CN220671870U - DC power supply voltage regulating circuit - Google Patents
DC power supply voltage regulating circuit Download PDFInfo
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- CN220671870U CN220671870U CN202322405943.XU CN202322405943U CN220671870U CN 220671870 U CN220671870 U CN 220671870U CN 202322405943 U CN202322405943 U CN 202322405943U CN 220671870 U CN220671870 U CN 220671870U
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 24
- 230000003139 buffering effect Effects 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 36
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003381 stabilizer Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
The utility model discloses a DC power supply voltage regulating circuit, which relates to the field of voltage regulation, and comprises: the power supply module is used for supplying direct current and outputting the direct current to the clamping and current limiting module; the clamping and current limiting module is used for reducing the voltage and the current of the input direct current; the voltage adjusting module is used for adjusting the voltage and outputting the voltage to the buffer module; the buffer module is used for buffering the voltage change of the output end when the voltage of the voltage regulating module changes; the safety protection module is used for detecting the voltage condition of the output end, and when the voltage of the output end is overlarge, the safety protection module is grounded and discharged; the beneficial effects of the utility model are as follows: according to the utility model, the resistance value of the potentiometer is regulated in the voltage regulation module to change the conduction degree of the triode, so that the output voltage is changed, stepless voltage regulation is realized, and the regulation voltage range is larger than that of the voltage stabilizer; and a buffer module is arranged for buffering voltage change, so that the damage of a load end device caused by abrupt change of the voltage of an output end is avoided.
Description
Technical Field
The utility model relates to the field of voltage regulation, in particular to a direct-current power supply voltage regulating circuit.
Background
The direct current power supply is used for supplying DC direct current voltage and outputting the DC direct current voltage to the direct current electric appliance for work power supply. The direct current power is generated by alternating current conversion or is directly supplied by a battery.
In voltage regulation of a conventional dc power supply, regulation of a voltage regulator is commonly known, and the disadvantage of regulation of the voltage regulator is that the regulated dc voltage is often small, and it is difficult to output a larger dc power, and improvement is required.
Disclosure of Invention
The present utility model is directed to a dc power supply voltage adjusting circuit, which solves the above-mentioned problems.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a dc power supply voltage regulation circuit comprising:
the power supply module is used for supplying direct current and outputting the direct current to the clamping and current limiting module;
the clamping and current limiting module is used for reducing the voltage and the current of the input direct current;
the voltage adjusting module is used for adjusting the voltage and outputting the voltage to the buffer module;
the buffer module is used for buffering the voltage change of the output end when the voltage of the voltage regulating module changes;
the safety protection module is used for detecting the voltage condition of the output end, and when the voltage of the output end is overlarge, the safety protection module is grounded and discharged;
the power supply module is connected with the clamping current limiting module, the clamping current limiting module is connected with the voltage adjusting module, the voltage adjusting module is connected with the buffering module, and the buffering module is connected with the safety protection module.
As still further aspects of the utility model: the clamping current limiting module comprises a resistor R1, a diode D1 and a capacitor C1, wherein one end of the resistor R1 is connected with the power supply module, the other end of the resistor R1 is connected with the cathode of the diode D1, one end of the capacitor C1 and the voltage regulating module, the anode of the diode D1 is grounded, and the other end of the capacitor C1 is grounded.
As still further aspects of the utility model: the voltage regulation module comprises a resistor R2, a resistor R3, a triode V1, a triode V2, a diode D2, a resistor R4, a potentiometer RP1 and a resistor R5, wherein the collector of the triode V1 is connected with one end of the resistor R2, one end of the resistor R3 and the clamping current limiting module, the other end of the resistor R2 is connected with the emitter of the triode V2 and the cathode of the diode D2, the anode of the diode D2 is grounded, the other end of the resistor R3 is connected with the base of the triode V1 and the collector of the triode V2, the emitter of the triode V1 is connected with the buffer module and one end of the resistor R4, the other end of the resistor R4 is connected with one end of the potentiometer RP1, the other end of the potentiometer RP1 is connected with one end of the resistor R5, the other end of the resistor R5 is grounded, and the sliding end of the potentiometer RP1 is connected with the base of the triode V2.
As still further aspects of the utility model: the buffer module comprises a capacitor C2, an inductor L1 and a capacitor C3, wherein one end of the inductor L1 is connected with the voltage regulating module and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the other end of the inductor L1 is connected with one end of the capacitor C3 and the safety protection module, and the other end of the capacitor C3 is grounded.
As still further aspects of the utility model: the safety protection module comprises a diode D2, a diode D3, a resistor R6, a capacitor C4 and a MOS tube V3, wherein the negative electrode of the diode D2 is connected with the buffer module and the D electrode of the MOS tube V3, the positive electrode of the diode D2 is connected with the positive electrode of the diode D3, the negative electrode of the diode D3 is connected with one end of the resistor R6, one end of the capacitor C4 and the G electrode of the MOS tube V3, the other end of the resistor R6 is grounded, the other end of the capacitor C4 is grounded, and the S electrode of the MOS tube V3 is grounded.
Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the resistance value of the potentiometer is regulated in the voltage regulation module to change the conduction degree of the triode, so that the output voltage is changed, stepless voltage regulation is realized, and the regulation voltage range is larger than that of the voltage stabilizer; and a buffer module is arranged for buffering voltage change, so that the damage of a load end device caused by abrupt change of the voltage of an output end is avoided.
Drawings
Fig. 1 is a schematic diagram of a dc supply voltage regulation circuit.
Fig. 2 is a circuit diagram of a dc supply voltage regulation circuit.
Fig. 3 is a schematic structural diagram of a triode.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.
Referring to fig. 1, a dc power supply voltage adjusting circuit includes:
the power supply module is used for supplying direct current and outputting the direct current to the clamping and current limiting module;
the clamping and current limiting module is used for reducing the voltage and the current of the input direct current;
the voltage adjusting module is used for adjusting the voltage and outputting the voltage to the buffer module;
the buffer module is used for buffering the voltage change of the output end when the voltage of the voltage regulating module changes;
the safety protection module is used for detecting the voltage condition of the output end, and when the voltage of the output end is overlarge, the safety protection module is grounded and discharged;
the power supply module is connected with the clamping current limiting module, the clamping current limiting module is connected with the voltage adjusting module, the voltage adjusting module is connected with the buffering module, and the buffering module is connected with the safety protection module.
In this embodiment: referring to fig. 2, the clamping current limiting module includes a resistor R1, a diode D1, and a capacitor C1, wherein one end of the resistor R1 is connected to the power supply module, the other end of the resistor R1 is connected to the cathode of the diode D1, one end of the capacitor C1, and the voltage regulating module, the anode of the diode D1 is grounded, and the other end of the capacitor C1 is grounded.
The input voltage and current are reduced by limiting current through the resistor R1 and clamping voltage through the diode D1, and the direct current voltage of the power supply module is directly converted from 220V alternating current, so that the direct current voltage is larger, and the voltage and current reduction treatment is realized.
In this embodiment: referring to fig. 2 and 3, the voltage adjusting module includes a resistor R2, a resistor R3, a transistor V1, a transistor V2, a diode D2, a resistor R4, a potentiometer RP1, and a resistor R5, wherein a collector of the transistor V1 is connected to one end of the resistor R2, one end of the resistor R3, and the clamping current limiting module, the other end of the resistor R2 is connected to an emitter of the transistor V2, a cathode of the diode D2 is grounded, the other end of the resistor R3 is connected to a base of the transistor V1, a collector of the transistor V2, an emitter of the transistor V1 is connected to a buffer module, one end of the resistor R4, the other end of the resistor R4 is connected to one end of the potentiometer RP1, the other end of the potentiometer RP1 is connected to one end of the resistor R5, the other end of the resistor R5 is grounded, and a sliding end of the potentiometer RP1 is connected to a base of the transistor V2.
The triodes V1 and V2 are NPN triodes, and the base is conducted when the base is at a high level; when the output voltage of the triode V1 fluctuates, the base voltage of the triode V2 fluctuates, the voltage drop of the triode V2 fluctuates in the opposite direction, and the voltage on the voltage stabilizing diode D2 is unchanged, so that the voltage stabilizing output is constructed by the base voltage of the triode V1 fluctuating in the opposite direction. When the output voltage is required to be regulated, the resistance value of the potentiometer RP1 is regulated, the conduction degree of the triode V2 is changed, and finally the output direct current of the triode V1 is changed, so that the stepless regulation of the voltage is realized.
In this embodiment: referring to fig. 2, the buffer module includes a capacitor C2, an inductor L1, and a capacitor C3, wherein one end of the inductor L1 is connected to the voltage adjusting module and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the other end of the inductor L1 is connected to one end of the capacitor C3 and the safety protection module, and the other end of the capacitor C3 is grounded.
Based on the characteristics that the capacitance voltage is not suddenly changed and the inductance current is not suddenly changed, when the output voltage of the triode V1 is changed, the output voltage VOUT is not suddenly changed based on the action of the buffer module, and damage caused by suddenly changing the working voltage of a load end device is avoided.
In this embodiment: referring to fig. 2, the safety protection module includes a diode D2, a diode D3, a resistor R6, a capacitor C4, and a MOS tube V3, wherein a negative electrode of the diode D2 is connected to the buffer module and a D electrode of the MOS tube V3, a positive electrode of the diode D2 is connected to a positive electrode of the diode D3, a negative electrode of the diode D3 is connected to one end of the resistor R6, one end of the capacitor C4, a G electrode of the MOS tube V3, another end of the resistor R6 is grounded, another end of the capacitor C4 is grounded, and an S electrode of the MOS tube V3 is grounded.
Based on fault factors such as circuit short circuit, when leading to output voltage VOUT too big, zener diode D2 switches on, triggers MOS pipe V3 and switches on, and MOS pipe V3 ground connection bleeder avoids damaging load end device, and emitting diode D3 shines simultaneously and suggests.
The working principle of the utility model is as follows: the power supply module is used for supplying direct current and outputting the direct current to the clamping and current limiting module; the clamping and voltage limiting module is used for reducing the voltage and the current of the input direct current; the voltage regulating module is used for regulating the voltage and outputting the voltage to the buffer module; the buffer module is used for buffering the voltage change of the output end when the voltage of the voltage regulating module changes; the safety protection module is used for detecting the voltage condition of the output end, and when the voltage of the output end is overlarge, the safety protection module is grounded and discharged.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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 disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. A DC power supply voltage regulating circuit is characterized in that:
the DC power supply voltage regulating circuit includes:
the power supply module is used for supplying direct current and outputting the direct current to the clamping and current limiting module;
the clamping and current limiting module is used for reducing the voltage and the current of the input direct current;
the voltage adjusting module is used for adjusting the voltage and outputting the voltage to the buffer module;
the buffer module is used for buffering the voltage change of the output end when the voltage of the voltage regulating module changes;
the safety protection module is used for detecting the voltage condition of the output end, and when the voltage of the output end is overlarge, the safety protection module is grounded and discharged;
the power supply module is connected with the clamping current limiting module, the clamping current limiting module is connected with the voltage adjusting module, the voltage adjusting module is connected with the buffering module, and the buffering module is connected with the safety protection module.
2. The direct current power supply voltage regulating circuit according to claim 1, wherein the clamping current limiting module comprises a resistor R1, a diode D1 and a capacitor C1, one end of the resistor R1 is connected with the power supply module, the other end of the resistor R1 is connected with the negative electrode of the diode D1, one end of the capacitor C1 and the voltage regulating module, the positive electrode of the diode D1 is grounded, and the other end of the capacitor C1 is grounded.
3. The direct current power supply voltage regulation circuit of claim 1, wherein the voltage regulation module comprises a resistor R2, a resistor R3, a triode V1, a triode V2, a diode D2, a resistor R4, a potentiometer RP1, and a resistor R5, wherein a collector of the triode V1 is connected to one end of the resistor R2, one end of the resistor R3, and a clamping current limiting module, the other end of the resistor R2 is connected to an emitter of the triode V2 and a cathode of the diode D2, an anode of the diode D2 is grounded, the other end of the resistor R3 is connected to a base of the triode V1 and a collector of the triode V2, the emitter of the triode V1 is connected to a buffer module, one end of the resistor R4, the other end of the resistor R4 is connected to one end of the potentiometer RP1, the other end of the potentiometer RP1 is connected to one end of the resistor R5, and the other end of the resistor R5 is grounded, and a sliding end of the potentiometer RP1 is connected to the base of the triode V2.
4. The dc power supply voltage adjusting circuit as set forth in claim 3, wherein the buffer module comprises a capacitor C2, an inductor L1, and a capacitor C3, one end of the inductor L1 is connected to the voltage adjusting module and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the other end of the inductor L1 is connected to one end of the capacitor C3 and the safety protection module, and the other end of the capacitor C3 is grounded.
5. The direct current power supply voltage regulating circuit according to claim 1, wherein the safety protection module comprises a diode D2, a diode D3, a resistor R6, a capacitor C4, and a MOS tube V3, wherein a negative electrode of the diode D2 is connected with the buffer module and a D electrode of the MOS tube V3, a positive electrode of the diode D2 is connected with a positive electrode of the diode D3, a negative electrode of the diode D3 is connected with one end of the resistor R6, one end of the capacitor C4, a G electrode of the MOS tube V3, the other end of the resistor R6 is grounded, and the other end of the capacitor C4 is grounded, and an S electrode of the MOS tube V3 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322405943.XU CN220671870U (en) | 2023-09-05 | 2023-09-05 | DC power supply voltage regulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322405943.XU CN220671870U (en) | 2023-09-05 | 2023-09-05 | DC power supply voltage regulating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220671870U true CN220671870U (en) | 2024-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322405943.XU Active CN220671870U (en) | 2023-09-05 | 2023-09-05 | DC power supply voltage regulating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220671870U (en) |
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2023
- 2023-09-05 CN CN202322405943.XU patent/CN220671870U/en active Active
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