CN2068704U - Memory electronic auto-counter when power failure - Google Patents
Memory electronic auto-counter when power failure Download PDFInfo
- Publication number
- CN2068704U CN2068704U CN 89218971 CN89218971U CN2068704U CN 2068704 U CN2068704 U CN 2068704U CN 89218971 CN89218971 CN 89218971 CN 89218971 U CN89218971 U CN 89218971U CN 2068704 U CN2068704 U CN 2068704U
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- CN
- China
- Prior art keywords
- counter
- power
- outage
- power supply
- supply
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Abstract
The utility model relates to a power-off memory electronic automatic counter which is composed of a stabilized voltage supply, a counter, a coding driver and an LED digitron display. A power-off retaining power supply is also arranged in a counter of the utility model, and a diode D-[3] is arranged between the power-off retaining power supply and the LED digitron display for separating the power-off retaining power supply and the LED digitron display. At the time of power failure, the power-off retaining power supply only supplies the power to the counter and the coding driver, which reaches the purpose that the power-off memory electronic automatic counter can carry out counting and memory after the power failure. The utility model has slight power consumption, and memory data can be maintained for months after the power failure.
Description
The utility model is to belong to utilize switch or pulse to import and the instrument of automatic counting.
Existing counter only has tally function, and when when outage, the data of having counted are all lost, therefore must wait restore electricity after counting again again, so not only time-consuming but also trouble, and can not continue after the outage to count.
Aim of the present utility model provides a kind of can not only the counting automatically, and has the outage memory, and the electricity of outage tally function is in counter, and it can reach the several months by data memory after outage.
Outage memory electronics auto-counter provided by the utility model, comprise stabilized voltage supply (1), counter (2), decoder driver (3), LED charactron display (4), also be provided with outage and keep power supply (5), stabilized voltage supply is supplied with counter (2) when civil power is arranged, the working power of decoder driver (3) and LED charactron display (4) has a diode D because of oppositely going here and there between LED charactron display (4) and outage maintenance power supply
3, outage keeps power supply (5) only to supply with counter (2) and decoder driver (3) when cutting off the power supply like this.
The utility model is described in further detail in conjunction with the accompanying drawings:
Fig. 1--be functional-block diagram of the present utility model
Fig. 2--be electrical schematic diagram of the present utility model
Fig. 3--be the utility model external form synoptic diagram
As shown in Figure 2,50HZ200 volt alternating current is through transformer 8 step-downs, D
1, D
2, C
1Full-wave rectification is again through 7905 three terminal regulator electric capacity of voltage regulation C
2, C
3After the filtering, produce-5 volts of D.C. regulated power supplies (1) and supply with the complete machine power supply.
Outage keeps power supply (5) to be unified into-the 4.5V direct supply by No. 2 battery strings of 3 joints, supplies with the counter IC of this machine during outage
1-IC
3With decoder driver IC
4-IC
8, outage keeps the positive pole of power supply (5) to be connected on the center tap of 8 utmost points of transformer, and negative pole keeps power switch K by outage
2With counter IC
1-IC
3Power end and diode D
3Anode link to each other diode D
3Negative electrode be connected on the common cathode of LED charactron display (4), when needs data memory or pre-anti-power failure data disappear, need only connect in use to keep power switch K
2
Be connected on the common cathode of LED charactron display (4),, need only connect maintenance power switch K in use when needs data memory or pre-anti-power failure data disappearance
2
Counter IC
1-IC
5Be the CD4518 integrated circuit, every CD4518 has two totalizers, because of CD4518 does not have special-purpose carry output, can only utilize output to connect the CE(clock gating of next utmost point counter) end, because the utility model will produce 5 decimal numbers, therefore three CD4518 integrated packages are connected with the cascaded carry mode.When from sensor (or pressing microswitch) input pulse, this pulse is through IC
1-IC
3Carry out binary counting, from IC
1-IC
3Export five binary-coded decimal signals and be added to decoder driver IC
4-IC
8Input end.IC
4-IC
8Adopt the CD4511 decoder driver, this driver is IC
1-IC
3The binary-coded decimal that counter is sent here is translated into decimal code, and the drive current of the about 15mA of generation is with driving LED charactron display.Owing to will produce 5 decimal numbers, drive 5 LED charactron displays with 5 CD4511 decoder drivers.The amplification count signal that the CD4511 decoder driver produces is through resistance R
1-R
35Be added to seven segment numerical display tube LED after the current limliting
1-LED
5, with control respective field and show respective digital, thereby the count pulse of sending here from sensor is also with regard on the corresponding LED of the being presented at charactron.
If do not need former count word, as long as click the zero clearing knob K on the counter
3, then all vanishing of numeral.
When outage, keep power supply because of in machine, being provided with outage, and keep between the power supply with a diode D at LED charactron display and outage
3Isolate, so outage keeps power supply only to supply with counter IC
1-IC
3And decoder driver IC
4-IC
8Work.Because counter and decoder driver all adopt the CMOS integrated circuit, so minimal power consumption is not more than 150MA.No. 2 dry cells of 3 joints can use 1 year, and data memory can be kept the several months.When using civil power, can the electric current of tens of MA be arranged to dry battery charge by circuit.
The utility model complete machine external form is seen Fig. 3, and this machine shell adopts the injection mo(u)lding of ABS engineering plastics, and the loam cake of complete machine and base are used from the merit screw and connected.Panel (6) is contained in the front portion of base, is the LED charactron on the top of panel (6), and dark brown organic glass is decorated in the charactron front, and zero clearing knob (7) is equipped with in following left side, presses zero clearing knob (7) complete machine return-to-zero.There is power switch (9) on following right side, between zero clearing knob (7) and power switch (9) switch (8) is housed, and connects outage maintenance power supply when switch (8) being pulled out " opening ", and complete machine just has data memory and tally function when outage.All parts in the machine all are loaded on the base, and lower right side, base rear portion is connected with the long power lead (11) of a 2m, and its lower-left side joint has the microswitch (10) (or sensor of other type) of a band shielding line.When pressing microswitch (10) (or input pulse), then the LED charactron shows respective digital.
Claims (2)
1, a kind of outage memory electronics auto-counter of being made up of stabilized voltage supply (1), counter (2), decoder driver (3), LED charactron display (4) can supply counter IC when it is characterized in that being provided with outage
1-IC
3And translate driver IC
4-IC
8The outage of work keeps power supply DC, keeps between power supply DC and the LED charactron display (4) with a diode D in outage
3Isolate D
3Positive pole connect the negative pole that outage keeps power supply DC, its negative pole is connected on 3 pin of power input of LED charactron display, outage keeps the positive pole of power supply DC to link to each other with ground.
2, electronics auto-counter according to claim 1 is characterized in that outage keeps power supply DC and counter IC
1-IC
3Between be provided with K switch
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89218971 CN2068704U (en) | 1989-11-03 | 1989-11-03 | Memory electronic auto-counter when power failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89218971 CN2068704U (en) | 1989-11-03 | 1989-11-03 | Memory electronic auto-counter when power failure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2068704U true CN2068704U (en) | 1991-01-02 |
Family
ID=4873934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89218971 Withdrawn CN2068704U (en) | 1989-11-03 | 1989-11-03 | Memory electronic auto-counter when power failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2068704U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101371691B (en) * | 2008-06-13 | 2011-02-09 | 广东洛贝电子科技有限公司 | Soybean milk machine with circuit-breaking memory circuit |
| CN103231406A (en) * | 2012-11-29 | 2013-08-07 | 莆田市坚强缝制设备有限公司 | Preset quantity belt cutting machine |
-
1989
- 1989-11-03 CN CN 89218971 patent/CN2068704U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101371691B (en) * | 2008-06-13 | 2011-02-09 | 广东洛贝电子科技有限公司 | Soybean milk machine with circuit-breaking memory circuit |
| CN103231406A (en) * | 2012-11-29 | 2013-08-07 | 莆田市坚强缝制设备有限公司 | Preset quantity belt cutting machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |