CN2159045Y - Door bell capable of leaving one's comments - Google Patents
Door bell capable of leaving one's comments Download PDFInfo
- Publication number
- CN2159045Y CN2159045Y CN 93231059 CN93231059U CN2159045Y CN 2159045 Y CN2159045 Y CN 2159045Y CN 93231059 CN93231059 CN 93231059 CN 93231059 U CN93231059 U CN 93231059U CN 2159045 Y CN2159045 Y CN 2159045Y
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- pin
- integrated circuit
- utmost point
- recording
- cz2a
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Abstract
The utility model relates to a household door bell capable of leaving messages, which solves the disadvantage that ordinary door bells can not leave messages. The household door bell capable of leaving messages comprises a sensitive switch, a monostable trigger, an audio oscillator, an amplifier, a loudspeaker, microphones and a recording and playing device, wherein, the sensitive switch is connected with the monostable trigger and the audio oscillator, and the output signals of the monostable trigger are conveyed into the recording and playing device. The output signals of the audio oscillator drive the loudspeaker when going through the amplifier, and the microphones are connected in parallel at the two ends of the microphone of the recording and playing device. The anode of the power supply E of the recording and playing device is disconnected, and the anode and the cathode of the power supply E are connected with the monostable trigger, the audio oscillator and the amplifier. The utility model is mainly used for family members and visiting guests to leave messages.
Description
The utility model relates to a kind of doorbell.
The 312nd page of " the practical electronic circuit complete works () " that publish in March, 1987 discloses one and has been called " alarm device of knocking at the door that can reply ".This alarm device of knocking at the door can change tap-tap into electric signal, informs owner by the loudspeaker sounding.Click switch if owner learns when the someone knocks at the door, people outdoors can learn that owner is in by lumination of light emitting diode and loudspeaker sounding.But this alarm device of knocking at the door that can reply has only when owner is in, and could realize replying.When owner stayed out, visiting guest can't leave information for owner.
Goal of the invention of the present utility model is a kind of doorbell that can leave a message of design, and it utilizes the recording and/or reproducing apparatus of family visiting guest's message can be recorded down.
Goal of the invention of the present utility model is achieved in that message leaving door bell, and it has microswitch K, monostalbe trigger, recording oscillator, amplifier, loudspeaker Y, microphone M1 and recording and/or reproducing apparatus.Its special character is that microswitch K is connected with audio frequency oscillator with monostalbe trigger, upset of control monostalbe trigger and audio frequency oscillator vibration; The output signal of monostalbe trigger is sent into recording and/or reproducing apparatus, provides working power to recording and/or reproducing apparatus; The output terminal of audio frequency oscillator is connected with amplifier input terminal, and sound signal is sent into and put device amplification rear drive loudspeaker Y sounding; Microphone M1 is connected in parallel on the two ends of the microphone M2 of recording and/or reproducing apparatus; The extension line of the positive pole of the direct supply E of recording and/or reproducing apparatus disconnects.The both positive and negative polarity of direct supply E is connected with monostalbe trigger, audio frequency oscillator and amplifier, provides power supply to them.
The utlity model has following advantage, it can not establish special power supply, directly utilizes the power supply of the recording and/or reproducing apparatus of family.When owner stayed out, the visiting guest can leave a message, and message can be learnt the information that the visiting guest stays by recording and/or reproducing apparatus after owner goes home by the recording and/or reproducing apparatus record down.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
Fig. 1 is a circuit block diagram of the present utility model, and as Figure of abstract.
Fig. 2 is a circuit diagram of the present utility model.
