CN2181143Y - Alarm device for telephone when placed on non-right position - Google Patents
Alarm device for telephone when placed on non-right position Download PDFInfo
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- CN2181143Y CN2181143Y CN 94225574 CN94225574U CN2181143Y CN 2181143 Y CN2181143 Y CN 2181143Y CN 94225574 CN94225574 CN 94225574 CN 94225574 U CN94225574 U CN 94225574U CN 2181143 Y CN2181143 Y CN 2181143Y
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- circuit
- resistance
- triode
- voltage stabilizing
- electric capacity
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Abstract
The utility model discloses an alarm device for telephone when placed on non-right position. The alarm device for telephone is composed of a casing and a circuit. The circuit is provided with a polarity converting circuit, a voltage limit circuit, a power supply switching circuit, a voltage-stabilizing circuit, an amplifying circuit, a delay circuit and an alarm circuit. The alarm device for telephone is connected with the telephone line. The alarm device for telephone does not influence the telephone or the line during the using process. When the telephone is placed on non-right position, the alarm device for telephone can remind the user in time. The telephone is more unblocked to use.
Description
The utility model relates to a kind of warning device, especially a kind of receiver-off-hook reminiscences.
At present, phone is more and more universal, is exactly often not get through in the use but exist a problem, and one of them key factor is exactly that the other side does not hang up properly phone.Phone does not hang up properly, and phone can not advance, and the other side worries very much, oneself but has no to discover, and this point is unluckily.The stored-program control exchange that has now, having a kind of function is exactly for the phone that does not hang up properly, send out busy tone earlier, send out 30 seconds higher pedal points of frequency more about, supervising the user to hang up properly phone, but owing to be to utilize phone receiver sounding, loudness is limited, be difficult to be discovered, do not reach and supervise the user to hang up properly the purpose of phone by the user.
The purpose of this utility model is to overcome the defective that prior art exists, and a kind of receiver-off-hook reminiscences is provided, and it can in time be sounded with higher loudness under the situation that subscriber phone does not hang up properly, and reminds the telephone subscriber to hang up properly phone.
The purpose of this utility model realizes as follows: it is made of shell and circuit two parts.Circuit is provided with polarity switching, pressure limiting circuit, power switch circuit, voltage stabilizing circuit, amplifying circuit, delay circuit and warning circuit.Polarity switching is the bridge rectifier that four rectifier diodes constitute.The back level of polarity switching is provided with the pressure limiting circuit of resistance and voltage stabilizing didoe formation, and the resistance one of pressure limiting circuit terminates on the output cathode of polarity switching, connects voltage stabilizing didoe between the other end and the negative pole.The back level that at the two ends of voltage stabilizing didoe is pressure limiting circuit is connected to power switch circuit, power switch circuit is made of three resistance and two triodes, two base biasing resistors that resistance is a triode wherein, another resistance is the load resistance of this triode.Level is connected to voltage stabilizing circuit behind the power switch circuit, and the back level of voltage stabilizing circuit is connected to delay circuit, and it is made of two resistance, an electric capacity, a voltage stabilizing didoe and two triodes.Be connected on after one of them resistance and the capacitances in series between the positive pole and negative pole of voltage stabilizing circuit, the voltage stabilizing didoe positive pole is connected on the central contact of resistance and electric capacity, the voltage stabilizing didoe negative pole is connected on the base stage of one of them triode, and another resistance is that the load resistance of this triode is the base biasing resistor of another triode simultaneously.The back level of delay circuit is connected to warning circuit.Be connected to amplifying circuit between the charging capacitor of pressure limiting circuit and delay circuit.Amplifying circuit is made of an electric capacity, a resistance and a triode, resistance is the base biasing resistor of triode, electric capacity is connected between the positive pole and transistor base of pressure limiting circuit, and the collector electrode of triode and emitter are connected on the two ends up and down of delay circuit charging capacitor respectively.Voltage stabilizing circuit is made of a resistance, a triode and a voltage stabilizing didoe.Warning circuit is made of electric capacity, warning integrated package, triode and loud speaker.
The effect of the utility model receiver-off-hook reminiscences is: in use phone and circuit are not had harmful effect, receiver-off-hook is reminded automatically, makes phone more unimpeded.
Below in conjunction with accompanying drawing receiver-off-hook reminiscences described in the utility model is further described.
Accompanying drawing is the circuit connection diagram of receiver-off-hook reminiscences described in the utility model.
