CN208752488U - A kind of ripple current generation circuit - Google Patents
A kind of ripple current generation circuit Download PDFInfo
- Publication number
- CN208752488U CN208752488U CN201821639975.9U CN201821639975U CN208752488U CN 208752488 U CN208752488 U CN 208752488U CN 201821639975 U CN201821639975 U CN 201821639975U CN 208752488 U CN208752488 U CN 208752488U
- Authority
- CN
- China
- Prior art keywords
- circuit
- power tube
- current
- low frequency
- source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 46
- 238000004804 winding Methods 0.000 claims description 39
- 230000005611 electricity Effects 0.000 claims description 17
- 238000012360 testing method Methods 0.000 abstract description 16
- 238000004088 simulation Methods 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 210000001367 artery Anatomy 0.000 description 5
- 210000003462 vein Anatomy 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a kind of ripple current generation circuit, including DC source, first capacitor, measured capacitance, first capacitor both ends are connected in parallel on DC source both ends, DC source is for providing DC pulse moving voltage, it further include containing inductance, second power tube, the low frequency pulsating current charging circuit of second diode, contain transformer, first power tube, first diode, the dither current discharge circuit of power tube protection circuit, control and driving circuit, the low frequency pulsating electric current charging of electrolytic capacitor is controlled by control and driving circuit, dither current discharging function, the applicable cases of true simulation electrolytic capacitor, realize the function of electrolytic capacitor ripple test, to verify the service life of electrolytic capacitor.The ripple current generation circuit of the utility model has test less energy-consuming, circuit easy to adjust, can meet the test request without capacity, different current ripples, also has the advantages that circuit is simple, inexpensive, small in size, high performance, application value with higher.
Description
Technical field
The utility model relates to a kind of ripple current generation circuits, in particular to are applied to the low frequency of electrolytic capacitor test
Pulsating current charging, the circuit that the current ripples of dither current electric discharge generate.
Background technique
Currently, Switching Power Supply is widely applied to military, industry and civil field, energy conversion and transmitting are realized, meet
The power reguirements of load.In the application 75W or less AC/DC, the higher scheme of cost performance is using diode rectification, through being electrolysed
Capacitor filtering obtains pulsating volage, has subsequent power inverter to provide operating voltage.
Because electrolytic capacitor thus have characteristic, to limit the purposes of AC/DC converter.Generally, for 220VAC input field
It closes, using the electrolytic capacitor of 400V pressure resistance as bus filter capacitor.But when the pressure resistance of electrolytic capacitor be greater than 250V, it is low
Temperature can only generally work to -25 DEG C.Certain applications occasion of the work at -40 DEG C cannot be met the requirements, so that AC/DC is converted
The application of device is limited.In order to solve temperature problem, CBB thin-film capacitor can be used to be filtered, but there are volumes excessive, cost
Excessively high disadvantage.
Due to the service life of electrolytic capacitor and its pressure resistance, equivalent series resistance (ESR:Equivalent Series
Resistance), the factors such as ripple current (Ripple Current), loss angle (tg δ) are related, especially maximum ripple electricity
Stream, i.e. rated ripple current (IRAC).In actual application, the charge and discharge form of electrolytic capacitor shows themselves in that low frequency arteries and veins
Streaming current charging, dither current electric discharge.Low frequency charge frequency is 2 overtones bands of input ac voltage (as input frequency is
50Hz/60Hz alternating current, then the frequency of capacitor charging is 100Hz/120Hz), and the charging time is shorter, completes to fill in 1ms
Electricity；High-frequency discharge frequency is the working frequency (such as 65KHz switching frequency) of converter.This special charge and discharge form is to electrolysis
The ripple current that capacitor is born has a great impact, and then influences whether its service life.
Test for electrolytic capacitor ripple, conventional method are realized by the way of power resistor+power switch tube
The charge and discharge of electrolytic capacitor, as shown in Figure 1, the circuit being made of DC source, power tube, two resistance, control and driving circuit, with
The service life of electrolytic capacitor is verified, due to the mode to consume energy using resistance, circuit is relatively simple.But the test method is deposited
The disadvantages of energy consumption is big, system bulk is big, it is difficult to meet instantly social energy conservation and environmental protection growth requirement, and will increase electrolysis electricity
The testing cost of the production cost of appearance, especially electrolytic capacitor.
For above-mentioned problem, the patent document of license notification number CN105242737A gives a kind of ripple current
Production method and circuit, as shown in Fig. 2, including a DC source, an inductance, a transformer, a capacitor (for measured capacitance), one or two
Pole pipe and control and driving circuit.The patent document gives another embodiment, as shown in Figure 3.Including a DC source,
One inductance, a transformer, a capacitor (for measured capacitance), a diode and control and driving circuit are, it can be achieved that electrolytic capacitor
Charging/discharging function has the characteristics that at low cost, energy consumption is low, wiring is simple, small in size.But circuit shown in Fig. 2 is only able to achieve
The service life of electrolytic capacitor high-frequency charge and discharge is verified, and circuit shown in Fig. 3 is only able to achieve the charging of electrolytic capacitor DC current, high-frequency electrical
Banish the service life verifying of electricity.In fact, the operating current feature of the electrolytic capacitor in switch converters are as follows: low frequency pulsating electric current fills
Electricity, dither current electric discharge.Therefore the method and circuit that patent is proposed are not able to satisfy this of low frequency pulsating electric current charging
A requirement, so that the confidence level of electrochemical capacitor life test result can be reduced.
In conclusion the ripple current for electrolytic capacitor is tested, when verifying its service life, existing method is difficult to
Meet the requirement of Low-power test, real simulation electrolytic capacitor working condition simultaneously, so that the higher cost of its test, survey
Test result is with a low credibility.
Utility model content
In view of this, the utility model is to overcome the shortcomings of existing methods the technical issues of solution, a kind of ripple electricity is proposed
Generation circuit is flowed, the function of the charging of low frequency pulsating electric current, dither current electric discharge, true simulation electrolytic capacitor can be provided
Real work situation, and be able to achieve energy feedback to power supply, have the advantages that at low cost, less energy-consuming, small in size, and circuit
Wiring is simple, easy to use, high reliablity, test result are with a high credibility.
The technical solution that the utility model solves above-mentioned technical problem is as follows:
A kind of ripple current generation circuit, for measured capacitance ripple current test, including DC source, first capacitor,
Measured capacitance, first capacitor both ends are connected in parallel on DC source both ends, and DC source further includes containing electricity for providing DC pulse moving voltage
Sense, the second power tube, the second diode low frequency pulsating current charging circuit, contain transformer, the first power tube, the one or two pole
The dither current discharge circuit of pipe, power tube protection circuit, control and driving circuit, transformer include primary side winding and pair
Side winding, connection relationship are as follows:
Low frequency pulsating current charging circuit input terminal connects DC source anode, and low frequency pulsating current charging circuit output end connects
Dither current discharge circuit input terminal is connect, dither current discharge circuit output end connects DC source anode, low frequency arteries and veins
Streaming current charging circuit control terminal connection control and one control terminal of driving circuit, the connection of dither current discharge circuit control terminal
Control and another control terminal of driving circuit, driving and control circuit are for realizing to low frequency pulsating current charging circuit and high frequency arteries and veins
The state of the second power tube and the first power tube in streaming current discharge circuit controls；
Measured capacitance one end is connected to the output of low frequency pulsating current charging circuit and inputs with dither current discharge circuit
Between, measured capacitance other end connection control and driving circuit are with reference to ground.
Preferably, in the low frequency pulsating current charging circuit, the drain electrode of the second power tube is charged as low frequency pulsating electric current
Circuit input end, the second power tube source connect inductance one end, the second diode cathode, and the inductance other end is as low frequency pulsating electricity
Current charge circuit output end, the second diode anode connect DC source cathode, control and driving circuit with reference to ground, the second power tube
Grid is as low frequency pulsating current charging circuit control terminal.
Preferably as a kind of improvement of above scheme, in the low frequency pulsating current charging circuit, the conduct of inductance one end
Low frequency pulsating current charging circuit input terminal, the inductance other end is as low frequency pulsating current charging circuit output end, the two or two pole
Tube cathode connection DC source anode, the second diode anode connect the drain electrode of the second power tube, control and driving circuit reference ground, the
Two power tube sources connect DC source cathode, and the second power tube grid is as low frequency pulsating current charging circuit control terminal.
Preferably, in the dither current discharge circuit, transformer primary winding Same Name of Ends is as dither electricity
Electric circuit input end is banished, transformer primary winding different name end connects the drain electrode of the first power tube, and the first power tube grid is as high
Frequency pulsating current discharge circuit control terminal, the first power tube source connection control and driving circuit are with reference to ground, first diode sun
Pole, first diode cathode connect transformer secondary Motor Winding Same Name of Ends, and transformer secondary winding different name end is as dither electricity
Banish electric circuit output end, the both ends of power tube protection circuit be connected to transformer primary winding Same Name of Ends and different name end it
Between.
Preferably as a kind of improvement of above-mentioned dither current discharge circuit, the dither current electric discharge electricity
Lu Zhong, transformer primary winding Same Name of Ends is as dither current discharge circuit input terminal, transformer primary winding different name end
The drain electrode of the first power tube is connected, the first power tube grid is as dither current discharge circuit control terminal, the first power tube source
Pole connection control and driving circuit are with reference to ground, transformer secondary Motor Winding Same Name of Ends, transformer secondary winding different name end connection first
Diode anode, first diode cathode is as dither current discharge circuit output end, the both ends of power tube protection circuit
It is connected between the Same Name of Ends of transformer primary winding and different name end.
Preferably, power tube protection circuit is made of RCD circuit or active clamp circuit.
The scheme that the utility model is mentioned, is combined into 4 kinds of embodiments, and working principle carries out in a particular embodiment
It is described in detail, the working principle of comprehensive the utility model, the utility model overcomes electrolytic capacitor ripple test in the prior art
The deficiency of method, it has the advantage that:
(1) function of the charging of measured capacitance low frequency pulsating electric current, dither current electric discharge, real simulation electrolysis electricity are realized
The applicable cases of appearance；
(2) measured capacitance discharge energy feeds back to input power, small with testing power consumption, small in size, cost of suggesting plans
Low advantage.
Detailed description of the invention
Fig. 1 is the circuit diagram that the resistance-type ripple current of the prior art generates；
Fig. 2 is the circuit diagram that the high frequency ripple current of the prior art generates；
Fig. 3 is the circuit diagram of the DC charging of the prior art, dither current electric discharge；
Fig. 4 is the circuit diagram of the first embodiment of the utility model；
Fig. 5 is the simulation result diagram of the first embodiment of the utility model；
Fig. 6 is the simulation result charging process expanded view of the first embodiment of the utility model；
Fig. 7 is the simulation result discharge process expanded view of the first embodiment of the utility model；
Fig. 8 is the circuit diagram of the second embodiment of the utility model；
Fig. 9 is the circuit diagram of the 3rd embodiment of the utility model；
Figure 10 is the circuit diagram of the fourth embodiment of the utility model.
Specific embodiment
The inventive concept of the utility model is to be discharged by control low frequency pulsating current charging circuit and dither current
Two transformation of electrical energy circuits of circuit realize that the low frequency pulsating electric current charging of electrolytic capacitor, the true of dither current electric discharge are answered
With simulation, low frequency pulsating current charging circuit realizes that tested electrolytic capacitor carries out measured capacitance according to the double frequency of power-frequency voltage
Pulsating current charging, dither current discharge circuit realize under power-frequency voltage realize measured capacitance dither current
Electric discharge, while the energy feedback discharged tested electrolytic capacitor in high-frequency discharge process is significantly reduced to input power
The test energy consumption of electrolytic capacitor.
