CN202077003U - Double voltage hair dryer automatic switching circuit - Google Patents
Double voltage hair dryer automatic switching circuit Download PDFInfo
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- CN202077003U CN202077003U CN2011201638204U CN201120163820U CN202077003U CN 202077003 U CN202077003 U CN 202077003U CN 2011201638204 U CN2011201638204 U CN 2011201638204U CN 201120163820 U CN201120163820 U CN 201120163820U CN 202077003 U CN202077003 U CN 202077003U
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- triode
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- chip microcomputer
- piezoelectricity
- base stage
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Abstract
The utility model relates to a double voltage hair dryer automatic switching circuit which includes a voltage input terminal, a hair dryer motor, and a voltage identification circuit. The voltage identification circuit is electrically connected with the voltage input terminal and the motor respectively. The double voltage hair dryer automatic switching circuit has the characteristics of simple structure, convenience in use, safety, and reliability.
Description
Technical field
The utility model relates to the power supply circuits of two piezoelectricity blowings, is specifically related to two piezoelectricity blowing automatic switch-over circuits.
Background technology
At present, the two piezoelectricity blowings on the market all are to adopt mechanical switch to come switched voltage.Adopt the mode of mechanical switch to come switched voltage, security incident appears easily, and use also trouble very, when two piezoelectricity are dried external power supply, the user is careless and inadvertent sometimes, forget mechanical switch is pushed suitable voltage location, will burn out the motor of hair dryer like this, caused loss.
The utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of two piezoelectricity blowing automatic switch-over circuits simple in structure, esy to use, safe and reliable.
In order to achieve the above object, the technical scheme that the utility model adopted is as follows:
Two piezoelectricity blowing automatic switch-over circuits comprise the motor and the voltage identification circuit of voltage input end, hair dryer, and described voltage identification circuit electrically connects with voltage input end, motor respectively.
Described voltage identification circuit comprises single-chip microcomputer U1, triode Q1, triode Q5, triode Q7, triode Q3, resistance R 22, resistance R 23, dividing potential drop heating wire R4, bidirectional triode thyristor T0 and bidirectional triode thyristor T1; The base stage of triode Q5 is connected with the live wire of voltage input end by resistance R 17, resistance R 18, grounded emitter, and collector electrode is connected with the PB port of single-chip microcomputer U1, and described resistance R 17 is connected in series with resistance R 18; The base stage of triode Q1 is connected with the live wire of voltage input end by resistance R 22, and base stage is also passed through resistance R 23 ground connection, grounded emitter, and collector electrode is connected with the PA port of single-chip microcomputer U1; The base stage of triode Q7 is connected with the 2nd PA port of single-chip microcomputer U1, grounded collector, and emitter is connected with bidirectional triode thyristor T0; The end of bidirectional triode thyristor T0 is connected with the zero line of voltage input end, and the other end is connected with motor; The end of bidirectional triode thyristor T1 is connected with the zero line of voltage input end, and the other end is connected with motor by dividing potential drop heating wire R4; The emitter of triode Q3 is connected with bidirectional triode thyristor T1, grounded collector, and base stage is connected with the 3rd PA port of single-chip microcomputer U1.
Preferably, the base stage of triode Q5 is by voltage stabilizing didoe D3 ground connection.
Preferably, described voltage identification circuit also comprises capacitor C 12, and described capacitor C 12 is connected across the two ends of resistance R 23.
Preferably, the base stage of triode Q7 is connected with the 2nd PA port of single-chip microcomputer U1 by resistance R 16.
Preferably, the emitter of triode Q3 is connected with bidirectional triode thyristor T1 by resistance R 5.
Preferably, the base stage of triode Q3 is connected with the 3rd PA port of single-chip microcomputer U1 by resistance R 13.
Preferably, described single-chip microcomputer U1 is H149R30A.
The utility model compared with prior art adopts the control mode of electronic circuit to substitute mechanical switch, thereby has improved convenience and the fail safe used.
Description of drawings
Fig. 1 is the schematic diagram of two piezoelectricity blowing automatic switch-over circuits of the utility model embodiment.
Embodiment
As shown in Figure 1, two piezoelectricity blowing automatic switch-over circuits comprise the motor M1 and the voltage identification circuit of voltage input end, hair dryer.
Described voltage identification circuit comprises single-chip microcomputer U1, triode Q1, triode Q5, triode Q7, triode Q3, resistance R 22, resistance R 23, capacitor C 12, dividing potential drop heating wire R4, bidirectional triode thyristor T0 and bidirectional triode thyristor T1.Single-chip microcomputer U1 adopts the H149R30A chip.
The base stage of triode Q5 is connected with the live wire AC-L of voltage input end by resistance R 18, resistance R 17, and described resistance R 17 is connected in series with resistance R 18, and base stage is also passed through voltage stabilizing didoe D3 ground connection, grounded emitter, and collector electrode is connected with the PB0 port of single-chip microcomputer U1.
The base stage of triode Q1 is connected with the live wire AC-L of voltage input end by resistance R 22, and base stage is also passed through resistance R 23 ground connection, grounded emitter, and collector electrode is connected with the PA4 port of single-chip microcomputer U1.Capacitor C 12 is connected across the two ends of resistance R 23.
The base stage of triode Q7 is connected with the PA2 port of single-chip microcomputer U1 by resistance R 16, grounded collector, and emitter is connected with bidirectional triode thyristor T0.
The end of bidirectional triode thyristor T0 is connected with the zero line AC-N of voltage input end, and the other end is connected with motor M1.
The end of bidirectional triode thyristor T1 is connected with the zero line AC-N of voltage input end, and the other end is connected with motor M1 by dividing potential drop heating wire R4.
The emitter of triode Q3 is connected with bidirectional triode thyristor T1 by resistance R 5, grounded collector, and base stage is connected with the PA0 port of single-chip microcomputer U1 by resistance R 13.
The operation principle of present embodiment is as follows:
Electric main is after resistance R 22, resistance R 23 dividing potential drops, base bias is provided for triode Q1, capacitor C 12 is considered except that noise jamming, triode Q1 can exchange the positive half period conducting when civil power is imported greater than 150V AC, the collector electrode of triode Q1 is connected to the PA4 port of single-chip microcomputer U1, this moment, the PA4 port was a square-wave signal, single-chip microcomputer U1 discerns by the zero cross signal that cooperates the PB0 port, be judged as the input of 220V voltage, at this moment, triode Q3 admittance, bidirectional triode thyristor T1 work, 220V voltage is after dividing potential drop heating wire R4 dividing potential drop, and the voltage that adds to motor M1 is 110V.
When civil power is imported less than 150V AC, triode Q1 base bias voltage cross low can't conducting, triode Q1 collector electrode is connected to the PA4 port of single-chip microcomputer U1, this moment, the PA4 port was a high level always, when single-chip microcomputer U1 recognizes this port always for high level, was judged as the input of 110V voltage, at this moment, triode Q7 conducting, bidirectional triode thyristor T0 work, the direct supply motor M1 of 110V voltage.
The control mode of electronic circuit that adopts present embodiment realizes that voltage automaticallyes switch, thereby has improved the ease of use and the fail safe of two piezoelectricity blowings, has prolonged the useful life of hair dryer.
The foregoing description is that the utility model is comparatively preferably a kind of, and simple change that those skilled in the art make in protection range of the present utility model or replacement all drop in the protection range of the present utility model.
Claims (8)
1. two piezoelectricity blowing automatic switch-over circuits comprise the motor of voltage input end and hair dryer it is characterized in that this automatic switch-over circuit also comprises the voltage identification circuit that described voltage identification circuit electrically connects with voltage input end, motor respectively.
2. as claimed in claim 1 pair of piezoelectricity blowing automatic switch-over circuit, it is characterized in that described voltage identification circuit comprises single-chip microcomputer U1, triode Q1, triode Q5, triode Q7, triode Q3, resistance R 22, resistance R 23, dividing potential drop heating wire R4, bidirectional triode thyristor T0 and bidirectional triode thyristor T1; The base stage of triode Q5 is connected with the live wire of voltage input end by resistance R 17, resistance R 18, grounded emitter, and collector electrode is connected with the PB port of single-chip microcomputer U1, and described resistance R 17 is connected in series with resistance R 18; The base stage of triode Q1 is connected with the live wire of voltage input end by resistance R 22, and base stage is also passed through resistance R 23 ground connection, grounded emitter, and collector electrode is connected with the PA port of single-chip microcomputer U1; The base stage of triode Q7 is connected with the 2nd PA port of single-chip microcomputer U1, grounded collector, and emitter is connected with bidirectional triode thyristor T0; The end of bidirectional triode thyristor T0 is connected with the zero line of voltage input end, and the other end is connected with motor; The end of bidirectional triode thyristor T1 is connected with the zero line of voltage input end, and the other end is connected with motor by dividing potential drop heating wire R4; The emitter of triode Q3 is connected with bidirectional triode thyristor T1, grounded collector, and base stage is connected with the 3rd PA port of single-chip microcomputer U1.
3. as claimed in claim 2 pair of piezoelectricity blowing automatic switch-over circuit is characterized in that the base stage of triode Q5 is by voltage stabilizing didoe D3 ground connection.
4. as claimed in claim 2 pair of piezoelectricity blowing automatic switch-over circuit is characterized in that described voltage identification circuit also comprises capacitor C 12, and described capacitor C 12 is connected across the two ends of resistance R 23.
5. as claimed in claim 2 pair of piezoelectricity blowing automatic switch-over circuit is characterized in that the base stage of triode Q7 is connected with the 2nd PA port of single-chip microcomputer U1 by resistance R 16.
6. as claimed in claim 2 pair of piezoelectricity blowing automatic switch-over circuit is characterized in that the emitter of triode Q3 is connected with bidirectional triode thyristor T1 by resistance R 5.
7. as claimed in claim 2 pair of piezoelectricity blowing automatic switch-over circuit is characterized in that the base stage of triode Q3 is connected with the 3rd PA port of single-chip microcomputer U1 by resistance R 13.
8. as each described pair of piezoelectricity blowing automatic switch-over circuit of claim 2-7, it is characterized in that described single-chip microcomputer U1 is H149R30A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201638204U CN202077003U (en) | 2011-05-20 | 2011-05-20 | Double voltage hair dryer automatic switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201638204U CN202077003U (en) | 2011-05-20 | 2011-05-20 | Double voltage hair dryer automatic switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202077003U true CN202077003U (en) | 2011-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201638204U Expired - Lifetime CN202077003U (en) | 2011-05-20 | 2011-05-20 | Double voltage hair dryer automatic switching circuit |
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| Country | Link |
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| CN (1) | CN202077003U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103844546A (en) * | 2012-11-30 | 2014-06-11 | 松下电器产业株式会社 | Hair care device |
| CN105807669A (en) * | 2016-05-04 | 2016-07-27 | 深圳市奋达科技股份有限公司 | Automatic voltage switching circuit and electric hair drier |
| CN106230420A (en) * | 2016-08-31 | 2016-12-14 | 浙江斯大威电器有限公司 | A kind of hair-dryer voltage adaptive identification circuit |
| CN108365783A (en) * | 2018-04-12 | 2018-08-03 | 厦门芯阳科技股份有限公司 | A kind of electric hair drier control circuit of high power utilization rate |
| CN108401396A (en) * | 2017-02-08 | 2018-08-14 | 台达电子工业股份有限公司 | Automatically switch the heating device and its operating method of heater |
-
2011
- 2011-05-20 CN CN2011201638204U patent/CN202077003U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103844546A (en) * | 2012-11-30 | 2014-06-11 | 松下电器产业株式会社 | Hair care device |
| CN103844546B (en) * | 2012-11-30 | 2016-08-24 | 松下电器产业株式会社 | Hair-protecting device |
| CN105807669A (en) * | 2016-05-04 | 2016-07-27 | 深圳市奋达科技股份有限公司 | Automatic voltage switching circuit and electric hair drier |
| CN105807669B (en) * | 2016-05-04 | 2018-12-18 | 深圳市奋达科技股份有限公司 | A kind of voltage automatic switch-over circuit and hair dryer |
| CN106230420A (en) * | 2016-08-31 | 2016-12-14 | 浙江斯大威电器有限公司 | A kind of hair-dryer voltage adaptive identification circuit |
| CN106230420B (en) * | 2016-08-31 | 2023-06-30 | 浙江斯大威电器有限公司 | Self-adaptive voltage identification circuit for hair dryer |
| CN108401396A (en) * | 2017-02-08 | 2018-08-14 | 台达电子工业股份有限公司 | Automatically switch the heating device and its operating method of heater |
| US10716170B2 (en) | 2017-02-08 | 2020-07-14 | Delta Electronics, Inc. | Heating apparatus with automatic switching heaters and method of operating the same |
| CN108401396B (en) * | 2017-02-08 | 2021-05-14 | 台达电子工业股份有限公司 | Heating device capable of automatically switching heaters and operation method thereof |
| CN108365783A (en) * | 2018-04-12 | 2018-08-03 | 厦门芯阳科技股份有限公司 | A kind of electric hair drier control circuit of high power utilization rate |
| CN108365783B (en) * | 2018-04-12 | 2019-10-01 | 厦门芯阳科技股份有限公司 | A kind of electric hair drier control circuit of high power utilization rate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160401 Address after: 518108 Guangdong city of Shenzhen province Baoan District Shiyan Chau Road FENDA Technology Park Patentee after: Shenzhen Fenda Technology Co., Ltd. Address before: 518108 Guangdong city of Shenzhen province Baoan District Shiyan Chau Road FENDA Technology Park Patentee before: Shenzhen Baoan Fenda Industrial Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |