltage/constant current purpose.
Description
Technical field
It the utility model is related to miniature circuit breaker field, and in particular to a kind of miniature circuit breaker inverse-excitation type switch power-supply electricity
Road.
Background technology
On the one hand the fast development of electronic technology has driven the development of power technology, on the one hand also power supply product is proposed
Higher and higher requirement.Small volume, in light weight, high-effect, the green power supply of high reliability just becomes as the development of power supply product
Gesture, and volume is big, and power supply conversion efficiency is low, and Overall Power Consumption is big etc. using linear power supply be present in existing controllable miniature circuit breaker
Shortcoming.
Utility model content
The purpose of this utility model is to provide a kind of miniature circuit breaker inverse-excitation type switch power-supply circuit, to overcome existing skill
The deficiency of art.
To reach above-mentioned purpose, the utility model adopts the following technical scheme that：
A kind of miniature circuit breaker inverse-excitation type switch power-supply circuit, transformer T1 armature winding are connected to input rectifying all the way
Filter circuit, another way are connected to the high input constant pressure and flow output transform chip of inverse-excitation type, and input rectifying filter circuit is connected to friendship
Voltage is flowed, rectified output circuit inputs constant pressure and flow output transform chip to transformer T1 assists winding with inverse-excitation type height all the way
Power end connects, the rectified output circuit output 12V power supplys of another way, and transformer T1 secondary windings is defeated through secondary commutation circuit
Go out 5V power supplys.
Further, transformer T1 armature winding one end is connected with the first diode D negative pole, the first diode D's
The negative pole that first resistor R1, the first diode D are connected between positive pole and alternating voltage L levels is being connected to the first electric capacity C1 just
Pole, second resistance R13 one end, 3rd resistor R20 one end, second electric capacity C4 one end；First electric capacity C1 negative pole is connected to exchange
Voltage N levels and ground connection, the second resistance R13 other end have been sequentially connected in series 3rd resistor R14, the 4th resistance R15 and the 5th resistance
R16, the 5th resistance R16 are connected to the high input constant pressure and flow output transform chip of inverse-excitation type with the 4th resistance R15 ends being connected
VREG pins, the 5th resistance R16 other ends ground connection, the 5th resistance R16 are simultaneously connected with the 3rd electric capacity C5, and the second electric capacity C4's is another
End is connected to the 6th resistance R21 one end, and the 6th resistance R21 other end is all connected to second with the 3rd resistor R20 other end
Diode D2 negative pole, the second diode D2 other end is connected with the other end of transformer T1 armature windings, at the beginning of transformer T1
The other end of level winding is connected to five DRAIN pins of the high input constant pressure and flow output transform chip of inverse-excitation type；
One end of transformer T1 secondary output end is connected to the 3rd diode D4 positive pole, the 3rd diode D4 negative pole
The 4th electric capacity C14 positive pole, the 5th electric capacity C15 one end and three terminal regulator U3 input are connected to, transformer T1's
The other end of secondary output end is connected to the 3rd diode D4 negative pole, the 5th electric capacity C15 other end, three terminal regulator U3
Output end and ground connection, three terminal regulator U3 input and output end are connected with the 6th electric capacity C16；
One end of transformer T1 assists winding is connected with the 6th resistance R18 one end, the 4th diode D3 positive pole, the
The six resistance R18 other end is connected with the 7th resistance R19 one end and is connected to the high input constant pressure and flow output transform core of inverse-excitation type
The VSEN pins of piece, the 4th diode D3 negative pole are connected to the 6th electric capacity C12 positive pole, the first inductance L1 one end, the 5th
Diode D5 positive pole, the 6th electric capacity C12 negative pole ground connection, the 5th diode D5 negative pole are connected to the one of the 8th resistance R17
End, the 8th resistance R17 other end are connected to the high input of the 7th electric capacity C20 positive pole, the 8th electric capacity C6 one end and inverse-excitation type
The VCC pin of constant pressure and flow output transform chip, the 7th electric capacity C20 negative pole and the 8th electric capacity C6 other end are all connected to instead
Swash the GND pin of the high input constant pressure and flow output transform chip of formula and ground connection, the first inductance L1 other end is connected to the 9th electricity
Appearance C19 positive pole, the 9th resistance R27 one end, the tenth resistance R10 one end, the tenth electric capacity C13 one end, the 9th electric capacity C19 negative pole
It is grounded after being connected with the 9th resistance the R27 other end, the tenth resistance R10 other end, the tenth electric capacity C13 other end；7th
Resistance R19 other end ground connection, the other end ground connection of transformer T1 assists winding；
The ISEN pins of the high input constant pressure and flow output transform chip of inverse-excitation type are connected to the 11st resistance R22 one end, the
The 11 resistance R22 other ends are grounded.
