CN201032730Y - Intercommunication door bell appended message-leaving circuit - Google Patents
Intercommunication door bell appended message-leaving circuit Download PDFInfo
- Publication number
- CN201032730Y CN201032730Y CNU2007200184994U CN200720018499U CN201032730Y CN 201032730 Y CN201032730 Y CN 201032730Y CN U2007200184994 U CNU2007200184994 U CN U2007200184994U CN 200720018499 U CN200720018499 U CN 200720018499U CN 201032730 Y CN201032730 Y CN 201032730Y
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- China
- Prior art keywords
- circuit
- indoor
- outdoor
- loudspeaker
- resistance
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Abstract
The utility model relates to an intercom doorbell circuit, a message circuit is added in the intercom doorbell. The technical proposal is that the utility model comprises an indoor loudspeaker 3, an indoor mike 4, an outdoor loudspeaker 5, an outdoor mike 6 and a doorbell button 7. When the utility model is improved, a time lag trigger circuit which comprises a resistance R1, a resistance R2, a resistance R3, a capacitance C1, a capacitance C2 and a dynatron BG is added; a timing circuit which comprises a time base circuit IC1, a resistance R4, a capacitance C3 and a capacitance C4 is also added. A relay J is connected with IC1, and a contact J1 and J2 are connected with a voice piece IC2 and a recording circuit IC3; the outdoor loudspeaker 5 is connected with the voice chip IC2; the indoor loudspeaker 3, the indoor mike 4 and the outdoor mike 6 are connected with the recording circuit IC3; and a diode D is parallel connected on the two ends of the relay J. The utility model has the advantages of simple structure and convenient embedding, when the message circuit is assembled in the intercom doorbell of the security door, the information of the visitors is able to be recorded momentarily.
Description
Technical field
The utility model relates to the entryphone circuit, specifically is the additional message of entryphone circuit.
Background technology
Present family's entryphone is mainly by interior circuit 1, outdoor circuit 2, and indoor loudspeaker 3, indoor microphone 4, outdoor loudspeaker 5, outdoor microphone 6, doorbell knob 7 is formed (with reference to accompanying drawing 2), does not have message-leaving function, when owner stays out, can't learn guest's information.
Summary of the invention
The purpose of this utility model is exactly the defective that exists at prior art, and a kind of additional message of the entryphone circuit that can leave and take guest's information is provided.
Its technical scheme is: comprise indoor loudspeaker 3, indoor microphone 4, outdoor loudspeaker 5, outdoor microphone 6, doorbell knob 7 is formed basic doorbell circuit, increased by resistance R 1, R2, R3, capacitor C 1, C2, triode BG after it improves and formed delay trigger circuit, formed timing circuit by time-base circuit IC1, resistance R 4, capacitor C 3, C4; Relay J is connected to IC1, contact J1, J2 connect voice sheet IC2, recording circuit IC3.Outdoor loudspeaker 5 are connected speech chip IC2, and indoor loudspeaker 3, indoor microphone 4, outdoor microphone 6 all are connected recording circuit IC3.At the two ends of relay J parallel diode D.
The utlity model has simple in structure, install additional conveniently, be installed on the antitheft door entryphone, can write down the information that the guest stays at any time.
Description of drawings
The circuit diagram of accompanying drawing 1 a kind of embodiment of the present utility model.
Accompanying drawing 2 is basic circuit diagrams of existing entryphone.
Embodiment
Be further described with regard to its operation principle below in conjunction with accompanying drawing:
With reference to accompanying drawing 1, the base stage and the indoor loudspeaker 3 that connect capacitor C 1, triode BG by resistance R 1, R2 connects the collector electrode of capacitor C 2, triode BG, R3 connects capacitor C 2 and time-base circuit IC1 forms delay trigger circuit, connects resistance R 4, capacitor C 3, C4 and relay J by time-base circuit IC1 and forms timing circuit; A point junction chamber inside trumpet 3 is as triggering signal.Contact J1, the J2 of relay J controls voice sheet IC2, recording circuit IC3 respectively.The length of the timing circuit effector record length that IC1 etc. form is so that on-hook in time.
Claims (2)
1. entryphone adds the message circuit, comprise indoor loudspeaker (3), indoor microphone (4), outdoor loudspeaker (5), outdoor microphone (6), doorbell knob (7) is formed basic doorbell circuit, it is characterized in that also comprising: connect to form delay trigger circuit by resistance (R1, R2, R3), electric capacity (C1, C2), triode (BG), connect to form timing circuit by time-base circuit (IC1), resistance (R4), electric capacity (C3, C4); Relay (J) is connected to (IC1), two contacts (J1, J2) connect respectively on voice sheet (IC2), the recording circuit (IC3), outdoor loudspeaker (5) are connected speech chip (IC2), and indoor loudspeaker (3), indoor microphone (4), outdoor microphone (6) all are connected recording circuit (IC3).
2. the additional message of entryphone according to claim 1 circuit is characterized in that: at the two ends parallel diode (D) of relay (J).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200184994U CN201032730Y (en) | 2007-02-07 | 2007-02-07 | Intercommunication door bell appended message-leaving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200184994U CN201032730Y (en) | 2007-02-07 | 2007-02-07 | Intercommunication door bell appended message-leaving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201032730Y true CN201032730Y (en) | 2008-03-05 |
Family
ID=39164616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200184994U Expired - Fee Related CN201032730Y (en) | 2007-02-07 | 2007-02-07 | Intercommunication door bell appended message-leaving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201032730Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944260A (en) * | 2010-09-07 | 2011-01-12 | 南京信息工程大学 | Recording doorbell based on singlechip |
| CN102074084A (en) * | 2011-01-18 | 2011-05-25 | 朱虹 | Ding-dong doorbell manufactured by time-based integral circuit |
-
2007
- 2007-02-07 CN CNU2007200184994U patent/CN201032730Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944260A (en) * | 2010-09-07 | 2011-01-12 | 南京信息工程大学 | Recording doorbell based on singlechip |
| CN102074084A (en) * | 2011-01-18 | 2011-05-25 | 朱虹 | Ding-dong doorbell manufactured by time-based integral circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080305 |