CN203502121U - Electrical equipment overheat alarm circuit - Google Patents
Electrical equipment overheat alarm circuit Download PDFInfo
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- CN203502121U CN203502121U CN201320639358.XU CN201320639358U CN203502121U CN 203502121 U CN203502121 U CN 203502121U CN 201320639358 U CN201320639358 U CN 201320639358U CN 203502121 U CN203502121 U CN 203502121U
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Abstract
The utility model discloses an electrical equipment overheat alarm circuit, comprising a first resistor to a seventh resistor, a slide rheostat, an NTC thermistor, a first triode, a second triode, a third triode, a first capacitor to an eighth capacitor, a first chip, a second chip, a third chip, a fourth chip, a voltage-regulator diode, a loudspeaker, and a voltage reduction rectifier. When an electrical equipment maintenance personnel hears sirens the loudspeaker gives out, the personnel can accurately know the overheated electrical equipment, so as to take corresponding measures to process the overheat electrical equipment, and the equipment is maintained. The circuit improves maintenance yield rate of business equipment, and improves production efficiency to a certain extent. The circuit uses an integrated chip technology, and is advantaged by low cost, and simple installation, and is beneficial for popularization.
Description
Technical field
The utility model relates to a kind of warning circuit, relates in particular to a kind of device of overheating of electrical warning circuit.
Background technology
For a long time, the running of the most factories of China and produce and all will rely on large-scale plant equipment and electrical equipment, can know the running status of electrical equipment of factory and the economic benefit that is directly connected to enterprise serviceable life thus.If can not take rational maintenance measure or effectively safety management, can not guarantee the quality safety of electrical equipment and the schedule of productive target, in order to reach high efficiency production, create more enterprise value, often electrical equipment is day and night ceaselessly to work, device of overheating of electrical is the problem that present most of factory all will run into, and overheated meeting causes electrical equipment to break down, and may cause the generation of industrial fire when serious.Some advanced electrical equipments have the overheating protection of oneself; when temperature overheating, can automatically detect then power-off shuts down; after apparatus cools, can normally work again; so reason that plant maintenance maintainer often can not find electrical equipment to shut down; only as once accidental glitch; and some electrical equipments that fall behind often do not have the warning protection of apparatus overheat, the overheated fault generation that is easy to cause equipment.
Utility model content
The purpose of this utility model provides a kind of device of overheating of electrical warning circuit with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises the first resistance to the seven resistance, slide rheostat, NTC thermistor, the first triode, the second triode, the 3rd triode, the first electric capacity to the eight electric capacity, the first chip, the second chip, the 3rd chip, four-core sheet, voltage stabilizing diode, loudspeaker and buck rectifier, the first end while of described the first resistance and the first end of described the second resistance, the first end of described the 3rd resistance, the 3rd pin of described the first chip, the first end of described the 7th resistance, the second pin of described the 3rd chip, described the 6th positive pole of electric capacity and the first pin of described four-core sheet are connected, the second end of described the first resistance is connected with sliding end with the first end of described slide rheostat simultaneously, the second end of described slide rheostat is connected with the base stage of described the second triode with the base stage of described the first triode simultaneously, the collector of described the first triode is unsettled, the emitter while of described the first triode and the emitter of described the 3rd triode, the negative pole of described the first electric capacity, the 8th pin of described the first chip, the second end of described the second electric capacity, the 4th pin of described the second chip, the positive pole of described voltage stabilizing diode, the 5th pin of described the 3rd chip and the 6th pin, the second end of described loudspeaker, the negative pole of described the 6th electric capacity, the 3rd pin of described four-core sheet, the 4th pin of the negative pole of described the 7th electric capacity and described buck rectifier is connected, the emitter of described the second triode connects the base stage of described the 3rd triode, the collector while of described the second triode and the collector of described the 3rd triode, the second end of described the 3rd resistance is connected with the second pin of described the first chip, the second end of described the second resistance is connected with the first end of described the 4th resistance and the first pin of described the first chip simultaneously, the second end of described the 4th resistance is connected with the positive pole of the 5th pin and described the first electric capacity with the 6th pin of described the first chip simultaneously, the 7th pin of described the first chip connects the first end of described the second electric capacity, the 4th pin of described the first chip connects the first end of described the 5th resistance, the second end of described the 5th resistance connects the first pin of described the second chip, the second pin of described the second chip connects the first end of described the 6th resistance, the second end while of described the 6th resistance and the 3rd pin of described the second chip, the second end of described the 7th resistance and the negative pole of described voltage stabilizing diode are connected, the 5th pin of described the second chip connects the first end of described the 3rd electric capacity, the second end of described the 3rd electric capacity connects the first pin of described the 3rd chip, the 3rd pin of described the 3rd chip is connected with the second end with the first end of described the 4th electric capacity respectively with the 4th pin, the 7th pin of described the 3rd chip connects the first end of described the 5th electric capacity, the second end of described the 5th electric capacity connects the first end of described loudspeaker, the second pin of described four-core sheet is connected with the positive pole of described the 7th electric capacity and the 3rd pin of described buck rectifier simultaneously, the first pin of described buck rectifier is connected with the first end of described NTC thermistor with the first end of described the 8th electric capacity simultaneously, the second end of described the 8th electric capacity is connected with cathode voltage input end with the second end of described NTC thermistor simultaneously, the second pin of described buck rectifier connects cathode voltage input end.
Particularly, described the first chip is the integrated chip of model NE555, the simulation sounding integrated chip that described the second chip is model TM-801A, described the 3rd chip is the audio frequency amplification chip of model LM-386, the three-terminal voltage-stabilizing integrated chip that described four-core sheet is model 7806; Described the first electric capacity, described the 6th electric capacity, described the 7th electric capacity have been polar capacitor.
The beneficial effects of the utility model are:
When device of overheating of electrical, loudspeaker of the present utility model can send the alarm sound of simulation, prompting staff equipment running temperature has surpassed normal working temperature, staff hears that alarm sound just knows what device of overheating of electrical caused, just can take the operation of corresponding measure arrestment.By warning in advance, staff can process the problems of excessive heat of electrical equipment timely, has avoided the generation of equipment failure, can equipment be safeguarded timely and be managed, and has effectively reduced the loss of enterprise.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1: the utility model comprises that the first resistance R 1 is to the 7th resistance R 7, slide rheostat RP, NTC thermistor RT, the first triode VT1, the second triode VT2, the 3rd triode VT3, the first capacitor C 1 is to the 8th capacitor C 8, the first chip IC 1, the second chip IC 2, the 3rd chip IC 3, four-core sheet IC4, voltage stabilizing diode D, loudspeaker B and buck rectifier Q, the first end while of the first resistance R 1 and the first end of the second resistance R 2, the first end of the 3rd resistance R 3, the 3rd pin of the first chip IC 1, the first end of the 7th resistance R 7, the second pin of the 3rd chip IC 3, the positive pole of the 6th capacitor C 6 is connected with the first pin of four-core sheet IC4, the second end of the first resistance R 1 is connected with sliding end with the first end of slide rheostat RP simultaneously, the second end of slide rheostat RP is connected with the base stage of the second triode VT2 with the base stage of the first triode VT1 simultaneously, the collector of the first triode VT1 is unsettled, the emitter while of the first triode VT1 and the emitter of the 3rd triode VT3, the negative pole of the first capacitor C 1, the IC1 of the first chip the 8th pin, the second end of the second capacitor C 2, the 4th pin of the second chip IC 2, the positive pole of voltage stabilizing diode D, the 5th pin of the 3rd chip IC 3 and the 6th pin, the second end of loudspeaker B, the negative pole of the 6th capacitor C 6, the 3rd pin of four-core sheet IC4, the 4th pin of the negative pole of the 7th capacitor C 7 and buck rectifier Q is connected, the emitter of the second triode VT2 connects the base stage of the 3rd triode VT3, the collector while of the second triode VT2 and the collector of the 3rd triode VT3, the second end of the 3rd resistance R 3 is connected with the second pin of the first chip IC 1, the second end of the second resistance R 2 is connected with the first pin of the first chip IC 1 with the first end of the 4th resistance R 4 simultaneously, the second end of the 4th resistance R 4 is connected with the positive pole of the 5th pin and the first capacitor C 1 with the 6th pin of the first chip IC 1 simultaneously, the 7th pin of the first chip IC 1 connects the first end of the second capacitor C 2, the 4th pin of the first chip IC 1 connects the first end of the 5th resistance R 5, the second end of the 5th resistance R 5 connects the first pin of the second chip IC 2, the second pin of the second chip IC 2 connects the first end of the 6th resistance R 6, the second end while of the 6th resistance R 6 and the 3rd pin of the second chip IC 2, the second end of the 7th resistance R 7 is connected with the negative pole of voltage stabilizing diode D, the 5th pin of the second chip IC 2 connects the first end of the 3rd capacitor C 3, the second end of the 3rd capacitor C 3 connects the first pin of the 3rd chip IC 3, the 3rd pin of the 3rd chip IC 3 is connected with the second end with the first end of the 4th capacitor C 4 respectively with the 4th pin, the 7th pin of the 3rd chip IC 3 connects the first end of the 5th capacitor C 5, the second end of the 5th capacitor C 5 connects the first end of loudspeaker B, the second pin of four-core sheet IC4 is connected with the positive pole of the 7th capacitor C 7 and the 3rd pin of buck rectifier Q simultaneously, the first pin of buck rectifier Q is connected with the first end of NTC thermistor RT with the first end of the 8th capacitor C 8 simultaneously, the second end of the 8th capacitor C 8 is connected with cathode voltage input end with the second end of NTC thermistor RT simultaneously, the second pin of buck rectifier Q connects cathode voltage input end, the first chip IC 1 is the integrated chip of model NE555, the second chip IC 2 is the simulation sounding integrated chip of model TM-801A, the 3rd chip IC 3 is the audio frequency amplification chip of model LM-386, four-core sheet IC4 is the three-terminal voltage-stabilizing integrated chip of model 7806, and the first capacitor C 1, the 6th capacitor C 2, the 7th capacitor C 7 have been polar capacitor.
As shown in Figure 1: the utility model is comprised of NTC thermistor RT, the first chip IC 1, the second chip IC 2, the 3rd chip IC 3 and the buck rectifier Q etc. of negative temperature coefficient.The first chip IC 1 and the second resistance R 2, the 4th resistance R 4, the first capacitor C 1 grade forms a controllable type multivibrator, when electrical equipment surpasses maximum operating temperature, the temperature of NTC thermistor raises and reaches transition point, resistance exponentially form declines, buck rectifier Q two ends input voltage increases, output voltage after transformation and rectification also increases thereupon, reach the operating voltage of whole circuit, whole circuit is started working, wherein simulating chimes of doom sends after the 3rd chip IC 3 is amplified and exports from loudspeaker B from the second chip IC 2, reach the alarm effect of device of overheating of electrical.
Claims (3)
1. a device of overheating of electrical warning circuit, it is characterized in that: comprise the first resistance to the seven resistance, slide rheostat, NTC thermistor, the first triode, the second triode, the 3rd triode, the first electric capacity to the eight electric capacity, the first chip, the second chip, the 3rd chip, four-core sheet, voltage stabilizing diode, loudspeaker and buck rectifier, the first end while of described the first resistance and the first end of described the second resistance, the first end of described the 3rd resistance, the 3rd pin of described the first chip, the first end of described the 7th resistance, the second pin of described the 3rd chip, described the 6th positive pole of electric capacity and the first pin of described four-core sheet are connected, the second end of described the first resistance is connected with sliding end with the first end of described slide rheostat simultaneously, the second end of described slide rheostat is connected with the base stage of described the second triode with the base stage of described the first triode simultaneously, the collector of described the first triode is unsettled, the emitter while of described the first triode and the emitter of described the 3rd triode, the negative pole of described the first electric capacity, the 8th pin of described the first chip, the second end of described the second electric capacity, the 4th pin of described the second chip, the positive pole of described voltage stabilizing diode, the 5th pin of described the 3rd chip and the 6th pin, the second end of described loudspeaker, the negative pole of described the 6th electric capacity, the 3rd pin of described four-core sheet, the 4th pin of the negative pole of described the 7th electric capacity and described buck rectifier is connected, the emitter of described the second triode connects the base stage of described the 3rd triode, the collector while of described the second triode and the collector of described the 3rd triode, the second end of described the 3rd resistance is connected with the second pin of described the first chip, the second end of described the second resistance is connected with the first end of described the 4th resistance and the first pin of described the first chip simultaneously, the second end of described the 4th resistance is connected with the positive pole of the 5th pin and described the first electric capacity with the 6th pin of described the first chip simultaneously, the 7th pin of described the first chip connects the first end of described the second electric capacity, the 4th pin of described the first chip connects the first end of described the 5th resistance, the second end of described the 5th resistance connects the first pin of described the second chip, the second pin of described the second chip connects the first end of described the 6th resistance, the second end while of described the 6th resistance and the 3rd pin of described the second chip, the second end of described the 7th resistance and the negative pole of described voltage stabilizing diode are connected, the 5th pin of described the second chip connects the first end of described the 3rd electric capacity, the second end of described the 3rd electric capacity connects the first pin of described the 3rd chip, the 3rd pin of described the 3rd chip is connected with the second end with the first end of described the 4th electric capacity respectively with the 4th pin, the 7th pin of described the 3rd chip connects the first end of described the 5th electric capacity, the second end of described the 5th electric capacity connects the first end of described loudspeaker, the second pin of described four-core sheet is connected with the positive pole of described the 7th electric capacity and the 3rd pin of described buck rectifier simultaneously, the first pin of described buck rectifier is connected with the first end of described NTC thermistor with the first end of described the 8th electric capacity simultaneously, the second end of described the 8th electric capacity is connected with cathode voltage input end with the second end of described NTC thermistor simultaneously, the second pin of described buck rectifier connects cathode voltage input end.
2. a kind of device of overheating of electrical warning circuit according to claim 1, it is characterized in that: described the first chip is the integrated chip of model NE555, the simulation sounding integrated chip that described the second chip is model TM-801A, described the 3rd chip is the audio frequency amplification chip of model LM-386, the three-terminal voltage-stabilizing integrated chip that described four-core sheet is model 7806.
3. a kind of device of overheating of electrical warning circuit according to claim 1, is characterized in that: described the first electric capacity, described the 6th electric capacity, described the 7th electric capacity have been polar capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320639358.XU CN203502121U (en) | 2013-10-16 | 2013-10-16 | Electrical equipment overheat alarm circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320639358.XU CN203502121U (en) | 2013-10-16 | 2013-10-16 | Electrical equipment overheat alarm circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203502121U true CN203502121U (en) | 2014-03-26 |
Family
ID=50333092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320639358.XU Expired - Fee Related CN203502121U (en) | 2013-10-16 | 2013-10-16 | Electrical equipment overheat alarm circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203502121U (en) |
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2013
- 2013-10-16 CN CN201320639358.XU patent/CN203502121U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20141016 |
|
| EXPY | Termination of patent right or utility model |