CN2218976Y - Alarm inserting part for fuse break - Google Patents
Alarm inserting part for fuse break Download PDFInfo
- Publication number
- CN2218976Y CN2218976Y CN 95207941 CN95207941U CN2218976Y CN 2218976 Y CN2218976 Y CN 2218976Y CN 95207941 CN95207941 CN 95207941 CN 95207941 U CN95207941 U CN 95207941U CN 2218976 Y CN2218976 Y CN 2218976Y
- Authority
- CN
- China
- Prior art keywords
- utility
- model
- fuse
- contact heads
- convenient
- 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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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to an alarm inserting part for fuse breaks, which comprises a casing, two inserting contact heads, and a fuse, wherein, the fuse is connected between the two inserting contact heads. The utility model is characterized in that a light emitting diode is connected with the two inserting contact heads by a bridge rectifier circuit and resistors R1 and R2. The utility model has the advantages that the wirings of original equipment do not need changing because the system design of the utility model is in the form of inserting, and the utility model is a special design for the systems of railways; the utility model can be applied to the alternating current-direct current hoops with 12V to 380V of the railways, and the use and the maintenance are convenient and fast. So the utility model can ensure the safety of railway signals, the failures can be reduced, and the utility model is convenient for finding and eliminating the failures.
Description
The utility model relates to a kind of fuse blows warning plug-in unit, and it is applicable to all AC and DC circuit.
At present, the circuit fuse alarm of public use, public offering is of a great variety, and performance is different, and is each has something to recommend him.
The purpose of this utility model also is a kind of fuse blows warning plug-in unit of invention, this warning dongle configuration advantages of simple, and it is directly perceived, safe, practical, reliable, convenient rapidly to report to the police.
The purpose of this utility model realizes by following measure: this fuse blows warning plug-in unit comprises housing, two webge contacts and the fuse that is connected between two webge contacts is formed, and wherein: LED is connected with two webge contacts with resistance R 1, R2 by bridge rectifier.
Advantage of the present utility model is: because this product is an inserting mode in system design, and be that the railway system is designed specially, need not to change the original equipment distribution, in railway signal alternating current-direct current 12V～380V loop, use easy to maintenance quick.Therefore, can guarantee railway signal safety, can reduce fault, and be convenient to searching rapidly and get rid of of fault.
The drawing of accompanying drawing is described as follows:
Fig. 1 is a circuit diagram of the present utility model.
Fig. 2 is a shape assumption diagram of the present utility model.
Fig. 3 is the vertical view of Fig. 2.
The utility model is explained in detail below in conjunction with accompanying drawing:
As shown in Figure 1 and Figure 2: this fuse blows warning plug-in unit comprises housing (1), two webge contacts (2) and the fuse RD that is connected between two webge contacts forms, wherein: LED is connected with two webge contacts with resistance R 1, R2 by bridge rectifier, and the resistance of resistance can specifically be selected according to the circuit voltage that is suitable for.
The utility model operation principle is: the insertion of this plug-in unit is connected in the circuit loop of load (3), when the circuit operate as normal, fuse is normal, its both end voltage ≈ zero, and R1=R2, by LED, bridge rectifier, electric current in the warning circuit that R1R2 forms is zero, diode (LED) does not work, expression entire circuit loop is normal, when fuse blows or loose contact, the pressure drop of RD two ends is supply voltage (12V～380V equates with the pressure drop of connecing voltage), electric current in the warning circuit is by the positive source → R1 → bridge rectifier of flowing through → LED → bridge rectifier → R2 → power cathode at this moment, according to supply voltage value, adjust the R1=R2 resistance value, make that electric current is 1.5 ± 0.5mA in the loop, this moment, LED was bright, provided the fuse fault alarm and represented.
Claims (1)
1, the utility model relates to a kind of fuse blows warning plug-in unit, it comprises housing (1), two webge contacts (2) and the fuse RD that is connected between two webge contacts forms, and it is characterized in that: LED is connected with two webge contacts with resistance R 1, R2 by bridge rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95207941 CN2218976Y (en) | 1995-04-11 | 1995-04-11 | Alarm inserting part for fuse break |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95207941 CN2218976Y (en) | 1995-04-11 | 1995-04-11 | Alarm inserting part for fuse break |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2218976Y true CN2218976Y (en) | 1996-01-31 |
Family
ID=33859415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95207941 Expired - Fee Related CN2218976Y (en) | 1995-04-11 | 1995-04-11 | Alarm inserting part for fuse break |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2218976Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175943A (en) * | 2011-02-12 | 2011-09-07 | 中兴通讯股份有限公司 | Load overcurrent protector state detection device and method |
-
1995
- 1995-04-11 CN CN 95207941 patent/CN2218976Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175943A (en) * | 2011-02-12 | 2011-09-07 | 中兴通讯股份有限公司 | Load overcurrent protector state detection device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |