CN205509874U - Anti harmonic interference DC power supply circuit - Google Patents
Anti harmonic interference DC power supply circuit Download PDFInfo
- Publication number
- CN205509874U CN205509874U CN201620128343.0U CN201620128343U CN205509874U CN 205509874 U CN205509874 U CN 205509874U CN 201620128343 U CN201620128343 U CN 201620128343U CN 205509874 U CN205509874 U CN 205509874U
- Authority
- CN
- China
- Prior art keywords
- electric capacity
- resistance
- inductance
- connects
- power supply
- 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.)
- Active
Links
- 239000004065 semiconductor Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 6
- 239000007795 chemical reaction product Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Rectifiers (AREA)
Abstract
The utility model discloses an anti harmonic interference DC power supply circuit, including inductance L1, rectifier bridge T, resistance R7 and electric capacity C8, electric capacity C8 and 220V alternating current are connected to resistance R7's one end, and electric capacity C8 and rectifier bridge T's port 1 is connected to resistance R7's the other end, and electric capacity C1 and inductance L1 are connected to rectifier bridge T's port 2, and electric capacity C2, electric capacity C3 and inductance L3 are connected to inductance L1's the other end, and electric capacity L2 and rectifier bridge T's port 4 is connected to electric capacity C1's the other end. The utility model discloses anti harmonic interference DC power supply circuit simple structure, the mode that adopts the resistance -capacitance to step down steps down, has left out the transformer structure, reduces power supply size to set up two pi filters, removal harmonic disturbs, and the circuit utilizes thermistor to increase soft start and short -circuit protection's function simultaneously, therefore has the advantage of various, the small and stable performance of function.
Description
Technical field
This utility model relates to a kind of power circuit, a kind of anti-harmonic wave interference DC power supply circuit.
Background technology
Along with improving constantly of people's living standard, electronic equipment has become as a requisite part in life, the most various
Household electrical appliance bring great convenience to the life of people, work, and this kind of electronic installation has been desirable that precision is higher, electric current
Bigger constant voltage dc source.The DC source of existing market is of a great variety, and its mid and low-end products are the most, although low-end product phase
High-end product is had the advantage of price, but quality is the most as one wishes, common power supply all exist function singleness, life-span short,
Interference free performance difference etc. defect, although and high-end product reliable in quality, safety and stability, but price is high also allows people hang back.
Therefore need to be improved.
Utility model content
The purpose of this utility model is to provide a kind of anti-harmonic wave to disturb DC power supply circuit, to solve proposition in above-mentioned background technology
Problem.
For achieving the above object, the following technical scheme of this utility model offer:
A kind of anti-harmonic wave interference DC power supply circuit, including inductance L1, rectifier bridge T, resistance R7 and electric capacity C8, described resistance R7
One end connect electric capacity C8 and 220V alternating current, the other end of resistance R7 connects the port 1 of electric capacity C8 and rectifier bridge T, rectification
The port 2 of bridge T connects electric capacity C1 and inductance L1, and the other end of inductance L1 connects electric capacity C2, electric capacity C3 and inductance L3, electricity
The other end holding C1 connects the port 4 of electric capacity L2 and rectifier bridge T, and the other end of inductance L2 connects the other end of electric capacity C2, electricity
The other end holding C4 and inductance L4, electric capacity C4 connects the other end and the ground of electric capacity C3, the other end of inductance L3 connect inductance L5,
The other end of electric capacity C5 and resistance R3, resistance R3 connects the another of the other end of electric capacity C5, the other end of inductance L4 and inductance L5
One end, the other end of inductance L5 connects the other end of resistance R1, electric capacity C7 and load A, resistance R1 and connects resistance R2, electric capacity
C6, the negative electrode of diode D1, the colelctor electrode of audion V1 and the grid of metal-oxide-semiconductor Q1, the anode of diode D1 connects electric capacity
The other end of C6, electric capacity C9, the other end of resistance R2, resistance R4, resistance R6, the other end of inductance L5, audion V1
Emitter stage and the drain electrode of metal-oxide-semiconductor Q1, the base stage of audion V1 connects the other end and the anode of diode D2 of resistance R4, two
The negative electrode of pole pipe D2 connects the other end of resistance R5, resistance R5 and connects the other end of electric capacity C7, the other end of electric capacity C9, electricity
The other end of resistance R6, the other end of load A and the source electrode of metal-oxide-semiconductor Q1 ground connection.
As preferred version of the present utility model: described resistance R6 is negative tempperature coefficient thermistor.
Compared with prior art, the beneficial effects of the utility model are: the interference DC power supply circuit structure letter of this utility model anti-harmonic wave
Single, use the mode of resistance-capacitance depressurization to carry out blood pressure lowering, eliminate transformer device structure, reduce power volume, and be provided with double π type filter
Ripple device, harmonic carcellation disturbs, and circuit utilizes critesistor to add the function of soft start and short-circuit protection simultaneously, therefore has function
Various, volume is little and the advantage of stable performance.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of anti-harmonic wave interference DC power supply circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments wholely.Base
Embodiment in this utility model, those of ordinary skill in the art obtained under not making creative work premise all its
His embodiment, broadly falls into the scope of this utility model protection.
Referring to Fig. 1, in this utility model embodiment, a kind of anti-harmonic wave interference DC power supply circuit, including inductance L1, rectifier bridge
T, resistance R7 and electric capacity C8, one end of described resistance R7 connects electric capacity C8 and 220V alternating current, and the other end of resistance R7 is even
Connecing the port 1 of electric capacity C8 and rectifier bridge T, the port 2 of rectifier bridge T connects electric capacity C1 and inductance L1, the other end of inductance L1
The other end connecting electric capacity C2, electric capacity C3 and inductance L3, electric capacity C1 connects the port 4 of electric capacity L2 and rectifier bridge T, inductance L2
The other end connect the other end of electric capacity C2, electric capacity C4 and inductance L4, the other end of electric capacity C4 connects the other end of electric capacity C3
And ground, the other end of inductance L3 connects the other end of inductance L5, electric capacity C5 and resistance R3, resistance R3 and connects the another of electric capacity C5
One end, the other end of inductance L4 and the other end of inductance L5, the other end of inductance L5 connects resistance R1, electric capacity C7 and load A,
The other end of resistance R1 connects resistance R2, electric capacity C6, the negative electrode of diode D1, the colelctor electrode of audion V1 and metal-oxide-semiconductor Q1
Grid, the anode of diode D1 connects the other end of electric capacity C6, electric capacity C9, the other end of resistance R2, resistance R4, resistance
R6, the other end of inductance L5, the emitter stage of audion V1 and the drain electrode of metal-oxide-semiconductor Q1, the base stage of audion V1 connects resistance
The other end of R4 and the anode of diode D2, the negative electrode of diode D2 connects the other end of resistance R5, resistance R5 and connects electric capacity
The other end of C7, the other end of electric capacity C9, the other end of resistance R6, the other end of load A and the source electrode of metal-oxide-semiconductor Q1 also connect
Ground.
Resistance R6 is negative tempperature coefficient thermistor.
Operation principle of the present utility model is: the capacitance-resistance voltage reduction circuit fall that 220V line voltage forms through resistance R7 and electric capacity C8
Enter rectifier bridge T after pressure and carry out full-bridge rectification, double π type filter networks of C1, L1-L4, C2, C3 composition in circuit, mainly
It is the electromagnetic noise to input power and noise signal suppresses, prevent from, to power supply disturbance, being also prevented from what power supply itself produced simultaneously
Electrical network is disturbed by high frequency spurs.When circuit opens moment, C5 to be charged, owing to immediate current is big, add R6 (critesistor)
Just can effectively prevent surge current.Because instantaneous energy consumes entirely on R6 resistance, after after certain time, temperature raises, R6 resistance subtracts
Little, the energy that at this moment it consumes is the least, and late-class circuit can normally work.Alternating voltage, after Q1 rectification, obtains after C5 filters
To the purest DC voltage.If C5 capacity diminishes, the AC ripple of output will increase.C3, C4 are safety electric capacity, L2,
L3 is differential mode inductance.R1, R2, R3, D1, C6, Q1, D2, R4, R5, Q2, R6, C7 form anti-surge circuit.Rising
The moment of machine, owing to the existence Q2 of C6 is not turned on, electric current constitutes loop through R6.When the voltage on C6 is charged to the voltage stabilizing value of D1
Time Q2 conducting.If C8 electric leakage or late-class circuit short circuit phenomenon, the pressure drop that the immediate current in start produces on R6 increases,
V1 conducting makes Q1 not have grid voltage to be not turned on, and R6 will burn in the shortest time, to protect late-class circuit.
