CN107659737A - A kind of phone branch means - Google Patents
A kind of phone branch means Download PDFInfo
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- CN107659737A CN107659737A CN201611139878.9A CN201611139878A CN107659737A CN 107659737 A CN107659737 A CN 107659737A CN 201611139878 A CN201611139878 A CN 201611139878A CN 107659737 A CN107659737 A CN 107659737A
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- resistance
- telephone set
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/005—Interface circuits for subscriber lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/001—Current supply source at the exchanger providing current to substations
- H04M19/005—Feeding arrangements without the use of line transformers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Telephonic Communication Services (AREA)
Abstract
The invention belongs to telephone communicating technology field, there is provided a kind of phone branch means.The phone branch means are connected with exchange line, the first telephone set and the second telephone set, and it includes the first unilateal conduction device, first voltage follows module, the second unilateal conduction device and second voltage follow module.Phone branch means in the present invention by the first unilateal conduction device, the second unilateal conduction device, first voltage follow module and second voltage follows the electric feed signal that module can export exchange line either bell signal is transferred to the first telephone set or the second telephone set with relatively low voltage loss and power attenuation, realize the low purpose low with power attenuation of voltage loss, and the phone branch means are simple in construction, and production cost is low.Therefore, the voltage loss of the phone branch means in the present invention and power attenuation are low, and production cost is low.
Description
Technical field
The invention belongs to telephone communicating technology field, more particularly to a kind of phone branch means.
Background technology
Bell signal in telephone exchange is to be sent to the high voltage of called phone machine, low-frequency exchange letter by interchanger
Number.In order that obtaining called phone machine has the ring sound of enough loudness, typically require that the voltage of bell signal must be sufficiently high.Mesh
Before, the voltage of the bell signal of bell signal source output is generally 30V -90V, frequency 25Hz.
In order to connect two telephone sets on a telephone line, telephone distribution box arises at the historic moment.Phone point
Line box is widely applied as connection interchanger and " bridge " of telephone set in field of telephone communication.But existing electricity
Talk about that electronic device in junction box is more and complex circuit, at the same also need to larger bell signal by could phone shake
Bell, thus cause the circuit design cost of existing telephone distribution box higher, and voltage loss and power attenuation are larger.
Therefore, there is voltage loss in the circuit of existing phone separated time and power attenuation is big and the problem of cost is high.
The content of the invention
The present invention provides a kind of phone branch means, it is intended to solves voltage loss existing for the circuit of existing phone separated time
It is big and the problem of cost is high with power attenuation.
The present invention is achieved in that a kind of phone branch means, connects with exchange line, the first telephone set and the second telephone set
Connect, the phone branch means include：
First unilateal conduction device, first voltage follow module, the second unilateal conduction device and second voltage to follow module；
The input of the first unilateal conduction device, the first voltage follow the controlled end of module and second electricity
Pressure follows the output end of module to connect the first output end of the exchange line and the loop end of second telephone set jointly, and described the
The input of two unilateal conduction devices, the first voltage follow the output end of module and the second voltage follow module by
Control end connects the second output end of the exchange line and the loop end of first telephone set, the first unilateal conduction device jointly
Output end and the first voltage follow the input of module to be connected to the input of first telephone set altogether, described second is single
The input of module is followed to be connected to the input of second telephone set altogether to output end and the second voltage of conductive devices；
When the first output end of the exchange line and the second output end output feedforward signal, first unilateal conduction
Break-over of device so that first phones work, meanwhile, the second unilateal conduction device shut-off, the first voltage follow
Module and the second voltage follow module from service；When the first output end of the exchange line and the output of the second output end are reverse
During electric feed signal, the second unilateal conduction break-over of device so that second phones work, meanwhile, described first unidirectionally leads
Electrical part shut-off, the first voltage follow module and second voltage to follow module from service；
When the first output end of the exchange line and the second output end output positive voltage bell signal, described first unidirectionally leads
Electrical part turns on, and the first voltage follows module that the positive voltage bell signal is transferred into first telephone set, meanwhile,
The second unilateal conduction device shut-off, the second voltage follow module from service；When the first output end of the exchange line
When exporting negative voltage bell signal with the second output end, the second unilateal conduction break-over of device, the second voltage follows mould
The negative voltage bell signal is transferred to second telephone set by block, meanwhile, the first unilateal conduction device shut-off is described
First voltage follows module from service.
