CN2350820Y - Family education praise and criticism prompter - Google Patents

Abstract

The utility model relates to the technical field of education auxiliary tools, which is an electronic device for prompting and assessing the study of a child during the process of family education. The utility model is composed of a power supply circuit, a speech recording and reproducing circuit, a low discharge circuit and a speech control oscillation circuit, and the prompting and performing of the praise and criticism during the process of family education are scientific and reasonable. The speech in the utility model can be preserved and can be played frequently, so the educational effect is obvious and lasting, and the education is lively.

Description

The private tutor praises the criticism prompting device

The utility model relates to education appurtenance technical field, specifically a kind of electronic equipment of learning for prompting examination child when the private tutor.

Now the private tutor is attached great importance to, in the private tutor, learn for supervising child, need often utilization to praise the method for criticizing prompting, but traditional way is criticism, praise or the prompting of oral formula, owing to often only give an account of, so child is difficult to draw attention, and bad behavior is often offended again; Good behavior because can not be fully recognized that father and mother's approval, is difficult to develop, owing to lack science and rationality, educational effect is undesirable not lasting yet.

The purpose of this utility model is that a kind of possess science and rationality are provided during for the private tutor, and praise, criticize, the prompting educational effect is obvious, and prompting device is criticized in lasting praise.

The technical solution of the utility model is such: a kind of private tutor praises the criticism prompting device, partly form by power circuit, audio record circuit, low discharging circuit, playback control, oscillatory circuit four, its power supply partly is that the 220V civil power provides low-voltage DC after step-down, rectification, filtering, voltage stabilizing, playback circuitry partly is to be formations such as core, external microphone, loudspeaker, Resistor-Capacitor Unit with solid speech recording and reproducing integrated circuit; Low discharging circuit is to be core with the power amplifier integrate circuit, and external resistor and capacitor component constitutes; The playback control oscillation circuit partly is to be core with the NE555 integrated circuit, and external resistor and capacitor component constitutes, the conducting of its output control triode with end the batch (-type) playback of control speech IC.

Owing to adopted technique scheme, it is scientific and reasonable to make praise, the method for criticizing, pointing out carry out, and its voice can be preserved, and can regularly play, and educational effect obviously and lastingly, education vividly.

Below in conjunction with accompanying drawing the utility model is further described:

Accompanying drawing 1 is a circuit structure schematic block diagram of the present utility model;

Fig. 2 is a circuit diagram of the present utility model;

By power circuit illustrated in figures 1 and 2 by power switch (43), transformer (42), commutation diode (40), Leaded Ceramic Disc Capacitor (41,36,23), electrochemical capacitor (37,24), three-terminal regulator block 7805 (30) are formed.Playback circuitry by: audio record circuit and low discharging circuit are formed, wherein audio record circuit comprises, speech recording and reproducing integrated circuit (4), resistance (1,12,13,22,25,27), electric capacity (10,14,15,16,17,18,26), light emitting diode (19) is annotated polar body microphone (21), normal open switch (44) composition; Low discharging circuit is by power amplifier integrate circuit (5), resistance (3), electric capacity (2,6,7,11), and loudspeaker (8) is formed.The playback control oscillation circuit is by NE555 (28), resistance (20,31,33,39), and potentiometer (34), diode (32,38), electric capacity (29,35), triode (9) are formed.

Transformer (4) primary coil connects power lead, a secondary end ground connection, another termination commutation diode (40) anode, electric capacity (41) is in parallel with diode (40), the output of diode (40) negative terminal connects three-terminal regulator block (30) input end, and Leaded Ceramic Disc Capacitor (36) one pin, electrochemical capacitor (37) anode, another pin of Leaded Ceramic Disc Capacitor (36) and electrochemical capacitor (37) negative terminal, and the equal ground connection of three-terminal regulator block (30) earth terminal, three-terminal regulator block (30) output termination Leaded Ceramic Disc Capacitor (23) one pin, and the anode of electrochemical capacitor (24), the equal ground connection of negative terminal of another pin of Leaded Ceramic Disc Capacitor (23) and electrochemical capacitor (24), the output terminal while of three-terminal regulator block (30) and 28 pin of speech recording and reproducing integrated circuit (4), 16 pin, the 4. pin of NE555 (28), 8. pin, one end of attacking the 6. pin of putting integrated circuit and resistance (27) connects.

6. the pin of speech recording and reproducing integrated circuit (4), 11 pin, 12 pin, 13 pin, the equal ground connection of 26 pin, 27 pin are by switch (44) ground connection, 7. pin is through resistance (1) ground connection, 16 pin connect Leaded Ceramic Disc Capacitor (15) one pin and electrochemical capacitor (16) anode, the equal ground connection of another pin of two electric capacity, 16 pin connect power supply simultaneously, 17 pin connect electric capacity (18) one ends, another termination microphone (21) negative terminal of electric capacity (18) and resistance (22) one ends, another termination 27 pin of resistance (22), 18 pin connect electric capacity (17) one ends, the anode of another termination microphone (21) of electric capacity (17) and resistance (25) one ends, the anode of resistance (25) other end while connecting resistance (27) one ends and electrochemical capacitor (26), electrochemical capacitor (26) negativing ending grounding, another termination power of resistance (27), 19 pin are connecting resistance (13) one ends and electrochemical capacitor (14) anode simultaneously, resistance (13) other end, the equal ground connection of electrochemical capacitor (14) negative terminal, 20 pin connect by electric capacity (10) with 21 pin, one end of 25 pin connecting resistances (12), the negative terminal of resistance (12) other end sending and receiving light pipes (19), the positive ending grounding source of luminotron (19), 28 pin connect power supply.

14 pin of speech recording and reproducing integrated circuit (4) connect the anode of electrochemical capacitor (2), the negative terminal of electrochemical capacitor (2) connects the 3. pin of power amplifier integrate circuit (5), 2. the pin of power amplifier integrate circuit (5), 4. pin ground connection, 6. pin connects power supply, 1. pin connects electrochemical capacitor (6) anode, electrochemical capacitor (6) negative terminal connects 8. pin, 5. pin output connects the anode of electrochemical capacitor (7), the negative terminal of electrochemical capacitor (7) connects loudspeaker (8) anode, the negativing ending grounding of loudspeaker (8), the 15 pin output of speech recording and reproducing (4) connects electrochemical capacitor (11) anode, its negativing ending grounding.

23 pin of speech recording and reproducing integrated (4) connect the collector of triode (9), the grounded emitter of triode (9), base stage connecting resistance (20) one ends, the 3. pin of resistance (20) another termination NE555 (28), the 1. pin ground connection of NE555 (28), 4. pin, 8. pin connects power supply, 5. pin is by electric capacity 29 ground connection, 2. pin is after 6. pin links, connect the output terminal of potentiometer (34) and the anode of electrochemical capacitor (35), electrochemical capacitor (35) negativing ending grounding, two ends in addition of potentiometer (34) are connecting resistance (33) respectively, (39) a end, the anode of another terminating diode (32) of resistance (33), the negative terminal of another terminating diode (38) of resistance (39), the anode of the negative terminal of diode (32) and diode (38) is connected the back and links another termination power of resistance (31) with an end of resistance (31) and the 7. pin of NE555 (28).

During use:

Power turn-on switch (43), 220V civil power be through transformer (42) step-down, and diode (40) rectification, electric capacity (36,37) filtering, three-terminal regulator block (30) voltage stabilizing offer the stable DC voltage of entire circuit 5V again through electric capacity (23,24) filtering.

During recording, power supply provides operating voltage for notes polar body microphones (21) through resistance (27,25), electric capacity (26) is to power filter, the microphone negative terminal connects switch (44) by resistance (22), press normal open switch (44), 27 pin ground connection of speech IC (4), luminotron (19) is bright, resistance (12) is current-limiting resistance, face toward microphone (21) but sound import (0-30 second) this moment, sound is input to the inner recording of speech recording and reproducing integrated circuit (4) through electric capacity (17,18), and the sound of typing is not afraid of power down.Release button (44) End of Tape, or recorded full 30 seconds, can finish automatically, luminotron (19) extinguishes.Playback: the meeting Automatic Cycle playback repeatedly that finishes of recording, playback output is by the 14 pin output of speech IC (4), be coupled to the 3. pin input of power amplifier integrate circuit (5) through electric capacity (2), and after power amplification from 5. pin output, be coupled to loudspeaker (8) playback through electric capacity (7).

Batch (-type) playback control: power supply charges to electric capacity (35) through resistance (31), diode (38), resistance (39), potentiometer (34), charging beginning just, the 2. 6. pin low level of NE555 (28), exporting 3., pin is a high level, make triode (9) conducting through resistance (20), 23 pin that then make speech IC (4) do not influence recording state by the collector of triode (9), when grounded emitter is in tone playing state.When charging process certain hour (setting 4 minutes), NE555 (28) 2. 6. pin reach turnover voltage, 3. pin output low level, through resistance (20) triode (9) is ended, playback finishes, electric charge on electric capacity (35) anode is through potentiometer (34) simultaneously, resistance (33), diode (32), the 7. pin of NE555 (28) 1. pin discharges over the ground, discharge is through certain hour (setting 10 minutes), the discharge end, NE555 (28) 2. 6. pin reach turnover voltage again, 3. pin is exported high level again, triode (9) conducting again, charging process repeats again simultaneously, by constantly discharging and recharging, make the triode conducting and end, reach intermittent cyclic playback purpose.Father and mother can strengthen child's memory by continuous intermittent cycle playback to child's praise, criticism, prompting, because power down be not afraid of in the voice that store,, can carry out playback so open playback switch when needing, reach and draw inferences about other cases from one instance, play the good education effect.

Claims (1)

1, a kind of private tutor praises the criticism prompting device, it is made up of power circuit, audio record circuit, low discharging circuit, playback control oscillation circuit four parts, it is characterized in that: playback circuitry partly is to be formations such as core, external microphone, loudspeaker, Resistor-Capacitor Unit with solid speech recording and reproducing integrated circuit.

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