CN102929124B - LED digital display electronic clock - Google Patents
LED digital display electronic clock Download PDFInfo
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- CN102929124B CN102929124B CN201210461287.9A CN201210461287A CN102929124B CN 102929124 B CN102929124 B CN 102929124B CN 201210461287 A CN201210461287 A CN 201210461287A CN 102929124 B CN102929124 B CN 102929124B
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Abstract
The invention discloses an LED (Light-emitting Diode) digital display electronic clock which belongs to an electronic apparatus and is characterized in that the electronic clock comprises a power supply circuit, a quartz crystal oscillating circuit, an LED drive display circuit and a timing alarm circuit; a PMOS (P-channel Metal Oxide Semiconductor) large-scale integrated LM8560 and four-digit LED display screen is adopted, and hour and minute can be displayed by driving the display screen; an oscillating part adopts a quartz crystal as a time base signal source, so that the time precision is ensured; the electronic clock has a timing alarm function, the timing adjustment is convenient, the circuit is stable and reliable, the energy consumption is low, the integrated circuit adopts a socket for plugging, the fabrication efficiency is high, and the electronic clock is very suitable for extensive electronic enthusiasts and vocational electromechanical students for assembly.
Description
Technical field
The present invention relates to a kind of electronic product, be specifically related to the digital electronic clock that shows of a kind of LED.
Background technology
At present, electronic clock finished product this series products of a great variety but that applicable vast electronics hobby, especially vocational school's electrical category practising method implementation are assembled this piece shows that as LED is digital electronic clock does not almost have on the market; The invention discloses the digital electronic clock that shows of a kind of LED, its circuit feature is: comprise that power-supply circuit, quartz crystal oscillator circuit, LED drive display circuit and timing alarming circuit; Adopt PMOS large-scale integrated LM8560 and four LED display, when driving display screen just can show, point; Oscillating part adopts quartz crystal to do time-base signal source, thereby the precision while having guaranteed to walk, this circuit is also provided with timing alarm function, timing adjustment is convenient, and circuit is reliable and stable, and energy consumption is low, integrated circuit adopts socket plug-in mounting, make efficiency and success ratio are all very high, and interesting, practical, are applicable to very much numerous electrophiles and middle duty electrical category practising method implementation assembling use.
Summary of the invention
The present invention is in order to achieve the above object, and the technical scheme adopting is that the digital electronic clock that shows of a kind of LED, is characterized in that: comprise that power-supply circuit, quartz crystal oscillator circuit, LED drive display circuit and timing alarming circuit, described power-supply circuit is elementary by plug P connection transformer T, T level of transformer connects bridge diode VD6-VD9 input pin pin 1, pin 3, after rectification, output terminal pin 2, pin 4 are respectively feed circuit "+", "-" end, its pin 2 is connected with the positive pole of dry cell GB through isolating diode VD4, isolating diode VD5, and its pin 4 is connected with the negative pole of dry cell GB, described quartz crystal oscillator circuit comprises quartz crystal JT, capacitor C2, resistor R2, integrated circuit block IC2, quartz crystal JT is connected with integrated circuit block IC2 pin 9, pin 11 through capacitor C2, resistor R2 is connected between integrated circuit block IC2 pin 10, pin 11, integrated circuit block IC2 pin 8, pin 12 are connected with feed circuit "-" end, and integrated circuit block IC2 pin 16 connects isolating diode VD4 and isolating diode VD5 negative pole end, described LED drives display circuit by LED display, drive integrated circult IC1, resistor R1, capacitor C1, clock is adjusted, arrange and alarm button switch S 1, S2, S3, S4 and diode VD1, VD2 composition, its LED display pin 5, pin 6, pin 9, pin 10, pin 12, pin 13, pin 15, pin 16, pin 17, pin 18, pin 19, pin 20, pin 21, pin 30 respectively with drive integrated circult IC1 pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, pin 12, pin 13, pin 14 is connected, LED display pin 26 connecting triode VT2 emitters, after being connected with resistor R7, LED display pin 27 is connected with feed circuit "+" end through K switch 1-2, LED display pin 26 connects feed circuit "-" end, the emitter of LED display pin 29 connecting triode VT3, resistor R1 is connected with drive integrated circult IC1 pin 27 with one