CN217904389U - Electrodeless regulating circuit of atomizing piece power - Google Patents
Electrodeless regulating circuit of atomizing piece power Download PDFInfo
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- CN217904389U CN217904389U CN202222141517.5U CN202222141517U CN217904389U CN 217904389 U CN217904389 U CN 217904389U CN 202222141517 U CN202222141517 U CN 202222141517U CN 217904389 U CN217904389 U CN 217904389U
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Abstract
The utility model relates to a drive circuit field, especially an electrodeless regulating circuit of atomizing piece power. The utility model discloses a digital analog conversion unit reduces the ripple value of input PWM signal, and rethread voltage driver improves the driving force of circuit, and rethread double current source and power management unit control driving voltage carry out electrodeless change to a circuit that can be used for adjusting atomizing piece driving voltage is provided. The atomizing plate can work more stably, the working noise of the atomizing plate is reduced, the fog sprayed by the atomizing plate is softer, the particle size is smaller, and the atomizing plate is beneficial to absorption of human eyes.
Description
Technical Field
The utility model relates to a drive circuit field, especially an electrodeless regulating circuit of atomizing piece power.
Background
The traditional method for changing the driving power of the atomizing plate is that the driving voltage is fixed, the driving frequency is fixed, and the driving power of the atomizing plate is adjusted by directly changing the duty ratio (0-100%) of the PWM driving signal of the atomizing plate. However, this circuit control method has many disadvantages:
(1) Making the atomizing plate noisy.
(2) The atomization plate is enabled to vibrate irregularly, the atomization particle size is enlarged, and the atomization plate is not beneficial to the absorption of human eyes on atomized medicines.
(3) The service life of the atomizing plate is greatly shortened.
(4) The driving waveform of the atomizing plate is changed, and the sine wave waveform is distorted.
Therefore, an electrodeless atomization plate power regulating circuit capable of controlling and regulating the driving power of the atomization plate more smoothly and reducing the noise and the loss of the atomization plate is needed nowadays.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exist among the prior art, provide an electrodeless regulating circuit of atomizing piece power.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
an electrodeless power regulating circuit of an atomizing sheet comprises a digital-to-analog conversion unit, a voltage driving unit, a double current source and a power management unit which are electrically connected in sequence, wherein the input of the digital-to-analog conversion unit is a PWM (pulse width modulation) signal, and the output end of the power management unit is electrically connected with the atomizing sheet;
the voltage driving unit comprises a chip U1, and the chip U1 is an LM321 chip;
specifically, the + IN port of the chip U1 is electrically connected with the digital-to-analog conversion unit;
the V-port of the chip U1 is grounded;
the-IN port of the chip U1 is electrically connected with the OUT port;
the V + port of the chip U1 is electrically connected with an external power supply and a first filter circuit respectively; the first filter circuit comprises a grounding capacitor C3;
and the OUT port of the chip U1 is sequentially electrically connected with the resistor R3 and the double current sources. The utility model discloses a digital analog conversion unit reduces the ripple value of input PWM signal, and rethread voltage driver improves the driving force of circuit, and rethread double current source and power management unit control driving voltage carry out electrodeless change to a circuit that can be used for adjusting atomizing piece driving voltage is provided. The work of the atomizing plate is more stable, the working noise of the atomizing plate is reduced, the fog sprayed by the atomizing plate is softer, the particle size is smaller, and the atomizing plate is beneficial to absorption of human eyes.
As a preferred embodiment of the present invention, the digital-to-analog conversion unit includes a resistor R1, a resistor R2, a capacitor C1, and a capacitor C2;
the first end of the resistor R1 is electrically connected with the input port, and the second end of the resistor R1 is electrically connected with the capacitor C1 and then grounded;
a first end of the resistor R2 is electrically connected to a second end of the resistor R1, and second ends of the resistor R2 and the capacitor C2 are electrically connected to the voltage driving unit and the first end of the capacitor C2, respectively; the second end of the capacitor C2 is grounded. The utility model discloses a carry out two-stage RC low pass filter to the PWM signal of input and come analog-to-digital conversion circuit to keep the direct current component, reduce PWM ripple value.
As a preferred embodiment of the present invention, the external power source of the chip U1, to which the V + port is electrically connected, is 5.0V.
As a preferred embodiment of the present invention, the dual current source is a BCV61 transistor.
As the preferred embodiment of the present invention, the power management unit includes a chip U3, an inductor L1, a resistor R4, a resistor R5, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, and a capacitor C8.
As a preferred embodiment of the present invention, the chip U3 is a TMI3252 power management chip.
As a preferred scheme of the present invention, the GND port of the chip U3 is grounded; the LX port of the chip U3 is electrically connected with the second end of the capacitor C6; the IN port of the chip U3 is electrically connected with an external power supply, the capacitor C4, the capacitor C5 and the first end of the resistor R4 respectively; the BS port of the chip U3 is electrically connected with the capacitor C6, the inductor L1 and the atomization sheet in sequence; the EN port of the chip U3 is electrically connected with the second end of the resistor R4; the FB port of the chip U3 is electrically connected with the output end of the double current source and the second end of the resistor R5 respectively;
second ends of the capacitor C4 and the capacitor C5 are grounded;
a first end of the resistor R5 is electrically connected with a second end of the inductor L1;
the capacitor C7 is connected in parallel with two ends of the resistor R5; and two ends of the capacitor C8 are respectively connected with the second end of the inductor L1 and the ground wire.
As a preferred embodiment of the present invention, the external power supply electrically connected to the IN port of the chip U1 is 7.4V.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a digital analog conversion unit reduces the ripple value of input PWM signal, and rethread voltage driver improves the driving force of circuit, and rethread double current source and power management unit control driving voltage carry out electrodeless change to a circuit that can be used for adjusting atomizing piece driving voltage is provided. The work of the atomizing plate is more stable, the working noise of the atomizing plate is reduced, the fog sprayed by the atomizing plate is softer, the particle size is smaller, and the atomizing plate is beneficial to absorption of human eyes.
Drawings
Fig. 1 is a schematic structural diagram of an electrodeless power regulation circuit for an atomizing plate according to embodiment 1 of the present invention;
fig. 2 is an electrical schematic diagram of an atomization sheet power stepless regulation circuit according to embodiment 2 of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples and embodiments. However, it should not be understood that the scope of the above subject matter is limited to the following embodiments, and all the technologies realized based on the content of the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1, an electrodeless regulation circuit for power of an atomizing plate comprises a digital-to-analog conversion unit, a voltage driving unit, a double current source and a power management unit which are electrically connected in sequence, wherein the input of the digital-to-analog conversion unit is a PWM signal, and the output end of the power management unit is electrically connected with the atomizing plate.
Example 2
As shown in fig. 2, this embodiment is a specific implementation of the circuit described in embodiment 1.
The digital-to-analog conversion unit performs two-stage RC low-pass filtering on the input PWM signal to simulate a digital-to-analog conversion circuit, so that a direct-current component is reserved, and a PWM ripple value is reduced.
Specifically, the digital-to-analog conversion unit comprises a resistor R1, a resistor R2, a capacitor C1 and a capacitor C2; the first end of the resistor R1 is electrically connected with the input port, and the second end of the resistor R1 is electrically connected with the capacitor C1 and then grounded; a first end of the resistor R2 is electrically connected to a second end of the resistor R1, and second ends of the resistor R2 and the capacitor C2 are electrically connected to the voltage driving unit and the first end of the capacitor C2, respectively; the second terminal of the capacitor C2 is grounded.
The PWM signals after the two-stage RC low-pass filtering improve the driving capability through a chip U1 to form a voltage driver, and voltage is provided for the double current sources. Specifically, the voltage driving unit comprises a chip U1, and the chip U1 is an LM321 chip; and the + IN port of the chip U1 is electrically connected with the digital-to-analog conversion unit. The V-port of the chip U1 is grounded. the-IN port and the OUT port of the chip U1 are electrically connected. The V + port of the chip U1 is electrically connected with an external power supply and the first filter circuit respectively; the first filter circuit comprises a grounding capacitor C3; and an external power supply electrically connected with the V + port of the chip U1 is 5.0V. And the OUT port of the chip U1 is electrically connected with the resistor R3 and the double current sources in sequence.
The dual current source is a BCV61 transistor.
Specifically, the power management unit includes a chip U3, an inductor L1, a resistor R4, a resistor R5, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, and a capacitor C8. The chip U3 is a TMI3252 power management chip. The GND port of the chip U3 is grounded; the LX port of the chip U3 is electrically connected with the second end of the capacitor C6; the IN port of the chip U3 is electrically connected with an external power supply, the capacitor C4, the capacitor C5 and the first end of the resistor R4 respectively; the BS port of the chip U3 is electrically connected with the capacitor C6, the inductor L1 and the atomization sheet in sequence; the EN port of the chip U3 is electrically connected with the second end of the resistor R4; the FB port of the chip U3 is electrically connected with the output end of the double current source and the second end of the resistor R5 respectively; second ends of the capacitor C4 and the capacitor C5 are grounded; a first end of the resistor R5 is electrically connected with a second end of the inductor L1; the capacitor C7 is connected in parallel with two ends of the resistor R5; and two ends of the capacitor C8 are respectively connected with the second end of the inductor L1 and the ground wire.
Wherein, the external power supply electrically connected with the IN port of the chip U1 is 7.4V.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. An electrodeless regulation circuit for power of an atomizing plate is characterized by comprising a digital-to-analog conversion unit, a voltage driving unit, a double current source and a power management unit which are electrically connected in sequence; the input of the digital-to-analog conversion unit is a PWM signal, and the output end of the power supply management unit is electrically connected with the atomizing sheet;
the voltage driving unit comprises a chip U1, and the chip U1 is an LM321 chip;
specifically, the + IN port of the chip U1 is electrically connected with the digital-to-analog conversion unit;
the V-port of the chip U1 is grounded;
the-IN port of the chip U1 is electrically connected with the OUT port;
the V + port of the chip U1 is electrically connected with an external power supply and a first filter circuit respectively; the first filter circuit comprises a grounding capacitor C3;
and the OUT port of the chip U1 is sequentially electrically connected with the resistor R3 and the double current sources.
2. The stepless adjusting circuit for power of atomizing plate as claimed in claim 1, wherein said digital-to-analog converting unit comprises a resistor R1 and a resistor R2, a capacitor C1 and a capacitor C2;
the first end of the resistor R1 is electrically connected with the input port, and the second end of the resistor R1 is electrically connected with the capacitor C1 and then grounded;
a first end of the resistor R2 is electrically connected to a second end of the resistor R1, and second ends of the resistor R2 and the capacitor C2 are electrically connected to the voltage driving unit and the first end of the capacitor C2, respectively; the second end of the capacitor C2 is grounded.
3. The atomizing plate power stepless regulating circuit according to claim 1, characterized in that the external power supply electrically connected with the V + port of the chip U1 is 5.0V.
4. The atomizing plate power stepless regulating circuit according to claim 1, characterized in that the double current source is a BCV61 transistor.
5. The atomization plate power stepless regulation circuit according to claim 1, wherein the power management unit comprises a chip U3, an inductor L1, a resistor R4, a resistor R5, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7 and a capacitor C8.
6. The atomizing plate power stepless regulating circuit according to claim 5, characterized in that the chip U3 is a TMI3252 power management chip.
7. The atomization plate power stepless regulation circuit is characterized in that a GND port of the chip U3 is grounded; the LX port of the chip U3 is electrically connected with the second end of the capacitor C6; the IN port of the chip U3 is electrically connected with an external power supply, the capacitor C4, the capacitor C5 and the first end of the resistor R4 respectively; the BS port of the chip U3 is electrically connected with the capacitor C6, the inductor L1 and the atomization sheet in sequence; the EN port of the chip U3 is electrically connected with the second end of the resistor R4; the FB port of the chip U3 is electrically connected with the output end of the double current source and the second end of the resistor R5 respectively;
second ends of the capacitor C4 and the capacitor C5 are grounded;
a first end of the resistor R5 is electrically connected with a second end of the inductor L1;
the capacitor C7 is connected in parallel with two ends of the resistor R5; and two ends of the capacitor C8 are respectively connected with the second end of the inductor L1 and the ground wire.
8. The atomizing plate power stepless regulating circuit of claim 7, characterized IN that the external power supply electrically connected with the IN port of the chip U1 is 7.4V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222141517.5U CN217904389U (en) | 2022-08-15 | 2022-08-15 | Electrodeless regulating circuit of atomizing piece power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222141517.5U CN217904389U (en) | 2022-08-15 | 2022-08-15 | Electrodeless regulating circuit of atomizing piece power |
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| CN217904389U true CN217904389U (en) | 2022-11-25 |
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| CN202222141517.5U Active CN217904389U (en) | 2022-08-15 | 2022-08-15 | Electrodeless regulating circuit of atomizing piece power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115931985A (en) * | 2022-12-02 | 2023-04-07 | 成都目然健康科技有限公司 | Atomization amount measuring device based on capacitor, atomizer and atomization control method |
-
2022
- 2022-08-15 CN CN202222141517.5U patent/CN217904389U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115931985A (en) * | 2022-12-02 | 2023-04-07 | 成都目然健康科技有限公司 | Atomization amount measuring device based on capacitor, atomizer and atomization control method |
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