Further, the 7th electric capacity C20 is low frequency filtering electric capacity.
Further, the 8th electric capacity C6 is high-frequency filter capacitor.
Further, the 6th electric capacity C12, the tenth electric capacity C13, the 9th electric capacity C19 are assists winding filter capacitor.
Further, the 4th electric capacity C14, the 5th electric capacity C15, the 6th electric capacity C16 are secondary windings filter capacitor.
Compared with prior art, the utility model has technique effect beneficial below：
A kind of miniature circuit breaker inverse-excitation type switch power-supply circuit of the utility model, AC-input voltage filter through input rectifying
The armature winding of high frequency transformer is input to after circuit, after flyback, the high frequency voltage in assists winding passes through alternating voltage
Output voltage VCC is obtained after output rectifier and filter rectifying and wave-filtering, when VCC voltages rise, the input of primary winding
The high input constant pressure and flow output transform chip pin DRAIN of inverse-excitation type voltage can also raise, the high input constant pressure and flow of inverse-excitation type
Output transform chip internal is integrated with 900V metal-oxide-semiconductor, is controlled inside the high input constant pressure and flow output transform chip metal-oxide-semiconductor of inverse-excitation type
Voltage rise processed, the high input constant pressure and flow output transform chip of inverse-excitation type are controlled by adaptive PWM/PFM average efficiency, control
The switch of metal-oxide-semiconductor processed, reduces dutycycle, so as to realize voltage stabilizing purpose, conversely, when VCC is reduced, it is same stable, so as to
Realize constant voltage/constant current purpose；
After input ac voltage rectification, by second resistance R13,3rd resistor R14, the electricity of the 4th resistance R15 and the 5th
The high VREG pins for inputting constant pressure and flow output transform chip of inverse-excitation type are inputted after hindering R16 partial pressures, when the voltage of VREG pins surpasses
After crossing 1.2V, the high input constant pressure and flow output transform chip of inverse-excitation type will stop the switch of metal-oxide-semiconductor, be stopped, to input electricity
Pressure carries out overvoltage protection；
When transformer assists winding loop voltage inputs inverse-excitation type after the 6th resistance R18 and the 7th resistance R19 partial pressures
The VSEN pins of height input constant pressure and flow output transform chip, after VSEN pin voltages are more than 1.45V, chip will stop MOS
The switch of pipe, is stopped, and overvoltage protection is carried out to output voltage；
3rd resistor R20, the 6th resistance R21, the second electric capacity C4 and the second diode D2 composition RCD clamp circuits, due to
The presence of the leakage inductance of transformer, the metal-oxide-semiconductor of the high input constant pressure and flow output transform chip of inverse-excitation type can produce very in shutdown moment
Big peak voltage so that metal-oxide-semiconductor bears higher voltage stress, in some instances it may even be possible to cause switching tube to damage, in order to ensure chip
Safe and reliable work, it is necessary to leakage inductance energy is absorbed by clamp circuit, the utility model is simple in construction, high efficient and reliable, miniaturization,
It is cost-effective, there is higher practicality.
