CN202444237U - Short-circuit self-resetting module - Google Patents
Short-circuit self-resetting module Download PDFInfo
- Publication number
- CN202444237U CN202444237U CN2012200464869U CN201220046486U CN202444237U CN 202444237 U CN202444237 U CN 202444237U CN 2012200464869 U CN2012200464869 U CN 2012200464869U CN 201220046486 U CN201220046486 U CN 201220046486U CN 202444237 U CN202444237 U CN 202444237U
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- circuit
- comparator
- short
- resetting module
- load
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- Expired - Fee Related
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Abstract
The utility model belongs to the technical field of electronics, in particularly relates to a short-circuit self-resetting module, which comprises a current signal acquiring circuit, a drive circuit and an alarm circuit, wherein an output signal of the current signal acquiring circuit is transmitted to a voltage comparator circuit through a signal amplifying circuit, an output signal of the voltage comparator circuit is sent to the drive circuit and the alarm circuit; when a load is in a short-circuit state, the short-circuit self-resetting module sends alarm sound after the signal acquired through the current signal acquiring circuit is amplified, and meanwhile a power supply of the load is switched off, the safety of a load circuit is ensured; when the fault of the load circuit is relieved, the load circuit recovers a power supply, and the short-circuit self-resetting module is economical and practical, and has a fault prompting function; and laypeople can check faults.
Description
Technical field
The utility model belongs to electronic technology field, particularly be a kind of short circuit from resetting module.
Background technology
The most insurance fuse that adopts of electronic circuit is as circuit protection device, also have some to do oneself protection that resets of circuit with fast quick-recovery pipe, but it is installed on product inside, must could judge through the professional.
The utility model content
The purpose of the utility model is to overcome above-mentioned deficiency, provides a kind of short circuit from resetting module.
The utility model solves the technical scheme that its technical problem adopted: a kind of short circuit is from resetting module; Comprise current signal Acquisition Circuit, drive circuit and warning circuit; The output signal of said current signal Acquisition Circuit transfers to voltage comparator circuit through signal amplification circuit, and the output signal of voltage comparator circuit is sent to drive circuit and warning circuit.
Said current signal Acquisition Circuit is gathered the current signal of load circuit by current transformer L.
Resistance R 6, R7 that said signal amplification circuit presses comparator IC1/A and input thereof to connect by LM339 four, the rectifier diode VD1 that its output connects constitutes.
Said voltage comparator circuit comprises the adjustable potentiometer RP that LM339 four presses comparator IC1/B, LM339 four to press comparator IC1/B input to connect; Said LM339 four presses comparator IC1/B output to be connected to the input that LM339 four presses comparator IC1/C through VD2, and said LM339 four presses another input of comparator IC1/C to be connected with clamp diode VD3.
Said drive circuit comprises controllable silicon VS, relay K and the LED that driving tube Q1, driving tube Q1 collector output connect.
Through adopting above-mentioned technical scheme, the beneficial effect of the utility model is: when load is in short circuit, after this module is amplified through current signal Acquisition Circuit acquired signal; Send alarm sound, cut off load power source simultaneously, the proof load circuit safety; After the load circuit trouble shooting; Circuit restores electricity, and this module economics is practical, the fault prompt facility, and the layman also can search fault.
Description of drawings
Fig. 1 is the structured flowchart of the utility model;
Fig. 2 is the circuit theory diagrams of the utility model.
Embodiment
Like Fig. 1, shown in Figure 2; A kind of short circuit of the utility model is from resetting module; Comprise current signal Acquisition Circuit 1, drive circuit 4 and warning circuit 5; The output signal of said current signal Acquisition Circuit 1 transfers to voltage comparator circuit 3 through signal amplification circuit 2, and the output signal of voltage comparator circuit 3 is sent to drive circuit 4 and warning circuit 5.
Said current signal Acquisition Circuit 1 is gathered the current signal of load circuit by current transformer L; Resistance R 6, R7 that signal amplification circuit 2 presses comparator IC1/A and input thereof to connect by LM339 four; The rectifier diode VD1 that its output connects constitutes; Voltage comparator circuit 3 comprises the adjustable potentiometer RP that LM339 four presses comparator IC1/B, LM339 four to press comparator IC1/B input to connect; Said LM339 four presses comparator IC1/B output to be connected to the input that LM339 four presses comparator IC1/C through VD2; Said LM339 four presses another input of comparator IC1/C to be connected with clamp diode VD3, is fixed level so that LM339 four presses comparator IC1/C in-phase input end.
When the AC220V voltage that passes current transformer L had electric current to pass through, current transformer L secondary had less current signal, and this signal is after LM339 four presses comparator IC1/A to amplify; Press comparator IC1/B by rectifier diode VD1 rectification output rear feed to LM339 four, potentiometer RP is used for the adjustment doors threshold currents, when input short current surpasses by the RP preset threshold; After the direct current signal of filtering presses comparator IC1/C to amplify by LM339 four, make the output of driving tube Q1 collector electrode be used for controllable silicon VS triggering signal, controllable silicon VS conducting; The relay K adhesive; Make the load outage, LED is lighted simultaneously, representes that the circuit of required insurance has been cut off power supply.Simultaneously, news Chinese percussion instrument DBB get electric send to tick ring alarm sound, short trouble has appearred in prompting load, reaches safety protective circuit.
If after the load circuit fault was got rid of, whether the secondary of current transformer L had output current signal, be low level so that LM339 four presses comparator IC1/C in-phase input end; Q1 is in cut-off state from driving tube, and controllable silicon VS does not have triggering signal simultaneously, and controllable silicon VS is in cut-off state; Relay K is in not attracting state; Make its normal battle transfer normally closed point to,, reach self-alignment monitoring alarm function for load provides working power.
An above-described preferred embodiment that is merely the utility model can not limit the scope that this practicality is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.
Claims (5)
1. a short circuit is from resetting module; It is characterized in that: comprise current signal Acquisition Circuit (1), drive circuit (4) and warning circuit (5); The output signal of said current signal Acquisition Circuit (1) transfers to voltage comparator circuit (3) through signal amplification circuit (2), and the output signal of voltage comparator circuit (3) is sent to drive circuit (4) and warning circuit (5).
2. short circuit according to claim 1 is characterized in that from resetting module: said current signal Acquisition Circuit (1) is gathered the current signal of load circuit by current transformer L.
3. short circuit according to claim 1 is characterized in that from resetting module: resistance R 6, R7 that said signal amplification circuit (2) presses comparator IC1/A and input thereof to connect by LM339 four, the rectifier diode VD1 that its output connects constitutes.
4. short circuit according to claim 1 is from resetting module; It is characterized in that: said voltage comparator circuit (3) comprises the adjustable potentiometer RP that LM339 four presses comparator IC1/B, LM339 four to press comparator IC1/B input to connect; Said LM339 four presses comparator IC1/B output to be connected to the input that LM339 four presses comparator IC1/C through VD2, and said LM339 four presses another input of comparator IC1/C to be connected with clamp diode VD3.
5. short circuit according to claim 1 is characterized in that from resetting module: said drive circuit (4) comprises controllable silicon VS, relay K and the LED that driving tube Q1, driving tube Q1 collector output connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200464869U CN202444237U (en) | 2012-02-14 | 2012-02-14 | Short-circuit self-resetting module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200464869U CN202444237U (en) | 2012-02-14 | 2012-02-14 | Short-circuit self-resetting module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202444237U true CN202444237U (en) | 2012-09-19 |
Family
ID=46825667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200464869U Expired - Fee Related CN202444237U (en) | 2012-02-14 | 2012-02-14 | Short-circuit self-resetting module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202444237U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104318653A (en) * | 2014-10-29 | 2015-01-28 | 成都汉康信息产业有限公司 | Logistics transportation vehicle traffic control and management device |
| CN104484913A (en) * | 2014-10-29 | 2015-04-01 | 成都汉康信息产业有限公司 | Garden gate control device |
| CN104842801A (en) * | 2014-02-18 | 2015-08-19 | 现代自动车株式会社 | Device and method for interrupting battery current |
| CN110473343A (en) * | 2019-09-20 | 2019-11-19 | 正星科技股份有限公司 | Self-service machine and its monitoring method out of stock |
-
2012
- 2012-02-14 CN CN2012200464869U patent/CN202444237U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842801A (en) * | 2014-02-18 | 2015-08-19 | 现代自动车株式会社 | Device and method for interrupting battery current |
| CN104842801B (en) * | 2014-02-18 | 2018-12-28 | 现代自动车株式会社 | Device and method for interrupting battery current |
| CN104318653A (en) * | 2014-10-29 | 2015-01-28 | 成都汉康信息产业有限公司 | Logistics transportation vehicle traffic control and management device |
| CN104484913A (en) * | 2014-10-29 | 2015-04-01 | 成都汉康信息产业有限公司 | Garden gate control device |
| CN110473343A (en) * | 2019-09-20 | 2019-11-19 | 正星科技股份有限公司 | Self-service machine and its monitoring method out of stock |
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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: 20120919 Termination date: 20130214 |