In the present invention, phone branch means can pass through the first unilateal conduction device, the second unilateal conduction device, first
Voltage follow module and second voltage follow the electric feed signal that module exports exchange line or bell signal to be damaged with relatively low voltage
Consumption and power attenuation are transferred to the first telephone set or the second telephone set, can realize the low mesh low with power attenuation of voltage loss
, and the phone branch means are made up of unilateal conduction device and voltage follow module, and its production cost is relatively low.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those skilled in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is a kind of function structure chart of phone branch means provided in an embodiment of the present invention；
Fig. 2 is a kind of circuit structure diagram of phone branch means provided in an embodiment of the present invention；
Fig. 3 is the bell signal of the positive voltage of exchange line output provided in an embodiment of the present invention；
Fig. 4 is the bell signal of the negative voltage of exchange line output provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 shows a kind of modular structure of phone branch means 1 provided in an embodiment of the present invention, for convenience of description,
The part related to the embodiment of the present invention is illustrate only, details are as follows：
As shown in figure 1, phone branch means 1 are connected with exchange line 2, the first telephone set 3 and the second telephone set 4.The phone point
Line apparatus 1 includes the first unilateal conduction device 111, first voltage follows module 112, the second unilateal conduction device 121 and second
Voltage follow module 122.
The input of first unilateal conduction device 111, first voltage follow the controlled end of module 112 and second voltage to follow
The output end of module 122 connects the first output end of exchange line 2 and the loop end of the second telephone set 4, the second unilateal conduction device jointly
The input of part 121, first voltage follow the output end of module 112 and second voltage to follow the controlled end of module 122 to connect jointly
Connect the second output end of exchange line 2 and the loop end of the first telephone set 3, the output end of the first unilateal conduction device 111 and the first electricity
Pressure follows the input of module 112 to be connected to the input of the first telephone set 3 altogether, the output end of the second unilateal conduction device 121 with
Second voltage follows the input of module 122 to be connected to the input of the second telephone set 4 altogether.
When the first output end of exchange line 2 and the second output end output feedforward signal, the first unilateal conduction device 111
Turn on so that the first telephone set 3 works, meanwhile, the second unilateal conduction device 121 turns off, first voltage follows module 112 and the
Two voltage follow modules 122 are stopped；When the first output end of exchange line 2 and the second output end output reverse feeding signal,
Second unilateal conduction device 121 turns on so that the second telephone set 4 works, meanwhile, the first unilateal conduction device 111 turns off, first
Voltage follow module 112 and second voltage follow module 122 to be stopped.
When the first output end of exchange line 2 and the second output end output positive voltage bell signal, the first unilateal conduction device
111 conductings, first voltage follow module 112 that positive voltage bell signal is transferred into the first telephone set 3, meanwhile, second unidirectionally leads
Electrical part 121 turns off, and second voltage follows module 122 to be stopped；When the first output end of exchange line 2 and the second output end export
During negative voltage bell signal, the second unilateal conduction device 121 turns on, and second voltage follows module 122 by negative voltage bell signal
The second telephone set 4 is transferred to, meanwhile, the first unilateal conduction device 111 turns off, and first voltage follows module 112 to be stopped.
In embodiments of the present invention, connect the first telephone set 3 of phone branch means 1 and the second telephone set 4 has two respectively
Kind working condition：When exchange line 2 exports electric feed signal, the first telephone set 3 or the second telephone set 4 are operated in feed condition, the feedback
Electricity condition refers to that exchange line 2 exports the state of the first telephone set 3 or the normal work of the second telephone set 4 after feed voltage.Above-mentioned feedback
Electric signal is the d. c. voltage signal of preset voltage value, wherein, feedforward signal is using the second output end of exchange line 2 as reference
Ground, the level of the first output end of exchange line 2 are consistently higher than the d. c. voltage signal of the level of the second output end, and the of exchange line 2
Voltage difference between one output end and the second output end is the magnitude of voltage of the feedforward signal；Negative sense electric feed signal is with office
First output end of line 2 is reference ground, and the level of the second output end of exchange line 2 is consistently higher than the direct current of the level of the first output end
Voltage signal, and the voltage difference between the first output end and the second output end of exchange line 2 is the voltage of the feedforward signal
Value.For example, the electric feed signal is amplitude 48V d. c. voltage signal.When exchange line 2 export bell signal when, the first telephone set 3 or
The second telephone set of person 4 is operated in ringing condition, the ringing condition refer to exchange line 2 export bell signal make the first telephone set 3 or
Second telephone set 4 realizes the state of ring.Above-mentioned bell signal is the sine voltage signal of default amplitude and predeterminated frequency.Its
In, positive voltage bell signal is that the level of the first output end of exchange line 2 is high all the time using the second output end of exchange line 2 as reference ground
In the level of the second output end, and the waveform that the voltage difference between the first output end and the second output end of exchange line 2 is formed
The as positive voltage bell signal；Negative voltage bell signal is using the first output end of exchange line 2 as reference ground the second of exchange line 2
The level of output end is consistently higher than the level of the first output end, and the electricity between the first output end and the second output end of exchange line 2
The waveform that pressure difference is formed is the negative voltage bell signal.For example, the bell signal be amplitude in 30V between 90V, frequency
Rate is 22Hz to 28Hz sine wave signal, such as amplitude is 30V, and frequency is 25Hz sine wave signal.Below in conjunction with specific
The principle with regard to phone branch means and the working condition of the first telephone set 3 and the second telephone set 4 illustrate example respectively.
Feed condition：
When the feedforward signal of the first output end of exchange line 2 and the second output end output 48V, (i.e. exchange line 2 is first defeated
The level for going out end is higher than the level of the second output end) when, the first unilateal conduction device 111 turns on so that the first telephone set 3 works,
Meanwhile second unilateal conduction device 121 turn off, first voltage follows module 112 and second voltage follow module 122 stop work
Make.The 48V of now exchange line output feedforward signal produces the voltage loss of very little after the first unilateal conduction device 111
After be transferred to the first telephone set 3 so that the normal work of the first telephone set 3.And the second telephone set 4 is due to the second unilateal conduction device
121 shut-off and cisco unity malfunction.
When the reverse feeding signal of the first output end of exchange line 2 and the second output end output 48V, (i.e. exchange line 2 is second defeated
The level for going out end is higher than the level of the first output end) when, the second unilateal conduction device 121 turns on so that the second telephone set 4 works,
Meanwhile first unilateal conduction device 111 turn off, first voltage follows module 112 and second voltage follow module 122 stop work
Make.The 48V of now exchange line output reverse feeding signal produces the voltage loss of very little after the second unilateal conduction device 121
After be transferred to the second telephone set 4 so that the normal work of the second telephone set 4.And the first telephone set 3 is due to the first unilateal conduction device
111 shut-off and cisco unity malfunction.
Ringing condition：
As shown in figure 3, when the first output end of exchange line 2 and the second output end output amplitude are that (peak voltage value is 30V
0V, peak voltage value 60V), when frequency is the sine wave bell signal of 25Hz positive voltage, now the first unilateal conduction device
111 conductings, first voltage follow module 112 that the bell signal of positive voltage is transferred into the first telephone set 3, the first telephone set 3 by
Turned in the first unilateal conduction device 111 and first voltage follows module 112 to work and ring；Meanwhile the second unilateal conduction device
Part 121 turns off, and second voltage follows module 122 to be stopped, therefore the second telephone set 4 is due to the second unilateal conduction device 121
Shut-off and second voltage follow module 122 to be stopped and be unable to ring.
As shown in figure 4, when the first output end of exchange line 2 and the second output end output amplitude be 30V (peak voltage value for-
60V, peak voltage value 0V), when frequency is the bell signal of 25Hz negative voltage, now the second unilateal conduction device 121 is led
Logical, second voltage follows module 122 that the bell signal of positive voltage is transferred into the second telephone set 4, and the second telephone set 4 is due to second
Unilateal conduction device 121 turns on and second voltage follows module 122 to work and ring；Meanwhile first unilateal conduction device 111 close
Disconnected, first voltage follows module 112 to be stopped, thus the first telephone set 3 due to the first unilateal conduction device 111 shut-off and
First voltage follows module 112 to be stopped and be unable to ring.
Therefore, the phone branch means 1 in the embodiment of the present invention are unidirectionally led by the first unilateal conduction device 111, second
Electrical part 121, first voltage follow module 112 and second voltage follow electric feed signal that module 122 can export exchange line 2 or
Person's bell signal is transferred to the first telephone set 3 or the second telephone set 4 with relatively low voltage loss and power attenuation, realizes voltage
The low purpose low with power attenuation is lost, and the phone branch means 1 are made up of unilateal conduction device and voltage follow module,
Its production cost is relatively low.
Fig. 2 shows the circuit structure of phone branch means 1 provided in an embodiment of the present invention, for convenience of description, only shows
The part related to the embodiment of the present invention is gone out, details are as follows：
As one embodiment of the invention, the first unilateal conduction device 111 is the first diode D1, and the first diode D1 is just
Pole and negative pole are respectively the input and output end of the first unilateal conduction device 111.
As one embodiment of the invention, the second unilateal conduction device 121 is the second diode D2, and the second diode D2 is just
Pole and negative pole are respectively the input and output end of the second unilateal conduction device 121.
As one embodiment of the invention, first voltage follows module 112 to include：First resistor R1, the first PNP type triode
Q1, second resistance R2,3rd resistor R3, the 4th resistance R4 and the first NPN type triode Q2.
First resistor R1 first end is the controlled end that first voltage follows module 112, and first resistor R1 the second end connects
The first PNP type triode Q1 base stage is connect, the first PNP type triode Q1 colelctor electrode connects second resistance R2 first end, the
Two resistance R2 the second end is connected to the first NPN type triode Q2 base stage, 3rd resistor R3 with 3rd resistor R3 first end altogether
The second end and the first NPN type triode Q2 emitter stage connect to form the output end that first voltage follows module 112 altogether, first
NPN type triode Q2 colelctor electrode connects the 4th resistance R4 first end, the first PNP type triode Q1 emitter stage and the
Four resistance R4 the second end connects to form the input that first voltage follows module 112 altogether.
As one embodiment of the invention, second voltage follows module 122 to include：5th resistance R5, the second PNP type triode
Q3, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8 and the second NPN type triode Q4.
5th resistance R5 first end is the controlled end that second voltage follows module 122, and the 5th resistance R5 the second end connects
Connecing the base stage of the first PNP type triode, the second PNP type triode Q3 colelctor electrode connects the 6th resistance R6 first end, and the 6th
Resistance R6 the second end is connected to the second NPN type triode Q4 base stage with the 7th resistance R7 first end altogether, the 7th resistance R7's
Second end and the second NPN type triode Q4 emitter stage connect to form the output end that second voltage follows module 122 altogether, the 2nd NPN
Type triode Q4 colelctor electrode connects the 8th resistance R8 first end, the second PNP type triode Q3 emitter stage and the 8th
Resistance R8 the second end connects to form the input that second voltage follows module 122 altogether.
Below in conjunction with operation principle, above-mentioned phone branch means are further described：
Feed condition：
When the first output end of exchange line 2 and the d. c. voltage signal of the second output end output preset voltage value, for example, exchange line
(i.e. exchange line 2 is first defeated for the feedforward signal of 2 the first output end and the second output end output 48V d. c. voltage signal
The level for going out end is higher than the level of the second output end) when, now the first diode D1 is turned on and the second diode D2 ends, and first
The setting of resistance R1 and the 5th resistance R5 resistance is larger, for example, the resistance for setting first resistor R1 and the 5th resistance R5 is
100K ohms.Because the first diode D1 turns on first input end, the first diode D1, the and of the first telephone set 3 so that exchange line 2
Second input of exchange line 2 forms loop, and thus the first telephone set 3 has feed can be with normal work；And the first input of exchange line 2
Though end, the second telephone set 4, the second PNP type triode Q3 emitter stage and base stage, the 5th resistance R5, the first input end of exchange line
So also form loop, but because the 5th resistance R5 resistance is 100K ohms, therefore electric current very little in loop, it is insufficient to allow second
Telephone set 4 works, and the second diode D2 is by the cisco unity malfunction of the second telephone set 4 in addition.Now, the first PNP type triode
Q1, the first NPN type triode Q2, the second PNP type triode Q3 and the second NPN type triode Q4 are in by state.
