CN204256101U - Fuse circuit for detecting and there is the charging circuit of this fuse circuit for detecting - Google Patents
Fuse circuit for detecting and there is the charging circuit of this fuse circuit for detecting Download PDFInfo
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- CN204256101U CN204256101U CN201420716199.3U CN201420716199U CN204256101U CN 204256101 U CN204256101 U CN 204256101U CN 201420716199 U CN201420716199 U CN 201420716199U CN 204256101 U CN204256101 U CN 204256101U
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Abstract
The utility model fuse circuit for detecting and there is the charging circuit of this fuse circuit for detecting, relate to a kind of fuse circuit for detecting, comprise signal deteching circuit, signaling conversion circuit and warning circuit, signal deteching circuit comprises Current Transmit 1, signaling conversion circuit comprises resistance R, warning circuit comprises photoelectrical coupler U1, light emitting diode D2, triode Q1, 3rd resistance R3 and dsp chip, the main winding end of CT1 is connected with fuse, auxiliary winding 1 end is connected with 1 pin of U1, 2 ends are connected with 2 pin of U1, resistance R is connected in parallel on the auxiliary winding two ends of CT1, the 3 pin ground connection of U1, 4 pin are connected with the anode of D2, the negative terminal of D2 is connected with the base stage of Q1, the grounded emitter of Q1, collector connects dsp chip, 4 pin of the triode end of U1 are connected to VCC end, R3 one end is connected to VCC end, the other end is connected with the collector of Q1.Whether the utility model can detect fuse and damage, and reminding user is changed in time or keeped in repair.
Description
Technical field
The utility model relates to fuse technical field, particularly relates to a kind of fuse circuit for detecting and has the charging circuit of this fuse circuit for detecting.
Background technology
Charging circuit is as a kind of circuit the most general of electron trade, and be widely used in electronic circuit every field, charging circuit generally all can arrange a fuse, prevents from overcharging, and other electronic applications also can use fuse.But present most fuse is all without circuit for detecting, when fuse damages, cannot discovers, cause fuse to lose effectiveness, and damage circuit devcie, use inconvenience so on the one hand, unnecessary loss may be caused on the other hand.
Utility model content
For solving the problem, the utility model provides a kind of fuse circuit for detecting, and it can detect whether fuse damages, and concurrent bright dipping is reported to the police, and reminding user is changed in time or keeped in repair, and prevents circuit devcie from damaging, and ensures that electronic circuit normally uses.
The utility model also provides a kind of charging circuit with above-mentioned fuse circuit for detecting.
For achieving the above object, the technical scheme that the utility model adopts is: fuse circuit for detecting, it comprises signal deteching circuit, signaling conversion circuit and a warning circuit, described signal deteching circuit comprises Current Transmit 1, described signaling conversion circuit comprises one group of resistance R, described warning circuit comprises photoelectrical coupler U1, light emitting diode D2, triode Q1, 3rd resistance R3 and dsp chip, the main winding end of described Current Transmit 1 is connected with fuse FUSE, auxiliary winding 1 end of described Current Transmit 1 is connected with 1 pin of the diode end of described photoelectrical coupler U1, 2 ends are connected with 2 pin of the diode end of photoelectrical coupler U1, described resistance R is connected in parallel on the auxiliary winding two ends of described Current Transmit 1, 3 pin ground connection of the triode end of described photoelectrical coupler U1, 4 pin are connected with the anode of described light emitting diode D2, the negative terminal of light emitting diode D2 is connected with the base stage of triode Q1, the grounded emitter of described triode Q1, collector connects described dsp chip, 4 pin of the triode end of described photoelectrical coupler U1 are connected to VCC end, described 3rd resistance R3 one end is connected to described VCC and holds, the other end is connected with the collector of described triode Q1.
Preferably, described resistance R comprises the 4th resistance R4 and the 5th resistance R5 that are connected in series.
Being improved to further technique scheme, described fuse circuit for detecting also comprises rectification circuit, described rectification circuit comprises diode D1, and its anode is connected with auxiliary winding 1 end of Current Transmit 1, and negative terminal is connected with 1 pin of the diode end of photoelectrical coupler U1.
Being improved to further technique scheme, described fuse circuit for detecting also comprises filtering circuit, described filtering circuit comprises a filter capacitor C1, described filter capacitor C1 anode is connected with the negative terminal of described diode D1, and negative terminal is connected with auxiliary winding 2 end of described Current Transmit 1 and ground connection.
Being improved to further technique scheme, described fuse circuit for detecting also comprises current-limiting circuit, described current-limiting circuit comprises the first resistance R1, and the input end of described first resistance R1 is connected with the negative terminal of described diode D1, and output terminal is connected with 1 pin of the diode end of photoelectrical coupler U1.
