CN2238511Y - Terminal box for program control telephone set - Google Patents
Terminal box for program control telephone set Download PDFInfo
- Publication number
- CN2238511Y CN2238511Y CN 95230340 CN95230340U CN2238511Y CN 2238511 Y CN2238511 Y CN 2238511Y CN 95230340 CN95230340 CN 95230340 CN 95230340 U CN95230340 U CN 95230340U CN 2238511 Y CN2238511 Y CN 2238511Y
- Authority
- CN
- China
- Prior art keywords
- led
- connect
- circuit
- negative pole
- resistance
- 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
Links
Images
Landscapes
- Telephone Set Structure (AREA)
- Telephone Function (AREA)
Abstract
The utility model relates to the connection device of a program control telephone set; the upper part of a connection box is provided with a talking indicator light, the normal indicator light of an external circuit, and the alarm indicator lamp of illegal connection. A sampling circuit, a comparison circuit, a voltage stabilizing circuit, a displaying alarm circuit and a judge circuit are arranged at an inner box. The utility model can display whether the external circuit is normal or not, talking on the telephone, or whether the extension is illegally connected by someone and stops the illegal connection extension from calling. The utility model has the advantages of simple structure, convenient installation, low cost, visual display, etc., and is suitable for various program control telephones.
Description
The utility model relates to the program-controlled telephone jockey.
The career development of China's communication in recent years is rapid, and civilian phone is in the ascendant to be popularized to family.Present telephone connect wire box has only the outside line of connection and phone function, can not satisfy the demand.Along with increasing considerably of user, the phenomenon of stealing the extension telephoning illegally also happens occasionally, and usually therefore causes the contradiction between innings side and the user.
The purpose of this utility model is: provide a kind of simple in structure, easy for installation, can circuit whether normally, whether in conversation, prevent to steal the multiprogrammability telephone connect wire box that connects.
The utility model is provided with In-use indicator, the normal indicator light of external circuit in shell upper, steals device indicator light taking alarm; Circuit is set in inner box, and its outside line input cathode connects resistance R
2, three terminal regulator one end, triode T
1Emitter, resistance R
4The input light-emitting diode of an end, photoelectric coupling circuit anodal with transistor emitter, diode D
1Negative pole, triode T
2Emitter, LED
3Negative pole connect the negative pole of photoelectric coupling circuit light-emitting diode, D
1Positive pole connect LED
3Negative pole, a binding post of phone, R
2The other end connect resistance R
1An end, T
1Base stage, T
1Collector electrode connect resistance R
3An end, photoelectric coupling circuit in collector electrode, the T of triode
2Base stage, T
2Collector electrode connect LED
2Positive pole, LED
2Negative pole connect an end of music integrated chip, the other end of music integrated chip connects LED
1Negative pole, R
3The other end, the output of three terminal regulator, R
4The other end connect LED
1Positive pole, R
1The other end be connected input, outside line positive pole, another input terminal of phone of three terminal regulator with the swing arm end.
The utlity model has simple in structure, easy for installation, cost is low, intuitive display, prevent to steal advantages such as extension.
Accompanying drawing 1 is a contour structures schematic diagram of the present utility model;
Accompanying drawing 2 is inner box structural representations of the present utility model;
Accompanying drawing 3 is electrical schematic diagrams of the present utility model.
In shell upper In-use indicator (3), the normal indicator light of external circuit (4) are set, steal indicator light taking alarm (5), inner box (6) is set in shell (1), by being fastenedly connected that screw (1) connects and external connection; Its outside line input cathode connects resistance R
2, three terminal regulator one end, triode T
1Emitter, resistance R
4The input light-emitting diode of an end, photoelectric coupling circuit anodal with transistor emitter, diode D
1Negative pole, triode T
2Emitter, LED
3Negative pole connect the negative pole of photoelectric coupling circuit light-emitting diode, D
1Positive pole connect LED
3Negative pole, a binding post of phone, R
2The other end connect resistance R
1An end, T
1Base stage, T
1Collector electrode connect resistance R
3An end, photoelectric coupling circuit in collector electrode, the T of triode
2Base stage, T
2Collector electrode connect LED
2Positive pole, LED
2Negative pole connect an end of music integrated chip, the other end of music integrated chip connects LED
1Negative pole, R
3The other end, the output of three terminal regulator, R
4The other end connect LED
1Positive pole, R
1The other end be connected input, outside line positive terminal, another input terminal of phone of three terminal regulator with the swing arm end.
In the circuit: R
1: 150K Ω 1/8W; R
2: 12K Ω is adjustable; R
3: 30K Ω 1/8W; R
4: 1K Ω 1/8W; T
1T
2: 3DG6B; LED
1~LED
3: ∮ 3, ∮ 5 light-emitting diodes, (operating voltage 3V); Three terminal regulator: 7805; Photoelectric coupling circuit: TIL113; D
1: IN4001; Music integrated chip: KD-152.
The utility model is to utilize online program-controlled telephone to drop to characteristic about 8V about dialing and when conversation outside line direct voltage are by 52V, adopt the two poles of the earth triode inverter to control Display and Alarm Circuit and outside line, extension set Display and Alarm Circuit work when telephoning illegally that its robber is connect, light-emitting diode is lighted, the extension set of music integrated circuit in outside line sends music alarm makes outside line constitute loop simultaneously, the dialing signal of stealing extension is sent out do not gone out.And this machine is when making a phone call, and forces not by decision circuitry that utmost point triode inverter ends, and causes Display and Alarm Circuit not worked, thus the transmitting-receiving phone that this machine can be freely.
By resistance R
1And R
2Series connection constitutes sample circuit, is connected on respectively on the positive and negative terminal of outside line, and wherein the A current potential of ordering is lower than 0.6V when outside line voltage is lower than 8V.
Three terminal regulator constitutes voltage stabilizing circuit, to guarantee that operating voltage is at+5V.
T
1And R
3Constitute comparison circuit, its effect is that A point current potential is anti-phase, when promptly A point current potential is lower than 0.6V, and T
1Collector potential be high potential.
By LED
1, LED
2, resistance R
4, triode T
2, music integrated chip KD-152 forms Display and Alarm Circuit.Its LED
1Through the pressure limiting resistance R
4Be connected with power positive cathode and show that localpower is working properly.Triode T
2Base stage meet T
1Collector electrode B point, emitter connects the negative pole of power supply, collector electrode C point is through music integrated chip KD-152 and LED
2Be in series with+5V, constitute the Display and Alarm Circuit of stealing extension, when the people stole the extension telephoning illegally, A point current potential was lower than 0.6V, T
1End, B point current potential rises and is higher than 0.6V, makes T
2Conducting, the C point is an electronegative potential, at this moment KD-152 and LED
2In electric current is arranged by starting working, KD-152 steals extension to outside line and sends music with announcements of warning when stealing indicator light taking alarm (5) and lighting, outside line this moment formation loop, the outside dialing of extension set can't be carried out, and prevents to steal the purpose that connects telephoning illegally thereby reach.
Photoelectric coupling circuit, LED
3And D
1Constitute decision circuitry, photoelectric coupling circuit, LED when making the conversation of this machine
3Work, LED
3Light.Show that this machine converses, the photodiode conducting in this moment photoelectric coupling circuit forces the decline of B point current potential, T
2End, cause Display and Alarm Circuit to quit work, externally conversation is unaffected to make this machine.
Claims (1)
1, a kind of multiprogrammability telephone connect wire box, it comprises shell, is fastenedly connected screw, inner box, it is characterized in that: be provided with In-use indicator, the normal indicator light of external circuit, steal indicator light taking alarm in shell upper; Circuit is set in inner box, and its outside line input cathode connects resistance R
2, three terminal regulator one end, triode T
1Emitter, resistance R
4The input light-emitting diode of an end, photoelectric coupling circuit anodal with transistor emitter, diode D
1Negative pole, triode T
2Emitter, LED
3Negative pole connect the negative pole of photoelectric coupling circuit light-emitting diode, D
1Positive pole connect LED
3Negative pole, a binding post of phone, R
2The other end connect resistance R
1An end, T
1Base stage, T
1Collector electrode connect resistance R
3An end, photoelectric coupling circuit in collector electrode, the T of triode
2Base stage, T
2Collector electrode connect LED
2Positive pole, LED
2Negative pole connect an end of music integrated chip, the other end of music integrated chip connects LED
1Negative pole, R
3The other end, the output of three terminal regulator, R
4The other end connect LED
1Positive pole, R
1The other end be connected input, outside line positive pole, another input terminal of phone of three terminal regulator with the swing arm end.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 95230340 CN2238511Y (en) | 1995-03-13 | 1995-03-13 | Terminal box for program control telephone set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 95230340 CN2238511Y (en) | 1995-03-13 | 1995-03-13 | Terminal box for program control telephone set |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2238511Y true CN2238511Y (en) | 1996-10-23 |
Family
ID=33875206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 95230340 Expired - Fee Related CN2238511Y (en) | 1995-03-13 | 1995-03-13 | Terminal box for program control telephone set |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2238511Y (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10131040B2 (en) | 2010-05-06 | 2018-11-20 | Eca Medical Instruments | Cannulated ultra high torque device |
US10279146B2 (en) | 2015-06-02 | 2019-05-07 | Eca Medical Instruments | Cannulated disposable torque limiting device with plastic shaft |
-
1995
- 1995-03-13 CN CN 95230340 patent/CN2238511Y/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10131040B2 (en) | 2010-05-06 | 2018-11-20 | Eca Medical Instruments | Cannulated ultra high torque device |
US10279146B2 (en) | 2015-06-02 | 2019-05-07 | Eca Medical Instruments | Cannulated disposable torque limiting device with plastic shaft |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN201636799U (en) | Microwave sensing auto-light | |
CN2238511Y (en) | Terminal box for program control telephone set | |
CN211321244U (en) | Circuit for changing vibration intensity of motor | |
CN2806974Y (en) | Automatic lighting lamp for telephone | |
CN2449404Y (en) | DC/ac plantom power source | |
CN205584307U (en) | Phone remote control device | |
CN2177309Y (en) | Anti-theft alarm for telephone | |
CN2205085Y (en) | Telephone alarm against illegal use | |
CN2566563Y (en) | Multifunctional external mounted intelligent acousto-optic calling prompting device | |
CN211063757U (en) | Conference microphone | |
CN209320883U (en) | A kind of vehicle mounted MP 3 circuit | |
CN2494582Y (en) | Theftproof mobile phone cover | |
CN2205614Y (en) | Automatic telephone line anti-theft alarm junction box | |
CN2279038Y (en) | Intelligent connector box for preventing fraudulent calling | |
CN2171954Y (en) | Anti-theft siren for telephone | |
CN2265041Y (en) | Theft-proof protector for telephone line | |
CN2884285Y (en) | Mobile electronic device able to control brightness of light source | |
CN2235683Y (en) | Telephone connection box with anti-fraudulent use function | |
CN2230067Y (en) | Telephone set capable of preventing outside line from being stolen | |
CN2161028Y (en) | Ringing audiovolume auto-step-increased telephone | |
CN2201759Y (en) | Anti-theft device for telephone line | |
CN2222414Y (en) | Telephone arrangement for preventing eavesdropping | |
CN2163491Y (en) | Telephone anti-theft alarm | |
CN2161001Y (en) | Remote signalling sensing socket | |
CN2636552Y (en) | Moving decorative article having induction mobile telephone incoming call signal |
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 |