Brief description of the drawings
Fig. 1 is circuit diagram of the present utility model
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of miniature circuit breaker inverse-excitation type switch power-supply circuit, transformer T1 armature winding connect all the way
In input rectifying filter circuit, another way is connected to the high input constant pressure and flow output transform chip of inverse-excitation type, input rectifying filtering
Circuit is connected to alternating voltage, and rectified output circuit and the high input constant pressure and flow of inverse-excitation type are defeated all the way for transformer T1 assists winding
Go out to convert the connection of chip power end, the rectified output circuit output 12V power supplys of another way, transformer T1 secondary windings is through secondary
Rectification circuit exports 5V power supplys.
Transformer T1 armature winding one end is connected with the first diode D negative pole, and the first diode D positive pole is with exchanging
The negative pole that first resistor R1, the first diode D are connected between voltage L levels is connected to the first electric capacity C1 positive pole, second resistance
R13 one end, 3rd resistor R20 one end, second electric capacity C4 one end；First electric capacity C1 negative pole is connected to alternating voltage N levels and connect
Ground, the second resistance R13 other end have been sequentially connected in series 3rd resistor R14, the 4th resistance R15 and the 5th resistance R16, the 5th resistance
R16 and the 4th resistance R15 ends being connected are connected to the VREG pins of the high input constant pressure and flow output transform chip of inverse-excitation type, and the 5th
The resistance R16 other ends are grounded, and the 5th resistance R16 is simultaneously connected with the 3rd electric capacity C5, and the second electric capacity C4 other end is connected to the 6th
Resistance R21 one end, the 6th resistance R21 other end are all connected to the negative of the second diode D2 with the 3rd resistor R20 other end
Pole, the second diode D2 other end are connected with the other end of transformer T1 armature windings, transformer T1 armature windings it is another
End is connected to five DRAIN pins of the high input constant pressure and flow output transform chip of inverse-excitation type；
One end of transformer T1 secondary output end is connected to the 3rd diode D4 positive pole, the 3rd diode D4 negative pole
The 4th electric capacity C14 positive pole, the 5th electric capacity C15 one end and three terminal regulator U3 input are connected to, transformer T1's
The other end of secondary output end is connected to the 3rd diode D4 negative pole, the 5th electric capacity C15 other end, three terminal regulator U3
Output end and ground connection, three terminal regulator U3 input and output end are connected with the 6th electric capacity C16；
One end of transformer T1 assists winding is connected with the 6th resistance R18 one end, the 4th diode D3 positive pole, the
The six resistance R18 other end is connected with the 7th resistance R19 one end and is connected to the high input constant pressure and flow output transform core of inverse-excitation type
The VSEN pins of piece, the 4th diode D3 negative pole are connected to the 6th electric capacity C12 positive pole, the first inductance L1 one end, the 5th
Diode D5 positive pole, the 6th electric capacity C12 negative pole ground connection, the 5th diode D5 negative pole are connected to the one of the 8th resistance R17
End, the 8th resistance R17 other end are connected to the high input of the 7th electric capacity C20 positive pole, the 8th electric capacity C6 one end and inverse-excitation type
The VCC pin of constant pressure and flow output transform chip, the 7th electric capacity C20 negative pole and the 8th electric capacity C6 other end are all connected to instead
Swash the GND pin of the high input constant pressure and flow output transform chip of formula and ground connection, the first inductance L1 other end is connected to the 9th electricity
Appearance C19 positive pole, the 9th resistance R27 one end, the tenth resistance R10 one end, the tenth electric capacity C13 one end, the 9th electric capacity C19 negative pole
It is grounded after being connected with the 9th resistance the R27 other end, the tenth resistance R10 other end, the tenth electric capacity C13 other end；7th
Resistance R19 other end ground connection, the other end ground connection of transformer T1 assists winding；
The ISEN pins of the high input constant pressure and flow output transform chip of inverse-excitation type are connected to the 11st resistance R22 one end, the
The 11 resistance R22 other ends are grounded.7th electric capacity C20 is low frequency filtering electric capacity, and the 8th electric capacity C6 is high-frequency filter capacitor.6th
Electric capacity C12, the tenth electric capacity C13, the 9th electric capacity C19 are assists winding filter capacitor.4th electric capacity C14, the 5th electric capacity C15,
Six electric capacity C16 are secondary windings filter capacitor.Three terminal regulator U3 is 78L05 voltage-stablizers.
As shown in table 1, it is each component parameter value of most preferred embodiment.
Table 1
| Element number | Parameter | Element number | Parameter | Element number | Parameter |
| D | 1N4007/SMA | D2 | S1M/SOD-123 | R20 | 200k/1206 |
| C1 | 10uF/400V | D3 | SB2100 | R21 | 51/0805 |
| C4 | 220pF/1kV/1206 | D4 | SR160 | R22 | 1.72/1%/1206 |
| C5, C6 | 0.1uF/25V/0805 | D5 | S1M/SOD-123 | R10, R27 | 1.6k/0805 |
| C12, C19 | 220uF/16V | R13, R14, R15 | 5.1M/1206 | U1 | SY50433 |
| C13, C15 | 1uF/25V/0603 | R16 | 27k/1206 | U3 | U78L05A |
| C14 | 100uF/25V | R17 | 2/0805 | T1 | EE13/2.01mH |
| C16 | 4.7uF/25V/0805 | R18 | 48.29k/1%/0603 | L1 | 3.3uH |
| C20 | 10uF/25V | R19 | 5.6k/1%/0603 | R1 | 4R7/1/2W |
It is described further below in conjunction with the accompanying drawings to structural principle of the present utility model and using step：
AC-input voltage is input to the armature winding of high frequency transformer, alternating voltage warp after input rectifying filter circuit
After crossing flyback, the high frequency voltage in assists winding obtains output voltage VCC after output rectifier and filter rectifying and wave-filtering, when
When VCC voltages rise, the high input constant pressure and flow output transform chip pin DRAIN of primary winding input inverse-excitation type electricity
Pressure can also raise, and the high input constant pressure and flow output transform chip internal of inverse-excitation type is integrated with 900V metal-oxide-semiconductor, the high input of inverse-excitation type
Constant pressure and flow output transform chip metal-oxide-semiconductor internal control voltage raises, and the high input constant pressure and flow output transform chip of inverse-excitation type leads to
Adaptive PWM/PFM average efficiency control is crossed, the switch of metal-oxide-semiconductor is controlled, reduces dutycycle, so as to realize voltage stabilizing purpose,
Conversely, when VCC is reduced, it is same stable, so as to realize constant voltage/constant current purpose.
Alternating voltage passes through current-limiting resistance R1, is changed into the primary of DC voltage input transformer after the first diode D rectifications
Winding one end, the pin of the high input constant pressure and flow output transform chip of inverse-excitation type is inputted by the armature winding other end of transformer
DRAIN, the switch of metal-oxide-semiconductor is controlled, adjust output voltage.
Transformer assists winding power supply carries out rectification by the 5th diode D5, by the 8th resistance R17 current-limiting resistances, gives
The high input constant pressure and flow output transform chip of inverse-excitation type provides power supply；
Transformer assists winding power supply carries out rectification by the 4th diode D3, is done by the first inductance L1 filtering common modes
Disturb, adjustment of load is carried out by the 9th resistance R27, the tenth resistance R10, there is provided output voltage 12V；
After transformer secondary output output voltage is by the 4th electric capacity C14 rectifications, 5V is exported by three terminal regulator U3.
Input voltage overvoltage protection：After input ac voltage rectification, by second resistance R13,3rd resistor R14,
The high VREG pins for inputting constant pressure and flow output transform chip of inverse-excitation type are inputted after four resistance R15 and the 5th resistance R16 partial pressures, when
After the voltage of VREG pins is more than 1.2V, the high input constant pressure and flow output transform chip of inverse-excitation type will stop the switch of metal-oxide-semiconductor, stop
Only work, overvoltage protection is carried out to input voltage.
