CN2930064Y - Power cut-off protector for tax control electronic cash register - Google Patents
Power cut-off protector for tax control electronic cash register Download PDFInfo
- Publication number
- CN2930064Y CN2930064Y CN 200620082699 CN200620082699U CN2930064Y CN 2930064 Y CN2930064 Y CN 2930064Y CN 200620082699 CN200620082699 CN 200620082699 CN 200620082699 U CN200620082699 U CN 200620082699U CN 2930064 Y CN2930064 Y CN 2930064Y
- Authority
- CN
- China
- Prior art keywords
- power
- capacitor
- resistance
- pin
- integrated circuit
- 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
Links
- 230000001012 protector Effects 0.000 title 1
- 239000003990 capacitor Substances 0.000 claims abstract description 30
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 3
- 230000005611 electricity Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Cash Registers Or Receiving Machines (AREA)
Abstract
The utility model discloses a power off protection device for the tax control cashier's machine which is provided with a power off detecting circuit and a high volume capacitor relay protection circuit. At the same time that the power off detecting circuit immediately giving out a power off interruption signal when the power supply is off, the high volume capacitor continues to provide a portion of the modules of the mainboard with electricity supply more than 500 milliseconds to ensure that the single data transmission between various physical media (such as the internal memory, the tax control storage device, the voice storage device, the tax control card, the user's card or the like) will not be interrupted by the power off and guarantees the integrity of the data transmission and the consistency of the data transmission between various modules. Compared with the prior art, the power off protection device for the tax control cashier's machine has the characteristics of reasonable design, simple structure, safety, reliability, convenient use, easy maintenance or the like, thereby possessing great wide application value.
Description
1, technical field
The utility model relates to a kind of commercial tax-control cash register improvement technology, specifically a kind of tax-control cash register power-off protection apparatus.
2, background technology
The tax-control cash register of prior art does not have power-off protection apparatus; in case generation grid power blackout; single transfer of data between all kinds of physical mediums in the tax-control cash register (as internal memory, tax-controlling memory, invoice memory, tax-controlling card, subscriber card etc.) will be interrupted because of power down; cause between imperfect and each module of transfer of data the transfer of data can not consistency; bring great inconvenience to the user, at present also not good solution.
3, summary of the invention
The purpose of this utility model is to overcome above-mentioned shortcoming, and a kind of tax-control cash register power-off protection apparatus is provided.The technical solution of the utility model realizes in the following manner, the continuous electric protection circuit B of power-fail detection circuit A and large bulk capacitance is set in the circuit in tax-control cash register, power-fail detection circuit A is by integrated circuit (IC) resistance R 2-R6, capacitor C 4-C5 forms, wherein resistance R 3 is attempted by 1 of integrated circuit (IC), between 4 pin, 4 pin connect positive source, 3 pin connecting resistance R4 of integrated circuit (IC), the tie point of R5, resistance R 4, R5 also connects capacitor C 5, capacitor C 5 also connects between the positive pole and ground wire of 3V power supply, resistance R 6 and capacitor C 4 also connect between 2 pin and ground wire of integrated circuit (IC), resistance R 2 and connect the positive pole of power supply 24v and 2 pin of integrated circuit (IC) between, 5 pin ground connection of integrated circuit (IC); The continuous electric protection circuit B of large bulk capacitance is made up of big capacitor C 3, tunable capacitor C1, C2, voltage stabilizing didoe D and resistance R 1; big capacitor C 3 and C2 also connect between 24V positive source and the ground wire; voltage stabilizing didoe D and capacitor C 1 are serially connected in the two ends of capacitor C 1; the positive pole of voltage stabilizing didoe D connects power supply 24v positive pole, between resistance R 1 serial connection voltage stabilizing didoe D positive pole and the circuit main board.
Remarkable advantage of the present utility model is: when power supply power-fail, power-fail detection circuit provides a power-fail interrupt signal immediately, simultaneously, large value capacitor continues part of module to mainboard provides power-on time more than 500 milliseconds, can guarantee single transfer of data between all kinds of physical mediums (as internal memory, tax-controlling memory, invoice memory, tax-controlling card, subscriber card etc.), guarantee the consistency of transfer of data between the integrality of transfer of data and each module not by power-fail interrupt.
4, description of drawings
Accompanying drawing 1 is the electrical block diagram of tax-control cash register power-off protection apparatus.
5, embodiment
Below in conjunction with accompanying drawing A of the present utility model is done following detailed description the in detail.
As shown in drawings, tax-control cash register power-off protection apparatus of the present utility model is made up of power-fail detection circuit A and the continuous electric protection circuit B of large bulk capacitance, power-fail detection circuit A is by integrated circuit (IC) resistance R 2-R6, capacitor C 4-C5 forms, wherein resistance R 3 is attempted by 1 of integrated circuit (IC), between 4 pin, 4 pin connect positive source, 3 pin connecting resistance R4 of integrated circuit (IC), the tie point of R5, resistance R 4, R5 also connects capacitor C 5, capacitor C 5 also connects between the positive pole and ground wire of 3V power supply, resistance R 6 and capacitor C 4 also connect between 2 pin and ground wire of integrated circuit (IC), resistance R 2 and connect the positive pole of power supply 24v and 2 pin of integrated circuit (IC) between, 5 pin ground connection of integrated circuit (IC);
The continuous electric protection circuit B of large bulk capacitance is made up of big capacitor C 3, tunable capacitor C1C2, voltage stabilizing didoe and resistance R 1; big capacitor C 3 and C2 also connect between 24V positive source and the ground wire; voltage stabilizing didoe D and capacitor C 1 are serially connected in the two ends of capacitor C 1; the positive pole of voltage stabilizing didoe D connects power supply 24v positive pole, between resistance R 1 serial connection voltage stabilizing didoe D positive pole and the circuit main board.
The model of the integrated circuit (IC) among the circuit B is LM393MX, and other electronic components are commercially available universal electric product.
A of the present utility model is compared with existing technology, have reasonable in design, simple in structure, safe and reliable, make With convenient, be easy to the characteristics such as maintenance, when power supply power-fail, can guarantee that all kinds of physical mediums are (such as internal memory, tax control Memory, invoice memory, tax-controlling card, subscriber card etc.) between the single transfer of data not by power-fail interrupt, The uniformity of transfer of data between the integrality of assurance transfer of data and each module. Thereby, have good popularization Use value.
Claims (1)
1, the tax-control cash register power-off protection apparatus, it is characterized in that forming by power-fail detection circuit A and the continuous electric protection circuit B of large bulk capacitance, power-fail detection circuit A is by integrated circuit (IC) resistance R 2-R6, capacitor C 4-C5 forms, wherein resistance R 3 is attempted by 1 of integrated circuit (IC), between 4 pin, 4 pin connect positive source, 3 pin connecting resistance R4 of integrated circuit (IC), the tie point of R5, resistance R 4, R5 also connects capacitor C 5, capacitor C 5 also connects between the positive pole and ground wire of 3V power supply, resistance R 6 and capacitor C 4 also connect between 2 pin and ground wire of integrated circuit (IC), resistance R 2 and connect the positive pole of power supply 24v and 2 pin of integrated circuit (IC) between, 5 pin ground connection of integrated circuit (IC); The continuous electric protection circuit B of large bulk capacitance is made up of big capacitor C 3, tunable capacitor C1 C2, voltage stabilizing didoe and resistance R 1; big capacitor C 3 and C2 also connect between 24V positive source and the ground wire; voltage stabilizing didoe D and capacitor C 1 are serially connected in the two ends of capacitor C 1; the positive pole of voltage stabilizing didoe D connects power supply 24v positive pole, between resistance R 1 serial connection voltage stabilizing didoe D positive pole and the circuit main board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620082699 CN2930064Y (en) | 2006-04-05 | 2006-04-05 | Power cut-off protector for tax control electronic cash register |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620082699 CN2930064Y (en) | 2006-04-05 | 2006-04-05 | Power cut-off protector for tax control electronic cash register |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2930064Y true CN2930064Y (en) | 2007-08-01 |
Family
ID=38308435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620082699 Expired - Fee Related CN2930064Y (en) | 2006-04-05 | 2006-04-05 | Power cut-off protector for tax control electronic cash register |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2930064Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867169B (en) * | 2009-04-17 | 2016-07-13 | 晨星软件研发(深圳)有限公司 | It is applied to the protection circuit of flash memory |
-
2006
- 2006-04-05 CN CN 200620082699 patent/CN2930064Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867169B (en) * | 2009-04-17 | 2016-07-13 | 晨星软件研发(深圳)有限公司 | It is applied to the protection circuit of flash memory |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103327656B (en) | Communication module and portable terminal | |
| CN103094793B (en) | The smart card connecting circuit of electronic equipment and electronic equipment | |
| CN207021723U (en) | A kind of multi-cell electric power management circuit and a kind of virtual reality helmet | |
| CN102738894A (en) | Modularized intelligent power distribution terminal based on bus port | |
| CN101398710B (en) | Power supply circuit for mainboard | |
| CN204203947U (en) | Two separate display is with aobvious android terminal | |
| CN202058194U (en) | Mobile terminal subscriber identify module (SIM) card packaging structure thereof | |
| CN209028159U (en) | Battery access state detection circuit and connector | |
| CN2930064Y (en) | Power cut-off protector for tax control electronic cash register | |
| CN102981585A (en) | Complementary metal-oxide-semiconductor (CMOS) chip information clear circuit | |
| CN105302018B (en) | Drive control circuit and industrial control equipment | |
| CN201854021U (en) | Soft starting circuit used for USB wireless modem | |
| CN203812394U (en) | Integrated collection terminal | |
| CN207319225U (en) | A kind of iic bus circuit with isolation features | |
| CN206282265U (en) | A kind of hot-plug protection system | |
| CN212965358U (en) | Broken line detection circuit with load access automatic wake-up function and power bank | |
| CN210109670U (en) | Docking station with interface protection function for mobile terminal | |
| CN203800659U (en) | Card type mobile power source with card (SD card) reading function | |
| CN202772069U (en) | Electrical switch and earth leakage protection apparatus with plug-in type lightning protection module | |
| CN2896387Y (en) | Tax-controlling cashier power-cut-off contiuous printing apparatus | |
| CN205942601U (en) | Electronic equipment interface communication reduces device of consumption | |
| CN205847285U (en) | A kind of fiber optical transceiver | |
| CN2865099Y (en) | Breaking protection circuit | |
| CN209525654U (en) | A kind of card reading circuit and intelligent electric energy meter | |
| CN205959193U (en) | USB timesharing multiplex circuit based on USB change over switch |
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: 20070801 Termination date: 20140405 |