CN217215960U - Lightning protection multifunctional constant-voltage constant-current control circuit - Google Patents
Lightning protection multifunctional constant-voltage constant-current control circuit Download PDFInfo
- Publication number
- CN217215960U CN217215960U CN202122651886.4U CN202122651886U CN217215960U CN 217215960 U CN217215960 U CN 217215960U CN 202122651886 U CN202122651886 U CN 202122651886U CN 217215960 U CN217215960 U CN 217215960U
- Authority
- CN
- China
- Prior art keywords
- electrically connected
- unit
- resistor
- voltage
- triode
- 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
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a multi-functional constant voltage constant current control circuit of lightning protection, including lightning protection unit, vary voltage unit, rectifier unit, first filter unit, second filter unit, first reference voltage produce unit, second reference voltage and produce unit, constant current the control unit and constant voltage the control unit, the lightning protection unit with vary voltage the unit electricity and connect, the vary voltage unit with the rectifier unit electricity is connected, the rectifier unit with first filter unit electricity is connected, first filter unit with first reference voltage produces the unit electricity and connects, first reference voltage produce the unit with the constant current the control unit electricity is connected, the constant current the control unit with second reference voltage produces the unit electricity and connects, second reference voltage produce the unit with the constant voltage the control unit electricity is connected. The utility model has the advantages of simple structure and low cost.
Description
Technical Field
The utility model relates to a power control circuit technical field, in particular to multi-functional constant voltage constant current control circuit of lightning protection.
Background
With the development of electronic technology, particularly after the electronic computer technology is applied to various industrial and scientific research fields, various electronic devices require stable direct-current constant-voltage power supplies for power supply, the direct power supply of a power grid cannot meet the requirement, and the problem is solved due to the appearance of the direct-current constant-voltage power supplies. At present, the development of a direct-current constant-voltage power supply is faster, the direct-current constant-voltage power supply is various in variety, and different functions and applications are very wide. Many electrical appliances in our daily life contain dc power supplies. The direct current constant voltage power supply is easy to design, configure, stabilize and adjust, and along with the continuous development of electric appliances, the application of the direct current constant voltage power supply is more. However, the conventional constant-current constant-voltage control circuit has a complex structure and high cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be, provide a simple structure and with low costs multi-functional constant voltage constant current control circuit of lightning protection.
The utility model provides a multi-functional constant voltage constant current control circuit of lightning protection, including lightning protection unit, vary voltage unit, rectifier unit, first filter unit, second filter unit, first reference voltage produce unit, second reference voltage and produce unit, constant current the control unit and constant voltage the control unit, the lightning protection unit with vary voltage the unit electricity and connect, the vary voltage unit with the rectifier unit electricity is connected, the rectifier unit with first filter unit electricity is connected, first filter unit with first reference voltage produces the unit electricity and connects, first reference voltage produce the unit with the constant current the control unit electricity is connected, the constant current the control unit with second reference voltage produces the unit electricity and connects, second reference voltage produce the unit with the constant voltage the control unit electricity is connected.
In one embodiment, the first reference voltage generating unit includes a first resistor and a first voltage regulator tube, a first end of the first resistor is electrically connected to the first filtering unit, a second end of the first resistor is electrically connected to the constant current control unit, a first end of the first voltage regulator tube is electrically connected to a second end of the first resistor, and a second end of the first voltage regulator tube is electrically connected to the first filtering unit.
In one embodiment, the constant current control unit comprises a second resistor, a third resistor, a first triode, a second triode, a third triode and a potentiometer, wherein a first end of the second resistor is electrically connected with a second end of the first resistor, and a second end of the second resistor is electrically connected with an emitter of the first triode; the first end of the third resistor is electrically connected with the first end of the potentiometer, the second end of the third resistor is grounded, and the second end of the potentiometer is electrically connected with the second end of the second resistor;
the collector of the first triode is electrically connected with the base of the second triode, the collector of the second triode is electrically connected with the base of the third triode, the emitter of the second triode is electrically connected with the second reference voltage generating unit, and the emitter of the third triode and the base of the first triode are grounded.
In one embodiment, the second reference voltage generating unit includes a fourth resistor and a second voltage regulator, a first end of the fourth resistor is electrically connected to the first filtering unit, a second end of the fourth resistor is electrically connected to an emitter of the second triode, a first end of the second voltage regulator is electrically connected to a second end of the fourth resistor, and a second end of the second voltage regulator is grounded.
In one embodiment, the constant voltage control unit comprises a comparator, a sliding rheostat, a fifth resistor, a fourth triode and a fifth triode, wherein a positive input end of the comparator is electrically connected with the first end of the second voltage regulator tube, a negative input end of the comparator is electrically connected with the first end of the sliding rheostat, and an output end of the comparator is electrically connected with a base electrode of the fourth triode; the second end of the sliding rheostat is electrically connected with the collector of the fifth triode, the third end of the sliding rheostat is electrically connected with the first end of the fifth resistor, and the second end of the fifth resistor is grounded; an emitting electrode of the fourth triode is electrically connected with a first end of the fourth resistor, a collecting electrode of the fourth triode is electrically connected with a base electrode of the fifth triode, and an emitting electrode of the fifth triode is electrically connected with an emitting electrode of the fourth triode.
In one embodiment, the lightning protection unit comprises a first fuse, a second fuse, a first capacitor and a sixth resistor, wherein a first end of the first fuse is used for being electrically connected with a power supply, and a second end of the first fuse is electrically connected with a first end of the second fuse; the first end of the second fuse is electrically connected with the first end of the sixth resistor, and the second end of the second fuse is electrically connected with the voltage transformation unit; the first end of the first capacitor is electrically connected with the second end of the second fuse, and the second end of the first capacitor is electrically connected with the second ends of the transformation unit and the sixth resistor.
In one embodiment, the sixth resistor is a varistor.
In one embodiment, the first filtering unit includes a second capacitor electrically connected to the rectifying unit.
In one embodiment, the second filtering unit includes a third capacitor electrically connected to the constant voltage control unit
The utility model discloses following beneficial effect has: the utility model discloses a lightning protection unit, vary voltage unit, rectifier unit, first filtering unit, second filtering unit, first reference voltage produce unit, second reference voltage produce the cooperation between unit, constant current control unit and the constant voltage control unit, and it not only realizes required constant current constant voltage output, the lightning protection that moreover can be fine. The utility model has the advantages of simple structure and low cost.
Drawings
Fig. 1 is a circuit diagram of the lightning protection multifunctional constant voltage and constant current control circuit of the utility model.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples. It should be noted that, if there is no conflict, the embodiments and various features in the embodiments of the present invention may be combined with each other, and all are within the scope of the present invention.
Referring to fig. 1, the present invention provides a lightning protection multifunctional constant voltage and constant current control circuit, which includes a lightning protection unit 1, a voltage transformation unit 2, a rectification unit 3, a first filtering unit 4, a second filtering unit 5, a first reference voltage generation unit 6, a second reference voltage generation unit 7, a constant current control unit 8, and a constant voltage control unit 9, the lightning protection unit 1 is electrically connected with the transformation unit 2, the transformation unit 2 is electrically connected with the rectification unit 3, the rectifying unit 3 is electrically connected with the first filtering unit 4, the first filtering unit 4 is electrically connected with the first reference voltage generating unit 6, the first reference voltage generation unit 6 is electrically connected with the constant current control unit 8, the constant current control unit 8 is electrically connected with the second reference voltage generation unit 7, and the second reference voltage generation unit 7 is electrically connected with the constant voltage control unit 9.
The lightning protection unit 1 comprises a first fuse F1, a second fuse F2, a first capacitor C1 and a sixth resistor R6, wherein the first end of the first fuse F1 is used for being electrically connected with a power supply, and the second end of the first fuse F1 is electrically connected with the first end of the second fuse F2. A first terminal of the second fuse F2 is electrically connected to a first terminal of the sixth resistor R6, and a second terminal of the second fuse F2 is electrically connected to the transforming unit 2. A first end of the first capacitor C1 is electrically connected to a second end of the second fuse F2, and a second end of the first capacitor C1 is electrically connected to the transforming unit 2 and a second end of the sixth resistor R6.