Claims (2)
1. an anti-harmonic wave interference DC power supply circuit, including inductance L1, rectifier bridge T, resistance R7 and electric capacity C8, its feature exists
In, one end of described resistance R7 connects electric capacity C8 and 220V alternating current, and the other end of resistance R7 connects electric capacity C8 and rectification
The port 1 of bridge T, the port 2 of rectifier bridge T connects electric capacity C1 and inductance L1, and the other end of inductance L1 connects electric capacity C2, electricity
The other end holding C3 and inductance L3, electric capacity C1 connects the port 4 of electric capacity L2 and rectifier bridge T, and the other end of inductance L2 connects
The other end of electric capacity C2, electric capacity C4 and inductance L4, the other end of electric capacity C4 connects the other end and ground, the inductance of electric capacity C3
The other end of L3 connects the other end of inductance L5, electric capacity C5 and resistance R3, resistance R3 and connects the other end of electric capacity C5, electricity
The other end of sense L4 and the other end of inductance L5, the other end of inductance L5 connects resistance R1, electric capacity C7 and load A, resistance
The other end of R1 connects resistance R2, electric capacity C6, the negative electrode of diode D1, the colelctor electrode of audion V1 and metal-oxide-semiconductor Q1
Grid, the anode of diode D1 connects the other end of electric capacity C6, electric capacity C9, the other end of resistance R2, resistance R4, electricity
Resistance R6, the other end of inductance L5, the emitter stage of audion V1 and the drain electrode of metal-oxide-semiconductor Q1, the base stage of audion V1 connects
The other end of resistance R4 and the anode of diode D2, the negative electrode of diode D2 connects the other end of resistance R5, resistance R5 even
Meet the other end of electric capacity C7, the other end of electric capacity C9, the other end of resistance R6, the other end of load A and metal-oxide-semiconductor Q1
Source electrode and ground connection.
Anti-harmonic wave the most according to claim 1 interference DC power supply circuit, it is characterised in that described resistance R6 is negative temperature
Coefficient resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620128343.0U CN205509874U (en) | 2016-02-19 | 2016-02-19 | Anti harmonic interference DC power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620128343.0U CN205509874U (en) | 2016-02-19 | 2016-02-19 | Anti harmonic interference DC power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205509874U true CN205509874U (en) | 2016-08-24 |
Family
ID=56724459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620128343.0U Active CN205509874U (en) | 2016-02-19 | 2016-02-19 | Anti harmonic interference DC power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205509874U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107911012A (en) * | 2018-01-12 | 2018-04-13 | 成都互聚科技有限公司 | A kind of electric power system based on computer communication technology design |
| CN107920137A (en) * | 2018-01-12 | 2018-04-17 | 成都互聚科技有限公司 | A kind of safe communication system |
-
2016
- 2016-02-19 CN CN201620128343.0U patent/CN205509874U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107911012A (en) * | 2018-01-12 | 2018-04-13 | 成都互聚科技有限公司 | A kind of electric power system based on computer communication technology design |
| CN107920137A (en) * | 2018-01-12 | 2018-04-17 | 成都互聚科技有限公司 | A kind of safe communication system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203688682U (en) | Energy saving electronic load for aging inverter | |
| CN205610297U (en) | Energy -conservation automatic control circuit that charges | |
| CN205509874U (en) | Anti harmonic interference DC power supply circuit | |
| WO2019080359A1 (en) | Input detection protection circuit and alternating current electrical ballast for hid lamp | |
| CN205544520U (en) | Automatic energy -conserving charging circuit of pressure regulating | |
| CN202634752U (en) | Ripple filtering circuit for high-efficiency light-emitting diode (LED) constant current source | |
| CN205490111U (en) | Anti harmonic interference DC power supply circuit | |
| CN101841955A (en) | General illumination LED drive circuit | |
| CN205407611U (en) | Multi -functional constant voltage power circuit | |
| CN201813587U (en) | Universal lighting LED driving circuit | |
| CN206595912U (en) | A kind of inverter pre-driver circuitry controlled with overcurrent protection | |
| CN102695347B (en) | Power supply circuit for electronic ballast control chip | |
| CN204068687U (en) | A kind of APFC | |
| CN207782677U (en) | Capacitance-resistance full-wave rectifying circuit | |
| CN203968465U (en) | A kind of simple great power LED lamp driving power source efficiently | |
| CN205489479U (en) | Low -cost safety protection power | |
| CN205960977U (en) | Multi -functional DC power supply controller | |
| CN206775383U (en) | A kind of power circuit with fictitious load | |
| CN206908530U (en) | A kind of integral type emergency power supply inverter | |
| CN202652055U (en) | Electrolytic capacitor charging circuit | |
| CN201657462U (en) | Drive circuit for electrodeless lamp | |
| CN205544913U (en) | Anti -interference steady voltage DC power supply controller | |
| CN102752896A (en) | Ripple filter circuit of high-efficiency light emitting diode (LED) constant current source | |
| CN206023207U (en) | A kind of Intelligent sewing machine with power input electromagnetic compatible protective function | |
| CN205305192U (en) | Energy -conserving circuit of new efficiency standard of ultralow stand -by power consumption of high power factor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |