CN110289759A - A kind of power circuit generating negative pressure - Google Patents
A kind of power circuit generating negative pressure Download PDFInfo
- Publication number
- CN110289759A CN110289759A CN201910544382.7A CN201910544382A CN110289759A CN 110289759 A CN110289759 A CN 110289759A CN 201910544382 A CN201910544382 A CN 201910544382A CN 110289759 A CN110289759 A CN 110289759A
- Authority
- CN
- China
- Prior art keywords
- diode
- capacitor
- negative pressure
- circuit
- power circuit
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
- H02M3/071—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps adapted to generate a negative voltage output from a positive voltage source
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of power circuits for generating negative pressure, including pwm signal generation circuit, capacitor C1, diode D1 and diode D2, the signal output end of the pwm signal generation circuit connects capacitor C1, the cathode of the other end connection diode D1 of capacitor C1 and the anode of diode D2, the anode of diode D1 connects inductance L1, the anode of the other end connection diode D3 of inductance L1, capacitor C2 and voltage output end, the minus earth of diode D2, the minus earth of diode D3, the other end of capacitor C2 is grounded, the power circuit that the present invention generates negative pressure passes through on the basis of available circuit, " bridge is borrowed " pwm signal, it is from the pwm signal of " bridge is borrowed ", pass through the processing of circuit, isolate required negative pressure signal, negative voltage is generated to reach Purpose, circuit is simple, ingenious, practical.
Description
Technical field
The present invention relates to power technique fields, specifically a kind of power circuit for generating negative pressure.
Background technique
In contrast negative voltage is.We will have an object of reference first.For example: if we are in circuit
" ground " is as a reference point, that voltage higher than " ground " is positive voltage, and the voltage also lower than " ground " is negative voltage.Now with a kind of electricity
Source module can export simultaneously positive voltage and in this way negative voltage is exactly.Negative how much voltages can really be exported by being not to say that.Here
The negative phase for referring to voltage in other words polarity.
In electronic circuit, certain specific circuits will use negative supply voltage or positive-negative power voltage while use
The case where, this just has the special power circuit for generating negative voltage, such as transformer two-tap, exclusively with generation negative pressure collection
At circuit etc..Thus inevitably increase the cost of circuit and the volume of circuit (product).
Summary of the invention
It is mentioned above in the background art to solve the purpose of the present invention is to provide a kind of power circuit for generating negative pressure
Problem.
To achieve the above object, the invention provides the following technical scheme:
A kind of power circuit generating negative pressure, including pwm signal generation circuit, capacitor C1, diode D1 and diode D2,
The signal output end of the pwm signal generation circuit connects capacitor C1, the cathode of the other end connection diode D1 of capacitor C1 and
The anode of diode D2, the anode of diode D1 connect inductance L1, anode, the capacitor of the other end connection diode D3 of inductance L1
C2 and voltage output end, the minus earth of diode D2, the minus earth of diode D3, the other end ground connection of capacitor C2.
As further technical solution of the present invention: the diode D1 is rectifier diode.
As further technical solution of the present invention: the model 1N4001 of the diode D1.
As further technical solution of the present invention: the diode D2 is clamp diode.
As further technical solution of the present invention: the capacitor C1 is coupled capacitor.
As further technical solution of the present invention: pwm signal generation circuit uses UC2842AN type PWM chip.
Compared with prior art, the beneficial effects of the present invention are: the present invention generates the power circuit of negative pressure by from existing
On the basis of circuit, " bridge is borrowed " pwm signal, from the pwm signal of " bridge is borrowed ", by the processing of circuit, needed for isolating
The negative pressure signal wanted, to achieve the purpose that generate negative voltage, circuit is simple, ingenious, practical.
Detailed description of the invention
Fig. 1 is overall schematic of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1: referring to Fig. 1, it is a kind of generate negative pressure power circuit, including pwm signal generation circuit, capacitor C1,
The model 1N4001 of diode D1 and diode D2, diode D1, pole pipe D2 are clamp diode, and capacitor C1 is coupling electricity
Hold, the signal output end of the pwm signal generation circuit connects capacitor C1, the cathode of the other end connection diode D1 of capacitor C1
With the anode of diode D2, the anode of diode D1 connects inductance L1, anode, the electricity of the other end connection diode D3 of inductance L1
Hold C2 and voltage output end, the minus earth of diode D2, the minus earth of diode D3, the other end ground connection of capacitor C2.It is logical
The pwm signal for crossing pwm signal generation circuit " bridge is borrowed " output is coupled by " C1 " blocking, becomes the friendship to rise and fall to " ground "
Varying signal.It is crossed and logical negative through " D1 " positive nonpassage of signal, the signal of negative alternation is added in one end of inductance " L1 ".Another
End can obtain a straight direct current negative pressure at the both ends of capacitor " C2 " because there is the charge and discharge electro ultrafiltration of capacitor " C2 ".Reach this
The function of circuit." D2 " is clamper tube, circuit output voltage: VOUT=(VPPpwm/2-0.3) x1.414.
It is in place of embodiment 2, with the difference of embodiment 1, pwm signal generation circuit used by the design can be
The available circuit of pwm signal or special pwm signal generation circuit, such as UC2842AN type PWM chip.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of power circuit for generating negative pressure, including pwm signal generation circuit, capacitor C1, diode D1 and diode D2,
It is characterized in that, the signal output end of the pwm signal generation circuit connects capacitor C1, and the other end of capacitor C1 connects diode D1
Cathode and diode D2 anode, the anode of diode D1 connects inductance L1, the other end connection diode D3's of inductance L1
Anode, capacitor C2 and voltage output end, the minus earth of diode D2, the minus earth of diode D3, the other end of capacitor C2
Ground connection.
2. a kind of power circuit for generating negative pressure according to claim 1, which is characterized in that the diode D1 is rectification
Diode.
3. a kind of power circuit for generating negative pressure according to claim 1, which is characterized in that the model of the diode D1
For 1N4001.
4. a kind of power circuit for generating negative pressure according to claim 1, which is characterized in that the diode D2 is clamper
Diode.
5. a kind of power circuit for generating negative pressure according to claim 1 to 4, which is characterized in that the capacitor C1 is
Coupled capacitor.
6. a kind of power circuit for generating negative pressure according to claim 1, which is characterized in that the pwm signal generates electricity
Road uses UC2842AN type PWM chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910544382.7A CN110289759A (en) | 2019-06-21 | 2019-06-21 | A kind of power circuit generating negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910544382.7A CN110289759A (en) | 2019-06-21 | 2019-06-21 | A kind of power circuit generating negative pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110289759A true CN110289759A (en) | 2019-09-27 |
Family
ID=68004266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910544382.7A Pending CN110289759A (en) | 2019-06-21 | 2019-06-21 | A kind of power circuit generating negative pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110289759A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111326054A (en) * | 2020-04-02 | 2020-06-23 | 中国人民解放军陆军工程大学 | Power supply circuit for electric power teaching |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414787A (en) * | 2007-10-17 | 2009-04-22 | 鸿富锦精密工业（深圳）有限公司 | Circuit for generating negative voltage |
| CN203193506U (en) * | 2013-01-31 | 2013-09-11 | 深圳洪迪实业有限公司 | Positive and negative voltage generation circuit |
| CN204615628U (en) * | 2015-05-26 | 2015-09-02 | 广州视源电子科技股份有限公司 | Multistage negative pressure generating circuit |
| CN106685217A (en) * | 2017-03-07 | 2017-05-17 | 广州龙之杰科技有限公司 | Positive and negative power supply output control apparatus and method |
-
2019
- 2019-06-21 CN CN201910544382.7A patent/CN110289759A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414787A (en) * | 2007-10-17 | 2009-04-22 | 鸿富锦精密工业（深圳）有限公司 | Circuit for generating negative voltage |
| CN203193506U (en) * | 2013-01-31 | 2013-09-11 | 深圳洪迪实业有限公司 | Positive and negative voltage generation circuit |
| CN204615628U (en) * | 2015-05-26 | 2015-09-02 | 广州视源电子科技股份有限公司 | Multistage negative pressure generating circuit |
| CN106685217A (en) * | 2017-03-07 | 2017-05-17 | 广州龙之杰科技有限公司 | Positive and negative power supply output control apparatus and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111326054A (en) * | 2020-04-02 | 2020-06-23 | 中国人民解放军陆军工程大学 | Power supply circuit for electric power teaching |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190927 |