end after capacitor C1 parallel connection, the other end is connected with feed circuit "-" end, drive integrated circult IC1 pin 26 is connected with feed circuit "-" end, drive integrated circult IC1 pin 25 is connected with integrated circuit block IC2 pin 13, and pushbutton switch S1 one end connects drive integrated circult IC1 pin 22, the other end connects diode VD1 negative pole end, and pushbutton switch S2 one end connects drive integrated circult IC1 pin 21, the other end connects diode VD2 positive terminal, and pushbutton switch S3 one end connects drive integrated circult IC1 pin 15, the other end connects diode VD1 negative pole end, and pushbutton switch S4 one end connects drive integrated circult IC1 pin 18, pin 19, diode VD1 positive terminal, the other end connects drive integrated circult IC1 pin 15, and diode VD2 negative pole end is connected with feed circuit "+" end, described timing alarming circuit is made up of loudspeaker BL, K switch 1-1, triode VT1 and resistor R3, resistor R3 one end connects drive integrated circult IC1 pin 16, other end connecting triode VT1 base stage, triode VT1 collector connecting valve K1-1 one end, the K switch 1-1 other end connects loudspeaker BL one end, the loudspeaker BL other end connects diode VD4 negative pole end, and triode VT1 emitter connects feed circuit "-" end.
Beneficial effect: precision when product is walked is high, have and have timing alarm function, time is easy to adjust, DC-AC two-use, circuit is reliable and stable, and energy consumption is low, integrated circuit adopts socket plug-in mounting, make efficiency and success ratio are all very high, and interesting, practical, are applicable to very much numerous electrophiles and middle duty electrical category practising method implementation assembling use.
accompanying drawing explanation
Accompanying drawing 1 is the digital electronic clock circuit catenation principle figure that shows of LED provided by the invention.
Embodiment
Below in conjunction with accompanying drawing 1, the invention will be further described:
As shown in Figure 1, the digital electronic clock circuit that shows of LED, adopts a PMOS large-scale integrated LM8560 and four LED display, by drive display screen just can show time, point, oscillating part adopts quartz crystal to do time-base signal source, thus the precision while having guaranteed to walk, this circuit is also provided with timing alarm function, its timing adjustment is convenient, and circuit is reliable and stable, DC-AC two-use, energy consumption is low, integrated circuit adopts socket plug-in mounting, is made into power high, is applicable to very much numerous electrophiles and assembles use.
1, principle of work: integrated circuit (IC) 1 adopts PMOS large-scale integrated LM8560, time base 24 hours special digital clock integrated circuit of a 50/60HZ, there are 28 pins, 1-14 pin is that driving LED display screen stroke shows output terminal, the 15th pin is positive power source terminal, the 20th pin is negative power end, and the 27th pin is internal oscillator RC input end, and the 16th pin is warning output terminal.Plug P is inserted in commercial power socket, after step-down transformer T1 step-down, the VD6-VD9 rectification of bridge rectifier pipe and filter capacitor C3, filter capacitor C4 filtering, obtain direct current, for main circuit and display screen work, in the time that AC power has a power failure, reserve battery GB passes through isolating diode VD5 to circuit supply.Integrated circuit (IC) 2 adopts CD4060 and quartz crystal JT, capacitor C2, resistor R2 to form the time-base oscillation circuit of 60HZ, CD4060 inside comprises 14 two-dividers and an oscillator, simple circuit, the oscillator signal of quartz crystal JT self 30720Hz is after frequency division, the signal that obtains 60Hz is delivered to 25 pin of integrated circuit (IC) 1, and each section of stroke in triode VT2, triode VT3 driven display screen divides two groups to light in turn.When mixing up after the time, and press after K switch 1-1 and switch K switch 1-2, there is green some indication display screen lower right, while having the signal of driving, makes triode VT1 work through resistor R3 to timing, can timing alarm output.On products panel, from left to right, existing five microswitches, is respectively S4, S3, K1-1, S2, S1, when wherein S1 turns down, and S2 tune minute, S3 timing clock, when S4 sets up, K1-1 timing is alarm switch, after K1-1 disconnects, quarter-bell is inactive, in order to avoid impact is had a rest; When timing clock, S1 need be press S3 time, pressed simultaneously, hourage can be adjusted.When pressing S3, press the adjustable alarm clock number when actual of S2; Set up when alarm, when need pressing S4, press the hourage of the adjustable alarm clock of S1, when pressing S4, press the adjustable alarm clock number in fact time of S2.
2, mounting process requirement
Before welding, please with multimeter, each element is first measured starting, when installation, please first filled short low and heat-resisting element as resistor, capacitor, then refill larger element, finally fill the element that To Be Protected from Heat as triode, integrated circuit block.The installation of resistance: after please resistance value being chosen, can adopt the vertical circuit board of being close to install according to the distance in two holes.When electrolytic condenser, diode, triode are installed, notice that polarity, electrolytic condenser C4 is close to the horizontal installation of circuit board, electrolytic condenser C3 is close to the vertical installation of circuit board; Diode is close to the vertical installation of circuit board; When installing, triode notes model; Touch-switch and self-lock switch are close to circuit board and are installed; Winding displacement two ends are gone on plastic skin after tin, one end connects the display screen of LED by the sequence number of schematic diagram, an other termination circuit plate, and loudspeaker BL notes wiring polarity while installation, weld respectively red, unlicensed tour guide's line at the two ends of loudspeaker BL, BL ﹢, BL-on the other end difference connection circuit pcb board of wire.In addition, also have four wire jumper J1-CJ4 on circuit pcb board, the unnecessary lead-foot-line of available other elements serves as.Heat-shrink tube is enclosed within on the wire of power transformer primary coil, then welded together the wire of power cord plug and primary coil, mobile heat-shrink tube is to weld, the safety while guaranteeing to use.It is upper that transformer is arranged on the seat that two of protecgulums are high, fixes with screw, and place in circuit is to note distinguishing primary and secondary, and loudspeaker is contained in the resonant cavity seat hole of protecgulum, taps fixing with glue electric soldering iron.Display screen and circuit board are fixed with four self-tapping screws respectively, and the winding displacement between circuit board and display screen becomes S type, prevent that winding displacement from fractureing at weld.After power lead card number, draw shell, battery spring is good and sound in order, and protecgulum and bonnet are buckled well after good, more fixing with self-tapping screw.
3, debugging specification
Before energising, should conscientiously contrast circuit theory diagrams, wiring board, check and have error-free weldering, solder skip, particularly observe and on circuit board, have or not the situation of short circuit to produce, will get rid of one by one if any fault, as long as welding is correct, after energising, can normally work, time showing is also flashed, and after adjusting, has not just flashed.
4,component List and model
| Sequence number | Title | Title | Consumption | Item | |
| 1 | Integrated circuit | LM8560 | 1 | IC1 | |
| 2 | Integrated circuit | CD4060 | 1 | IC2 | |
| 3 | Diode | IN4001 | 1 | D1- |
|
| 4 | Triode | 9013 | 2 | VT3、VT4 | |
| 5 | Triode | 9012 | 1 | VT2 | |
| 6 | Triode | 8050 | 1 | VT1 | |
| 7 | Display screen | FTTL-655G | 1 | LED | |
| 8 | Crystal oscillator | 30.720 |
1 | |
|
| 9 | |
12×9 | 1 | |
|
| 10 | Resistance | 1k | 1 | R7 | |
| 11 | Resistance | 6.8 |
3 | R4.5.6 | |
| 12 | Resistance | 10k | 1 | R3 | |
| 13 | Resistance | 120k | 1 | R1 | |
| 14 | Resistance | 1M | 1 | R2 | |
| 15 | Power transformer | 220V/9V/ |
1 | ? | |
| 16 | Ceramic | 20pF | 1 | |
|
| 17 | Ceramic | 103pF | 1 | C1 | |
| 18 | | 220uF | 1 | C3 | |
| 19 | | 1000uF | 1 | C4 | |
| 20 | Touch-switch | 6×6×17 | 4 | S1-S4 | |
| 21 | Self-lock switch | 7×7 | 2 | K1-1、K1-2 | |
| 22 | Button cap | ? | 1 | ? | |
| 23 | Integrated socket | 28 |
1 | ? | |
| 24 | |
16 |
1 | ? | |
| 25 | Plug partially | 1.2 |
1 | ? | |
| 26 | Winding displacement | 8CM × 18 |
1 group | ? | |
| 27 | Wire | 1.0×60MM | 4 | ? | |
| 28 | Electronics pole piece | ? | A set of | ? | |
| 29 | Front and rear casing battery cover | Front and rear casing battery cover | Three | ? | |
| 30 | Screw | PA3×6MM | 5 | ? | |
| 31 | Screw | PA3×8MM | 1 | ? | |
| 32 | Heat- |
3×20 |
2 | ? | |
| 33 | | Instructions | 1 part | ? | |
| 34 | PCB wiring board | ? | 1 | ? |
Although described by reference to the accompanying drawings embodiments of the present invention, various distortion that those of ordinary skills do not need creativity to work just to make within the scope of the appended claims or revise the protection domain that still belongs to this patent.
Claims (1)
1. the digital electronic clock that shows of LED, is characterized in that: comprise that power-supply circuit, quartz crystal oscillator circuit, LED drive display circuit and timing alarming circuit; Described power-supply circuit is elementary by plug P connection transformer T, T level of transformer connects bridge diode VD6-VD9 input pin pin 1, pin 3, after rectification, output terminal pin 2, pin 4 are respectively feed circuit "+", "-" end, its pin 2 is connected with the positive pole of dry cell GB through isolating diode VD4, isolating diode VD5, and its pin 4 is connected with the negative pole of dry cell GB;
Described quartz crystal oscillator circuit comprises quartz crystal JT, capacitor C2, resistor R2, integrated circuit block IC2, quartz crystal JT is connected with integrated circuit block IC2 pin 9, pin 11 through capacitor C2, resistor R2 is connected between integrated circuit block IC2 pin 10, pin 11, integrated circuit block IC2 pin 8, pin 12 are connected with feed circuit "-" end, and integrated circuit block IC2 pin 16 connects isolating diode VD4 and isolating diode VD5 negative pole end, described LED drives display circuit by LED display, drive integrated circult IC1, resistor R1, capacitor C1, clock is adjusted, arrange and alarm button switch S 1, S2, S3, S4 and diode VD1, VD2 composition, its LED display pin 5, pin 6, pin 9, pin 10, pin 12, pin 13, pin 15, pin 16, pin 17, pin 18, pin 19, pin 20, pin 21, pin 30 respectively with drive integrated circult IC1 pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, pin 12, pin 13, pin 14 is connected, LED display pin 26 connecting triode VT2 emitters, after being connected with resistor R7, LED display pin 27 is connected with feed circuit "+" end through K switch 1-2, LED display pin 26 connects feed circuit "-" end, the emitter of LED display pin 29 connecting triode VT3, resistor R1 is connected with drive integrated circult IC1 pin 27 with one end after capacitor C1 parallel connection, the other end is connected with feed circuit "-" end, drive integrated circult IC1 pin 26 is connected with feed circuit "-" end, drive integrated circult IC1 pin 25 is connected with integrated circuit block IC2 pin 13, and pushbutton switch S1 one end connects drive integrated circult IC1 pin 22, the other end connects diode VD1 negative pole end, and pushbutton switch S2 one end connects drive integrated circult IC1 pin 21, the other end connects diode VD2 positive terminal, and pushbutton switch S3 one end connects drive integrated circult IC1 pin 15, the other end connects diode VD1 negative pole end, and pushbutton switch S4 one end connects drive integrated circult IC1 pin 18, pin 19, diode VD1 positive terminal, the other end connects drive integrated circult IC1 pin 15, and diode VD2 negative pole end is connected with feed circuit "+" end, described timing alarming circuit is made up of loudspeaker BL, K switch 1-1, triode VT1 and resistor R3, resistor R3 one end connects drive integrated circult IC1 pin 16, other end connecting triode VT1 base stage, triode VT1 collector connecting valve K1-1 one end, the K switch 1-1 other end connects loudspeaker BL one end, the loudspeaker BL other end connects diode VD4 negative pole end, and triode VT1 emitter connects feed circuit "-" end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210461287.9A CN102929124B (en) | 2012-11-16 | 2012-11-16 | LED digital display electronic clock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210461287.9A CN102929124B (en) | 2012-11-16 | 2012-11-16 | LED digital display electronic clock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102929124A CN102929124A (en) | 2013-02-13 |
| CN102929124B true CN102929124B (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210461287.9A Active CN102929124B (en) | 2012-11-16 | 2012-11-16 | LED digital display electronic clock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102929124B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4280210A (en) * | 1977-10-03 | 1981-07-21 | Citizen Watch Co., Ltd. | Electronic alarm timepiece |
| CN86210643U (en) * | 1986-12-25 | 1987-12-16 | 卓达宗 | Multi-functional digital electronic clock with time control |
| CN2064901U (en) * | 1989-09-19 | 1990-10-31 | 富良 | Quartz clock with programming double indication |
| CN2116234U (en) * | 1992-03-07 | 1992-09-16 | 朱福顺 | Electronic calendar wall clock |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202886872U (en) * | 2012-11-16 | 2013-04-17 | 陈清尧 | LED (light-emitting diode) digital display electronic clock |
-
2012
- 2012-11-16 CN CN201210461287.9A patent/CN102929124B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4280210A (en) * | 1977-10-03 | 1981-07-21 | Citizen Watch Co., Ltd. | Electronic alarm timepiece |
| CN86210643U (en) * | 1986-12-25 | 1987-12-16 | 卓达宗 | Multi-functional digital electronic clock with time control |
| CN2064901U (en) * | 1989-09-19 | 1990-10-31 | 富良 | Quartz clock with programming double indication |
| CN2116234U (en) * | 1992-03-07 | 1992-09-16 | 朱福顺 | Electronic calendar wall clock |
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| Publication number | Publication date |
|---|---|
| CN102929124A (en) | 2013-02-13 |
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Owner name: CHENGDU PUJIANG KEXIAN TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: CHEN QINGYAO Effective date: 20140410 |
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Effective date of registration: 20140410 Address after: Po Yan Street in Heshan town of Pujiang County of Chengdu City, Sichuan province 611630 No. 6 Building 1 layer 1 Applicant after: CHENGDU PUJIANG KEXIAN TECHNOLOGY CO., LTD. Address before: 611630 vocational secondary school of Pujiang County, Sichuan, Chengdu Applicant before: Chen Qingyao |
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Owner name: QIDONG ZHONGHENG LIGHTING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: CHENGDU PUJIANG KEXIAN TECHNOLOGY CO., LTD. Effective date: 20140723 |
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Effective date of registration: 20140723 Address after: 226236 No. 26, Jiangzhou Road, Binhai Industrial Park, Nantong, Jiangsu, Qidong Patentee after: Qidong Civilight Lighting (shanghai) Co., Ltd. Address before: Po Yan Street in Heshan town of Pujiang County of Chengdu City, Sichuan province 611630 No. 6 Building 1 layer 1 Patentee before: CHENGDU PUJIANG KEXIAN TECHNOLOGY CO., LTD. |