CN202997925U - Electronic safety device provided with automatic recovery function - Google Patents
Electronic safety device provided with automatic recovery function Download PDFInfo
- Publication number
- CN202997925U CN202997925U CN 201220467988 CN201220467988U CN202997925U CN 202997925 U CN202997925 U CN 202997925U CN 201220467988 CN201220467988 CN 201220467988 CN 201220467988 U CN201220467988 U CN 201220467988U CN 202997925 U CN202997925 U CN 202997925U
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- distribution controller
- power distribution
- safety device
- emitting diode
- power supply
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Abstract
The utility model discloses an electronic safety device provided with an automatic recovery function comprising a DC power supply, a power supply distribution controller, a first light emitting diode, a second light emitting diode, a first capacitor, a second capacitor, a first resistor, a second resistor, and a switch. When the load overcurrent or the short circuit of an electric device occurs, the power supply distribution controller can be switched into a constant current output mode automatically, and at the same time, an overcurrent logic output end can be used to output a low level, and the second light emitting rod illuminates. The power distribution controller can recover the normal function until the fault is eliminated. The electronic safety device provided in the utility model has a simple circuit structure, and can be used repeatedly. The utility model is advantageous in that the problem of the frequent fusing during the maintenance of the fault related to the power supply can be solved; the electronic safety device can be widely used in charger circuits of various mobile devices; and by using the electronic safety device, appropriate parameters can be chosen to replace the fuses during the designing, the trial-manufacturing of new electronic circuits.
Description
Technical field
The utility model relates to a kind of safeties, relates in particular to a kind of electronic security with auto restore facility.
Background technology
Safeties are the essential elements of household appliances, electronic instrument and industrial equipment, play the effect of load overcurrent fuse protection.But currently used this fuse can only use once, must change after damage, not only bothers, and has increased cost.
Summary of the invention
The purpose of this utility model provides a kind of automatic recovery electrical fuse with soft start function 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 DC power supply, the power distribution controller, the first light-emitting diode, the second light-emitting diode, the first electric capacity, the second electric capacity, the first resistance, the second resistance and switch, first end while and the described dc power anode of described the first resistance, the first end of described the first electric capacity, the first end of described the second resistance, the first voltage input end of described power distribution controller is connected with the second voltage input, and the second end of described the first resistance is connected with the positive pole of described the first light-emitting diode, the negative pole while of described the first light-emitting diode and the second end of described the first electric capacity, one end of described switch, the negative input of described power distribution controller be connected the first end of the second electric capacity and connect, the other end of described switch is connected with the logic-enabled control end of described power distribution controller, the second end of described the second resistance is connected with the positive pole of described the second light-emitting diode, the negative pole of described the second light-emitting diode is connected with the overcurrent logic output terminal of described power distribution controller, the first output of described power distribution controller, the second output of described power distribution controller be connected the 3rd output of power distribution controller and all be connected with the second end of described the second electric capacity, the two ends of described the second electric capacity are the load wiring end.
The beneficial effects of the utility model are:
The utility model is a kind of electronic security, and circuit structure is simple, and is reusable.The utility model not only can be removed the worry of burning repeatly insurance fully when keeping in repair the fault relevant with power supply, also can be widely used in the charger circuit of various mobile devices, in design, when manufacturing experimently new electronic circuit or device, can select suitable parameter to replace fuse.
Description of drawings
Accompanying drawing 1 is circuit structure schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing 1:
as shown in Figure 1: the utility model comprises DC power supply, the power distribution controller IC, the first LED 1, the second LED 2, the first capacitor C 1, the second capacitor C 2, the first resistance R 1, the second resistance R 2 and switch S B, first end while and the dc power anode of the first resistance R 1, the first end of the first capacitor C 1, the first end of the second resistance R 2, the first voltage input end IN1 of power distribution controller IC is connected with second voltage input IN2, and the second end of the first resistance R 1 is connected with the positive pole of the first LED 1, the negative pole while of the first LED 1 and the second end of the first capacitor C 1, the end of switch S B, the negative input of power distribution controller IC be connected the first end of capacitor C 2 and connect, the other end of switch S B is connected with the logic-enabled control end EN of power distribution controller IC, the second end of the second resistance R 2 is connected with the positive pole of the second LED 2, the negative pole of the second light-emitting diodes LED2 is connected with the overcurrent logic output terminal DC of power distribution controller IC, the first output OUT1 of power distribution controller IC, the second output OUT2 of power distribution controller IC is connected the 3rd output OUT3 and all is connected with the second end of the second capacitor C 2 with the power distribution controller IC, the two ends of the second capacitor C 2 are the load wiring end.
As shown in Figure 1: the power distribution controller IC is the N-channel MOS FET type power distribution switch that TIX releases.It adopts 8 pin DIP dual in-line package, and each pin function is as follows, and the GND end is negative input; IN1 and IN2 are voltage input ends, and input voltage range is VIN=0.3～7V; The EN end is logic-enabled control end, switch conduction during EN=0; The DC end is the overcurrent logic output terminal, and lower DC=0 nonserviceables; OUT1, OUT2 and OUT3 are voltage output end, VOUT=0.3-(VIN+0.3) V.When electrical appliance load RL overcurrent or short circuit, the power distribution controller IC automatically switches into the constant current output mode, the saltus step of the overcurrent logic output terminal DC of power distribution controller IC output simultaneously is low level, faulty indication pipe the second LED 2 ignites, until after the fault eliminating, the power distribution controller IC just recovers normal function.Should and connect the first voltage input end IN1 and second voltage input IN2 during use, make power distribution controller IC pressure drop and least in power-consuming.
Claims (1)
1. electronic security with auto restore facility, it is characterized in that: comprise DC power supply, the power distribution controller, the first light-emitting diode, the second light-emitting diode, the first electric capacity, the second electric capacity, the first resistance, the second resistance and switch, first end while and the described dc power anode of described the first resistance, the first end of described the first electric capacity, the first end of described the second resistance, the first voltage input end of described power distribution controller is connected with the second voltage input, the second end of described the first resistance is connected with the positive pole of described the first light-emitting diode, the negative pole while of described the first light-emitting diode and the second end of described the first electric capacity, one end of described switch, the negative input of described power distribution controller be connected the first end of the second electric capacity and connect, the other end of described switch is connected with the logic-enabled control end of described power distribution controller, the second end of described the second resistance is connected with the positive pole of described the second light-emitting diode, the negative pole of described the second light-emitting diode is connected with the overcurrent logic output terminal of described power distribution controller, the first output of described power distribution controller, the second output of described power distribution controller be connected the 3rd output of power distribution controller and all be connected with the second end of described the second electric capacity, the two ends of described the second electric capacity are the load wiring end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220467988 CN202997925U (en) | 2012-09-14 | 2012-09-14 | Electronic safety device provided with automatic recovery function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220467988 CN202997925U (en) | 2012-09-14 | 2012-09-14 | Electronic safety device provided with automatic recovery function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202997925U true CN202997925U (en) | 2013-06-12 |
Family
ID=48569051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220467988 Expired - Fee Related CN202997925U (en) | 2012-09-14 | 2012-09-14 | Electronic safety device provided with automatic recovery function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202997925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052037A (en) * | 2013-03-15 | 2014-09-17 | 成都瑞途电子有限公司 | Electronic fuse apparatus based on power distribution controller |
-
2012
- 2012-09-14 CN CN 201220467988 patent/CN202997925U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052037A (en) * | 2013-03-15 | 2014-09-17 | 成都瑞途电子有限公司 | Electronic fuse apparatus based on power distribution controller |
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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: 20130612 Termination date: 20130914 |