CN206114824U - Low -cost fuse supervisory circuits - Google Patents
Low -cost fuse supervisory circuits Download PDFInfo
- Publication number
- CN206114824U CN206114824U CN201620882947.4U CN201620882947U CN206114824U CN 206114824 U CN206114824 U CN 206114824U CN 201620882947 U CN201620882947 U CN 201620882947U CN 206114824 U CN206114824 U CN 206114824U
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- CN
- China
- Prior art keywords
- fuse
- relay
- resistance
- diode
- audion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a low -cost fuse supervisory circuits, including fuse FU, triode VT1, relay J, diode D1, emitting diode LED1, the fuse FU one end VCC that connects respectively, the relay J that contacts 1 with triode VT1 collecting electrode, the fuse FU other end is connecting resistance R1 and output vo respectively, it is anodal that diode D1 is connected to the resistance R1 other end, diode D1 negative pole is connecting resistance R2 and triode VT1 base respectively, emitting diode LED1 negative pole and emitting diode LED2 negative pole are connected respectively to the resistance R2 other end, the anodal relay J coil of connecting of emitting diode LED1. The utility model discloses can adopt different LED indicating fuse's state to remind the operating repair personnel, help operating repair personnel reduce the fault detection scope, and circuit structure is simple, and the function is stable, and is small, is fit for using on various power equipment.
Description
Technical field
This utility model is related to a kind of supervisory circuit, specifically a kind of inexpensive fuse supervisory circuit.
Background technology
As circuit safety protection fuse because it is cheap, using it is simple, applied widely the characteristics of and it is extensive
Using, once but have blown fuse you must try every possible means to find and change them, if there is a circuit to monitor insurance
The operating mode of silk, after blown fuse, can send prompting, find problem with helping user or maintainer quicklook former
Cause, particularly some by ceramics etc material make real core fastp-acting fuse or insurance resistance, they be cannot by check
Whether outward appearance is already off to judge fuse, and fuse blows supervisory circuit just more seems and is necessary.
Utility model content
The purpose of this utility model is to provide a kind of inexpensive fuse supervisory circuit, to solve above-mentioned background technology in
The problem of proposition.
For achieving the above object, this utility model provides following technical scheme：
A kind of inexpensive fuse supervisory circuit, including it is fuse FU, audion VT1, relay J, diode D1, luminous
Diode (LED) 1, described fuse FU one end connects respectively power supply VCC, relay J contact J-1 and audion VT1 colelctor electrodes, melts
The disconnected device FU other ends connect respectively resistance R1 and output end vo, and resistance R1 other ends connection diode D1 positive poles, diode D1 bears
Pole connects respectively resistance R2 and audion VT1 base stages, and the resistance R2 other ends are distinguished connecting luminous diode LED1 negative poles and lighted
The negative pole of diode (LED) 2, the positive pole of LED 1 connection relay J coils, relay J coil other end connecting triodes
VT1 emitter stages, the positive pole of the LED 2 connection relay J contacts J-1 other ends.
As further program of the utility model：The relay J contacts J-1 is normally-closed contact.
As this utility model further scheme：The power supply VCC voltages are 9V.
Compared with prior art, the beneficial effects of the utility model are：This utility model can adopt different LED to indicate
The state of fuse, to remind Maintenance and Repair personnel, helps Maintenance and Repair personnel to reduce fault detect scope, circuit structure letter
Single, function-stable, small volume is adapted for use with various power equipments.
Description of the drawings
Fig. 1 is the circuit diagram of inexpensive fuse supervisory circuit.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
Refer to Fig. 1, in this utility model embodiment, a kind of inexpensive fuse supervisory circuit, including fuse FU, three
Pole pipe VT1, relay J, diode D1, LED 1, described fuse FU one end connects respectively power supply VCC, relay
Device J contact J-1 and audion VT1 colelctor electrodes, the fuse FU other ends connect respectively resistance R1 and output end vo, and resistance R1 is another
End connection diode D1 positive poles, diode D1 negative poles connect respectively resistance R2 and audion VT1 base stages, resistance R2 other ends difference
Connecting luminous diode LED1 negative poles and the negative pole of LED 2, the positive pole of LED 1 connection relay J coils,
Relay J coil other end connecting triode VT1 emitter stages, the positive pole of the LED 2 connection relay J contact J-1
The other end；The relay J contacts J-1 is normally-closed contact；The power supply VCC voltages are 9V.
Operation principle of the present utility model is：Refer to Fig. 1, when fuse FU is normal, audion VT1 by resistance R1,
Diode D1 and resistance R2 obtains 1 point of forward bias, audion VT1 conductings, relay J coils adhesive and LED
Bright, indicating fuse FU is normal, and relay J normally-closed contacts J-1 disconnects, and LED 2 does not light；Once fuse FU
Fusing, audion VT1 base stages cannot obtain conducting voltage, audion VT1 cut-offs, relay J coil losing electricities, light emitting diode
LED1 extinguishes, now relay J normally-closed contacts J-1 closures, and LED 2 lights, indicating fuse FU fusing.
In sum, this utility model can adopt the state of different LED indicating fuses, to remind Maintenance and Repair people
Member, helps Maintenance and Repair personnel to reduce fault detect scope, and circuit structure is simple, function-stable, small volume, is adapted for use with each
Plant on power equipment.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can in other specific forms realize that this practicality is new
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type is by claims rather than described above is limited, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in this utility model.Any reference in claim should not be considered as restriction
Involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of description is only that for clarity those skilled in the art should
Using description as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, form those skilled in the art
Understandable other embodiment.
Claims (3)
1. a kind of inexpensive fuse supervisory circuit, including fuse FU, audion VT1, relay J, diode D1, luminous two
Pole pipe LED1, it is characterised in that described fuse FU one end connects respectively power supply VCC, relay J contact J-1 and audion VT1
Colelctor electrode, the fuse FU other ends connect respectively resistance R1 and output end vo, resistance R1 other ends connection diode D1 positive poles, and two
Pole pipe D1 negative pole connects respectively resistance R2 and audion VT1 base stages, and resistance R2 other ends difference connecting luminous diode LED1 bears
Pole and the negative pole of LED 2, the positive pole of LED 1 connection relay J coils, the relay J coils other end connects
Connect audion VT1 emitter stages, the positive pole of the LED 2 connection relay J contacts J-1 other ends.
2. inexpensive fuse supervisory circuit according to claim 1, it is characterised in that the relay J contacts J-1 is
Normally-closed contact.
3. inexpensive fuse supervisory circuit according to claim 1, it is characterised in that the power supply VCC voltages are 9V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620882947.4U CN206114824U (en) | 2016-08-15 | 2016-08-15 | Low -cost fuse supervisory circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620882947.4U CN206114824U (en) | 2016-08-15 | 2016-08-15 | Low -cost fuse supervisory circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206114824U true CN206114824U (en) | 2017-04-19 |
Family
ID=58512590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620882947.4U Expired - Fee Related CN206114824U (en) | 2016-08-15 | 2016-08-15 | Low -cost fuse supervisory circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206114824U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208584A (en) * | 2019-07-10 | 2019-09-06 | 天津电力机车有限公司 | A kind of locomotive high-voltage voltage transformer fuse assembly of high stability |
| CN110635557A (en) * | 2019-09-03 | 2019-12-31 | 科华恒盛股份有限公司 | Uninterruptible power supply and fuse fault detection method thereof |
-
2016
- 2016-08-15 CN CN201620882947.4U patent/CN206114824U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208584A (en) * | 2019-07-10 | 2019-09-06 | 天津电力机车有限公司 | A kind of locomotive high-voltage voltage transformer fuse assembly of high stability |
| CN110635557A (en) * | 2019-09-03 | 2019-12-31 | 科华恒盛股份有限公司 | Uninterruptible power supply and fuse fault detection method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20170815 |