CN2582287Y

CN2582287Y - Speaking alarming device for telling user telephone being not on-hook really

Info

Publication number: CN2582287Y
Application number: CN 02257987
Authority: CN
Inventors: 胡琪创; 王光明
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-25
Filing date: 2002-10-25
Publication date: 2003-10-22
Anticipated expiration: 2012-10-25

Abstract

The utility model makes use of an operating current of a telephone incoming line. An operating voltage on an external line of a telephone office is about 52 volts, and a voltage on the line is from 7 to 12 volts during calling. When a receiver is on-hook after calling, a 52 volts voltage changes to 7 volts through voltage reduction and voltage stabilization by a resistor of the device; an integrated circuit has no reverse voltage now, and therefore, no voltage is output, and a green lamp is light. When the receiver is not on-hook really, the voltage from 7 to 12 volts on the incoming line is again reduced to from 6.7 to 9.1 volts 50 seconds later (the voltage is self controlled by a machine room in a telephone office); now, the voltage on the upper end of the resistor is only half of the input voltage because of set shunting of the resistor; the circuit of the integrated circuit is reversed to output signals to control work of a transistor and work of a voice block; simultaneously, the green lamp is extinguished. The utility model avoids affecting call reception because of being not on-hook really of the receiver, and the telephone is always in a normal working state.

Description

Telephone set is not hung appropriate sound prompt device

Technical field

The utility model relates to the telephone communication suggestion device, and specifically a kind of telephone set is not hung appropriate sound prompt device.

Background technology

At present, no matter main frame or an attaching number extension set are as long as wherein one close and do not hang up properly for wire telephone, and external signal can't enter, so just influence use.

Summary of the invention

The purpose of this utility model then is the problem that exists at above-mentioned prior art, provide a kind of wire telephone conversation oscillating current that utilizes after pause a period of time, transmitter oscillating circuit voltage descends, by the integrated package reverse current, drive the block of speech that is provided with, by the phone loud speaker, send the prompting telephone set and do not hang appropriate sound prompt device.

The purpose of this utility model can reach by following measure:

This device is the operating current that utilizes the phone lead-in, about 52 volts of its outside line operating voltage of telephone office, voltage during conversation on the line is 7 to 12 volts, after the end of conversation receiver is put well, 52 volts of voltage is through the step-down of this device resistance, voltage is 7 volts after voltage stabilizing, this moment, integrated circuit did not have reversal voltage, therefore not output, and green light is bright; If receiver does not hang up properly, 7 to 12 volts of voltages of inlet wire were reduced to 6.7 to 9.1 volts (this voltage is that telephone office's machine room is controlled automatically) again after 50 seconds, this moment is owing to set the shunting of resistance, terminal voltage has only half of input on the resistance, the circuit counter-rotating of integrated circuit, the work of output signal control triode, block of speech work, green light extinguishes simultaneously.

A kind of telephone set is not hung appropriate sound prompt device, it is characterized in that at telephone set inlet wire A, B two ends earlier with capacitor C ₁Connect, after this at A line connecting resistance R ₁, the place is connected resistance R with the B line at a point ₀, thereafter, A, B line-to-line are again with voltage-stabiliser tube W ₁, diode D ₁Linking to each other joins, and the A line connects the ic chip second end pin, divides two ends after ic chip the 7th, the 6th end pin parallel connection, one end series resistor R ₂Connect positive pole, the other end connects capacitor C ₂To negative pole, the ic chip first end pin is connected to negative pole, voltage-stabiliser tube W ₂With capacitor C ₃Back in parallel one end is connected with ic chip five terminal pin, and the other end is connected to the 6V positive pole to negative pole after ic chip the 4th, the 8th end pin parallel connection, lead-out wire elder generation and the LED light-emitting diode and the resistance R of ic chip the 3rd end pin ₃Be connected to the 6V positive pole, ic chip the 3rd end pin is connected in triode V again ₁Collector electrode, its base stage connects block of speech R _L, block of speech R _LThe other end is connected to the 6V positive pole.

Advantage of the present utility model:

This device is receiver not to be hung up properly after conversation so that influence a kind of voice suggestion and signal lamp (green glow) display unit of conversing next time and doing for telephone set, avoids not talked about because of receiver hangs up properly to influence, and makes phone be in normal operating conditions always.This device is main, extension set all can use.It can install this device additional in factory, also can separately this device be connected on the original call machine, increases not on-hook prompt facility.This installation cost is low, is convenient to produce, and can improve telephone functionality preferably.

Description of drawings

Fig. 1 is the utility model electrical schematic diagram.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described:

In the telephone set inlet wire, draw A, B two ends respectively and prolong (the B end is negative pole), earlier with capacitor C ₁Connect, after this at A line connecting resistance R ₁, the place is connected resistance R with the B line at a point ₀, thereafter, A, B line-to-line are again with voltage-stabiliser tube W ₁, diode D ₁Linking to each other joins, and the A line connects ic chip (model is 555) the second end pin, divides two ends after ic chip the 7th, the 6th end pin parallel connection, one end series resistor R ₂Connect positive pole, the other end connects capacitor C ₂To negative pole, the ic chip first end pin is connected to negative pole, voltage-stabiliser tube W ₂With capacitor C ₃Back in parallel one end is connected with ic chip five terminal pin, and the other end is connected to the 6V positive pole to negative pole after ic chip the 4th, the 8th end pin parallel connection, lead-out wire elder generation and the LED light-emitting diode (green glow) and the resistance R of ic chip the 3rd end pin ₃Be connected to the 6V positive pole, ic chip the 3rd end pin is connected in triode V again ₁Collector electrode, its base stage connects block of speech R _L, block of speech R _LThe other end is connected to the 6V positive pole.

Set external power supply is direct current 6V, available layers piezoelectricity pond or No. 7 batteries, and each duty cycle power consumption is few, only is several microamperes.

Claims

1. a telephone set is not hung appropriate sound prompt device, it is characterized in that at telephone set inlet wire A, B two ends earlier with capacitor C ₁Connect, after this at A line connecting resistance R ₁, the place is connected resistance R with the B line at a point ₀, thereafter, A, B line-to-line are again with voltage-stabiliser tube W ₁, diode D ₁Linking to each other joins, and the A line connects the ic chip second end pin, divides two ends after ic chip the 7th, the 6th end pin parallel connection, one end series resistor R ₂Connect positive pole, the other end connects capacitor C ₂To negative pole, the ic chip first end pin is connected to negative pole, voltage-stabiliser tube W ₂With capacitor C ₃Back in parallel one end is connected with ic chip five terminal pin, and the other end is connected to the 6V positive pole to negative pole after ic chip the 4th, the 8th end pin parallel connection, lead-out wire elder generation and the LED light-emitting diode and the resistance R of ic chip the 3rd end pin ₂Be connected to the 6V positive pole, ic chip the 3rd end pin is connected in triode V again ₁Collector electrode, its base stage connects block of speech R _L, block of speech R _LThe other end is connected to the 6V positive pole.