CN2238511Y - Terminal box for program control telephone set - Google Patents

Terminal box for program control telephone set Download PDF

Info

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
Application number
CN 95230340
Other languages
Chinese (zh)
Inventor
李东明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN 95230340 priority Critical patent/CN2238511Y/en
Application granted granted Critical
Publication of CN2238511Y publication Critical patent/CN2238511Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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 multiprogrammability telephone connect wire box
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.
CN 95230340 1995-03-13 1995-03-13 Terminal box for program control telephone set Expired - Fee Related CN2238511Y (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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