Being improved to further technique scheme, described warning circuit also comprises the second resistance R2, and described second resistance R2 one end is connected with 4 pin of the triode end of described photoelectrical coupler U1, and the other end is connected to VCC end.
Preferably, described Current Transmit 1 is scale-up version current transformer, and its auxiliary winding number of turn is more than main winding.
A kind of charging circuit that the utility model also provides, comprises fuse FUSE, also comprises described fuse circuit for detecting.
Described fuse circuit for detecting, beneficial effect is compared to existing technology:
This fuse circuit for detecting is by gathering the electric current of fuse, make light emitting diode D2 conducting or not conducting, and high level or low level signal are issued dsp chip, judge whether fuse damages, concurrent bright dipping is reported to the police, reminding user is changed in time or is keeped in repair, and prevents circuit devcie from damaging, and ensures that electronic circuit normally uses; This circuit structure is simple, and all use conventional electronic devices and components, testing cost is low.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model embodiment 1 fuse circuit for detecting.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Embodiment 1:
With reference to Fig. 1, fuse circuit for detecting described in the utility model, it comprises signal deteching circuit, signaling conversion circuit and a warning circuit, also comprise rectification circuit, filtering circuit, current-limiting circuit, described signal deteching circuit comprises Current Transmit 1, signaling conversion circuit comprises one group of resistance R, and resistance R is connected in series by the 4th resistance R4 and the 5th resistance R5.Warning circuit comprises photoelectrical coupler U1, light emitting diode D2, triode Q1, the second resistance R2, the 3rd resistance R3 and dsp chip; Rectification circuit comprises diode D1, and filtering circuit comprises a filter capacitor C1, and current-limiting circuit comprises the first resistance R1.Current Transmit 1 is scale-up version current transformer, and its auxiliary winding number of turn is more than main winding.
Wherein, the main winding end of Current Transmit 1 is connected with fuse FUSE, 1 end of auxiliary winding is connected with the anode of diode D1, the negative terminal of diode D1 is connected with the input end of the first resistance R1 for current limliting, the output terminal of the first resistance R1 is connected with 1 pin of the diode end of photoelectrical coupler U1, and 2 ends of the auxiliary winding of Current Transmit 1 are connected with 2 pin of the diode end of photoelectrical coupler U1; 4th resistance R4 is connected in parallel between 1 end of the auxiliary winding of Current Transmit 1 and 2 ends after connecting with the 5th resistance R5, the anode of filter capacitor C1 is connected with the negative terminal of diode D1, and the negative terminal of filter capacitor C1 is connected with 2 ends of the auxiliary winding of Current Transmit 1 and ground connection.3 pin ground connection of the triode end of photoelectrical coupler U1,4 pin are connected with the anode of light emitting diode D2, the negative terminal of light emitting diode D2 is connected with the base stage of triode Q1, the grounded emitter of triode Q1, collector connects dsp chip, 4 pin of the triode end of photoelectrical coupler U1 are by being connected to VCC end after the second resistance R2, the 3rd resistance R3 one end is connected to VCC end, and the other end is connected with the collector of triode Q1.
When fuse is normal, detect that electric current flows through by Current Transmit 1, the four resistance R4 of electric current through connecting after Current Transmit 1 amplifies, be converted to after 5th resistance R5 after voltage signal through diode D1 rectification and filter capacitor C1 filtering, 1 pin of photoelectrical coupler U1 is added to again after the first resistance R1 current limliting, now photoelectrical coupler U1 works, 3 of photoelectrical coupler U1, 4 pin conductings, because of the 3 pin ground connection of photoelectrical coupler U1, therefore 4 pin level are 0V(does not consider PN junction pressure drop), now light emitting diode D2 input end (anode) voltage is 0V, light emitting diode D2 is not luminous, triode Q1 does not work, high level signal is given dsp chip through the 3rd resistance R3 by VCC, when dsp chip detects high level signal, explanation fuse is working properly.
When fuse damages, Current Transmit 1 can't detect electric current, diode D1, filter capacitor C1 does not work, 1,2 pin of photoelectrical coupler U1 not electric, therefore 3 of photoelectrical coupler U1,4 pin not conductings, now VCC is through light emitting diode D2, is added in the base stage of triode Q1, Q1 conducting, light emitting diode D1 is luminous, the collector and emitter conducting of triode Q1, grounded emitter, so the signal now giving DSP is low level, illustrate that now fuse damages, operation irregularity.Staff can keep in repair fuse in time according to above-mentioned detection signal.
