CN2071803U - Digital indicator attached on pointer type quarts clock - Google Patents

Abstract

The utility model discloses a digital indicator attached on pointer type quarts clocks, which belongs to the electronic timer class. For overcoming the defect that the general pointer type quarts clock is uneasy to be observed at night and has no timing and alarming functions, the scheme is especially put forward. An LED digital indicator is added on a pointer type quarts clock. 60Hz oscillating frequency is obtained after high-frequency signals are taken out from the original quartz clock and are divided frequency and processed through I, C1 and IC2; a large scale clock circuit LM8361 is triggered to drive the LED digital indicating board to display out. Using the digital indicator attached on pointer type quarts clock can observe time at night, display doubly in pointer and digital, realize timing and alarming, and display remote time. The utility model has the advantages of new functions, attractive appearance and wide developing prospects.

Description

Digital indicator attached on pointer type quarts clock

The utility model belongs to the electronic timer class of GO4G.

Along with improving constantly of people's lives, the quartz analog clock of all styles of is very popular at present.It has punctual timing, integral point function such as give the correct time, but it also exists night or light and observe difficulty when dark, and do not have and regularly work the function of making a noise, and using to family makes troubles.

The shortcoming that the purpose of this utility model is when overcoming original quartz analog clock and see night difficulty and does not have an alarm clock function proposes this programme.It is to increase LED time figure display on crystal clock, and sets up regularly signalling device, opens up the new purposes of new varieties, and improves the function of original clock.

By as above design, the feature that is attached to the time figure display on the quartz analog clock that this programme provided is: its time figure display board (T) is located on the position in crystal clock housing front; Frequency is taken from the crystal oscillator (JT) of quartz analog clock during it walk; The circuit of its LED digital indicator is made of power unit, frequency divider, driver, digital display board and alarm clock part.Wherein, its power supply unit by transformer (B1), for the full wave rectifier (D2, D3) of digital display board working current, for the half-wave rectifier (D1) of the working current of frequency divider, driver and alarm clock sound equipment part, and power-off time frequency divider, driver and the alarm clock reserve battery (E) of partly powering constituted.Its frequency divider is made up of the integrated package (IC1) and the ten secondary counters (IC2) of four AND.Its driver has been selected extensive integrated circuit of clock (IC3) for use.Its display board adopts common cathode 4-digit number time display plate (T).Its alarm clock part divides key K3, transistor amplifier (BG1, BG2, BG3), transformer (B2), loudspeaker (Y) to be constituted in key K2, school during by the shift key K1 that has preset the noisy time, school.

The digital indicator that is attached in this programme on the crystal clock also is a complete electronic timer, frequency is taken from the crystal oscillator of former crystal clock during it walk, synchronous in the time of can obtaining two clocks like this and walk, can realize that a time shows with pointer and digital double.Its selected LED digital display board has certain luminous intensity, when being convenient to see night, has opened up the new purposes of new varieties, has also increased the artistry of decorative appearance.For being transformed into the 60HZ of demonstration time, the 32768HZ that takes from crystal oscillator designed frequency divider in this structure, it is made of IC1, IC2, the oscillator that M1 among its IC1, M2 form is transferred to 32760HZ earlier with frequency, again through the rest-set flip-flop of M3, M4 composition and 546 frequency dividers of ten secondary binary counter IC2 composition, the then frequency signal of exportable 60HZ.Its driver has adopted extensive integrated clock circuit, and its function is a lot, is limited to the restriction that this programme commercial grade is selected, and only develops its partial function.The K2 that it can be when pressing the school, the school is divided, K3 button are consistent with time of digital indicator and pointer clock, and this is the dual demonstration of a kind of time; Also digital clock can be transferred to the time in other time zone, this is the strange land time showing; Press the shift key K1 that has preset the time of making a noise, can insert predetermined rising the time of making a noise by K2, K3 again, when clock with preset the noisy time when consistent, export a noble potential from 27 pin of IC3, BG2 and B2 partly form a continuous alarm clock acoustic signal; Take out a second Signal-controlled switch pipe BG1 through 39 pin simultaneously, former continuous acoustic signal is become the interval signal of level second by the effect of BG1; The alarm clock sound equipment starts the back and takes out 2 minutes signal closes switch pipe BG3 from 17 pin, thereby makes 26 pin ground connection that alarm clock is stopped.Therefore, this programme can obtain 2 minutes long interruption alarm clock signals at any preset time, and this is valuable function and purposes that equal quartz analog clock is not opened up.What the LED digital display board (T) of this programme adopted is common cathode 4-digit number red (green) look active display, be equipped with two bright spots in interposition, as the time and the boundary of branch, this two bright spot is pressed the frequency scintillation of 60HZ at ordinary times, upper and lower in the left side of display board respectively have a bright spot, the difference of expression morning and afternoon.The working current of display board is only supplied with in the full-wave rectification of power unit.Half-wave rectification is supplied with frequency divider, driver and the required work capacity of alarm clock part, replaced by the interior reserve battery of establishing during outage, this can guarantee that frequency divider and driver do not quit work, keep the synchronously consistent of two clocks, but at this moment there is not display digit, because of the display board consumed power is bigger, can extend the life of a cell like this.Because the function of extensive integrated clock circuit is a lot, also can further develop later on, can select the display board of large-scale many colors for use, demonstrates numerals such as the moon, day, week.

Adopt the technical program can embody following superiority: (1) can realize the dual demonstration of same time, has increased the artistry of decorative appearance; (2) digital display board has certain luminous intensity, is convenient to the night observation time; (3) increased and regularly played noisy of great value function; (4) can insert and show the strange land time; (5) it is simple in structure, is easy to modularization, is convenient to produce in batches.

Description of drawings:

Fig. 1 is the schematic appearance that present embodiment has the crystal clock of additional digital indicator.

Fig. 2 is the electrical schematic diagram of present embodiment.

Among the figure: (1)-quartz analog clock; (2)-digital display board; (3)-regularly play noisy shift key; (4)-key during the school; (5)-school divides key; (JT)-crystal oscillator; (IC1)-four AND integrated package; (IC2)-ten secondary binary counter; (B1)-power transformer; (D1, D2, D3)-commutation diode; (D4)-restriction direction of current diode; (D5, D6)-control diode; (E)-and reserve battery, 9V; (IC3)-extensive integrated clock circuit; (K1) one regularly work the shift key that makes a noise; (K2)-key during the school; (K3)-school divides key; The transistor amplifier of (BG1, BG2, BG3)-alarm clock sound equipment part; (B2)-output transformer; (Y)-loudspeaker; (T)-digital display board.

Embodiment: in present embodiment shown in Figure 2, IC1 selects CD4001 for use, and IC2 selects CD4040 for use, D1-D6 all selects 1N400 for use, and IC3 selects LM8361 for use, and digital display board is selected FR1094-117 common cathode type display board for use, BG1-BG3 all selects 3DG12 for use, and power transformer is selected 3 watts on E8 type for use.

The sample of this programme shows normally through the probationary certificate function-stable, is subjected to not seeing earlier person's very big welcome.

Claims (1)

1. A kind of LED digital indicator that is attached on the quartz analog clock is characterized in that its digital display board (T) is attached on the position in quartz analog clock housing front; Frequency is to take from the crystal oscillator of quartz analog clock (JT) during it walk; The circuit of its LED digital indicator is by power unit, frequency divider, driver, digital display board, and the alarm clock part constitutes, wherein its power supply unit is by transformer (B1), full wave rectifier (D2 for the digital display board working current, D3), supply frequency divider and driver and alarm clock sound portion to divide the half-wave rectifier (D1) of work electric current, reach when cutting off the power supply to frequency divider, the reserve battery that driver and alarm clock are partly powered (E) constitutes, its frequency divider is made of four AND (IC1) and ten secondary counters (IC2), its driver is made of integrated circuit of clock (IC3), its display adopts common cathode 4-digit number time display plate (T), and its alarm clock part is by the shift key K1 that has preset the time of making a noise, key K2 during the school, key K3 is divided in the school, transistor amplifier (BG1, BG2, BG3), transformer (B2), loudspeaker (Y) constitutes.

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