CN2179671Y

CN2179671Y - Automatic telephone resetting device

Info

Publication number: CN2179671Y
Application number: CN 93241282
Authority: CN
Inventors: 柴克敏
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-10-06
Filing date: 1993-10-06
Publication date: 1994-10-12
Anticipated expiration: 2003-10-06

Abstract

The utility model provides an automatic telephone resetting device, which connects two automatic single machines with different telephone numbers on a pair of circuits to carry out dialing, talking and ringing, and the numbers are for special purpose of users. The utility model is composed of a telephone exchange terminal and a user terminal, and has the advantages of simple circuits and small size. The utility model does not have high requirements to the existing exchangers and user installation, and can be assembled with various advanced telephone equipment. The utility model can be widely applied to urban and mountain area, and is in ideal communication energy-saving device.

Description

Automatic telephone resetting device

The utility model relates to a kind of phone restorer, and particularly a kind of automatic unit with two different telephone numbers is connected on a pair of circuit and dials, speech, ring and number are the automatic telephone restorer of user's special use.

At present, crank has progressively been got rid of in most of small and medium-sized cities, vast rural telephone system communication, has realized communication automation system and semi-automation, along with developing rapidly of telecommunications, still do not satisfy growing telephone subscriber's demand, its subject matter is the circuit anxiety, if set up a circuit at least several ten thousand yuan, both be to use the local telephone network single-channel carrier also thousands of units, and the circuit complexity, the specification requirement height is safeguarded inconvenience, make it the cost height, utilance is low.

The purpose of this utility model is: the construction of line in addition not, do not change under the prerequisite of existing switch and user's unit and power supply, and it is low that a kind of cost is set, automatic telephone restorer easy to install.

The utility model is done in such a way that it is made up of exchange end and user side two parts, and the exchange end is installed in switch on one side, is made of rectification circuit, delay circuit, interlocking, amplifying circuit and change-over circuit; User side is installed in user's unit on one side, is made of a minute power transformation road.Like this, can constitute a kind of automatic telephone restorer.

Below in conjunction with accompanying drawing and implement one the example the utility model is described in further detail.

Fig. 1 is a circuit block diagram of the present utility model.

Fig. 2 is the circuit theory diagrams of Fig. 1.

As shown in Figure 1, 2, the utility model is dimerous by exchange end (1) and user side (2), exchange end (1) is drawn A respectively, the B line directly is connected with switch, it is to be made of rectification circuit (3), delay circuit (4), interlocking amplifying circuit (5) and change-over circuit (6), and rectification circuit (3) is by diode D ₁D ₃Constitute, delay circuit (4) is respectively by piezo-resistance R ₁, R ₅, capacitor C ₁, C ₃And resistance R ₂, R ₃, R ₄, R ₆, R ₇, R ₈Constitute, interlocking, amplifying circuit (5) are by diode D ₂, D ₄, triode BG ₁, BG ₂, integrated circuit block IC ₁, IC ₂, capacitor C ₂, C ₄Constitute, change-over circuit (6) is by relay J ₁, J ₂And diode D ₅, D ₆Constitute; User side (2) is also drawn a respectively, the b line directly singly is connected with the user, and it is to be made of minute power transformation road (7), and dividing power transformation road (7) is by diode D ₇, D ₈, D ₉, D ₁₀Be formed in parallel.

When party A-subscriber's line of exchange end (1) was called out, the local telephone network bell signal was through rectification circuit (3) diode D ₁After the rectification, interrupted bell signal is delivered to change-over circuit (6) relay J ₁, the bell signal of 90V punctures the piezo-resistance R of delay circuit (4) simultaneously ₁, make capacitor C ₁Charging, its signal is again through resistance R ₂, R ₃Send into interlocking, amplifying circuit (5), triode BG this moment after the current limliting ₁With integrated circuit block IC ₁Conducting is amplified, relay J ₁Action, the contact conversion, the adhesive of moving point, party A-subscriber's line and outside line are connected, and bell signal will flow to the diode D of user side (2) by outside line ₇, D ₈Send into a line phone after dividing change.Party B-subscriber's line is identical therewith.

When a line phone of user side (2) was breathed out, then exchange end (1) passed through relay J ₁The AC signal that two contacts are sent here makes diode D ₂Luminous conducting, capacitor C ₂Charging, relay J ₁Action, the contact conversion, the adhesive of moving point, this moment, a line phone is connected through outside line and party A-subscriber's line.B line phone is identical therewith.

When a line phone was worked, b line phone bell signal is diode D in the interlocking of exchange end (1), amplifying circuit (5) ₃Its signal can not be entered in the amplifying circuit of party B-subscriber's line go the relay J of change-over circuit (6) ₂Can not inhale, the interlocking of b line phone is not worked.

The utility model circuit is simple, and volume is gently little, and is less demanding to existing switch and user installation, can assemble with various advanced telephone plants, extensively is adapted to city, mountain area, is a kind of comparatively desirable communication energy saver.

Claims

1, a kind of by exchange end (1) and user side (2) automatic telephone restorer dimerous, it is to be made of rectification circuit (3), delay circuit (4) interlocking, amplifying circuit (5) and change-over circuit (6) to it is characterized in that exchange end (1), and draw A respectively, the B line directly is connected with switch, user side (2) is to be made of minute power transformation road (7), and also draw a respectively, the b line directly is connected with user's unit.

2, automatic telephone restorer according to claim 1 is characterized in that the rectification circuit (3) of exchange end (1) is by diode D ₁, D ₃Constitute, delay circuit (4) is by piezo-resistance R ₁, R ₅, capacitor C ₁, C ₃And resistance R ₂, R ₃, R ₄, R ₆, R ₇, R ₈Constitute, interlocking amplifying circuit (5) is by diode D ₂, D ₄, triode BG ₁, BG ₂, integrated circuit block IC ₁, IC ₂, capacitor C ₂, C ₄Constitute, change-over circuit (6) is by relay J ₁, J ₂And diode D ₅, D ₆Constitute.

3, automatic telephone restorer according to claim 1 is characterized in that the branch power transformation road (7) of user side (2) is by diode D ₇, D ₈, D ₉, D ₁₀Constitute.