Embodiment 2:
The present embodiment provides a kind of charging circuit, and it comprises resistance wire FUSE, also comprises the fuse circuit for detecting described in embodiment 1.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (8)
1. a fuse circuit for detecting, it is characterized in that: comprise signal deteching circuit, signaling conversion circuit and a warning circuit, described signal deteching circuit comprises Current Transmit 1, described signaling conversion circuit comprises one group of resistance R, described warning circuit comprises photoelectrical coupler U1, light emitting diode D2, triode Q1, 3rd resistance R3 and dsp chip, the main winding end of described Current Transmit 1 is connected with fuse FUSE, auxiliary winding 1 end of described Current Transmit 1 is connected with 1 pin of the diode end of described photoelectrical coupler U1, 2 ends are connected with 2 pin of the diode end of photoelectrical coupler U1, described resistance R is connected in parallel on the auxiliary winding two ends of described Current Transmit 1, 3 pin ground connection of the triode end of described photoelectrical coupler U1, 4 pin are connected with the anode of described light emitting diode D2, the negative terminal of light emitting diode D2 is connected with the base stage of triode Q1, the grounded emitter of described triode Q1, collector connects described dsp chip, 4 pin of the triode end of described photoelectrical coupler U1 are connected to VCC end, described 3rd resistance R3 one end is connected to described VCC and holds, the other end is connected with the collector of described triode Q1.
2. fuse circuit for detecting according to claim 1, is characterized in that: described resistance R comprises the 4th resistance R4 and the 5th resistance R5 that are connected in series.
3. fuse circuit for detecting according to claim 1, it is characterized in that: also comprise rectification circuit, described rectification circuit comprises diode D1, and its anode is connected with auxiliary winding 1 end of Current Transmit 1, and negative terminal is connected with 1 pin of the diode end of photoelectrical coupler U1.
4. fuse circuit for detecting according to claim 3, it is characterized in that: also comprise filtering circuit, described filtering circuit comprises a filter capacitor C1, and described filter capacitor C1 anode is connected with the negative terminal of described diode D1, and negative terminal is connected with auxiliary winding 2 end of described Current Transmit 1 and ground connection.
5. fuse circuit for detecting according to claim 3, it is characterized in that: also comprise current-limiting circuit, described current-limiting circuit comprises the first resistance R1, and the input end of described first resistance R1 is connected with the negative terminal of described diode D1, and output terminal is connected with 1 pin of the diode end of photoelectrical coupler U1.
6. fuse circuit for detecting according to claim 1, it is characterized in that: described warning circuit also comprises the second resistance R2, described second resistance R2 one end is connected with 4 pin of the triode end of described photoelectrical coupler U1, and the other end is connected to VCC end.
7. fuse circuit for detecting according to claim 1, is characterized in that: described Current Transmit 1 is scale-up version current transformer, and its auxiliary winding number of turn is more than main winding.
8. a charging circuit, comprises fuse FUSE, it is characterized in that: also comprise the arbitrary described fuse circuit for detecting of claim 1 ~ 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420716199.3U CN204256101U (en) | 2014-11-24 | 2014-11-24 | Fuse circuit for detecting and there is the charging circuit of this fuse circuit for detecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420716199.3U CN204256101U (en) | 2014-11-24 | 2014-11-24 | Fuse circuit for detecting and there is the charging circuit of this fuse circuit for detecting |
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| Publication Number | Publication Date |
|---|---|
| CN204256101U true CN204256101U (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420716199.3U Active CN204256101U (en) | 2014-11-24 | 2014-11-24 | Fuse circuit for detecting and there is the charging circuit of this fuse circuit for detecting |
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| CN (1) | CN204256101U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422222A (en) * | 2017-06-14 | 2017-12-01 | 广州三晶电气股份有限公司 | A kind of photovoltaic DC-to-AC converter judges the circuit for detecting of fuse quality |
| CN109188264A (en) * | 2018-09-27 | 2019-01-11 | 东莞市广荣电子制品有限公司 | A kind of circuit breaker state detecting circuit |
| CN113253161A (en) * | 2021-05-27 | 2021-08-13 | 山东英信计算机技术有限公司 | Circuit structure for measuring and burning PCB fuse |
-
2014
- 2014-11-24 CN CN201420716199.3U patent/CN204256101U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422222A (en) * | 2017-06-14 | 2017-12-01 | 广州三晶电气股份有限公司 | A kind of photovoltaic DC-to-AC converter judges the circuit for detecting of fuse quality |
| CN107422222B (en) * | 2017-06-14 | 2023-03-21 | 广州三晶电气股份有限公司 | Detection circuit for judging whether fuse is good or not by photovoltaic inverter |
| CN109188264A (en) * | 2018-09-27 | 2019-01-11 | 东莞市广荣电子制品有限公司 | A kind of circuit breaker state detecting circuit |
| CN113253161A (en) * | 2021-05-27 | 2021-08-13 | 山东英信计算机技术有限公司 | Circuit structure for measuring and burning PCB fuse |
| CN113253161B (en) * | 2021-05-27 | 2023-02-28 | 山东英信计算机技术有限公司 | Circuit structure for measuring and burning PCB fuse |
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