Output voltage is protected：When transformer assists winding loop voltage passes through the 6th resistance R18 and the 7th resistance R19 partial pressures
The VSEN pins of the high input constant pressure and flow output transform chip of inverse-excitation type, after VSEN pin voltages are more than 1.45V, core are inputted afterwards
Piece will stop the switch of metal-oxide-semiconductor, be stopped, and overvoltage protection is carried out to output voltage.
3rd resistor R20, the 6th resistance R21, the second electric capacity C4 and the second diode D2 composition RCD clamp circuits, due to
The presence of the leakage inductance of transformer, the metal-oxide-semiconductor of the high input constant pressure and flow output transform chip of inverse-excitation type can produce very in shutdown moment
Big peak voltage so that metal-oxide-semiconductor bears higher voltage stress, in some instances it may even be possible to cause switching tube to damage, in order to ensure chip
Safe and reliable work, it is necessary to leakage inductance energy is absorbed by clamp circuit, the utility model is simple in construction, high efficient and reliable, miniaturization,
It is cost-effective, there is higher practicality.
Claims (6)
1. a kind of miniature circuit breaker inverse-excitation type switch power-supply circuit, it is characterised in that transformer T1 armature winding connects all the way
In input rectifying filter circuit, another way is connected to the high input constant pressure and flow output transform chip of inverse-excitation type, input rectifying filtering
Circuit is connected to alternating voltage, and rectified output circuit and the high input constant pressure and flow of inverse-excitation type are defeated all the way for transformer T1 assists winding
Go out to convert the connection of chip power end, the rectified output circuit output 12V power supplys of another way, transformer T1 secondary windings is through secondary
Rectification circuit exports 5V power supplys.
A kind of 2. miniature circuit breaker inverse-excitation type switch power-supply circuit according to claim 1, it is characterised in that transformer T1
Armature winding one end be connected with the first diode D negative pole, connected between the first diode D positive pole and alternating voltage L levels
The negative pole for having first resistor R1, the first diode D is connected to the first electric capacity C1 positive pole, second resistance R13 one end, 3rd resistor
R20 one end, second electric capacity C4 one end；First electric capacity C1 negative pole is connected to alternating voltage N levels and ground connection, second resistance R13's
The other end has been sequentially connected in series 3rd resistor R14, the 4th resistance R15 and the 5th resistance R16, the 5th resistance R16 and the 4th resistance R15
One end of connection is connected to the VREG pins of the high input constant pressure and flow output transform chip of inverse-excitation type, the 5th another terminations of resistance R16
Ground, the 5th resistance R16 are simultaneously connected with the 3rd electric capacity C5, and the second electric capacity C4 other end is connected to the 6th resistance R21 one end, and the 6th
The resistance R21 other end is all connected to the second diode D2 negative pole with the 3rd resistor R20 other end, the second diode D2's
The other end is connected with the other end of transformer T1 armature windings, and it is defeated that the other ends of transformer T1 armature windings is connected to inverse-excitation type height
Enter five DRAIN pins of constant pressure and flow output transform chip；
One end of transformer T1 secondary output end is connected to the 3rd diode D4 positive pole, the 3rd diode D4 negative pole connection
In the 4th electric capacity C14 positive pole, the 5th electric capacity C15 one end and three terminal regulator U3 input, transformer T1 secondary
The other end of output end be connected to the 3rd diode D4 negative pole, the 5th electric capacity C15 the other end, three terminal regulator U3 output
End and ground connection, three terminal regulator U3 input and output end are connected with the 6th electric capacity C16；
One end of transformer T1 assists winding is connected with the 6th resistance R18 one end, the 4th diode D3 positive pole, the 6th electricity
The resistance R18 other end is connected with the 7th resistance R19 one end and is connected to the high input constant pressure and flow output transform chip of inverse-excitation type
VSEN pins, the 4th diode D3 negative pole are connected to the 6th electric capacity C12 positive pole, the first inductance L1 one end, the five or two pole
Pipe D5 positive pole, the 6th electric capacity C12 negative pole ground connection, the 5th diode D5 negative pole are connected to the 8th resistance R17 one end, the
The eight resistance R17 other end is connected to the high input constant pressure and constant of the 7th electric capacity C20 positive pole, the 8th electric capacity C6 one end and inverse-excitation type
The VCC pin of output transform chip is flowed, the 7th electric capacity C20 negative pole and the 8th electric capacity C6 other end are all connected to inverse-excitation type height
The GND pin and ground connection, the first inductance L1 other end for inputting constant pressure and flow output transform chip are connected to the 9th electric capacity C19's
Positive pole, the 9th resistance R27 one end, the tenth resistance R10 one end, the tenth electric capacity C13 one end, the 9th electric capacity C19 negative pole and the 9th
The resistance R27 other end, the tenth resistance R10 other end, the tenth electric capacity C13 other end are grounded after connecting；7th resistance R19
The other end ground connection, transformer T1 assists winding the other end ground connection；
The ISEN pins of the high input constant pressure and flow output transform chip of inverse-excitation type are connected to the 11st resistance R22 one end, and the 11st
The resistance R22 other ends are grounded.
A kind of 3. miniature circuit breaker inverse-excitation type switch power-supply circuit according to claim 1, it is characterised in that the 7th electric capacity
C20 is low frequency filtering electric capacity.
A kind of 4. miniature circuit breaker inverse-excitation type switch power-supply circuit according to claim 1, it is characterised in that the 8th electric capacity
C6 is high-frequency filter capacitor.
A kind of 5. miniature circuit breaker inverse-excitation type switch power-supply circuit according to claim 1, it is characterised in that the 6th electric capacity
C12, the tenth electric capacity C13, the 9th electric capacity C19 are assists winding filter capacitor.
A kind of 6. miniature circuit breaker inverse-excitation type switch power-supply circuit according to claim 1, it is characterised in that the 4th electric capacity
C14, the 5th electric capacity C15, the 6th electric capacity C16 are secondary windings filter capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720668869.2U CN206807317U (en) | 2017-06-09 | 2017-06-09 | A kind of miniature circuit breaker inverse-excitation type switch power-supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720668869.2U CN206807317U (en) | 2017-06-09 | 2017-06-09 | A kind of miniature circuit breaker inverse-excitation type switch power-supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206807317U true CN206807317U (en) | 2017-12-26 |
Family
ID=60746672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720668869.2U Active CN206807317U (en) | 2017-06-09 | 2017-06-09 | A kind of miniature circuit breaker inverse-excitation type switch power-supply circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN206807317U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713930A (en) * | 2018-11-11 | 2019-05-03 | 陶显芳 | A kind of electric shock device high-voltage pulse power source |
| CN113765162A (en) * | 2020-06-01 | 2021-12-07 | 凯轮威新能源科技有限公司 | AC-DC rectifier with multi-voltage-class output |
| CN113765164A (en) * | 2020-06-01 | 2021-12-07 | 凯轮威新能源科技有限公司 | AC-DC converter |
| CN116885953A (en) * | 2023-07-13 | 2023-10-13 | 广州冠廷机电设备有限公司 | High-voltage conversion circuit |
-
2017
- 2017-06-09 CN CN201720668869.2U patent/CN206807317U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713930A (en) * | 2018-11-11 | 2019-05-03 | 陶显芳 | A kind of electric shock device high-voltage pulse power source |
| CN113765162A (en) * | 2020-06-01 | 2021-12-07 | 凯轮威新能源科技有限公司 | AC-DC rectifier with multi-voltage-class output |
| CN113765164A (en) * | 2020-06-01 | 2021-12-07 | 凯轮威新能源科技有限公司 | AC-DC converter |
| CN116885953A (en) * | 2023-07-13 | 2023-10-13 | 广州冠廷机电设备有限公司 | High-voltage conversion circuit |
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