CN215987070U - Voltage stabilizing circuit for overload protection household appliance - Google Patents
Voltage stabilizing circuit for overload protection household appliance Download PDFInfo
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- CN215987070U CN215987070U CN202122727916.5U CN202122727916U CN215987070U CN 215987070 U CN215987070 U CN 215987070U CN 202122727916 U CN202122727916 U CN 202122727916U CN 215987070 U CN215987070 U CN 215987070U
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- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 30
- 230000002776 aggregation Effects 0.000 claims abstract description 30
- 238000004220 aggregation Methods 0.000 claims abstract description 30
- 239000003990 capacitor Substances 0.000 claims description 93
- 238000006116 polymerization reaction Methods 0.000 claims description 10
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model provides a voltage stabilizing circuit for overload protection household appliances, which comprises an overload protection circuit, a shunt circuit, a voltage transformer and a voltage stabilizing circuit, wherein the voltage stabilizing circuit is connected with a mains supply; the utility model uses the output compensation pin as the feedback signal input through the chip U1 in the overload protection circuit, the voltage rises continuously with the increase of the load, when the maximum power point is reached, the voltage of the COMP pin is used to control the over power point, the triode Q2 is conducted, the voltage of the COMP pin is pulled down through the triode Q2 and the power supply is locked, only when the AC is reconnected, the voltage can be recovered, the overload protection function is realized, meanwhile, the voltage transformer detects the voltage, the alternating current is converted into the direct current by matching with the rectifier bridge of the voltage stabilizing circuit, and the two aggregation switches of the shunt circuit shunt the voltage, so that the voltage on the socket is always in a stable state, the purpose of protecting the household appliance is realized, and the service life of the household appliance is prolonged.
Description
Technical Field
The utility model relates to the technical field of household appliance connecting circuits, in particular to a voltage stabilizing circuit for an overload protection household appliance.
Background
Home appliances mainly refer to various electric and electronic appliances used in homes and the like. Also known as civil electric appliances and daily electric appliances. The household appliances relieve people from heavy, trivial and time-consuming household work, create more comfortable and beautiful life and working environment which are more beneficial to physical and mental health for human beings, provide rich and colorful cultural and entertainment conditions, and become necessities of modern family life;
along with the rapid development of the society, the types of household appliances are more and more, the air conditioners, refrigerators, washing machines, water heaters and other appliances belong to the household appliances and are also necessary articles for the family life, the types of the household appliances are not limited to the household appliances, and the household appliances also comprise warm air blowers, hair dryers, televisions and the like, various household appliances are flooded in the life of people, so that the household appliances are used simultaneously, the current is increased in the same time period, the voltage is overloaded, the household appliances are caused to be short-circuited or even damaged, and the service life of the household appliances is greatly reduced;
therefore, the voltage stabilizing circuit for the overload protection household appliance is provided.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a voltage stabilizing circuit for an overload protection household appliance, so as to solve or alleviate the technical problems in the prior art, and to provide at least one useful choice.
The technical scheme of the embodiment of the utility model is realized as follows: a voltage stabilizing circuit for overload protection of household appliances comprises an overload protection circuit, a shunt circuit, a voltage transformer and a voltage stabilizing circuit, wherein the voltage stabilizing circuit is connected with a mains supply, the overload protection circuit is connected with the mains supply, the voltage stabilizing circuit is connected with the voltage transformer, the voltage stabilizing circuit is connected with the shunt circuit, and the shunt circuit is connected with a switch;
the overload protection circuit comprises a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor CT1, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor RT1, a triode Q1, a triode Q2, an LED lamp D1, an LED lamp D2 and two amplifiers LM 358;
the utility model is connected in series with a resistor R5, a resistor R6 and a triode Q2, the resistor R6 is connected in parallel with a triode Q1, the resistor R7 is connected in parallel with a capacitor C8, the base of the triode Q2 is connected in series with an LED lamp D2, one end of the LED lamp D2 is connected with the input stage of one amplifier LM358 and the resistor R2, the second stage of one amplifier LM358 is connected with the input stage of the other amplifier LM358 and the capacitor C2 and is connected in series with the resistor R2, the other end of the capacitor C2 is connected to the ground, the third stage of the amplifier LM358 is connected with the resistor R2 and the resistor R2, the other end of the resistor R2 is connected to the ground, the second stage of the other amplifier LM358 is respectively connected with the resistor R2, the capacitor C2 and the chip U2, the resistor R2 and the capacitor C2 are connected in parallel with the capacitor C2, the capacitor C2 and the capacitor C2 are connected in series, one pin of the LED lamp D2 is connected with the triode Q2, one pin of the chip U1 is connected with the adjustable resistor RT1 and the adjustable capacitor CT1, and one pin of the chip U1 is connected with the switch.
In some embodiments: the voltage stabilizing circuit comprises a fuse PUSE1, a rectifier bridge, a capacitor C1, a capacitor C2, a chip IC1, a capacitor C3 and a capacitor C4;
and a 1 pin of the rectifier bridge is connected with a fuse PUSE1, and the fuse PUSE1 is connected with a voltage transformer.
In some embodiments: the 2 pins of the rectifier bridge are connected with a VIN pin of a chip IC1, a capacitor C1 and a capacitor C2, and the capacitor C1 and the capacitor C2 are connected in parallel.
In some embodiments: and 3 pins of the rectifier bridge are connected with a voltage transformer.
In some embodiments: the 4 pins of the rectifier bridge are connected with a capacitor C1, a capacitor C2, a chip IC1, a capacitor C3 and a capacitor C4, the capacitor C3 and the capacitor C4 are connected in parallel, and the GND pin of the chip IC1 is grounded.
In some embodiments: the shunt circuit comprises a resistor R1, a resistor R3, a polymerization switch R2 and a polymerization switch R3;
the negative electrode of the capacitor C4 is connected with a resistor R1 and a polymerization switch R2, and the resistor R1 and the polymerization switch R2 are connected in parallel.
In some embodiments: the resistor R3 and the aggregation switch R4 are connected in parallel, the resistor R1 is connected with the resistor R3 and the aggregation switch R4, and the aggregation switch R2 is connected with the resistor R3 and the aggregation switch R4.
In some embodiments: the aggregation switch R4 is connected with a socket, a bus of the socket is grounded, and the socket is connected with a switch.
Due to the adoption of the technical scheme, the embodiment of the utility model has the following advantages:
the utility model uses the output compensation pin as the feedback signal input through the chip U1 in the overload protection circuit, the voltage rises continuously with the increase of the load, when the maximum power point is reached, the voltage of the COMP pin is used to control the over power point, the triode Q2 is conducted, the voltage of the COMP pin is pulled down through the triode Q2 and the power supply is locked, only when the AC is reconnected, the voltage can be recovered, the overload protection function is realized, meanwhile, the voltage transformer detects the voltage, the alternating current is converted into the direct current by matching with the rectifier bridge of the voltage stabilizing circuit, and the two aggregation switches of the shunt circuit shunt the voltage, so that the voltage on the socket is always in a stable state, the purpose of protecting the household appliance is realized, and the service life of the household appliance is prolonged.
The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will be readily apparent by reference to the drawings and following detailed description.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments or technical descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a circuit diagram of the present invention.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a voltage stabilizing circuit for overload protection of a household appliance, including an overload protection circuit, a shunt circuit, a voltage transformer and a voltage stabilizing circuit, where the voltage stabilizing circuit is connected to a mains supply, the overload protection circuit is connected to the mains supply, the voltage stabilizing circuit is connected to the voltage transformer, the voltage stabilizing circuit is connected to the shunt circuit, and the shunt circuit is connected to a switch;
the overload protection circuit comprises a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor CT1, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor RT1, a triode Q1, a triode Q2, an LED lamp D1, an LED lamp D2 and two amplifiers LM 358;
the utility model is characterized in that the utility power is connected in series with a resistor R5, a resistor R6 and a triode Q2, the resistor R6 is connected in parallel with the triode Q1, a resistor R7 is connected in parallel with a capacitor C8, the base of the triode Q2 is connected in series with an LED lamp D2, one end of the LED lamp D2 is connected with the input stage of an amplifier LM358 and the resistor R10, the second stage of the amplifier LM358 is connected with the input stage of another amplifier LM358 and the capacitor C9 and is connected in series with the resistor R11, the other end of the capacitor C9 is grounded, the third stage of the amplifier LM358 is connected with the resistor R8 and the resistor R9, the other end of the resistor R9 is grounded, the second stage of the other amplifier LM358 is respectively connected with the resistor R12, the LED lamp comprises a capacitor C10, a capacitor C11 and a chip U1, a resistor R12 and a capacitor C10 are connected with the capacitor C11 in parallel, a capacitor C10 is connected with the capacitor C11 in series, one pin of the chip U1 is connected with an LED lamp D1, the other end of the LED lamp D1 is connected with a triode Q2, one pin of the chip U1 is connected with an adjustable resistor RT1 and an adjustable capacitor CT1, and one pin of the chip U1 is connected with a switch.
In one embodiment: the voltage stabilizing circuit comprises a fuse PUSE1, a rectifier bridge, a capacitor C1, a capacitor C2, a chip IC1, a capacitor C3 and a capacitor C4;
a pin 1 of the rectifier bridge is connected with a fuse PUSE1, and the fuse PUSE1 is connected with a voltage transformer; by arranging the fuse PUSE1, when the current abnormally rises to a certain height and heat, the fuse can melt itself to cut off the current, thereby playing the role of protecting the safe operation of the circuit.
In one embodiment: the 2 pins of the rectifier bridge are connected with the VIN pin of the chip IC1, the capacitor C1 and the capacitor C2, and the capacitor C1 and the capacitor C2 are connected in parallel.
In one embodiment: a pin 3 of the rectifier bridge is connected with a voltage transformer; by adopting the voltage transformer, the voltage value is detected in time.
In one embodiment: the 4 pins of the rectifier bridge are connected with a capacitor C1, a capacitor C2, a chip IC1, a capacitor C3 and a capacitor C4, the capacitor C3 and the capacitor C4 are connected in parallel, and the GND pin of the chip IC1 is grounded; through the arrangement, the rectifier bridge is used for converting alternating current into direct current and plays a role in voltage stabilization by matching with the capacitor C1, the capacitor C2, the chip IC1, the capacitor C3 and the capacitor C4.
In one embodiment: the shunt circuit comprises a resistor R1, a resistor R3, a polymerization switch R2 and a polymerization switch R3;
the negative electrode of the capacitor C4 is connected with the resistor R1 and the aggregation switch R2, and the resistor R1 and the aggregation switch R2 are mutually connected in parallel; with the above arrangement, the aggregation switch R2 cooperates with the resistor R1, and in a normal state, the aggregation switch R2 has a small resistance, so that the resistor R1 does not function, and the current through the jack is routed through the aggregation switch R2. When the current is abnormally increased, the resistance value of the aggregation switch R2 is increased, the aggregation switch R2 is connected with the socket in series, and the aggregation switch R2 plays a role in current limiting protection.
In one embodiment: the resistor R3 and the aggregation switch R4 are connected in parallel, the resistor R1 is connected with the resistor R3 and the aggregation switch R4, and the aggregation switch R2 is connected with the resistor R3 and the aggregation switch R4; with the above arrangement, in the normal state, the polymeric switch R4 has a very small resistance, so the resistor R3 is not active and the current through the jack is routed through the polymeric switch R4. When the current is abnormally increased, the resistance value of the aggregation switch R4 is increased, at the moment, the aggregation switch R4 is connected with the socket in series, the aggregation switch R4 plays a role in current limiting protection again, and the double protection effect is played by matching with the aggregation switch R2.
In one embodiment: the aggregation switch R4 is connected with the socket, the bus of the socket is grounded, and the socket is connected with the switch.
The utility model is in operation: when the voltage of the output compensation pin is input as a feedback signal through a chip U1 in the overload protection circuit, the voltage of the pin continuously rises along with the increase of a load, when the maximum power point is reached, the voltage of the output compensation pin is about 5V, so the voltage of a COMP pin can be used for controlling an over-power point on the primary side, when the voltage of the COMP pin reaches the voltage of a power set point, an OP1 outputs a high level to charge a capacitor C9, when a voltage division value on a resistor R9 is charged, an OP2 outputs a high level to conduct a triode Q2, an equivalent SCR circuit is continuously conducted due to the strong positive feedback action of the triode Q1 and the triode Q2, the voltage of the COMP pin is pulled down through the triode Q2 and is locked, the power supply can be recovered only when AC is reconnected, the overload protection effect is achieved, meanwhile, a voltage transformer detects the voltage and is matched with a rectifier bridge of a voltage stabilizing circuit to convert alternating current into direct current, the voltage stabilizing circuit and the two aggregation switches of the shunt circuit are used for shunting, so that the voltage on the socket is always in a stable state, the purpose of protecting the household appliance is achieved, and the service life of the household appliance is prolonged.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various changes or substitutions within the technical scope of the present invention, and these should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. The utility model provides an overload protection domestic appliance voltage stabilizing circuit, includes overload protection circuit, shunt circuit, voltage transformer and voltage stabilizing circuit, its characterized in that: the voltage stabilizing circuit is connected with a mains supply, the overload protection circuit is connected with the mains supply, the voltage stabilizing circuit is connected with the voltage transformer, the voltage stabilizing circuit is connected with the shunt circuit, and the shunt circuit is connected with the switch;
the overload protection circuit comprises a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor CT1, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor RT1, a triode Q1, a triode Q2, an LED lamp D1, an LED lamp D2 and two amplifiers LM 358;
the utility model is connected in series with a resistor R5, a resistor R6 and a triode Q2, the resistor R6 is connected in parallel with a triode Q1, the resistor R7 is connected in parallel with a capacitor C8, the base of the triode Q2 is connected in series with an LED lamp D2, one end of the LED lamp D2 is connected with the input stage of one amplifier LM358 and the resistor R2, the second stage of one amplifier LM358 is connected with the input stage of the other amplifier LM358 and the capacitor C2 and is connected in series with the resistor R2, the other end of the capacitor C2 is connected to the ground, the third stage of the amplifier LM358 is connected with the resistor R2 and the resistor R2, the other end of the resistor R2 is connected to the ground, the second stage of the other amplifier LM358 is respectively connected with the resistor R2, the capacitor C2 and the chip U2, the resistor R2 and the capacitor C2 are connected in parallel with the capacitor C2, the capacitor C2 and the capacitor C2 are connected in series, one pin of the LED lamp D2 is connected with the triode Q2, one pin of the chip U1 is connected with the adjustable resistor RT1 and the adjustable capacitor CT1, and one pin of the chip U1 is connected with the switch.
2. The overload protection household appliance voltage regulator circuit of claim 1, wherein: the voltage stabilizing circuit comprises a fuse PUSE1, a rectifier bridge, a capacitor C1, a capacitor C2, a chip IC1, a capacitor C3 and a capacitor C4;
and a 1 pin of the rectifier bridge is connected with a fuse PUSE1, and the fuse PUSE1 is connected with a voltage transformer.
3. The overload protection household appliance voltage regulator circuit of claim 2, wherein: the 2 pins of the rectifier bridge are connected with a VIN pin of a chip IC1, a capacitor C1 and a capacitor C2, and the capacitor C1 and the capacitor C2 are connected in parallel.
4. The overload protection household appliance voltage regulator circuit of claim 2, wherein: and 3 pins of the rectifier bridge are connected with a voltage transformer.
5. The overload protection household appliance voltage regulator circuit of claim 2, wherein: the 4 pins of the rectifier bridge are connected with a capacitor C1, a capacitor C2, a chip IC1, a capacitor C3 and a capacitor C4, the capacitor C3 and the capacitor C4 are connected in parallel, and the GND pin of the chip IC1 is grounded.
6. The overload protection household appliance voltage regulator circuit of claim 1, wherein: the shunt circuit comprises a resistor R1, a resistor R3, a polymerization switch R2 and a polymerization switch R3;
the negative electrode of the capacitor C4 is connected with a resistor R1 and a polymerization switch R2, and the resistor R1 and the polymerization switch R2 are connected in parallel.
7. The overload protection household appliance voltage regulator circuit of claim 6, wherein: the resistor R3 and the aggregation switch R4 are connected in parallel, the resistor R1 is connected with the resistor R3 and the aggregation switch R4, and the aggregation switch R2 is connected with the resistor R3 and the aggregation switch R4.
8. The overload protection household appliance voltage regulator circuit of claim 6, wherein: the aggregation switch R4 is connected with a socket, a bus of the socket is grounded, and the socket is connected with a switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122727916.5U CN215987070U (en) | 2021-11-09 | 2021-11-09 | Voltage stabilizing circuit for overload protection household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122727916.5U CN215987070U (en) | 2021-11-09 | 2021-11-09 | Voltage stabilizing circuit for overload protection household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215987070U true CN215987070U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122727916.5U Expired - Fee Related CN215987070U (en) | 2021-11-09 | 2021-11-09 | Voltage stabilizing circuit for overload protection household appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215987070U (en) |
-
2021
- 2021-11-09 CN CN202122727916.5U patent/CN215987070U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220308 |
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| CF01 | Termination of patent right due to non-payment of annual fee |