CN217282738U - Direct current switch power supply - Google Patents
Direct current switch power supply Download PDFInfo
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- CN217282738U CN217282738U CN202122579394.9U CN202122579394U CN217282738U CN 217282738 U CN217282738 U CN 217282738U CN 202122579394 U CN202122579394 U CN 202122579394U CN 217282738 U CN217282738 U CN 217282738U
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- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a direct current switch power supply relates to the power field, and this direct current switch power supply includes: the commercial power supply module is used for supplying 220V alternating current; the voltage reduction, rectification and filtering module is used for converting 220V alternating current into direct current; the switch module is used for controlling the circuit to be conducted; the voltage stabilizing module is used for stabilizing the voltage of the circuit and then outputting the voltage; the feedback adjusting module is used for sampling the voltage output by the voltage stabilizing module and feeding the voltage back to the voltage stabilizing module; the mains supply module is connected and is stepped down rectification filter module, and step-down rectification filter module link switch module, and voltage stabilizing module is connected to switch module, and voltage stabilizing module connects feedback regulation module, and voltage stabilizing module is connected to feedback regulation module, compares with prior art, the beneficial effects of the utility model are that: according to the scheme, the sliding end of the potentiometer can be adjusted, so that the voltage fed back to the voltage stabilizing module is changed, the output voltage of the circuit is changed, and the circuit is suitable for direct-current electric appliances with different requirements.
Description
Technical Field
The utility model relates to a power field specifically is a direct current switching power supply.
Background
A switching power supply, also called switching power supply, switching converter, is a high-frequency power conversion device, which is a kind of power supply. The function is to convert a level voltage into a voltage or current required by the user terminal through different types of architectures. The input of the switching power supply is mostly an ac power supply (e.g., commercial power) or a dc power supply, and the output is mostly equipment requiring a dc power supply, such as a personal computer, and the switching power supply performs voltage and current conversion between the two.
At present, output switching power supplies in the market are provided with specific chargers, so that the voltage and current requirements of specific equipment (mobile phones, computers, shavers and the like) are met, but too many chargers are inconvenient to carry during traveling and need improvement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a direct current switch power supply to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a direct current switching power supply comprising:
the commercial power supply module is used for supplying 220V alternating current;
the voltage reduction rectification filtering module is used for converting 220V alternating current into direct current;
the switch module is used for controlling the circuit to be conducted;
the voltage stabilizing module is used for stabilizing the voltage of the circuit and then outputting the voltage;
the feedback adjusting module is used for sampling the voltage output by the voltage stabilizing module and feeding the voltage back to the voltage stabilizing module;
the voltage reduction rectification filter module is connected with the switch module, the switch module is connected with the voltage stabilization module, the voltage stabilization module is connected with the feedback regulation module, and the feedback regulation module is connected with the voltage stabilization module.
As a further aspect of the present invention: the voltage reduction rectification filter module comprises a transformer W, a diode D1, a diode D2, a diode D3, a diode D4, a capacitor C1, a resistor R1 and an inductor L1, wherein the input end of the transformer W is connected with the mains supply module, one end of the output end of the transformer W is connected with the anode of the diode D1 and the cathode of the diode D2, the other end of the output end of the transformer W is connected with the anode of the diode D3 and the cathode of the diode D4, the cathode of the diode D1 is connected with the cathode of the diode D3, the capacitor C1 and the resistor R1, the anode of the diode D2 is connected with the anode of the diode D4, the other end of the capacitor C1 and the inductor L1, and the other end of the inductor L1 is connected with the other end of the resistor R1 and the switch module.
As a further aspect of the present invention: the switch module comprises a switch S1, a resistor R2, a capacitor C2 and a capacitor C3, one end of the switch S1 is connected with the voltage-reducing rectification filter module, the other end of the switch S1 is connected with the resistor R2, the other end of the resistor R2 is connected with the capacitor C2 and the capacitor C3, the other end of the capacitor C2 is grounded, and the other end of the capacitor C3 is grounded.
As a further aspect of the present invention: the voltage stabilizing module comprises a triode V1, a triode V2, a triode V3, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a resistor R7, wherein the collector of the triode V1 is connected with the other end of a switch S1, the base of the triode V1 is connected with the collector of the triode V2, the emitter of the triode V1 is connected with a resistor R3, a resistor R6 and a feedback adjusting module, the other end of the resistor R3 is connected with the emitter of the triode V2, the base of the triode V2 is connected with a capacitor C2, a resistor R5 and a resistor R4, the other end of the resistor R4 is connected with the collector of the triode V3, the base of the triode V3 is connected with the other end of the resistor R5, the emitter of the triode V3 is connected with the other end of the resistor R6 and the resistor R7, and the other end of the resistor R7 is grounded.
As a further aspect of the present invention: the feedback regulation module comprises a resistor R8, a diode D5, a potentiometer RP1 and a capacitor C4, one end of the resistor R8 is connected with the capacitor C4 and the voltage stabilizing module, the other end of the resistor R8 is connected with the cathode of the diode D5, the anode of the diode D5 is connected with a potentiometer RP1, the other end of the potentiometer RP1 is grounded, and the sliding end of the potentiometer RP1 is connected with the voltage stabilizing module.
Compared with the prior art, the beneficial effects of the utility model are that: the scheme can change the voltage fed back to the voltage stabilizing module by adjusting the sliding end of the potentiometer, so that the output voltage of the circuit is changed, and the circuit is suitable for direct current electric appliances with different requirements.
Drawings
Fig. 1 is a schematic diagram of a dc switching power supply.
Fig. 2 is a circuit diagram of a dc switching power supply.
Fig. 3 is a structural diagram of the NPN transistor.
Fig. 4 is a structural diagram of the PNP transistor.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1, a dc switching power supply includes:
the commercial power supply module is used for supplying 220V alternating current;
the voltage reduction rectification filtering module is used for converting 220V alternating current into direct current;
the switch module is used for controlling the circuit to be conducted;
the voltage stabilizing module is used for stabilizing the voltage of the circuit and then outputting the voltage;
the feedback adjusting module is used for sampling the voltage output by the voltage stabilizing module and feeding the voltage back to the voltage stabilizing module;
the voltage-reducing rectifying and filtering module is connected with the switch module, the switch module is connected with the voltage-stabilizing module, the voltage-stabilizing module is connected with the feedback regulating module, and the feedback regulating module is connected with the voltage-stabilizing module.
In this embodiment: referring to fig. 2, the buck rectifying-filtering module includes a transformer W, a diode D1, a diode D2, a diode D3, a diode D4, a capacitor C1, a resistor R1, and an inductor L1, an input terminal of the transformer W is connected to the utility power supply module, one end of an output terminal of the transformer W is connected to an anode of the diode D1 and a cathode of the diode D2, the other end of the output terminal of the transformer W is connected to an anode of the diode D3 and a cathode of the diode D4, a cathode of the diode D1 is connected to a cathode of the diode D3, the capacitor C1 and the resistor R1, an anode of the diode D2 is connected to an anode of the diode D4, the other end of the capacitor C1 and the other end of the inductor L1, and the other end of the inductor L1 is connected to the other end of the resistor R1 and the switching module.
The commercial power supply module outputs 220V alternating current, the 220V alternating current is subjected to voltage reduction through the transformer W and is changed into low-voltage alternating current, the low-voltage alternating current is changed into low-voltage direct current through the diode D1, the diode D2, the diode D3 and the diode D4, and the low-voltage direct current is changed into stable low-voltage direct current through a filter circuit formed by the capacitor C1, the inductor L1 and the resistor R1.
In this embodiment: referring to fig. 2, the switch module includes a switch S1, a resistor R2, a capacitor C2, and a capacitor C3, one end of the switch S1 is connected to the buck rectifier filter module, the other end of the switch S1 is connected to the resistor R2, the other end of the resistor R2 is connected to the capacitor C2 and the capacitor C3, the other end of the capacitor C2 is grounded, and the other end of the capacitor C3 is grounded.
After the switch S1 is closed, the circuit is turned on, and the stable low-voltage dc power is input to the voltage stabilization module through the switch S1.
In this embodiment: referring to fig. 2, 3 and 4, the voltage stabilizing module includes a transistor V1, a transistor V2, a transistor V3, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a resistor R7, a collector of the transistor V1 is connected to the other end of the switch S1, a base of the transistor V1 is connected to a collector of the transistor V2, an emitter of the transistor V1 is connected to the resistor R3, the resistor R6 and the feedback adjustment module, the other end of the resistor R3 is connected to an emitter of the transistor V2, a base of the transistor V2 is connected to the capacitor C2, the resistor R5 and the resistor R4, the other end of the resistor R4 is connected to a collector of the transistor V3, a base of the transistor V3 is connected to the other end of the resistor R5, an emitter of the transistor V3 is connected to the other end of the resistor R6 and the resistor R7, and the other end of the resistor R7 is grounded.
The triode V1 and the triode V2 are NPN triodes, and the triode V3 is a PNP triode. After the stable low-voltage direct current is input, the triode V2 is conducted, and then the triode V1 is conducted, the triode V1 outputs voltage, namely the sum of the voltage on the resistor R6 and the voltage on the resistor R7, the triode V3 collects the voltage on the resistor R7, and after the triode V3 is conducted, the voltage is output to the base of the triode V2 through the resistor R4, so that the conduction degree of the triode V2 is influenced, and the conduction degree of the triode V1 is further influenced.
In this embodiment: referring to fig. 2, the feedback adjustment module includes a resistor R8, a diode D5, a potentiometer RP1, and a capacitor C4, one end of the resistor R8 is connected to the capacitor C4 and the voltage stabilization module, the other end of the resistor R8 is connected to the cathode of the diode D5, the anode of the diode D5 is connected to the potentiometer RP1, the other end of the potentiometer RP1 is grounded, and the sliding end of the potentiometer RP1 is connected to the voltage stabilization module.
The output voltage of the triode V1 is the sum of the voltages of the resistor R8, the diode D5 and the potentiometer RP1, and the voltage of the lower half part of the sliding end of the potentiometer RP1 is collected and output to the base of the triode V3, so that the conduction degree of the triode V3 is influenced, the conduction degrees of the triode V2 and the triode V1 are further influenced, the output voltage of the triode V1 is further influenced, and a feedback loop is formed. The triode V3 is a PNP triode, the larger the base voltage is, the lower the conduction degree is, therefore, when the output voltage of the triode V1 is larger, the conduction degree of the triode V3 is reduced, further, the output voltage of the triode V1 is reduced, feedback adjustment is formed, meanwhile, the sliding end position of the potentiometer RP1 can be adjusted, the base voltage of the triode V3 is changed, and the output voltage of the triode V1 is adjusted.
The utility model discloses a theory of operation is: the mains supply module supplies 220V alternating current, the voltage reduction rectification filter module converts the 220V alternating current into direct current, the switch module control circuit is conducted, the voltage of the voltage stabilizing module stabilizing circuit is output to supply power to the electric appliance, the feedback adjusting module samples the voltage output by the voltage stabilizing module and then feeds the voltage to the voltage stabilizing module, and the sliding end position of the potentiometer RP1 is adjusted, so that the output voltage of the voltage stabilizing module is adjusted, and the requirements of different direct current electric appliances are met.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A DC switching power supply characterized in that:
the direct current switching power supply includes:
the commercial power supply module is used for supplying 220V alternating current;
the voltage reduction rectification filtering module is used for converting 220V alternating current into direct current;
the switch module is used for controlling the circuit to be conducted;
the voltage stabilizing module is used for stabilizing the voltage of the circuit and then outputting the voltage;
the feedback adjusting module is used for sampling the voltage output by the voltage stabilizing module and feeding the voltage back to the voltage stabilizing module;
the voltage reduction rectification filter module is connected with the switch module, the switch module is connected with the voltage stabilization module, the voltage stabilization module is connected with the feedback regulation module, and the feedback regulation module is connected with the voltage stabilization module.
2. The direct current switching power supply according to claim 1, wherein the buck rectifier filter module comprises a transformer W, a diode D1, a diode D2, a diode D3, a diode D4, a capacitor C1, a resistor R1 and an inductor L1, an input end of the transformer W is connected with the mains supply module, one end of an output end of the transformer W is connected with an anode of the diode D1 and a cathode of the diode D2, the other end of the output end of the transformer W is connected with an anode of the diode D3 and a cathode of the diode D4, a cathode of the diode D1 is connected with a cathode of the diode D3, the capacitor C1 and the resistor R1, an anode of the diode D2 is connected with an anode of the diode D4, the other end of the capacitor C1 and an inductor L1, and the other end of the inductor L1 is connected with the other end of the resistor R1 and the switching module.
3. The direct-current switching power supply of claim 1, wherein the switch module comprises a switch S1, a resistor R2, a capacitor C2 and a capacitor C3, one end of the switch S1 is connected to the buck rectifier filter module, the other end of the switch S1 is connected to the resistor R2, the other end of the resistor R2 is connected to the capacitors C2 and C3, the other end of the capacitor C2 is grounded, and the other end of the capacitor C3 is grounded.
4. The direct current switching power supply of claim 3, wherein the voltage stabilizing module comprises a transistor V1, a transistor V2, a transistor V3, a resistor R3, a resistor R4, a resistor R5, a resistor R6 and a resistor R7, a collector of the transistor V1 is connected to the other end of the switch S1, a base of the transistor V1 is connected to a collector of the transistor V2, an emitter of the transistor V1 is connected to the resistor R3, the resistor R6 and the feedback regulation module, the other end of the resistor R3 is connected to an emitter of the transistor V2, the base of the transistor V2 is connected to the capacitor C2, the resistor R5 and the resistor R4, the other end of the resistor R4 is connected to a collector of the transistor V3, the base of the transistor V3 is connected to the other end of the resistor R5, the emitter of the transistor V3 is connected to the other end of the resistor R6, the resistor R7, and the other end of the resistor R7 is grounded.
5. The direct-current switching power supply according to claim 1, wherein the feedback regulation module comprises a resistor R8, a diode D5, a potentiometer RP1 and a capacitor C4, one end of the resistor R8 is connected with the capacitor C4 and the voltage stabilizing module, the other end of the resistor R8 is connected with the cathode of the diode D5, the anode of the diode D5 is connected with the potentiometer RP1, the other end of the potentiometer RP1 is grounded, and the sliding end of the potentiometer RP1 is connected with the voltage stabilizing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122579394.9U CN217282738U (en) | 2021-10-26 | 2021-10-26 | Direct current switch power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122579394.9U CN217282738U (en) | 2021-10-26 | 2021-10-26 | Direct current switch power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217282738U true CN217282738U (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122579394.9U Active CN217282738U (en) | 2021-10-26 | 2021-10-26 | Direct current switch power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217282738U (en) |
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2021
- 2021-10-26 CN CN202122579394.9U patent/CN217282738U/en active Active
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