CN221428788U - Driving circuit for heating pad - Google Patents
Driving circuit for heating pad Download PDFInfo
- Publication number
- CN221428788U CN221428788U CN202322330537.1U CN202322330537U CN221428788U CN 221428788 U CN221428788 U CN 221428788U CN 202322330537 U CN202322330537 U CN 202322330537U CN 221428788 U CN221428788 U CN 221428788U
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- Prior art keywords
- voltage stabilizing
- circuit
- motor
- limiting resistor
- voltage
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- 238000010438 heat treatment Methods 0.000 title abstract description 6
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 59
- 230000005669 field effect Effects 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 abstract description 8
- 230000006870 function Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Percussion Or Vibration Massage (AREA)
Abstract
The utility model relates to a driving circuit for a heating pad, which comprises a power supply, a control circuit and a motor connected with the control circuit, wherein the control circuit comprises a voltage stabilizing circuit, a filter circuit and a current-limiting resistor, the voltage stabilizing circuit comprises at least two voltage stabilizing tubes which are arranged in series, the input end of the voltage stabilizing circuit is connected with the power supply, the voltage stabilizing circuit is connected with a plurality of motors in parallel, the motors are arranged in series, the common end of the motors is connected with the common end of the voltage stabilizing circuit, the input end of the current-limiting resistor is provided with the output end of the voltage stabilizing circuit, the filter circuit comprises a circuit capacitor and an inductor, the inductor is arranged in series with the voltage stabilizing circuit, and the capacitor is arranged in parallel with the voltage stabilizing circuit; the motor is provided with the current limiting resistor, the voltage stabilizing tube is connected in parallel with the motor, the voltage value of the motor is matched with the voltage at two ends of the voltage stabilizing tube under different states, the motor is ensured to have stable voltage, and meanwhile, the motor with different load demands can be adapted through adjusting the size of the current limiting resistor and the power of the voltage stabilizing tube, and the motor has certain ductility.
Description
Technical Field
The present utility model relates to a driving system, and more particularly, to a driving circuit for a heat generating pad.
Background
Along with the quick use and development of fabric and especially pad that generates heat, part evolution is to possessing the function of massage, and the massage just needs to set up its vibrations of motor control and reaches the massage function, and the required power of motor that shakes required is little, and the single pressure discomfort that the pad that generates heat provided need additionally set up low pressure difference linear voltage regulator (LDO) and control low pressure motor, but if with LDO direct drive, can influence the stability of power supply chip, leads to MCU power supply voltage to have great fluctuation, finally influences the temperature feedback precision of pad that generates heat, increases extra circuit simultaneously and can increase the volume of LOD chip, influences the use of pad that generates heat.
Disclosure of utility model
The utility model aims to provide a driving circuit for a heating pad, which solves the problem of unstable control system of a low-voltage motor circuit in a heating fabric.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
The utility model provides a driving circuit for a heating pad, which comprises a power supply, a control circuit and a motor connected with the control circuit, wherein the control circuit comprises a voltage stabilizing circuit, a filter circuit and a current-limiting resistor, the voltage stabilizing circuit comprises at least two voltage stabilizing tubes which are arranged in series, the input end of the voltage stabilizing circuit is connected with the power supply, the voltage stabilizing circuit is connected with a plurality of motors in parallel, the motors are arranged in series, the common end of the motors is connected with the common end of the voltage stabilizing circuit, the input end of the current-limiting resistor is provided with the output end of the voltage stabilizing circuit, the filter circuit comprises a capacitor and an inductor, the inductor is arranged in series with the voltage stabilizing circuit, and the capacitor is arranged in parallel with the voltage stabilizing circuit.
Preferably, the rectifier circuit further comprises a field effect transistor, and the field effect transistor is arranged in series with the current limiting resistor.
Preferably, the field effect transistor is an N-channel enhancement mode transistor, and an S-pole of the N-channel enhancement mode transistor is connected with an output end of the current limiting resistor.
The power output power supply is 12V, and the voltage stabilizing tubes are 5.1V voltage stabilizing tubes.
The current limiting resistor is 62 ohms.
A first resistor is further arranged in parallel between the S pole and the G pole of the N-channel enhanced transistor, and a second resistor is further connected in series on the G pole.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
The utility model selects proper voltage stabilizing tube, so that the voltage value of the motor connected in parallel with the motor can be matched with the voltage at two ends of the voltage stabilizing tube under different states, different loads are applied to different motors, for example, the load of the first motor is increased, the current flowing through the first voltage stabilizing tube is reduced, the current of the first motor is increased, the current of the second motor connected in series with the first motor is increased, but the load of the second motor is small, and excessive current is not needed, and when the second motor passes through a public port, the excessive current is distributed to the second voltage stabilizing tube, so that the motor has stable voltage, and meanwhile, the power of the voltage stabilizing tube can be adapted to motors with different load demands by adjusting the size of a current limiting resistor, and the motor has certain ductility.
Drawings
Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
FIG. 1 is a schematic diagram of a structure according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of the structure of the control circuit.
Wherein reference numerals are as follows:
1. A power supply; 2. a voltage stabilizing circuit; 3. a filter circuit; 4. a current limiting resistor; 5. a rectifying circuit; 51. a first resistor; 52. a second resistor; 6. a motor.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1, the vibration massage device comprises a power supply 1, a control circuit and a motor 6 connected with a control member, wherein the power supply 1 is a 12V power supply voltage, the control circuit is used for controlling the output voltage of the power supply 1, the output voltage of the power supply 1 is reduced to a certain value and then is input to the motor 6, and the motor 6 controls the load to act, so that the vibration massage function is realized.
As shown in fig. 2, the control circuit includes a voltage stabilizing circuit 2, a filtering circuit 3 and a current limiting resistor 4, the voltage stabilizing circuit 2 includes at least two voltage stabilizing tubes arranged in series, and also can select the voltage stabilizing tubes according to the number of the motors 6, in this example, there are two voltage stabilizing tubes, the input end of the voltage stabilizing circuit 2 is connected with the power supply 1, the voltage stabilizing circuit 2 is connected with a plurality of motors 6 in parallel, specifically, each voltage stabilizing tube is connected with one motor 6 in parallel, the plurality of motors 6 are arranged in series, the common end of the motors 6 is connected with the common end of the voltage stabilizing circuit 2, so that the voltages at two ends of each motor 6 correspond to the stable voltages of the voltage stabilizing tubes. The types of the two voltage stabilizing tubes are 5.1V voltage stabilizing tubes, so that the voltage is reduced to 1.8V after the two voltage stabilizing tubes pass through.
The filter circuit 3 comprises a capacitor and an inductor, the inductor is arranged in series with the voltage stabilizing circuit 2, the capacitor is arranged in parallel with the voltage stabilizing circuit 2, the filter circuit 3 has the function of reducing alternating current components in pulsating direct current voltage as much as possible, retaining the direct current components, reducing the ripple coefficient of the output voltage, smoothing the waveform and stabilizing the voltage of the voltage stabilizing tube in the example.
The input end of the current limiting resistor 4 is arranged at the output end of the voltage stabilizing circuit 2, and the current limiting resistor 4 is used for adjusting the current in the control circuit and adjusting the load capacity of the circuit. The current limiting resistor 4 in this example is 62 ohms, so that after passing through two diodes, the voltage is reduced to 1.8v, the voltage of 1.8v passes through 62 ohms, and the current is 30mA, so that the circuit has a load capacity of 30mA, and in this example, the current of 30mA just corresponds to the vibration motor 6.
The rectifying circuit 5 comprises a field effect transistor, the field effect transistor is connected with the current limiting resistor 4 in series, the MOS transistor forms a filtering rectifying circuit 5 together with an inductance coil, a capacitance and the like in this example, and a microelectronic switch is formed at the same time, the field effect transistor is an N-channel enhancement type transistor, an S pole of the N-channel enhancement type transistor is connected with an output end of the current limiting resistor 4, a first resistor 51 is further connected in parallel between an S pole and a G pole of the N-channel enhancement type transistor, a second resistor 52 is further connected in series on the G pole, the first resistor 51 is a bleeder resistor, and misoperation of the MOS transistor is avoided, so that the S pole of the MOS transistor is damaged; the function of the second resistor 52 is: the M0S is connected into the circuit, and a parasitic capacitor generated by the lead wire is stored in the memory, so that an LC oscillating circuit is formed together with the parasitic capacitor. For the switching square wave waveform, a plurality of frequency components exist, so that the frequency components are likely to be the same as or similar to the resonance frequency, a series resonance circuit is formed, and an electric positive is connected in series, so that the Q value of the oscillating circuit can be reduced, the oscillation is quickly attenuated, and the circuit fault is not caused.
When the load carried by the first motor 6 is increased, the current flowing through the first voltage stabilizing tube is reduced, the load of the first motor 6 is increased through the current, but the load of the second motor 6 is smaller than that of the first motor 6, and the current is not needed to be so large, so that when the load passes through the common port, the redundant current is distributed to the second voltage stabilizing tube, and finally, the voltage stability at the two ends of the load of the two motors 6 is achieved.
The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.
Claims (6)
1. The utility model provides a drive circuit for pad generates heat, includes power, control circuit and the motor of connection control circuit, its characterized in that, control circuit includes voltage stabilizing circuit, filter circuit and current-limiting resistor, voltage stabilizing circuit includes two at least voltage stabilizing tubes that set up in series, voltage stabilizing circuit's input is connected with the power, voltage stabilizing circuit has a plurality of parallelly connected the motor, a plurality of the motor between series arrangement, the public end of motor is connected at voltage stabilizing circuit's public end, current-limiting resistor's input sets up voltage stabilizing circuit's output, filter circuit includes electric capacity and inductance, the inductance sets up with voltage stabilizing circuit series connection, electric capacity and voltage stabilizing circuit parallel arrangement.
2. A driving circuit for a heat generating pad according to claim 1, wherein: the rectifier circuit comprises a field effect transistor which is connected with the current limiting resistor in series.
3. A driving circuit for a heat generating pad according to claim 2, wherein: the field effect transistor is an N-channel enhanced transistor, and the S electrode of the N-channel enhanced transistor is connected with the output end of the current limiting resistor.
4. A driving circuit for a heat generating pad according to claim 1, wherein: the power output power supply is 12 volts, and the stable voltage of the voltage stabilizing tube is 5.1 volts.
5. A driving circuit for a heat generating pad according to claim 1, wherein: the current limiting resistor is 62 ohms.
6. A driving circuit for a heat generating pad according to claim 3, wherein: a first resistor is further arranged in parallel between the S pole and the G pole of the N-channel enhanced transistor, and a second resistor is further connected in series on the G pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322330537.1U CN221428788U (en) | 2023-08-29 | 2023-08-29 | Driving circuit for heating pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322330537.1U CN221428788U (en) | 2023-08-29 | 2023-08-29 | Driving circuit for heating pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221428788U true CN221428788U (en) | 2024-07-26 |
Family
ID=92014594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322330537.1U Active CN221428788U (en) | 2023-08-29 | 2023-08-29 | Driving circuit for heating pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221428788U (en) |
-
2023
- 2023-08-29 CN CN202322330537.1U patent/CN221428788U/en active Active
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