CN210111851U - Voltage-stabilizing power supply circuit and electronic refrigerator power supply - Google Patents
Voltage-stabilizing power supply circuit and electronic refrigerator power supply Download PDFInfo
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- CN210111851U CN210111851U CN201921205761.5U CN201921205761U CN210111851U CN 210111851 U CN210111851 U CN 210111851U CN 201921205761 U CN201921205761 U CN 201921205761U CN 210111851 U CN210111851 U CN 210111851U
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Abstract
The utility model discloses a steady voltage supply circuit and electronic refrigerator power is through setting up diode D1, polarity electric capacity C1, electric capacity C2, stabiliser U1, resistance R1, resistance R2, resistance R3, polarity electric capacity C3 and resistance R4. In the practical application process, the diode D1 has the function of preventing backflow, so that the voltage backflow is prevented, and the stability of the voltage-stabilizing power supply circuit is influenced; in addition, the voltage stabilizer U1 plays a role in voltage stabilization, clamps the voltage and enables the voltage stabilizing power supply circuit to stabilize the output voltage value in the related functional units of the power supply of the electronic refrigerator; the polar capacitor C1 and the capacitor C2 filter the input voltage, and the polar capacitor C3 filters the output voltage, thereby improving the waveform of the voltage.
Description
Technical Field
The utility model relates to an electron refrigerator power supply technical field especially relates to a steady voltage supply circuit and electron refrigerator power.
Background
At present, the electronic refrigerator is also called as a semiconductor refrigerator, and has small volume and no mechanical refrigeration process. The movable refrigeration platform is widely applied to automobiles, airplanes and other movable refrigeration platforms. The electronic refrigerator is a product completely different from the common refrigerator in the refrigeration principle, and uses a 40 mm square and 4 mm thick semiconductor chip to realize refrigeration by using high-efficiency annular double-layer heat pipe heat dissipation and conduction technology and automatic variable pressure and variable flow control technology, which is a minimum compressor in the world. Because the semiconductor refrigerator belongs to electronic physical refrigeration, the refrigeration working medium and mechanical moving parts are used fundamentally, thereby thoroughly solving the application problems which can not be solved by mechanical refrigeration refrigerators such as medium pollution, mechanical vibration and the like, having more remarkable energy-saving characteristic in the aspect of small-capacity low-temperature refrigerators and having great development and popularization values.
Because various functional units are arranged in the electronic refrigerator, in order to supply power to the functional units, a power supply circuit is arranged in a power supply of the electronic refrigerator, but for the existing power supply circuit, voltage is usually only boosted or reduced, the voltage input into the power supply circuit is converted into the voltage required by the corresponding functional unit, voltage stabilizing operation on the voltage is not involved, so that the voltage output by the power supply circuit is unstable, and the working stability of the related functional units is influenced; in addition, the existing power supply circuit does not have the function of preventing voltage backflow, the voltage backflow is the voltage backflow, so that the voltage input into the power supply circuit is easy to flow back to an output ground, and the phenomenon is easy to cause the fault of the power supply of the electronic refrigerator; in addition, the conventional power supply circuit does not perform filtering processing on the output voltage after voltage conversion, so that the finally output voltage waveform is unstable, and the normal operation of related functional units is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, providing one kind can carry out steady voltage to voltage and handle, possesses and prevents flowing backward the function, prevents the voltage countercurrent, and the security is better to and can carry out filtering to voltage and handle, improve the steady voltage supply circuit and the electronic refrigerator power of voltage waveform.
The purpose of the utility model is realized through the following technical scheme:
a regulated power supply circuit comprising: diode D1, polar capacitor C1, capacitor C2, voltage stabilizer U1, resistor R1, resistor R2, resistor R3, polar capacitor C3 and resistor R4;
the anode of the diode D1 is used as the input terminal of the regulated power supply circuit, the cathode of the diode D1 is connected to the anode of the polar capacitor C1, one end of the capacitor C2 and the input terminal of the regulator U1, the cathode of the polar capacitor C1 is grounded, the other end of the capacitor C2 is grounded, the voltage regulation terminal of the regulator U1 is connected to one end of the resistor R1, one end of the resistor R2 and one end of the resistor R3, the other end of the resistor R1 is grounded, the other end of the resistor R2 is grounded, the other end of the resistor R3 is connected to the output terminal of the regulator U1, the output terminal of the regulator U1 is used as the output terminal of the regulated power supply circuit, the anode of the polar capacitor C3 is connected to the output terminal of the regulator U1, the cathode of the polar capacitor C3 is grounded, one end of the resistor R4 is connected to the output terminal of the regulator U1, the other end of the resistor R4 is grounded.
In one embodiment, the polarity capacitor C1 has a capacitance size of 100 uF.
In one embodiment, the resistance R1 has a value of 1.3K Ω.
In one embodiment, the resistance R2 has a value of 1.69K Ω.
In one embodiment, the resistance value of the resistor R3 is 240 Ω.
In one embodiment, the polarity capacitor C3 has a capacitance size of 100 uF.
In one embodiment, the resistance R4 has a value of 5.1K Ω.
In one embodiment, the regulator U1 is of the type LM 317.
An electronic refrigerator power supply comprises the voltage-stabilizing power supply circuit.
The utility model discloses compare in prior art's advantage and beneficial effect as follows:
the utility model discloses a steady voltage supply circuit and electronic refrigerator power is through setting up diode D1, polarity electric capacity C1, electric capacity C2, stabiliser U1, resistance R1, resistance R2, resistance R3, polarity electric capacity C3 and resistance R4. In the practical application process, the diode D1 has the function of preventing backflow, so that the voltage backflow is prevented, and the stability of the voltage-stabilizing power supply circuit is influenced; in addition, the voltage stabilizer U1 plays a role in voltage stabilization, clamps the voltage and enables the voltage stabilizing power supply circuit to stabilize the output voltage value in the related functional units of the power supply of the electronic refrigerator; the polar capacitor C1 and the capacitor C2 filter the input voltage, and the polar capacitor C3 filters the output voltage, thereby improving the waveform of the voltage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic circuit diagram of a voltage-stabilizing power supply circuit according to an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a power supply of an electronic refrigerator includes a voltage-stabilizing power supply circuit 10, where the voltage-stabilizing power supply circuit 10 includes a diode D1, a polar capacitor C1, a capacitor C2, a voltage stabilizer U1, a resistor R1, a resistor R2, a resistor R3, a polar capacitor C3, and a resistor R4;
the anode of the diode D1 is used as the input end of the voltage-stabilizing power supply circuit 10, the cathode of the diode D1 is connected with the anode of the polar capacitor C1, one end of the capacitor C2 and the input end of the voltage stabilizer U1, the cathode of the polar capacitor C1 is grounded, the other end of the capacitor C2 is grounded, the voltage regulation end of the voltage stabilizer U1 is connected with one end of the resistor R1, one end of the resistor R2 and one end of the resistor R3, the other end of the resistor R1 is grounded, the other end of the resistor R2 is grounded, the other end of the resistor R3 is connected with the output end of the voltage stabilizer U1, the output end of the voltage stabilizer U1 is used as the output end of the voltage-stabilizing power supply circuit 10, the anode of the polar capacitor C3 is connected with the output end of the voltage stabilizer U1, the cathode of the polar capacitor C3 is grounded, one end.
Therefore, it should be noted that the diode D1 plays a role of preventing backflow, so as to prevent voltage backflow from affecting the stability of the voltage-stabilizing power supply circuit; in addition, the voltage stabilizer U1 plays a role in voltage stabilization, clamps the voltage and enables the voltage stabilizing power supply circuit to stabilize the output voltage value in the related functional units of the power supply of the electronic refrigerator; the polar capacitor C1 and the capacitor C2 filter the input voltage, and the polar capacitor C3 filters the output voltage, thereby improving the waveform of the voltage.
The voltage output by the regulator U1 is determined by the resistor R1 and the resistor R3, and the voltage output by the regulator U1 is 1.25 × (1+ R1/R3); resistor R2 acts as a trimming resistor R1 to allow regulator U1 to output a more accurate voltage.
Specifically, in one embodiment, the capacitance of the polar capacitor C1 is 100uF in size; the resistance value of the resistor R1 is 1.3K omega; the resistance value of the resistor R2 is 1.69K omega; the resistance value of the resistor R3 is 240 omega; the capacitance of the polar capacitor C3 is 100 uF; the resistance value of the resistor R4 is 5.1K omega; voltage regulator U1 is model LM 317.
Thus, it should be noted that the specific sizes of the polar capacitor C1, the resistor R1, the resistor R2, the resistor R3, the polar capacitor C3 and the resistor R4 and the specific model of the voltage regulator U1 can be flexibly set according to actual situations.
The utility model discloses a steady voltage supply circuit and electronic refrigerator power is through setting up diode D1, polarity electric capacity C1, electric capacity C2, stabiliser U1, resistance R1, resistance R2, resistance R3, polarity electric capacity C3 and resistance R4. In the practical application process, the diode D1 has the function of preventing backflow, so that the voltage backflow is prevented, and the stability of the voltage-stabilizing power supply circuit is influenced; in addition, the voltage stabilizer U1 plays a role in voltage stabilization, clamps the voltage and enables the voltage stabilizing power supply circuit to stabilize the output voltage value in the related functional units of the power supply of the electronic refrigerator; the polar capacitor C1 and the capacitor C2 filter the input voltage, and the polar capacitor C3 filters the output voltage, thereby improving the waveform of the voltage.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (9)
1. A regulated power supply circuit, comprising: diode D1, polar capacitor C1, capacitor C2, voltage stabilizer U1, resistor R1, resistor R2, resistor R3, polar capacitor C3 and resistor R4;
the anode of the diode D1 is used as the input terminal of the regulated power supply circuit, the cathode of the diode D1 is connected to the anode of the polar capacitor C1, one end of the capacitor C2 and the input terminal of the regulator U1, the cathode of the polar capacitor C1 is grounded, the other end of the capacitor C2 is grounded, the voltage regulation terminal of the regulator U1 is connected to one end of the resistor R1, one end of the resistor R2 and one end of the resistor R3, the other end of the resistor R1 is grounded, the other end of the resistor R2 is grounded, the other end of the resistor R3 is connected to the output terminal of the regulator U1, the output terminal of the regulator U1 is used as the output terminal of the regulated power supply circuit, the anode of the polar capacitor C3 is connected to the output terminal of the regulator U1, the cathode of the polar capacitor C3 is grounded, one end of the resistor R4 is connected to the output terminal of the regulator U1, the other end of the resistor R4 is grounded.
2. The regulated supply circuit of claim 1, wherein said polarity capacitor C1 has a capacitance of 100 uF.
3. The regulated power supply circuit according to claim 1, wherein said resistor R1 has a resistance of 1.3K Ω.
4. The regulated power supply circuit according to claim 1, wherein said resistor R2 has a resistance of 1.69K Ω.
5. The regulated power supply circuit according to claim 1, wherein said resistor R3 has a resistance of 240 Ω.
6. The regulated supply circuit of claim 1, wherein said polarity capacitor C3 has a capacitance of 100 uF.
7. The regulated power supply circuit according to claim 1, wherein said resistor R4 has a resistance of 5.1K Ω.
8. The regulated power supply circuit of claim 1, wherein said regulator U1 is model LM 317.
9. An electronic refrigerator power supply, characterized by comprising the voltage-stabilizing power supply circuit of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921205761.5U CN210111851U (en) | 2019-07-29 | 2019-07-29 | Voltage-stabilizing power supply circuit and electronic refrigerator power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921205761.5U CN210111851U (en) | 2019-07-29 | 2019-07-29 | Voltage-stabilizing power supply circuit and electronic refrigerator power supply |
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| Publication Number | Publication Date |
|---|---|
| CN210111851U true CN210111851U (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921205761.5U Active CN210111851U (en) | 2019-07-29 | 2019-07-29 | Voltage-stabilizing power supply circuit and electronic refrigerator power supply |
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| Country | Link |
|---|---|
| CN (1) | CN210111851U (en) |
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- 2019-07-29 CN CN201921205761.5U patent/CN210111851U/en active Active
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