CN203233138U - Short-circuit protection circuit preventing heating failure - Google Patents
Short-circuit protection circuit preventing heating failure Download PDFInfo
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- CN203233138U CN203233138U CN 201220700021 CN201220700021U CN203233138U CN 203233138 U CN203233138 U CN 203233138U CN 201220700021 CN201220700021 CN 201220700021 CN 201220700021 U CN201220700021 U CN 201220700021U CN 203233138 U CN203233138 U CN 203233138U
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Abstract
The utility model discloses a short-circuit protection circuit preventing heating failure; and the protection circuit mainly comprises a timer chip and a small power relay in cooperation connection. A timing function of the timer chip CD4060 is employed; an inverter, a triode Q2 and the relay are controlled; so the short-circuit protection circuit can control on/off of an heating input terminal and a heating output terminal with support of the heating protection circuit, thereby realizing control of preventing heating failure; the protection circuit is simple in structure, easy in operation, high in stability and reliability, can better solve existing problems, provides the heating protection device with high performance, and has excellent application prospect.
Description
Technical field
The utility model belongs to electrical equipment heated protective field, relates in particular to the short-circuit protection circuit that a kind of prevention adds thermal failure.
Background technology
Along with development of science and technology; all kinds of power consumption equipments that people use in life all will be equipped with the certain protection circuit; huge such as occupancy volume on market such as air-conditioning, refrigerator, electric heating class boiler; for this reason; to the Based Intelligent Control of the heating protection circuit of suchlike Related product with require also need be along with development of science and technology increases day by day, how to design the subject matter that designers research and develop for a long time in the integrated application problem that effective novel heating protection circuit is based on Single Chip Microcomputer (SCM) system.
The utility model content
The purpose of this utility model is to utilize a kind of high performance heating protecting device, is intended to solve the Single Chip Microcomputer (SCM) system application problem that exists in the existing heating protection circuit.
The purpose of this utility model is to provide a kind of prevention to add the short-circuit protection circuit of thermal failure, and described protective circuit is mainly by timer chip, triode Q2 and the low power relay composition that is connected.
Further, described timer chip adopts timer chip CD4060, connects between No. 9 pin of chip CD4060 and No. 10 pin between 4, No. 9 pin of resistance R of the capacitor C 1 of 1 μ F and 5M Ω and No. 11 pin and connects the capacitor C 1 of 1 μ F and the resistance R 2 of 10M Ω; No. 8 pin ground connection; No. 12 pin is the control input end, connects the 12V DC power supply after connecing 10k Ω resistance R 6; Connect the 12V power supply after No. 16 pin connects 10 Europe resistance R 1; No. 6 pin connect and connect 300 Europe resistance R 5 behind the inverter is the base stage of the triode Q2 of 2N3904 with model, the grounded emitter of triode Q2, and collector electrode connects the 12V power supply after connecing the resistance R 3 serial connections 10 Europe resistance R 1 of 1k Ω.
Further, described low power relay adopts low power relay JQX-115F, and No. 1 pin of relay J QX-115F connects the emitter that model is the triode Q2 of 2N3904, and No. 8 pin connects the 12V power supply; No. 3 pin and No. 6 pin are the heating input; The hot output terminal that adds that No. 5 pin and No. 7 pin are relay.
The prevention that the utility model provides adds the short-circuit protection circuit of thermal failure; under the support of heating protection circuit; adopt timer chip CD4060 to be connected with low power relay JQX-115F; realize the regularly function of heating; for heating provides fail safe and reliability; can effectively prevent to add thermal failure; realize the intellectuality control of heating, saved manpower, improved people's living standard; and circuit can carry out dynamic instantaneous adjustment to temperature; response speed is fast, and is simple in structure, easy to operate; practical, have a good application prospect.
Description of drawings
Fig. 1 is the circuit diagram that prevention that the utility model embodiment provides adds the short-circuit protection circuit of thermal failure.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The novel heating protection circuit connection layout that Fig. 1 lost efficacy for the prevention that the utility model embodiment provides.
This novel heating protection circuit mainly is connected by timer chip CD4060 and low power relay JQX-115F and forms.Its concrete connected mode is:
Timer chip CD4060 part connects between No. 9 pin of chip CD4060 and No. 10 pin between 4, No. 9 pin of resistance R of the capacitor C 1 of 1 μ F and 5M Ω and No. 11 pin and connects the capacitor C 1 of 1 μ F and the resistance R 2 of 10M Ω; No. 8 pin ground connection; No. 12 pin is the control input end, connects the 12V DC power supply after connecing 10k Ω resistance R 6; Connect the 12V power supply after No. 16 pin connects 10 Europe resistance R 1; No. 6 pin connect and connect 300 Europe resistance R 5 behind the inverter is the base stage of the triode Q2 of 2N3904 with model, the grounded emitter of triode Q2, and collector electrode connects the 12V power supply after connecing the resistance R 3 serial connections 10 Europe resistance R 1 of 1k Ω.
Low power relay JQX-115F part, No. 1 pin of relay J QX-115F connects the emitter that model is the triode Q2 of 2N3904, and No. 8 pin connects the 12V power supply; No. 3 pin and No. 6 pin are the heating input; The hot output terminal that adds that No. 5 pin and No. 7 pin are relay.
The utility model embodiment provides a kind of novel heating protection circuit of losing efficacy of preventing, and mainly is connected by timer chip CD4060 and low power relay JQX-115F and forms.Include control end, the CD4060 chip, inverter, relay, triode Q2 heats input and adds hot output terminal.This circuit can play the function of output short-circuit protection, loses efficacy to prevent heating.
The concrete operation principle of this novel heating protection circuit is: when control end was given low level, CD4060 picked up counting, and No. 6 pin output low levels of chip this moment become high level through inverter, the Q2 conducting, and relay is started working, and fire end just can be worked; Timing time arrives, and No. 6 pin output high level becomes low level through inverter, and Q2 ends, and relay can not be worked, and the signal of heating input can not be delivered to the fire end heating, so can not heat.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (3)
1. a prevention adds the short-circuit protection circuit of thermal failure, it is characterized in that described protective circuit mainly is connected by timer chip and low power relay and forms.
2. prevention as claimed in claim 1 adds the short-circuit protection circuit of thermal failure, it is characterized in that, described timer chip adopts timer chip CD4060, connect the capacitor C 1 of 1 μ F and the resistance R 4 of 5M Ω between No. 9 pin of chip CD4060 and No. 10 pin, connect the capacitor C 1 of 1 μ F and the resistance R 2 of 10M Ω between No. 9 pin of chip CD4060 and No. 11 pin; No. 8 pin ground connection; No. 12 pin is the control input end, connects the 12V DC power supply after connecing 10k Ω resistance R 6; Connect the 12V power supply after No. 16 pin connects 10 Europe resistance R 1; No. 6 pin connect and connect 300 Europe resistance R 5 behind the inverter is the base stage of the triode Q2 of 2N3904 with model, the grounded emitter of triode Q2, and collector electrode connects the 12V power supply after connecing the resistance R 3 serial connections 10 Europe resistance R 1 of 1k Ω.
3. prevention as claimed in claim 1 adds the short-circuit protection circuit of thermal failure, it is characterized in that, described low power relay adopts low power relay JQX-115F, and No. 1 pin of relay J QX-115F connects the emitter that model is the triode Q2 of 2N3904, and No. 8 pin connects the 12V power supply; No. 3 pin and No. 6 pin are the heating input; The hot output terminal that adds that No. 5 pin and No. 7 pin are relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220700021 CN203233138U (en) | 2012-12-18 | 2012-12-18 | Short-circuit protection circuit preventing heating failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220700021 CN203233138U (en) | 2012-12-18 | 2012-12-18 | Short-circuit protection circuit preventing heating failure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203233138U true CN203233138U (en) | 2013-10-09 |
Family
ID=49289242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220700021 Expired - Lifetime CN203233138U (en) | 2012-12-18 | 2012-12-18 | Short-circuit protection circuit preventing heating failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203233138U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998314A (en) * | 2015-06-24 | 2015-10-28 | 刘崇恺 | Washing system for urinary surgery |
| CN105343977A (en) * | 2015-10-20 | 2016-02-24 | 山东大学齐鲁医院 | Control system of anesthesia vaporizer |
| CN105381478A (en) * | 2015-12-16 | 2016-03-09 | 李升芹 | Multifunctional sterilizer for tuberculosis internal medicine |
| CN107212757A (en) * | 2016-03-21 | 2017-09-29 | 广东美的生活电器制造有限公司 | The control method of beverage machine |
-
2012
- 2012-12-18 CN CN 201220700021 patent/CN203233138U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998314A (en) * | 2015-06-24 | 2015-10-28 | 刘崇恺 | Washing system for urinary surgery |
| CN105343977A (en) * | 2015-10-20 | 2016-02-24 | 山东大学齐鲁医院 | Control system of anesthesia vaporizer |
| CN105381478A (en) * | 2015-12-16 | 2016-03-09 | 李升芹 | Multifunctional sterilizer for tuberculosis internal medicine |
| CN107212757A (en) * | 2016-03-21 | 2017-09-29 | 广东美的生活电器制造有限公司 | The control method of beverage machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131009 |
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| CX01 | Expiry of patent term |