In this embodiment, the sixth resistor R6 is a voltage dependent resistor. When the sudden high voltage is caused by lightning strike in severe weather such as rainy days, the piezoresistor can be decompressed, and in addition, when the voltage is higher than a preset value, the first fuse F1 and the second fuse F2 are fused, so that the electric equipment RL can be protected. In addition, the voltage signal supplied to the transforming unit 2 is smoothed by filtering through the first capacitor C1. The voltage transforming unit 2 and the rectifying unit 3 are prior art, and their structures are not described herein again.
The first filtering unit 4 includes a second capacitor C2, and the second capacitor C2 is electrically connected to the rectifying unit 3, and is configured to filter noise output by the rectifying unit 3. The first reference voltage generating unit 6 is configured to provide a reference voltage for the constant current unit, and includes a first resistor R1 and a first voltage regulator tube D1, a first end of the first resistor R1 is electrically connected to the first filtering unit 4, a second end of the first resistor R1 is electrically connected to the constant current control unit 8, a first end of the first voltage regulator tube D1 is electrically connected to a second end of the first resistor R1, and a second end of the first voltage regulator tube D1 is electrically connected to the first filtering unit.
The constant current control unit 8 comprises a second resistor R2, a third resistor R3, a first triode Q1, a second triode Q2, a third triode Q3 and a potentiometer RT, wherein a first end of the second resistor R2 is electrically connected with a second end of the first resistor R1, and a second end of the second resistor R2 is electrically connected with an emitter of the first triode Q1. The first end of the third resistor R3 is electrically connected with the first end of the potentiometer RT, the second end of the third resistor R3 is grounded, and the second end of the potentiometer RT is electrically connected with the second end of the second resistor R2.
A collector of the first transistor Q1 is electrically connected to a base of the second transistor Q2, a collector of the second transistor Q2 is electrically connected to a base of the third transistor, an emitter of the second transistor Q2 is electrically connected to the second reference voltage generating unit 7, and an emitter of the third transistor Q3 and a base of the first transistor Q1 are grounded.
The second reference voltage generating unit 7 is configured to provide a reference voltage for the constant voltage unit, and includes a fourth resistor R4 and a second regulator tube D2, a first end of the fourth resistor R4 is electrically connected to the first filtering unit 4, a second end of the fourth resistor R4 is electrically connected to an emitter of the second triode Q2, a first end of the second regulator tube D2 is electrically connected to a second end of the fourth resistor R4, and a second end of the second regulator tube D2 is grounded.
The constant voltage control unit 9 includes a comparator U, a sliding rheostat RP, a fifth resistor R5, a fourth triode Q4 and a fifth triode Q5, a forward input end of the comparator U is electrically connected with the first end of the second voltage regulator tube D2, a reverse input end of the comparator U is electrically connected with the first end of the sliding rheostat RP, and an output end of the comparator U is electrically connected with a base of the fourth triode Q4. The second end of the sliding rheostat RP is electrically connected with the collector of the fifth triode Q5, and the third end of the sliding rheostat RP is electrically connected with the first end of the fifth resistor R5. The output current can be adjusted by the slide rheostat RP, so that different application scenes can be adapted.
The second end of the fifth resistor R5 is grounded. An emitter of the fourth triode Q4 is electrically connected with a first end of the fourth resistor R4, a collector of the fourth triode Q4 is electrically connected with a base of the fifth triode Q5, and an emitter of the fifth triode Q5 is electrically connected with an emitter of the fourth triode Q4. The second filter unit 5 includes a third capacitor electrically connected to the constant voltage control unit 9, so that the current and voltage output to the electric device RL are kept stable. When the resistance of the electric equipment RL changes, for example, the electric equipment RL decreases, the voltage at two ends of the electric equipment RL decreases, the voltage sampled at the inverting end of the comparator U decreases, and the sampling voltage at the non-inverting end of the comparator U does not change, so that the output voltage of the comparator U increases, the current of the electric equipment increases, and the purpose of constant current is achieved.
To sum up, the utility model discloses a lightning protection unit 1, vary voltage unit 2, rectifier unit 3, first filter unit 4, second filter unit 5, first reference voltage produce unit 6, second reference voltage produce unit 7, constant current control unit 8 and the constant voltage control unit 9 between the cooperation, it not only realizes required constant current constant voltage output, the lightning protection that moreover can be fine. The utility model has the advantages of simple structure and low cost.
It is right above the utility model provides a multi-functional constant voltage constant current control circuit of lightning protection has carried out detailed introduction, and it is right to have used specific individual example herein the utility model discloses a principle and implementation mode have been elucidated, and the description of above embodiment is only used for helping understanding the utility model discloses a method and core thought thereof. Meanwhile, for those skilled in the art, the idea of the present invention may be changed in the specific embodiments and the application range. To sum up, this description content only does the embodiment of the utility model, not therefore the restriction the patent scope of the utility model, all utilize the equivalent structure or the equivalent flow transform that the content of the description and the attached drawing was done, or directly or indirectly use in other relevant technical field, all the same reason is included in the patent protection scope of the utility model, should not be understood as right the utility model discloses a restriction.
Claims (9)
1. A lightning protection multifunctional constant-voltage constant-current control circuit is characterized by comprising a lightning protection unit, a voltage transformation unit, a rectification unit, a first filtering unit, a second filtering unit, a first reference voltage generation unit, a second reference voltage generation unit, a constant-current control unit and a constant-voltage control unit, wherein the lightning protection unit is electrically connected with the voltage transformation unit, the voltage transformation unit is electrically connected with the rectification unit, the rectification unit is electrically connected with the first filtering unit, the first filtering unit is electrically connected with the first reference voltage generation unit, the first reference voltage generation unit is electrically connected with the constant-current control unit, the constant-current control unit is electrically connected with the second reference voltage generation unit, and the second reference voltage generation unit is electrically connected with the constant-voltage control unit.
2. The lightning protection multifunctional constant voltage and constant current control circuit according to claim 1, wherein the first reference voltage generation unit comprises a first resistor and a first voltage regulator tube, a first end of the first resistor is electrically connected to the first filtering unit, a second end of the first resistor is electrically connected to the constant current control unit, a first end of the first voltage regulator tube is electrically connected to a second end of the first resistor, and a second end of the first voltage regulator tube is electrically connected to the first filtering unit.
3. The lightning protection multifunctional constant voltage and constant current control circuit according to claim 2, wherein the constant current control unit comprises a second resistor, a third resistor, a first triode, a second triode, a third triode and a potentiometer, a first end of the second resistor is electrically connected with a second end of the first resistor, and a second end of the second resistor is electrically connected with an emitter of the first triode; the first end of the third resistor is electrically connected with the first end of the potentiometer, the second end of the third resistor is grounded, and the second end of the potentiometer is electrically connected with the second end of the second resistor;
the collector of the first triode is electrically connected with the base of the second triode, the collector of the second triode is electrically connected with the base of the third triode, the emitter of the second triode is electrically connected with the second reference voltage generation unit, and the emitter of the third triode and the base of the first triode are grounded.
4. The lightning protection multifunctional constant voltage and constant current control circuit according to claim 3, wherein the second reference voltage generating unit comprises a fourth resistor and a second voltage regulator tube, a first end of the fourth resistor is electrically connected to the first filtering unit, a second end of the fourth resistor is electrically connected to an emitter of the second triode, a first end of the second voltage regulator tube is electrically connected to a second end of the fourth resistor, and a second end of the second voltage regulator tube is grounded.
5. The lightning protection multifunctional constant voltage and constant current control circuit according to claim 4, wherein the constant voltage control unit comprises a comparator, a sliding rheostat, a fifth resistor, a fourth triode and a fifth triode, a forward input end of the comparator is electrically connected with the first end of the second voltage regulator tube, a reverse input end of the comparator is electrically connected with the first end of the sliding rheostat, and an output end of the comparator is electrically connected with a base of the fourth triode; the second end of the sliding rheostat is electrically connected with the collector electrode of the fifth triode, the third end of the sliding rheostat is electrically connected with the first end of the fifth resistor, and the second end of the fifth resistor is grounded; an emitting electrode of the fourth triode is electrically connected with a first end of the fourth resistor, a collecting electrode of the fourth triode is electrically connected with a base electrode of the fifth triode, and an emitting electrode of the fifth triode is electrically connected with an emitting electrode of the fourth triode.
6. The lightning protection multifunctional constant voltage and constant current control circuit according to claim 1, wherein the lightning protection unit includes a first fuse, a second fuse, a first capacitor and a sixth resistor, a first end of the first fuse is used for electrically connecting with a power supply, and a second end of the first fuse is electrically connected with a first end of the second fuse; the first end of the second fuse is electrically connected with the first end of the sixth resistor, and the second end of the second fuse is electrically connected with the voltage transformation unit; the first end of the first capacitor is electrically connected with the second end of the second fuse, and the second end of the first capacitor is electrically connected with the second ends of the transformation unit and the sixth resistor.
7. The lightning protection multifunctional constant voltage and constant current control circuit according to claim 6, wherein the sixth resistor is a voltage dependent resistor.
8. The lightning protection multifunctional constant voltage and constant current control circuit according to claim 1, wherein the first filtering unit comprises a second capacitor, and the second capacitor is electrically connected with the rectifying unit.
9. The lightning protection multifunctional constant voltage and constant current control circuit according to claim 1, wherein the second filtering unit comprises a third capacitor, and the third capacitor is electrically connected with the constant voltage control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122651886.4U CN217215960U (en) | 2021-11-01 | 2021-11-01 | Lightning protection multifunctional constant-voltage constant-current control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122651886.4U CN217215960U (en) | 2021-11-01 | 2021-11-01 | Lightning protection multifunctional constant-voltage constant-current control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217215960U true CN217215960U (en) | 2022-08-16 |
Family
ID=82750829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122651886.4U Active CN217215960U (en) | 2021-11-01 | 2021-11-01 | Lightning protection multifunctional constant-voltage constant-current control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217215960U (en) |
-
2021
- 2021-11-01 CN CN202122651886.4U patent/CN217215960U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217215960U (en) | Lightning protection multifunctional constant-voltage constant-current control circuit | |
| CN105745807B (en) | A kind of DC-DC power source control circuit and electronic equipment | |
| CN203799290U (en) | Current expanding circuit of three-terminal integrated voltage stabilizer | |
| CN203406822U (en) | A wind speed adjusting circuit and an air conditioner | |
| CN117439371A (en) | Constant root mean square voltage output circuit | |
| CN217469769U (en) | Programmable boost DCDC circuit | |
| CN215833813U (en) | Adjustable programmable high-voltage reference unit circuit and adjustable high-voltage reference source | |
| CN214707193U (en) | Voltage compensation circuit and charger | |
| CN205158195U (en) | Program-controlled constant current source circuit | |
| CN214480275U (en) | Small-size BUCK converter circuit suitable for low-power application | |
| CN210119719U (en) | Direct current source | |
| CN207732622U (en) | Output voltage constant-voltage control circuit | |
| CN203251234U (en) | Switch power supply voltage stabilizing circuit | |
| CN207743742U (en) | A kind of charge protection power supply | |
| CN112578838A (en) | Adjustable programmable high-voltage reference unit circuit and adjustable high-voltage reference source | |
| CN104836316A (en) | Current-adjustable constant current charging circuit | |
| CN202276285U (en) | Power supply filter circuit used for stored program control exchange | |
| CN218825334U (en) | Adjustable constant current circuit based on three-terminal regulator | |
| CN211266767U (en) | Power generation circuit with self-recovery overvoltage and overtemperature protection functions | |
| CN218888412U (en) | Voltage and current adjustable circuit and power supply | |
| CN212301724U (en) | Electrical detection device | |
| CN221886298U (en) | Voltage-adjustable capacitor voltage doubling circuit | |
| CN207530707U (en) | A kind of electric power output voltage conditioned circuit | |
| CN219122294U (en) | Conversion circuit | |
| CN220605557U (en) | Onboard 28V direct-current overvoltage surge suppression circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |