CN201408975Y - Fuse burnout warning circuit and television with fuse burnout warning function - Google Patents
Fuse burnout warning circuit and television with fuse burnout warning function Download PDFInfo
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- CN201408975Y CN201408975Y CN2009201313686U CN200920131368U CN201408975Y CN 201408975 Y CN201408975 Y CN 201408975Y CN 2009201313686 U CN2009201313686 U CN 2009201313686U CN 200920131368 U CN200920131368 U CN 200920131368U CN 201408975 Y CN201408975 Y CN 201408975Y
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- 230000003287 optical effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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Abstract
The utility model relates to a fuse burnout warning circuit and a television with fuse burnout warning function, wherein, the fuse burnout warning circuit comprises a power supply, and a fuse electrically connected with the power supply, as well as a voltage adjustment circuit, a warning drive circuit and a warning circuit connected in sequence with the power supply, and the fuse is arranged inside the warning drive circuit. When fuse burnout occurs as a result of load overcurrent, the utility model generates an alarming sound for informing users of the failure location with the absence of detecting instruments. Moreover, the utility model has the advantages of simple circuit and low cost.
Description
Technical field
The utility model relates to a kind of warning circuit, more particularly, relates to a kind of blown fuse warning circuit and has the television set of this warning function.
Background technology
Fuse is as a kind of overcurrent protective device, and it is used for widely preventing that circuit from damaging.All can be applied to fuse in a large amount of electrical equipment, fuse terminal is commonly used to form to be electrically connected at circuit element or the elements combination that is arranged in the circuit.When the electric current through fuse surpassed a preset limit, blown fuse was with open circuit protective circuit element.
Yet, when blown fuse will be carried out maintenance and inspection to circuit, and when not having detecting instrument, be difficult to judge the abort situation of blown fuse.For example, because workman's misoperation on the production line causes blown fuse easily, do not having under the situation of detecting instrument, the workman is difficult to the judgement abort situation, and can influence carrying out smoothly of production.
The utility model content
The technical problems to be solved in the utility model is, be difficult to judge the defective of abort situation at the above-mentioned blown fuse of prior art and when not having detecting instrument, a kind of blown fuse warning circuit that can just can determine the blown fuse position without detecting instrument is provided.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of blown fuse warning circuit, it comprises power supply, reaches the fuse that is electrically connected mutually with power supply, also comprise the voltage-regulating circuit that links to each other with power supply successively, warning drive circuit, and warning circuit, and described fuse is arranged in the described warning drive circuit.
In blown fuse warning circuit described in the utility model, described voltage-regulating circuit comprises voltage adjuster.
In blown fuse warning circuit described in the utility model, described warning drive circuit comprises triode Q305, fuse F803, diode VD106, light-emitting diode VD107, reaches resistance R 845, R846;
Wherein, the negative electrode of the base stage sending and receiving optical diode VD107 of triode Q305, its collector electrode links to each other with described warning circuit, its emitter is by resistance R 406 ground connection, the anode of light-emitting diode VD107 connects the output of described voltage-regulating circuit by resistance R 845, the anode of light-emitting diode VD107 links to each other with the anode of diode VD106 simultaneously, and the negative electrode of diode VD106 is by fuse F803 ground connection.
In blown fuse warning circuit described in the utility model, described triode Q305 is the NPN type.
In blown fuse warning circuit described in the utility model, described warning circuit is connected between the output and warning drive circuit of described voltage-regulating circuit.
In blown fuse warning circuit described in the utility model, described warning circuit is buzzer or loudspeaker.
In order to solve the problems of the technologies described above, the utility model also provides a kind of television set with blown fuse warning function, it comprises TV motherboard and the blown fuse warning circuit that links to each other with TV motherboard, described blown fuse warning circuit comprises power supply, reaches the fuse that is electrically connected mutually with power supply, also comprise the voltage-regulating circuit that links to each other with power supply successively, warning drive circuit, and warning circuit, and described fuse is arranged in the described warning drive circuit.
Implement blown fuse warning circuit of the present utility model, have following beneficial effect: when the load overcurrent caused blown fuse, it can drive the warning circuit warning of sounding, thereby is not having to learn the guilty culprit position under the detecting instrument situation rapidly, and circuit is simple, and cost is low.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the circuit diagram to the TV motherboard power supply that includes fuse in the prior art;
Fig. 2 is the circuit block diagram of the utility model blown fuse warning circuit;
Fig. 3 is the circuit diagram of the utility model blown fuse warning circuit one embodiment;
Fig. 4 is the circuit diagram that the utility model blown fuse warning circuit is applied to the embodiment on the television set.
Embodiment
Referring to Fig. 2 and Fig. 3, Fig. 2 is the circuit block diagram of the utility model blown fuse warning circuit; Fig. 3 is the circuit diagram of blown fuse warning circuit one embodiment.The voltage-regulating circuit 2 that the blown fuse warning circuit that the utility model provides comprises power supply 1, link to each other with power supply successively, warning drive circuit 3, and warning circuit 4, fuse is arranged in the described warning drive circuit 3.Power supply is powered to entire circuit, and voltage-regulating circuit is converted to the needed driving voltage of alarm element in the warning circuit 4 with supply voltage, and the driving warning circuit 3 that includes fuse makes warning circuit 4 drive when blown fuse and reports to the police.Warning circuit is reported to the police by sound, can just learn the blown fuse position without detecting instrument like this, and therefore blown fuse, also can learn the load faulty position normally because the load faulty of back causes overcurrent.
In preferred embodiment shown in Figure 3, its direct current by 12V is powered to entire circuit.Voltage-regulating circuit 2 adopts the LDO voltage adjuster, and it can be a 5V voltage with the 12V voltage transitions.The pin 3 of voltage adjuster connects power supply, its output, i.e. pin 2 circuit taking alarm.Warning circuit 4 is buzzer or loudspeaker, in Fig. 3, employing be buzzer, it needs the driving voltage of 5V.Warning drive circuit 3 comprises triode Q305, fuse F803, diode VD106, light-emitting diode VD107, reaches resistance R 845, R846.The negative electrode of the base stage sending and receiving optical diode VD107 of triode Q305, its collector electrode links to each other with buzzer, its emitter is by resistance R 406 ground connection, the anode of light-emitting diode VD107 connects the output of described voltage-regulating circuit by resistance R 845, the anode of light-emitting diode VD107 links to each other with the anode of diode VD106 simultaneously, and the negative electrode of diode VD106 is by fuse F803 ground connection.Simultaneously, the negative electrode of diode VD106 links to each other with load.
The utility model also provides a kind of television set with blown fuse warning function.Referring to Fig. 1, Fig. 1 is the circuit diagram to TV motherboard power supply that includes fuse, and its power supply is directly by behind the fuse, passes through powering load after the step-down again, when not having detecting instrument and can't learn abort situation.Directly Fig. 4 is the circuit diagram that the utility model blown fuse warning circuit is applied to the embodiment on the television set.It comprises above-mentioned the blown fuse warning circuit and the load of mutual electrical connection, and load herein is TV motherboard IC, and power supply carries out the step-down conversion of DC-to-DC by AOZ1010 simultaneously, thereby the voltage of 5V is provided to load.
When the circuit operate as normal, diode VD106 conducting, triode Q305 ends, and buzzer is in resting state; When load owing to overload or during other reason overcurrent, cause F803 to burn, then diode VD106 ends, light-emitting diode VD107 conducting, the Q305 conducting, buzzer activates and the warning of sounding, it can point out workmen's insurance's silk to burn, and can learn abort situation.And when breaking down, the light-emitting diode conducting also can luminously be carried out light alarm.
In sum, the blown fuse warning circuit that the utility model provides can be reported to the police by voice signal and light signal when blown fuse, and it for example helps that the workman learns abort situation rapidly.And this blown fuse warning circuit is simple, and cost is low.
Claims (10)
1, a kind of blown fuse warning circuit, comprise power supply, reach the fuse that is electrically connected mutually with power supply, it is characterized in that, also comprise the voltage-regulating circuit that links to each other with power supply successively, warning drive circuit, and warning circuit, and described fuse is arranged in the described warning drive circuit.
2, blown fuse warning circuit according to claim 1 is characterized in that, described voltage-regulating circuit comprises voltage adjuster.
3, blown fuse warning circuit according to claim 1 is characterized in that, described warning drive circuit comprises triode Q305, fuse F803, diode VD106, light-emitting diode VD107, reaches resistance R 845, R846;
Wherein, the negative electrode of the base stage sending and receiving optical diode VD107 of triode Q305, its collector electrode links to each other with described warning circuit, its emitter is by resistance R 406 ground connection, the anode of light-emitting diode VD107 connects the output of described voltage-regulating circuit by resistance R 845, the anode of light-emitting diode VD107 links to each other with the anode of diode VD106 simultaneously, and the negative electrode of diode VD106 is by fuse F803 ground connection.
4, blown fuse warning circuit according to claim 3 is characterized in that, described triode Q305 is the NPN type.
5, blown fuse warning circuit according to claim 1 is characterized in that, described warning circuit is connected between the output and warning drive circuit of described voltage-regulating circuit.
6, blown fuse warning circuit according to claim 1 or 5 is characterized in that described warning circuit is buzzer or loudspeaker.
7, a kind of television set with blown fuse warning function, comprise TV motherboard and the blown fuse warning circuit that links to each other with TV motherboard, it is characterized in that, described blown fuse warning circuit comprises power supply, reaches the fuse that is electrically connected mutually with power supply, also comprise the voltage-regulating circuit that links to each other with power supply successively, warning drive circuit, and warning circuit, and described fuse is arranged in the described warning drive circuit.
8, television set according to claim 7 is characterized in that, described voltage-regulating circuit comprises voltage adjuster.
9, television set according to claim 7 is characterized in that, described warning drive circuit comprises triode Q305, fuse F803, diode VD106, light-emitting diode VD107, reaches resistance R 845, R846;
Wherein, the negative electrode of the base stage sending and receiving optical diode VD107 of triode Q305, its collector electrode links to each other with described warning circuit, its emitter is by resistance R 406 ground connection, the anode of light-emitting diode VD107 connects the output of described voltage-regulating circuit by resistance R 845, the anode of light-emitting diode VD107 links to each other with the anode of diode VD106 simultaneously, and the negative electrode of diode VD106 is by fuse F803 ground connection.
10, television set according to claim 7 is characterized in that, described warning circuit is buzzer or loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201313686U CN201408975Y (en) | 2009-04-29 | 2009-04-29 | Fuse burnout warning circuit and television with fuse burnout warning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201313686U CN201408975Y (en) | 2009-04-29 | 2009-04-29 | Fuse burnout warning circuit and television with fuse burnout warning function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201408975Y true CN201408975Y (en) | 2010-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201313686U Expired - Fee Related CN201408975Y (en) | 2009-04-29 | 2009-04-29 | Fuse burnout warning circuit and television with fuse burnout warning function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201408975Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103950A (en) * | 2011-02-28 | 2011-06-22 | 朱虹 | Direct current power supply fuse monitoring device with sound-light reminding |
-
2009
- 2009-04-29 CN CN2009201313686U patent/CN201408975Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103950A (en) * | 2011-02-28 | 2011-06-22 | 朱虹 | Direct current power supply fuse monitoring device with sound-light reminding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20130429 |