As shown in Figure 1 and Figure 2, monostalbe trigger is made up of integrated circuit U1, resistance R 1 and capacitor C, and audio frequency oscillator is made up of integrated circuit U2, and amplifier is made up of triode T, and integrated circuit U1 adopts NE555, and integrated circuit U2 adopts KD9300.The f end of microswitch K is connected with the o end with the p end of three utmost point connector CZ2A respectively with the d end, and the e end of microswitch K is connected with 2 pin of integrated circuit U1.The end of capacitor C is connected with 7 pin with 6 pin of integrated circuit U1, and the other end of capacitor C is connected with the p end of three utmost point connector CZ2A, and an end of resistance R 1 is connected with 7 pin with 6 pin of integrated circuit U1, and the other end of resistance R 1 is connected with the N end of three utmost point connector CZ2A.1 pin of integrated circuit U1 is connected with the p end of three utmost point connector CZ2A, and 4 pin of integrated circuit U1,8 pin are connected with the o end of three utmost point connector CZ2A, and 3 pin of integrated circuit U1 are connected with the n end of three utmost point connector CZ2A.One end of resistance R 2 is connected with 3 pin of integrated circuit U1, and the other end of resistance R 2 is connected with the anode of LED, and the negative electrode of LED is connected with the p end of three utmost point connector CZ2A.1 pin of integrated circuit U2,2 pin are connected with the o end of three utmost point connector CZ2A, 3 pin of integrated circuit U2 are connected with the emitter of triode T with the e of microswitch K end, 4 pin of integrated circuit U2 are connected with the base stage of triode T, the collector of triode T is connected with the end of loudspeaker Y, and the other end of loudspeaker Y is connected with the o end of three utmost point connector CZ2A.The two ends of microphone M1 are connected with two ends r, the s of two utmost point connector CZ1A respectively, and two ends g, the h of two utmost point socket CZ1B is connected with the two ends of the microphone M2 of sound-track engraving apparatus L respectively.The negative pole of the direct supply E of sound-track engraving apparatus L is connected with the m end of three utmost point socket CZ2B, and the positive pole of direct supply E is connected with 1 end of three utmost point socket CZ2B.Connecting line sound-track engraving apparatus L and direct supply E positive pole disconnects, and an end of disconnection is connected with the r end with the i end of three utmost point socket CZ2B.Microphone M1, LED and microswitch K are installed in outdoors.
During use, as shown in Figure 1 and Figure 2, two utmost point connector CZ1A are inserted in two utmost point connector mouth CZ1B, microphone M1 just is connected in parallel on the two ends of the microphone M2 on the sound-track engraving apparatus L.Three utmost point connector CZ2A are inserted in three utmost point socket CZ2B, again the record button of sound-track engraving apparatus L is pressed.Because after three utmost point connector CZ2A inserted three utmost point socket CZ2B, the r of three utmost point socket CZ2B end and 1 end disconnected, so the power supply E of sound-track engraving apparatus L does not connect, sound-track engraving apparatus L does not record.When visiting guest pressed microswitch K, e end and f termination were logical, and the negative pole that 2 pin of integrated circuit U1 meet power supply E triggers monostalbe trigger, the 3 pin output high level of integrated circuit U1, and LED is luminous.Simultaneously, integrated circuit U2 gets the electric audio frequency oscillator vibration that makes, and audio frequency oscillator drives loudspeaker Y sounding by triode T.When owner is in, can learn that the guest is visiting by loudspeaker Y sounding, when owner stays out, since when the visiting guest presses microswitch K, 3 pin of integrated circuit U1 output high-voltage flat, and the i end of three utmost point connectors also is a high level, sound-track engraving apparatus L must establish the beginning recording by cable, the visiting guest finds that LED is luminous, illustrates that sound-track engraving apparatus records, and can will leave a message record down by microphone M1.Unclamp microswitch K, d end and e termination are logical, the failure of oscillations of integrated circuit U2 dead electricity, and loudspeaker Y stops sounding.10-15 is after second, and 6 pin of integrated circuit U1 reach trigger voltage because of capacitor C1 goes up charging voltage, and monostalbe trigger is triggered once more, the 3 pin output low levels of integrated circuit U1, and sound-track engraving apparatus L quits work, and LED stops luminous.After owner goes home, pull up three utmost point connector CZ2A, press playback button, can hear visiting guest's message by sound-track engraving apparatus L.
Claims (2)
1, message leaving door bell, it has microswitch (K), monostalbe trigger, audio frequency oscillator, amplifier, loudspeaker (Y), microphone (M
1) and recording and/or reproducing apparatus, it is characterized in that microswitch (K) is connected with audio frequency oscillator with monostalbe trigger, upset of control monostalbe trigger and audio frequency oscillator vibration; The output signal of monostalbe trigger is sent into recording and/or reproducing apparatus, provides working power to recording and/or reproducing apparatus; The output terminal of audio frequency oscillator is connected with amplifier input terminal, and sound signal is sent into amplifier and amplified rear drive loudspeaker (Y) sounding; Microphone (M
1) be connected in parallel on the microphone (M of recording and/or reproducing apparatus
2) two ends; The extension line of the positive pole of the direct supply of recording and/or reproducing apparatus (E) disconnects, and the both positive and negative polarity of direct supply (E) is connected with monostalbe trigger, audio frequency oscillator and amplifier, provides power supply to it.
2, according to the described message leaving door bell of claim 1, it is characterized in that, monostalbe trigger is by integrated circuit (U1), resistance (R1) and capacitor (C) are formed, audio frequency oscillator is made up of integrated circuit (U2), amplifier is made up of triode (T), integrated circuit (U1) adopts NE555, integrated circuit (U2) adopts KD9300, (f) end of microswitch (K) is connected with (o) end with (p) end of three utmost point connectors (CZ2A) respectively with (d) end, (e) end of microswitch (k) is connected with 2 pin of integrated circuit (U1), one end of capacitor (c) is connected with 7 pin with 6 pin of integrated circuit (U1), the other end of capacitor (c) is connected with (P) end of three utmost point connectors (CZ2A), one end of resistance (R1) is connected with 7 pin with 6 pin of integrated circuit (U1), the other end of resistance (R1) is connected with (n) end of three utmost point connectors (CZ2A), 1 pin of integrated circuit (U1) is connected with (P) end of three utmost point connectors (CZ2A), 4 pin of integrated circuit (U1), 8 pin are connected with (o) end of three utmost point connectors (CZ2A), and 3 pin of integrated circuit (U1) are connected with (n) end of three utmost point connectors (CZ2A); 1 pin of integrated circuit (U2), 2 pin are connected with (o) end of three utmost point connectors (CZ2A), 3 pin of integrated circuit (U2) are connected with the emitter of triode (T) with (e) end of microswitch (K), 4 pin of integrated circuit (U2) are connected with the base stage of triode (T), the collector of triode (T) is connected with an end of loudspeaker (Y), and the other end of loudspeaker (Y) is connected with (o) end of three utmost point connectors (CZ2A); The negative pole of the direct supply of recording and/or reproducing apparatus (E) is connected with (m) end of three utmost point sockets (CZ2B), the positive pole of direct supply (E) is connected with (1) end of three utmost point sockets (CZ2B), the connecting line with direct supply (E) positive pole of recording and/or reproducing apparatus disconnects, and an end of disconnection is connected with (r) end with (i) end of three utmost point sockets (CZ2B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93231059 CN2159045Y (en) | 1993-05-29 | 1993-05-29 | Door bell capable of leaving one's comments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93231059 CN2159045Y (en) | 1993-05-29 | 1993-05-29 | Door bell capable of leaving one's comments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2159045Y true CN2159045Y (en) | 1994-03-16 |
Family
ID=33807590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93231059 Expired - Fee Related CN2159045Y (en) | 1993-05-29 | 1993-05-29 | Door bell capable of leaving one's comments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2159045Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110602605A (en) * | 2019-10-11 | 2019-12-20 | 广东美的白色家电技术创新中心有限公司 | Voice switch circuit and voice device |
-
1993
- 1993-05-29 CN CN 93231059 patent/CN2159045Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110602605A (en) * | 2019-10-11 | 2019-12-20 | 广东美的白色家电技术创新中心有限公司 | Voice switch circuit and voice device |
| CN110602605B (en) * | 2019-10-11 | 2024-05-14 | 广东美的白色家电技术创新中心有限公司 | Voice switch circuit and voice equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |