CN2745290Y - Telephone transmitter reset alarm - Google Patents
Telephone transmitter reset alarm Download PDFInfo
- Publication number
- CN2745290Y CN2745290Y CN 200420111460 CN200420111460U CN2745290Y CN 2745290 Y CN2745290 Y CN 2745290Y CN 200420111460 CN200420111460 CN 200420111460 CN 200420111460 U CN200420111460 U CN 200420111460U CN 2745290 Y CN2745290 Y CN 2745290Y
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- CN
- China
- Prior art keywords
- alarm
- circuit
- telephone
- telephone transmitter
- triode
- Prior art date
- 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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- Monitoring And Testing Of Exchanges (AREA)
Abstract
The utility model discloses a telephone transmitter reset alarm. An automatic detection circuit and an alarm cue circuit are arranged inside a telephone set, and then are connected to the polarity switching circuit of the telephone set. The automatic detection circuit is formed by transistors Q1, Q2, Q3 which are connected orderly; the alarm cue circuit is composed of a music IC and a transistor Q4 which are connected with each other. When a telephone transmitter is reset normally, the telephone transmitter reset alarm dose not work; when the telephone transmitter is not kept in place, the telephone transmitter reset alarm triggers the alarm circuit after the conversation is end for a while to prompt that the telephone transmitter is not kept in place; when the telephone transmitter is hung on the alarm sound is closed.
Description
Technical field
The utility model relates to a kind of telephone microphone alarm that resets.
Background technology
In daily life, usually run into telephone receiving intact after, put conveniently on one side, or receiver situation about not putting well.
Summary of the invention
The purpose of this utility model is exactly the shortcoming that overcomes prior art, and a kind of telephone microphone alarm that resets is provided, and solves the reset issues of telephone receiver.
The purpose of this utility model is achieved in that a kind of telephone microphone alarm that resets, automatic testing circuit is set in telephone set to be connected with telephone set polarity switched circuit with the alarm circuit, automatically testing circuit is linked in sequence by triode Q1, Q2, Q3 and forms, and the alarm circuit is formed by connecting by music IC and triode Q4.
Owing to adopt said structure, the utility model when receiver is not put well, triggers warning circuit when the receiver Shi Buhui work that normally resets behind the other side's end of conversation certain hour, and the prompting receiver is not put well.
Description of drawings
Be described further below in conjunction with drawings and Examples.
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 1 double as Figure of abstract.
Embodiment
As shown in the figure, a kind of telephone microphone alarm that resets, automatic testing circuit and alarm circuit are set in telephone set, be connected with telephone set polarity switched circuit, automatically testing circuit is linked in sequence by triode Q1, Q2, Q3 and forms, and the alarm circuit is formed by connecting by music IC and triode Q4.
Operation principle is as follows: in on-hook just or communication process, resistance R 1 place is a high voltage, triode Q1 conducting this moment, make also conducting of Q2, triode Q3 ends, music IC non-transformer, triggering signal is sounding not, does not dial or end of conversation the other side on-hook side not under the situation of on-hook in off-hook a period of time, after busy-back signal stops, resistance R 1 place is a low-voltage, and triode Q1, Q2 end, and the Q2 current collection is very high, triode Q3 conducting, music IC obtains the 3V power supply, and triggering signal is sent chimes of doom, the prompting receiver-off-hook.After hanging up receiver, switch hook K1 disconnects, and the 7V power supply disappears in the telephone set, and triode Q3 ends, and chimes of doom is closed.
Claims (1)
1, a kind of telephone microphone alarm that resets, it is characterized in that: automatic testing circuit is set in telephone set is connected with telephone set polarity switched circuit with the alarm circuit, automatically testing circuit is linked in sequence by triode Q1, Q2, Q3 and forms, and the alarm circuit is formed by connecting by music IC and triode Q4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420111460 CN2745290Y (en) | 2004-11-18 | 2004-11-18 | Telephone transmitter reset alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420111460 CN2745290Y (en) | 2004-11-18 | 2004-11-18 | Telephone transmitter reset alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2745290Y true CN2745290Y (en) | 2005-12-07 |
Family
ID=35580065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420111460 Expired - Fee Related CN2745290Y (en) | 2004-11-18 | 2004-11-18 | Telephone transmitter reset alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2745290Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101796799B (en) * | 2007-09-04 | 2013-05-01 | 西门子企业通讯有限责任两合公司 | Method and communication terminal for detecting the status of a telephone receiver |
| CN104092819A (en) * | 2014-06-17 | 2014-10-08 | 高彦博 | Telephone set special used for old people |
-
2004
- 2004-11-18 CN CN 200420111460 patent/CN2745290Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101796799B (en) * | 2007-09-04 | 2013-05-01 | 西门子企业通讯有限责任两合公司 | Method and communication terminal for detecting the status of a telephone receiver |
| CN104092819A (en) * | 2014-06-17 | 2014-10-08 | 高彦博 | Telephone set special used for old people |
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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 |