With reference to the accompanying drawings and embodiments, the utility model is illustrated.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
First embodiment
Fig. 4 is the circuit diagram of the utility model ripple current generation circuit first embodiment, and circuit includes DC source
Vin, low frequency pulsating current charging circuit, dither current discharge circuit, measured capacitance C1, input capacitance C2, control and drive
Dynamic circuit.Low frequency pulsating current charging circuit includes power tube Q2, inductance L1, diode D2, dither current discharge circuit
Including power tube Q1, diode D1, transformer, power tube protection circuit, transformer includes primary side winding and vice-side winding, each electricity
The connection relationship on road are as follows:
Low frequency pulsating current charging circuit input terminal connects the anode of DC source Vin, and the drain electrode with power tube Q2 simultaneously
It is connected；The cathode of the source electrode connection diode D2 of power tube Q2 and one end of inductance L1；The other end of inductance L1 is as low frequency arteries and veins
The output end of streaming current charging circuit is connected with the anode of measured capacitance C1；The anode connection DC source Vin's of diode D2 is negative
Pole, the cathode of measured capacitance C1, control and driving circuit are with reference to ground；Input capacitance C2 is connected in parallel on the both ends DC source Vin；High frequency arteries and veins
The input terminal of streaming current discharge circuit connects the output end of low frequency pulsating electric current charging main circuit and the primary side winding with transformer
Same Name of Ends, the second port of power tube protection circuit are connected；The leakage of transformer primary winding different name end connection power switch tube Q1
Pole, power tube protection circuit first port；The source electrode connection cathode of DC source Vin of power switch tube Q1, diode D1
Anode；The cathode of diode D1 is connected with the vice-side winding Same Name of Ends of transformer；The vice-side winding different name end of transformer is as high
The output end of frequency pulsating current discharge circuit is connected with the anode of DC source Vin；Control and driving circuit control port Vg1 and function
The grid of rate pipe Q1 is connected；Control and driving circuit control port Vg2 are connected with the grid of power tube Q2；Control and driving circuit
It is connected with reference to ground with the cathode of DC source Vin.
Power tube protection circuit in circuit is made of RCD circuit or active clamp circuit, for by the leakage of power tube Q1
Source electrode ceiling voltage carries out clamper, prevents power tube Q1 hourglass source electrode from overvoltage phenomenon occur, plays the role of protecting power tube Q1.
The working principle of the ripple generation circuit of the present embodiment is described as follows:
(1) the driving signal Vg2 of control and driving circuit is with 2 overtones bands of power-frequency voltage and to be less than 1ms service time
Power tube Q2 is controlled, realizes the charging of measured capacitance C1, low frequency pulsating current charging circuit works in Discontinuous Conduction mould
Formula, the expression formula of charging current are ic (t)=(Vin-Vc)/L1*t, and wherein Vin is DC source voltage, and Vc is measured capacitance end
Voltage；When power tube Q2 shutdown, the electric current of inductance L1 carries out afterflow through diode D2, is maintained to charging current and drops to
0, the charging current expression formula of freewheeling period is ic (t)=Ipk- (Vc)/L1*t, and wherein Ipk is the peak point current of inductance L1, Vc
For measured capacitance end voltage, the charging current ripple of low frequency is so obtained, the bridge rectifier pair of practical application is simulated
The charge characteristic of electrolytic capacitor, wherein inductance L1 also can avoid circuit and the impact of larger charging current occurs, and diode D2 is to electricity
Feel L1 and continuous current circuit is provided；
(2) the driving signal Vg1 of control and driving circuit controls power tube Q1 with high frequency (such as 65KHz), realizes
The electric discharge of electrolytic capacitor, and the discharge current of high frequency is obtained, the energy for simulating the transformation of electrical energy topology in practical application passes
Process is passed, and the energy feedback for electrolytic capacitor being discharged by flyback transformer realizes energy feedback function to input supply terminal.
Circuit test simulation result as shown in Figure 5 (in figure black shaded area be waveform intensively caused by), in figure
Simulation waveform symbol description: Vds is the drain-source voltage of power tube Q1, and Vc is electrolytic capacitor end voltage, and Ip is transformer primary side
Winding current, IIn are input current, and Ic is electric current in measured capacitance, and Is is electric current on transformer secondary diode D1, pass through sight
It examines known to the electric current in measured capacitance:
[t0, the t1] stage: input power charges through low frequency pulsating electric current charging main circuit to measured capacitance, in measured capacitance
Electric current Ic rapid increase, measured capacitance end voltage Vc rapid increase is maintained to the t1 moment, at this time electric current Ic and voltage Vc
Reach maximum；The stage measured capacitance also is carrying out carrying out high-frequency discharge
[t1, the t2] stage: electrolytic capacitor continues to high-frequency discharge, until the t2 moment.
Fig. 6 and Fig. 7 is respectively the simulation waveform expanded view of measured capacitance charge and discharge, and circuit is in the circulation proceeded as described above
Work.
Second embodiment
Fig. 8 is the circuit diagram of the utility model ripple current generation circuit second embodiment, not with first embodiment
With, in low frequency pulsating current charging circuit, low frequency pulsating current charging circuit input terminal connects the anode of DC source Vin,
And it is connected with one end of the cathode of diode D2 and inductance L1；The other end of inductance L1 is defeated as low frequency pulsating current charging circuit
It is positive out, and be connected with the anode of measured capacitance C1；The drain electrode of the anode connection power tube Q2 of diode D2, control driving circuit
Reference ground, power tube Q2 source electrode connection DC source Vin cathode.
Other circuit connecting relations and working principle of the present embodiment are identical as the first implementation, are not repeated herein.
3rd embodiment
Fig. 9 is the utility model ripple current generation circuit 3rd embodiment circuit diagram, is different from the first embodiment
: in dither current discharge circuit, the Same Name of Ends of transformer primary winding is as dither current discharge circuit
Input terminal, connects one end of power tube protection circuit, and the different name end connection power tube protection circuit of transformer primary winding is another
End, power tube Q1 drain electrode, power tube Q1 source electrode connection control driving circuit is with reference to ground, transformer secondary Motor Winding Same Name of Ends, transformation
Device vice-side winding different name end connects diode D1 anode, output end of the diode D1 cathode as dither current amplifying circuit
Connect the anode of DC source Vin.
Other circuit connecting relations of the present embodiment are identical with the first embodiment with working principle, are not repeated herein.
Fourth embodiment
Figure 10 is the utility model ripple current generation circuit fourth embodiment circuit diagram, is different from the first embodiment
: the connection relationship of each circuit are as follows:
In low frequency pulsating current charging circuit, low frequency pulsating current charging circuit input terminal connects the anode of DC source Vin,
And it is connected simultaneously with one end of the cathode of diode D2 and inductance L1；The other end of inductance L1 charges electric as low frequency pulsating electric current
Road output end is connected with the anode of measured capacitance C1；Drain electrode, control and the driving electricity of the anode connection power tube Q2 of diode D1
The reference ground on road, the cathode of the source electrode connection DC source Vin of power tube Q2.
In dither current discharge circuit, the Same Name of Ends of transformer primary winding is as dither current discharge circuit
Input terminal connection power tube protection circuit one end, transformer primary winding different name end connection power tube protection circuit it is another
End, power tube Q1 drain electrode, power tube Q1 source electrode connection control driving circuit is with reference to ground, transformer secondary Motor Winding Same Name of Ends, transformation
Device vice-side winding different name end connects diode D1 anode, output end of the diode D1 cathode as dither current amplifying circuit
Connect the anode of DC source Vin.
The working principle of the present embodiment and first embodiment are almost the same, therefore do not repeat herein.
The above is only the utility model preferred embodiment, the utility model those skilled in the art can also be right
Above-mentioned specific embodiment is changed and is modified.Therefore, the utility model is not limited to disclosed and described above specific
Control mode should also be as falling into the protection scope of the claims of the present utility model to some modifications and changes of the utility model
It is interior.In addition, these terms are merely for convenience of description although using some specific terms in this specification, it is not right
The utility model constitutes any restrictions.
Claims (6)
1. a kind of ripple current generation circuit, the ripple current for measured capacitance is tested, including DC source, first capacitor, quilt
Capacitor is surveyed, first capacitor both ends are connected in parallel on DC source both ends, and DC source is for providing DC pulse moving voltage, it is characterised in that: also
Including containing inductance, the second power tube, the second diode low frequency pulsating current charging circuit, contain transformer, the first power
Pipe, first diode, power tube protection circuit dither current discharge circuit, control and driving circuit, transformer include
Primary side winding and vice-side winding, connection relationship are as follows:
Low frequency pulsating current charging circuit input terminal connects DC source anode, and the connection of low frequency pulsating current charging circuit output end is high
Frequency pulsating current discharge circuit input terminal, dither current discharge circuit output end connect DC source anode, low frequency pulsating electricity
The connection control of current charge circuit control end and one control terminal of driving circuit, the connection control of dither current discharge circuit control terminal
And another control terminal of driving circuit, driving and control circuit are for realizing to low frequency pulsating current charging circuit and dither electricity
Flow the state control of the second power tube and the first power tube in discharge circuit；
Measured capacitance one end is connected between the output of low frequency pulsating current charging circuit and the input of dither current discharge circuit,
Measured capacitance other end connection control and driving circuit are with reference to ground.
2. ripple current generation circuit according to claim 1, it is characterised in that: the low frequency pulsating current charging circuit
In, the drain electrode of the second power tube is used as low frequency pulsating current charging circuit input terminal, and the second power tube source connects inductance one end, the
Two diode cathodes, the inductance other end connect direct current as low frequency pulsating current charging circuit output end, the second diode anode
Source cathode, control and driving circuit are with reference to ground, and the second power tube grid is as low frequency pulsating current charging circuit control terminal.
3. ripple current generation circuit according to claim 1, it is characterised in that: the low frequency pulsating current charging circuit
In, inductance one end is as low frequency pulsating current charging circuit input terminal, and the inductance other end is as low frequency pulsating current charging circuit
Output end, the second diode cathode connect DC source anode, and the second diode anode connects the drain electrode of the second power tube, control and drives
Dynamic circuit reference, the second power tube source connects DC source cathode, and the second power tube grid charges as low frequency pulsating electric current
Circuit control end.
4. ripple current generation circuit according to claim 1 or 2, it is characterised in that: the dither current electric discharge
In circuit, transformer primary winding Same Name of Ends is as dither current discharge circuit input terminal, transformer primary winding different name
End connection the first power tube drain electrode, the first power tube grid is as dither current discharge circuit control terminal, the first power tube
With reference to ground, first diode anode, first diode cathode connects transformer secondary winding for source electrode connection control and driving circuit
Same Name of Ends, transformer secondary winding different name end is as dither current discharge circuit output end, and the two of power tube protection circuit
End is connected between the Same Name of Ends of transformer primary winding and different name end.
5. ripple current generation circuit according to claim 1 or 2, it is characterised in that: the dither current electric discharge
In circuit, transformer primary winding Same Name of Ends is as dither current discharge circuit input terminal, transformer primary winding different name
End connection the first power tube drain electrode, the first power tube grid is as dither current discharge circuit control terminal, the first power tube
Source electrode connection control and driving circuit are with reference to ground, transformer secondary Motor Winding Same Name of Ends, transformer secondary winding different name end connection the
One diode anode, first diode cathode is as dither current discharge circuit output end, and the two of power tube protection circuit
End is connected between the Same Name of Ends of transformer primary winding and different name end.
6. ripple current generation circuit according to claim 1, it is characterised in that: the power tube protection circuit is by RCD
Circuit or active clamp circuit are constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821639975.9U CN208752488U (en) | 2018-10-10 | 2018-10-10 | A kind of ripple current generation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821639975.9U CN208752488U (en) | 2018-10-10 | 2018-10-10 | A kind of ripple current generation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208752488U true CN208752488U (en) | 2019-04-16 |
Family
ID=66085652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821639975.9U Withdrawn - After Issue CN208752488U (en) | 2018-10-10 | 2018-10-10 | A kind of ripple current generation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208752488U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109189140A (en) * | 2018-10-10 | 2019-01-11 | 广州金升阳科技有限公司 | A kind of ripple current generation circuit |
| EP4205272A4 (en) * | 2020-08-25 | 2024-05-29 | Astec Int Ltd | Bulk capacitor heating circuits in electrical power converters |
-
2018
- 2018-10-10 CN CN201821639975.9U patent/CN208752488U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109189140A (en) * | 2018-10-10 | 2019-01-11 | 广州金升阳科技有限公司 | A kind of ripple current generation circuit |
| CN109189140B (en) * | 2018-10-10 | 2024-02-13 | 广州金升阳科技有限公司 | Ripple current generation circuit |
| EP4205272A4 (en) * | 2020-08-25 | 2024-05-29 | Astec Int Ltd | Bulk capacitor heating circuits in electrical power converters |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109189140A (en) | A kind of ripple current generation circuit | |
| CN102497711B (en) | LED drive circuit and comprise the Switching Power Supply of this drive circuit | |
| CN102752940B (en) | High-efficiency LED (light-emitting diode) drive circuit and drive method thereof | |
| CN101789684B (en) | Power factor corrector | |
| CN102946199A (en) | Direct current insulation buck converter and matrix voltage detection circuit thereof | |
| CN101944843B (en) | Recovery-type harmonic suppression system at DC side of multi-pulse rectification system and method | |
| CN103618470A (en) | Photovoltaic grid-connection micro inverter and power decoupling control method | |
| CN105207476B (en) | A kind of high voltage DC transformers and its control method based on capacitance partial pressure structure | |
| CN102158105B (en) | High-power factor bidirectional single-stage full bridge converter and control method thereof | |
| CN107800312B (en) | A kind of output ripple and low pfc converter | |
| CN103269164B (en) | The quasi-single-stage high power factor circuit of former limit current constant control and device | |
| CN103066873A (en) | Novel voltage reduction type bridgeless Cuk power factor correction (PFC) circuit | |
| CN104779790A (en) | Switched inductance quasi-Z source DC-DC converter circuit | |
| CN105491728A (en) | Direct filtering type switching power supply | |
| CN204442176U (en) | A kind of switched inductors type accurate Z source DC-DC converter circuit | |
| CN201408996Y (en) | Three-phase input equal current-sharing controller with power factor correction | |
| CN108718106A (en) | A kind of wireless charging system for electric vehicle | |
| CN103647448B (en) | Integrated step-down-flyback type high power factor constant current circuit and device | |
| CN208752488U (en) | A kind of ripple current generation circuit | |
| CN102148566A (en) | Boost-type voltage balance converter | |
| CN102647083B (en) | Boost two-way voltage balance converter | |
| CN104753445A (en) | Solar power supply device | |
| CN203617902U (en) | Integrated buck-flyback type high power factor constant current circuit and device | |
| CN202940733U (en) | Direct current insulation buck converter and matrix voltage detection circuit thereof | |
| CN110266182A (en) | A kind of adaptive following controller of PFC output voltage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190416 Effective date of abandoning: 20240213 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190416 Effective date of abandoning: 20240213 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |