CN217249625U - Touch shutdown power supply circuit of paper shredder - Google Patents
Touch shutdown power supply circuit of paper shredder Download PDFInfo
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- CN217249625U CN217249625U CN202123312131.8U CN202123312131U CN217249625U CN 217249625 U CN217249625 U CN 217249625U CN 202123312131 U CN202123312131 U CN 202123312131U CN 217249625 U CN217249625 U CN 217249625U
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- 239000003990 capacitor Substances 0.000 claims description 33
- 238000007599 discharging Methods 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims 1
- 230000000087 stabilizing effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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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 relates to a kneader touch shutdown power supply circuit, power supply circuit includes anti-jamming circuit, resistance-capacitance step-down circuit, rectifier circuit, steady voltage filter circuit, voltage control circuit and output drive circuit, the commercial power alternating current power supply is connected to the anti-jamming circuit input, resistance-capacitance step-down circuit and output drive circuit are connected to anti-jamming circuit's output, resistance-capacitance step-down circuit and output drive circuit parallel connection, resistance-capacitance step-down circuit and rectifier circuit, steady voltage filter circuit and voltage control circuit series connection. The utility model discloses an adopt the touch shutdown circuit scheme of resistance-capacitance step-down formula, its simple structure, the circuit component element significantly reduces, and reduce cost improves the market competition of product, has ensured kneader touch shutdown function's stability simultaneously.
Description
Technical Field
The utility model relates to a power supply circuit control technical field, concretely relates to kneader touch shutdown power supply circuit.
Background
As the era of knowledge economy comes, more and more information has a great value or influence, and therefore, many information must be kept secret. In the process of processing information, there are various applications, that is, many important information is described on paper, and if confidentiality is concerned, the paper on which the information is described needs to be destroyed after the paper is used. Due to the efficiency and environmental issues, paper shredders are used to shred paper to destroy information on the paper. In the touch shutdown circuit made by the paper shredder in the prior art, in order to ensure the stability of the touch function, the power supply part of the circuit is made more complicated and has very high cost, and most of the circuits adopt transformer isolation or small-sized switch power supplies.
As shown in fig. 1, fig. 1 is a schematic diagram of a power circuit of a touch shutdown in the prior art, and the circuit adopts a transformer, which has a relatively complex structure, many components constituting the circuit, and high cost.
Therefore, it is now urgently needed to provide a shredder touch shutdown power circuit with simple structure and low cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough and defect of prior art, providing a kneader touch shutdown power supply circuit, not only power supply circuit simple structure, reduce cost can also ensure the stability of touch shutdown function.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a kneader touch shutdown power supply circuit, includes anti-jamming circuit, resistance-capacitance voltage reduction circuit, rectifier circuit, steady voltage filter circuit, voltage control circuit and output drive circuit, the commercial power alternating current power supply is connected to the anti-jamming circuit input, resistance-capacitance voltage reduction circuit and output drive circuit are connected to anti-jamming circuit's output, resistance-capacitance voltage reduction circuit and output drive circuit parallel connection, resistance-capacitance voltage reduction circuit and rectifier circuit, steady voltage filter circuit and voltage control circuit series connection.
As a preferred technical scheme of the utility model, anti-jamming circuit includes electric capacity C1, Fuse, resistance R1, resistance R23, resistance R24, resistance R25 and common mode inductance T1, electric capacity C1 one end is passed through the Fuse and is connected live wire L, the electric capacity C1 other end is connected with zero line N, parallelly connected resistance R1, R23 one end are connected to electric capacity C1 one end, parallelly connected resistance R24, R25 one end are connected to the electric capacity C1 other end, the resistance R1, R23 other end are connected with resistance R24, the R25 other end, common mode inductance T1's one end is connected with electric capacity C1 one end, common mode inductance T1's the other end is connected with the electric capacity C1 other end.
As an optimized technical scheme of the utility model, resistance-capacitance step-down circuit includes electric capacity C4 and resistance R15, just electric capacity C4 is parallelly connected with resistance R15 and is discharged the step-down.
As a preferred technical solution of the present invention, the rectifier circuit is a bridge circuit formed by connecting diodes D5, D6, D7 and D8.
As a preferred technical scheme of the utility model, steady voltage filter circuit comprises stabilivolt Z2, electric capacity C5, C6 parallel connection.
As an optimal technical scheme of the utility model, voltage control circuit is established ties by three terminal regulator U1 and parallelly connected electric capacity C9, C10 and is constituteed, supply voltage VCC is connected to three terminal regulator U1's Vout end, and +5V voltage, three terminal regulator U1's GND end ground are connected to three terminal regulator U1's Vin end.
As an optimal technical scheme of the utility model, output drive circuit comprises singlechip U2, resistance R6, triode Q1, relay K1, electric capacity C2 and port P, the collecting electrode of triode Q1 passes through relay K1 and connects power supply VCC, triode Q1 projecting pole ground connection, triode Q1's base is passed through resistance R6 and is connected with singlechip U2, electric capacity C2 and ground connection are connected to singlechip U2's VDD, 5V voltage is connected to singlechip U2's VDD, port P is connected with singlechip U2.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a power supply circuit sets up the resistance-capacitance step-down circuit of series connection, rectifier circuit, steady voltage filter circuit and voltage control circuit, and place steady voltage filter circuit at voltage control circuit's front end, the direct current that will export after resistance-capacitance step-down circuit step-down and rectifier circuit rectification carries out steady voltage filter circuit earlier and handles, can prevent that distortion voltage and electric current that the kneader produced when moving at first arouse the burnout of stabiliser to three terminal regulator U1's impact in the voltage control circuit, thereby step-down electric capacity has been protected, further guaranteed to provide the stability of the corresponding direct current voltage of output drive circuit.
2. The circuit scheme adopted by the utility model is a resistance-capacitance step-down type DC voltage-stabilizing auxiliary power circuit for AC input DC voltage-stabilizing output, which is mainly used by connecting a capacitor and a resistor in parallel and plays a role of stability, durability and impact resistance; the problem of unstable output voltage of a traditional capacitor caused by temperature, service time and the like is solved; the touch shutdown control circuit is simple in structure, the circuit components are greatly reduced, the cost is reduced, the market competitiveness of the product is improved, and the stability of the touch shutdown function of the paper shredder is guaranteed.
Drawings
Fig. 1 is a schematic diagram of a power circuit in the prior art.
Fig. 2 is a schematic diagram of the power circuit structure of the present invention.
Fig. 3 is a schematic diagram of a power circuit of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
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.
As shown in fig. 2-3, the specific implementation process of the present invention is as follows: the utility model provides a kneader touch shutdown power supply circuit, including anti-jamming circuit 1, resistance-capacitance voltage reduction circuit 2, rectifier circuit 3, steady voltage filter circuit 4, voltage control circuit 5 and output drive circuit 6, the commercial power alternating current power supply is connected to anti-jamming circuit 1 input, resistance-capacitance voltage reduction circuit 2 and output drive circuit 6 are connected to anti-jamming circuit 1's output, resistance-capacitance voltage reduction circuit 2 and output drive circuit 6 parallel connection, resistance-capacitance voltage reduction circuit 2 and rectifier circuit 3, steady voltage filter circuit 4 and voltage control circuit 5 series connection.
The anti-interference circuit 1 comprises a capacitor C1, a Fuse, resistors R1, R23, R24, R25 and a common-mode inductor T1, one end of a capacitor C1 is connected with a live wire L of a mains supply through the Fuse, the other end of the capacitor C1 is connected with a zero line N of the mains supply, one end of the capacitor C1 is connected with one ends of resistors R1 and R23 which are connected in parallel, the other end of the capacitor C1 is connected with one ends of resistors R24 and R25 which are connected in parallel, the other ends of the resistors R1 and R23 are connected with the other ends of the resistors R24 and R25, one end of the common-mode inductor T1 is connected with one end of a capacitor C1, and the other end of the common-mode inductor T1 is connected with the other end of the capacitor C1. When normal current in the circuit flows through the common-mode inductor T1, the current generates reverse magnetic fields in the induction coils wound in the same phase to cancel each other out, and at the moment, the normal signal current is mainly influenced by the resistance of the coils; when a common mode current flows through the coil, due to the isotropy of the common mode current, an equidirectional magnetic field is generated in the coil to increase the inductive reactance of the coil, so that the coil presents high impedance and generates a strong damping effect, thereby attenuating the common mode current. The common mode inductor T1 has two winding turns with a substantial gap between them, which creates flux leakage and creates a differential mode inductor. Therefore, the common mode inductor T1 has a certain differential mode interference attenuation capability.
The resistance-capacitance voltage reduction circuit 2 comprises a capacitor C4 and a resistor R15, the capacitor C4 and the resistor R15 are connected in parallel to perform discharging voltage reduction, and the maximum working voltage is limited by capacitance and impedance generated by the capacitor C4 and the resistor R15 under a certain alternating voltage frequency, so that the voltage reduction effect is achieved.
The voltage stabilizing filter circuit 4 is formed by connecting a voltage stabilizing tube Z2, a capacitor C5 and a capacitor C6 in parallel. The direct current output by the rectifying circuit 3 is stabilized by a voltage stabilizing tube Z2, and then filtered by capacitors C5 and C6, so that the alternating current component in the direct current voltage is reduced, the direct current component is retained, the ripple factor of the output voltage is reduced, and the waveform becomes smoother.
The voltage control circuit 5 is formed by connecting a three-terminal regulator U1 and capacitors C9 and C10 which are connected in parallel in series, the Vout end of the three-terminal regulator U1 is connected with a power supply voltage VCC, the Vin end of the three-terminal regulator U1 is connected with +5V voltage, and the GND end of the three-terminal regulator U1 is grounded. The voltage control circuit adopts a 78L05 three-terminal voltage stabilizer which has fixed voltage of 5V and is used for replacing the traditional Zener diode-resistor group, the output impedance of the voltage control circuit is effectively improved, the output current is reduced, and the voltage control circuit is suitable for supplying power to a single chip microcomputer U2.
The output driving circuit 6 comprises singlechip U2, resistance R6, triode Q1, relay K1, electric capacity C2 and port P, and the collecting electrode of triode Q1 passes through relay K1 and connects power supply VCC, triode Q1 projecting pole ground connection, triode Q1's base is connected with singlechip U2 through resistance R6, and singlechip U2's VDD connects electric capacity C2 and ground connection, and singlechip U2's VDD connects 5V voltage, and port P is connected with singlechip U2 one end. The 5V voltage received by the single chip microcomputer U2 is output by the voltage control circuit 5, when the machine runs, the port P needs to be touched, the relay K1 is disconnected, and the machine stops working.
The utility model discloses a theory of operation is: the commercial power alternating current power supply is input from the ends of a live wire L and a zero line N, and when current flows through the capacitor C1, the resistor R1, the resistor R23, the resistor R24 and the resistor R25 and then flows through the common-mode inductor T1, magnetic flux leakage can be generated, a differential-mode inductor is formed, and the anti-interference effect is achieved; then the voltage is discharged and reduced by a capacitor C4 and a resistor R15 which are connected in parallel, then the voltage is discharged and reduced by a bridge rectifier circuit formed by diodes D5, D6, D7 and D8, the input alternating current voltage is converted into direct current voltage, then the direct current voltage is output after passing through a voltage stabilizing filter circuit formed by a voltage stabilizing tube Z2, capacitors C5 and C6 which are connected in parallel, the stable direct current voltage forms stable 5V voltage through a three-terminal voltage stabilizer U1 in the voltage control circuit and is output to the single chip microcomputer U2 for power supply, when the machine works, a port P needs to be touched, so that a relay K1 is disconnected, and the machine stops working.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not 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 (7)
1. The utility model provides a kneader touch shutdown power supply circuit, its characterized in that, power supply circuit includes anti-jamming circuit (1), resistance-capacitance step-down circuit (2), rectifier circuit (3), steady voltage filter circuit (4), voltage control circuit (5) and output drive circuit (6), commercial power AC power is connected to anti-jamming circuit (1) input, resistance-capacitance step-down circuit (2) and output drive circuit (6) are connected to the output of anti-jamming circuit (1), resistance-capacitance step-down circuit (2) and output drive circuit (6) parallel connection, resistance-capacitance step-down circuit (2) and rectifier circuit (3), steady voltage filter circuit (4) and voltage control circuit (5) series connection.
2. A touch shutdown power supply circuit for a paper shredder according to claim 1, wherein the anti-jamming circuit (1) comprises a capacitor C1, a Fuse, a resistor R1, a resistor R23, a resistor R24, a resistor R25 and a common mode inductor T1, one end of the capacitor C1 is connected with the live line L through the Fuse, the other end of the capacitor C1 is connected with the neutral line N, one end of the capacitor C1 is connected with one end of a resistor R1 and a resistor R23 which are connected in parallel, the other end of the capacitor C1 is connected with one end of a resistor R24 and a resistor R25 which are connected in parallel, the other end of the resistors R1 and R23 is connected with the other end of the resistors R24 and R25, one end of the common mode inductor T1 is connected with one end of a capacitor C1, and the other end of the common mode inductor T1 is connected with the other end of the capacitor C1.
3. The touch shutdown power supply circuit of a paper shredder according to claim 1, wherein the RC voltage reduction circuit (2) comprises a capacitor C4 and a resistor R15, and the capacitor C4 is connected in parallel with the resistor R15 for discharging and reducing voltage.
4. A paper shredder touch shutdown power supply circuit according to claim 1, characterized in that the rectifying circuit (3) is a bridge circuit formed by connecting diodes D5, D6, D7 and D8.
5. A paper shredder touch shutdown power supply circuit according to claim 1, characterized in that the voltage-stabilizing filter circuit (4) is composed of a voltage-stabilizing tube Z2, a capacitor C5, and a capacitor C6 which are connected in parallel.
6. The touch shutdown power supply circuit of a paper shredder according to claim 1, wherein the voltage control circuit (5) is composed of a three-terminal regulator U1 and capacitors C9 and C10 which are connected in parallel, the Vout end of the three-terminal regulator U1 is connected with a supply voltage VCC, the Vin end of the three-terminal regulator U1 is connected with +5V voltage, and the GND end of the three-terminal regulator U1 is grounded.
7. A paper shredder touch shutdown power supply circuit according to claim 1, characterized in that the output driving circuit (6) is composed of a single chip microcomputer U2, a resistor R6, a triode Q1, a relay K1, a capacitor C2 and a port P, the collector of the triode Q1 is connected with a power supply VCC through a relay K1, the emitter of the triode Q1 is grounded, the base of the triode Q1 is connected with the single chip microcomputer U2 through a resistor R6, the VDD of the single chip microcomputer U2 is connected with the capacitor C2 and grounded, the VDD of the single chip microcomputer U2 is connected with a voltage of 5V, and the port P is connected with the single chip microcomputer U2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123312131.8U CN217249625U (en) | 2021-12-27 | 2021-12-27 | Touch shutdown power supply circuit of paper shredder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123312131.8U CN217249625U (en) | 2021-12-27 | 2021-12-27 | Touch shutdown power supply circuit of paper shredder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217249625U true CN217249625U (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123312131.8U Active CN217249625U (en) | 2021-12-27 | 2021-12-27 | Touch shutdown power supply circuit of paper shredder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217249625U (en) |
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2021
- 2021-12-27 CN CN202123312131.8U patent/CN217249625U/en active Active
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Effective date of registration: 20231208 Address after: 511500 Jinyushan Industrial Zone, Sanba Liantang Erqi Village, Shijiao Town, Fogang County, Qingyuan City, Guangdong Province, China, self designated Zone 3 Patentee after: Qingyuan Huihao Technology Co.,Ltd. Address before: 518000 first floor of buildings 101, K, l and m, building h, No. 2, Longshan 8th Road, Luotian community, Yanluo street, Bao'an District, Shenzhen, Guangdong Patentee before: SHENZHEN VIGORHOOD ELECTRONICS Co.,Ltd. |