1-binding post 2-binding post 3-rectifier diode
4-rectifier diode 5-rectifier diode 6-rectifier diode 7-resistance
8-voltage stabilizing didoe 9-resistance 10-resistance 11-triode
12-resistance 13-triode 14-resistance 15-triode
16-voltage stabilizing didoe 17-electric capacity 18-resistance 19-triode
20-resistance 21-electric capacity 22-voltage stabilizing didoe 23-triode
24-resistance 25-triode 26-electric capacity 27-warning integrated package
28-triode 29-loud speaker
With reference to accompanying drawing, polarity switching is the bridge rectifier of rectifier diode (3), (4), (5) and (6) composition, input link terminal (1) and (2) of this circuit are used to be attempted by the external call line, needn't distinguish positive and negative electrode during wiring so in use.Be connected to pressure limiting circuit between the positive and negative electrode after the rectification output, pressure limiting circuit is made up of resistance (7) and voltage stabilizing didoe (8), prevents that ringing-current voltage and former feed voltage superposition high pressure or lightning voltage together from damaging the back level at circuit component.The back level of pressure limiting circuit is connected to power switch circuit, this circuit is made up of resistance (9), resistance (10), resistance (12), triode (11) and triode (13), at phone not during off-hook, line fed voltage electromechanical is 60V, and program control type is 48V, by giving triode (11) biasing after resistance (9) and resistance (10) dividing potential drop, make its saturation conduction, make resistance (12) upper end be high voltage, thereby triode (13) is ended, not level power supply backward; During receiver off-book, line fed voltage is because circuit length difference, phone model difference, drop to 8-15V, at this moment the voltage difference at biasing resistor (9) two ends is less than conducting voltage between triode (11) knot, and triode (11) ends, and it is low that resistance (12) is gone up terminal potential, triode (13) saturation conduction, the back level obtains power supply.The back level is connected to voltage stabilizing circuit, voltage stabilizing circuit is made of resistance (14), triode (15) and voltage stabilizing didoe (16), resistance (14) is the biasing resistor of triode (15), electric current is provided for triode (15) base stage, voltage stabilizing didoe (16) provides reference voltage for triode (15) base stage.The back level of voltage stabilizing circuit is connected to delay circuit, and delay circuit is made up of resistance (20), electric capacity (21), voltage stabilizing didoe (22), triode (23), resistance (24) and triode (25).The positive source of voltage stabilizing circuit output charges to electric capacity (21) through resistance (20), when the voltage on the electric capacity (21) rises between the conducting voltage of voltage stabilizing didoe (22) and triode (23) base stage and emitter junction the conducting voltage sum, triode (23) conducting, resistance (24) terminal potential down descends, thereby triode (25) saturation conduction is for back level warning circuit provides power supply.The warning circuit that is connected on level behind the delay circuit is made up of electric capacity (26), warning integrated package (27), triode (28) and loud speaker (29), electric capacity (27) is filter capacitor, triode (28) amplifies alarm signal, warning circuit obtains electricity after triode (25) conducting, send alarm sound.Between pressure limiting circuit and delay circuit, be connected to amplifying circuit, amplifying circuit is by electric capacity (17), resistance (18) and triode (19) constitute, terminate at the output head anode of pressure limiting circuit on the electric capacity (17), the collector electrode of triode (19) connects the upper end of electric capacity (21), resistance (18) is the below-center offset resistance of triode (19), in the time-delay process of delay circuit if obtain voice signal, electric capacity (17) is delivered to triode (19) to the voice signal of circuit and is amplified, make its conducting, discharge the electric charge on the electric capacity (21), promptly the delay circuit zero clearing, the warning circuit of back level can not get electricity and can't work.After receiver-off-hook was reported to the police, if hang up properly phone again, line voltage distribution rose suddenly, and the pulse signal that up voltage forms this on also makes amplifier moment saturated, the residual charge on the delay circuit charging capacitor (21) was bled off, for task is down got ready.
When element is selected for use, voltage stabilizing didoe (16) can be selected 3V for use, voltage stabilizing circuit is exported about 3.6V voltage like this, voltage stabilizing didoe (22) is selected 2.4V for use, when electric capacity (21) powers on voltage rise when the 3V, triode (23) and triode (25) conducting are powered to warning circuit, and the delay time of delay circuit is decided according to resistance (20) and electric capacity (21) parameter selected for use.
The utility model is attempted by terminals (1) and (2) on the telephone wire in use, and under the situation of phone on-hook, line fed voltage 60V or 48V end power switch circuit through polarity switching and pressure limiting circuit, and late-class circuit does not have electricity and do not work.During receiver off-book, line fed voltage drops to 8-15V, power switch circuit work, and level voltage stabilizing circuit power supply backward, after resistance (20) charges to electric capacity (21), start working by timing circuit through voltage stabilizing for power supply.If the other side has the speech of people's off-hook, the voice signal of the other side or this machine discharges the charging charge on the electric capacity (21) after amplifier picks up amplification, and delay circuit can't be connected level power supply backward, and the warning circuit non-transformer is not worked.Do not hang up properly phone if finish after the conversation of this machine, circuit does not still have voice signal again at off hook state and send amplifier, at this moment delay circuit charging capacitor (21) is gone up voltage continuation rising, up to delay circuit backward a level power supply warning circuit obtain electric alarm, if after hanging up properly phone again, the pulse that line fed voltage rises to 60V or 48V formation makes amplifier work, electric capacity (21) is gone up residual charge discharge, and gets ready for time-delay next time.
Claims (3)
1, a kind of receiver-off-hook reminiscences, constitute by shell and circuit two parts, circuit includes polarity switching, pressure limiting circuit, power switch circuit, voltage stabilizing circuit, amplifying circuit, delay circuit and warning circuit are formed, it is characterized in that polarity switching is the bridge rectifier that four rectifier diodes constitute, the back level of polarity switching is provided with the pressure limiting circuit that is made of resistance (7) and voltage stabilizing didoe (8), the resistance (7) one of pressure limiting circuit terminates on the output cathode of polarity switching, be connected to voltage stabilizing didoe (8) between the other end and the negative pole, level is connected to power switch circuit after the two ends of voltage stabilizing didoe (8) are pressure limiting circuit, power switch circuit is by resistance (9), resistance (10), resistance (12), triode (11) and triode (13) constitute, resistance (9) and resistance (10) are the biasing resistor of triode (11), resistance (12) is load resistance, level is connected to voltage stabilizing circuit behind the power switch circuit, level is connected to delay circuit behind the voltage stabilizing circuit, described delay circuit is by resistance (20), electric capacity (21), voltage stabilizing didoe (22), resistance (24), triode (23) and triode (25) are formed, be connected between the positive pole and negative pole of voltage stabilizing circuit after resistance (20) and electric capacity (21) series connection, voltage stabilizing didoe (22) positive pole is connected on the contact of resistance (20) and electric capacity (21), negative pole is connected on the base stage of triode (23), resistance (24) is that the load resistance of triode is the base biasing resistor of triode (25) simultaneously, the back level of delay circuit is connected to warning circuit, the charging capacitor of pressure limiting circuit and delay circuit is connected to amplifying circuit between (21), amplifying circuit is by electric capacity (17), resistance (18) and triode (19) constitute, resistance (18) is the base biasing resistor of triode (19), electric capacity (17) is connected between the positive pole and triode (19) base stage of pressure limiting circuit, and the collector electrode of triode (19) and emitter are connected on the two ends up and down of electric capacity (21) respectively.
2, receiver-off-hook reminiscences according to claim 1 is characterized in that voltage stabilizing circuit is made of resistance (14), triode (15) and voltage stabilizing didoe (16).
3, receiver-off-hook reminiscences according to claim 1 and 2 is characterized in that warning circuit is made of electric capacity (26), warning integrated package (27), triode (28) and loud speaker (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94225574 CN2181143Y (en) | 1994-01-09 | 1994-01-09 | Alarm device for telephone when placed on non-right position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94225574 CN2181143Y (en) | 1994-01-09 | 1994-01-09 | Alarm device for telephone when placed on non-right position |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2181143Y true CN2181143Y (en) | 1994-10-26 |
Family
ID=33838736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94225574 Expired - Fee Related CN2181143Y (en) | 1994-01-09 | 1994-01-09 | Alarm device for telephone when placed on non-right position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2181143Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103581449A (en) * | 2013-10-10 | 2014-02-12 | 中国船舶重工集团公司第七二二研究所 | Analog phone access equipment |
| CN104092819A (en) * | 2014-06-17 | 2014-10-08 | 高彦博 | Telephone set special used for old people |
-
1994
- 1994-01-09 CN CN 94225574 patent/CN2181143Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103581449A (en) * | 2013-10-10 | 2014-02-12 | 中国船舶重工集团公司第七二二研究所 | Analog phone access equipment |
| CN103581449B (en) * | 2013-10-10 | 2016-02-10 | 中国船舶重工集团公司第七二二研究所 | A kind of analog telephone access device |
| 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 |