CN214044999U - Protection control circuit of ozone generator - Google Patents
Protection control circuit of ozone generator Download PDFInfo
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- CN214044999U CN214044999U CN202023241477.9U CN202023241477U CN214044999U CN 214044999 U CN214044999 U CN 214044999U CN 202023241477 U CN202023241477 U CN 202023241477U CN 214044999 U CN214044999 U CN 214044999U
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Abstract
The utility model particularly relates to an ozone generator's protection control circuit, including transistor Q1, wherein: a pin 3 of the transistor Q1 is connected with a thermistor PTC, a pin 3 of the transistor Q1 and the thermistor PTC are connected with a connector CN3, a pin 1 l of the transistor Q1 is connected with a chip, a pin 1 of the transistor Q1 is connected with a detection end Curr, and the detection end Curr is connected with the chip. The utility model has the advantages that: the circuit is connected with the thermistor PTC through a pin 3 of the transistor Q1, the temperature of the thermistor PTC reaches a specified value, the circuit is disconnected to achieve the purposes of protecting other components in the circuit and ensuring the stable and reliable operation of the circuit, and therefore the problem that the rear end circuit of the ozone generator is broken down due to instantaneous large current or short circuit is solved.
Description
Technical Field
The utility model relates to an ozone generator technical field specifically is an ozone generator's protection control circuit.
Background
The input voltage of the ozone generator is 12V or 5V generally, and air is fed if high ozone generation amount is required. The ozone generator is controlled by using an MOS tube driving circuit at present, and the problem of instantaneous large current or short circuit can be generated when the ozone generator is operated for a long time, so that the MOS of a back end circuit can be broken down.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned prior art not enough, provide a solve ozone generator heavy current in the twinkling of an eye or short circuit arouse the problem of puncturing back end circuit, reach the purpose of other components and parts in the protection circuit and guarantee the ozone generator's of the reliable and stable function of circuit protection control circuit.
The utility model discloses a protection control circuit of ozone generator, including transistor Q1, wherein: a pin 3 of the transistor Q1 is connected with a thermistor PTC, a pin 3 of the transistor Q1 and the thermistor PTC are connected with a connector CN3, a pin 1 l of the transistor Q1 is connected with a chip, a pin 1 of the transistor Q1 is connected with a detection end Curr, and the detection end Curr is connected with the chip.
Specifically, a first capacitor C1 is connected between pin 1 and pin 2 of the connector CN 3.
Specifically, a diode D1 is connected to the pin 3 of the transistor Q1 and the thermistor PTC.
Specifically, a fourth resistor R4 is connected between the pin 1 of the transistor Q1 and the detection terminal Curr.
More specifically, the third resistor R3 is connected to a common terminal of the pin 1 of the transistor Q1 and the fourth resistor R4.
Specifically, the fourth resistor R4 is connected to a second capacitor C2, and the second capacitor C2 is connected to a ground GND.
Specifically, a second resistor R2 is connected between pin 2 of the transistor Q1 and the chip O1.
Specifically, a first resistor R1 is connected to a common terminal of the chip and the second resistor R2, and the first resistor R1 is connected to a ground GND.
Specifically, the joint CN3 is connected to an ozone generator.
The utility model has the advantages that: the circuit is connected with the thermistor PTC through a pin 3 of the transistor Q1, the temperature of the thermistor PTC reaches a specified value, the circuit is disconnected to achieve the purposes of protecting other components in the circuit and ensuring the stable and reliable operation of the circuit, and therefore the problem that the rear end circuit of the ozone generator is broken down due to instantaneous large current or short circuit is solved.
Drawings
Fig. 1 is a circuit diagram of the present invention.
Fig. 2 is a schematic diagram of the connection of the control electric appliance, the single chip microcomputer and the ozone generator of the utility model.
The reference numbers are as follows: control electrical apparatus 1, singlechip 2, ozone generator 3.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1 to fig. 2, the utility model describes a protection control circuit of ozone generator, including transistor Q1, wherein: a pin 3 of the transistor Q1 is connected with a thermistor PTC, a pin 3 of the transistor Q1 and the thermistor PTC are connected with a connector CN3, a pin 1 l of the transistor Q1 is connected with the chip 2, a pin 1 of the transistor Q1 is connected with a detection end Curr, and the detection end Curr is connected with the chip 2.
The circuit is connected with the thermistor PTC through a pin 3 of the transistor Q1, the temperature of the thermistor PTC reaches a specified value, the circuit is disconnected to achieve the purposes of protecting other components in the circuit and ensuring the stable and reliable operation of the circuit, and therefore the problem that the rear end circuit is broken down due to instantaneous large current or short circuit of the ozone generator 3 is solved.
The resistance value of the thermistor PTC is 0.76 omega to 1.38 omega, even if the ozone generator 3 is in instant short circuit, the thermistor PTC is disconnected due to heating, the power supply of the ozone generator 3 is cut off, and therefore the whole circuit protection is achieved.
When the detection end Curr detects a large current, the detection end Curr feeds back to the chip 2, and the chip 2 performs processing to turn off the transistor Q1. The transistor Q1 is 3N 06;
a first capacitor C1 is connected between the pin 1 and the pin 2 of the connector CN3, and the capacity of the first capacitor C1 is 104 uf; the first capacitor C1 plays roles of charging, discharging, rectifying and oscillating;
a diode D1 is connected to the pin 3 of the transistor Q1 and the thermistor PTC. The model of the diode D1 is DS 1M; diode D1 has a unidirectional conduction function.
And a fourth resistor R4 is connected between the pin 1 of the transistor Q1 and the detection end Curr. The fourth resistor R4 is used for current limiting, shunt action, voltage division and voltage reduction; the fourth resistor R4 has a resistance of 100K omega.
The third resistor R3 is connected to the common end of the pin 1 of the transistor Q1 and the fourth resistor R4. The third resistor R3 has a resistance of 10K omega.
The fourth resistor R4 is connected to a second capacitor C2, and the second capacitor C2 is connected to a ground GND. The capacity of the second capacitor C2 is 0.1 uF.
A second resistor R2 is connected between pin 2 of the transistor Q1 and the chip O1. The resistance of the second resistor R2 is 220 Ω. The second resistor R2 is used for protecting the chip 2 and the transistor Q1.
The common end of the chip 2 and the second resistor R2 is connected with a first resistor R1, and the first resistor R1 is connected with a ground GND. The resistance of the second resistor R2 is 10K omega.
The above description and drawings are only for the purpose of illustrating preferred embodiments of the present invention and are not to be construed as limiting the present invention, and any modifications, equivalents or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A protection control circuit of an ozone generator comprises a transistor Q1, and is characterized in that: a pin 3 of the transistor Q1 is connected with a thermistor PTC, a pin 3 of the transistor Q1 and the thermistor PTC are connected with a connector CN3, a pin 1 l of the transistor Q1 is connected with a chip (2), a pin 1 of the transistor Q1 is connected with a detection end Curr, and the detection end Curr is connected with the chip (2).
2. The protection control circuit of the ozone generator according to claim 1, wherein: a first capacitor C1 is connected between pin 1 and pin 2 of the connector CN 3.
3. The protection control circuit of the ozone generator according to claim 1, wherein: a diode D1 is connected to the pin 3 of the transistor Q1 and the thermistor PTC.
4. The protection control circuit of the ozone generator according to claim 1, wherein: and a fourth resistor R4 is connected between the pin 1 of the transistor Q1 and the detection end Curr.
5. The protection control circuit of the ozone generator as claimed in claim 4, wherein: the third resistor R3 is connected to the common end of the pin 1 of the transistor Q1 and the fourth resistor R4.
6. The protection control circuit of the ozone generator as claimed in claim 4, wherein: the fourth resistor R4 is connected to a second capacitor C2, and the second capacitor C2 is connected to a ground GND.
7. The protection control circuit of the ozone generator according to claim 1, wherein: a second resistor R2 is connected between pin 2 of the transistor Q1 and the chip O1.
8. The protection control circuit of the ozone generator as claimed in claim 7, wherein: the common end of the chip (2) and the second resistor R2 is connected with a first resistor R1, and the first resistor R1 is connected with a ground wire GND.
9. The protection control circuit of the ozone generator according to claim 1, wherein: the joint CN3 is connected with an ozone generator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023241477.9U CN214044999U (en) | 2020-12-29 | 2020-12-29 | Protection control circuit of ozone generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023241477.9U CN214044999U (en) | 2020-12-29 | 2020-12-29 | Protection control circuit of ozone generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214044999U true CN214044999U (en) | 2021-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023241477.9U Active CN214044999U (en) | 2020-12-29 | 2020-12-29 | Protection control circuit of ozone generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN214044999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353865A (en) * | 2021-12-13 | 2022-04-15 | 广东盈科电子有限公司 | Temperature and humidity detection circuit and temperature and humidity detection method |
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2020
- 2020-12-29 CN CN202023241477.9U patent/CN214044999U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353865A (en) * | 2021-12-13 | 2022-04-15 | 广东盈科电子有限公司 | Temperature and humidity detection circuit and temperature and humidity detection method |
| CN114353865B (en) * | 2021-12-13 | 2024-04-16 | 广东盈科电子有限公司 | Temperature and humidity detection circuit and temperature and humidity detection method |
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