When the first output end of exchange line 2 and the d. c. voltage signal of the second output end output preset voltage value, for example, exchange line
(i.e. exchange line 2 is second defeated for the reverse feeding signal of 2 the first output end and the second output end output -48V d. c. voltage signal
Go out the level at end higher than the with the level of output end) when, now the second diode D2 conductings and the first diode D1 ends, due to
Second diode D2, which is turned on, causes the first defeated of the second input of exchange line 2, the second diode D2, the second telephone set 4 and exchange line 2
Enter end and form loop, thus the second telephone set 4 has feed can be with normal work；And the second input, the first telephone set of exchange line 2
Although the 3, the first PNP type triode Q1 emitter stage and base stage, first resistor R1, the first input end of exchange line also form loop,
But because first resistor R1 resistance is 100K ohms, therefore electric current very little in loop, it is insufficient to allow the first telephone set 3 to work,
In addition the first diode D1 is by the cisco unity malfunction of the first telephone set 3.Now, the first PNP type triode Q1, the first NPN type
Triode Q2, the second PNP type triode Q3 and the second NPN type triode Q4 are in by state.
Therefore, the phone branch means 1 in the embodiment of the present invention can be incited somebody to action by the first diode D1, the second diode D2
The electric feed signal that exchange line 2 exports is transferred to the first telephone set 3 or the second telephone set with relatively low voltage loss and power attenuation
4, realize the low purpose low with power attenuation of voltage loss.The phone branch means 1 are made up of diode, triode and resistance,
And it is simple in construction, its production cost is relatively low.
Ringing condition：
As shown in figure 3, when the first output end of exchange line 2 and the second output end output amplitude are that (peak voltage value is 30V
0V, peak voltage value 60V), (with the second output of exchange line 2 when frequency is the sine wave bell signal of 25Hz positive voltage
Hold and be consistently higher than the level of the second output end for reference ground, the level of the first output end of exchange line 2), now the first diode D1
Turn on and the second diode D2 cut-offs.Sine wave signal in Fig. 3 is the first output end of exchange line 2 and the electricity of the second output end
Adjusted value.As shown in figure 3, in trough to during crest, the first PNP type triode Q1, the first NPN type triode Q2, the 2nd PNP
Type triode Q3 and the second NPN type triode Q4 are in by state, due to the first diode D1 conducting, the first telephone set
The level of 3 inputs can change with the change of the level of the first input end of exchange line 2, and relation between the two is：First
The level that the level of the input of telephone set 3 is approximately equal to the first output end of exchange line 2 subtracts 0.7V (i.e. the first diode D1 conductings
Voltage).In crest to during trough, the first PNP type triode Q1, the first NPN type triode Q2 are in the conduction state, and first
PNP type triode Q1, the first NPN type triode Q2, first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4
Form voltage follower circuit so that the level of the input of the first telephone set 3 is with the change of the level of the first input end of exchange line 2
Change and change, and due to the first PNP type triode Q1 conducting, the level of the input of the first telephone set 3 and the first of exchange line 2
Relation between the level of input is：The level of the input of first telephone set 3 is approximately equal to the electricity of the first input end of exchange line 2
It is flat to add 0.7V (conducting voltage of PN junction between the first PNP type triode Q1 emitter stages and base stage).It is added in the first telephone set 3
Input and the voltage difference at loop end are the voltage at the both ends of the first telephone set 3, and reference is used as using the second input of exchange line 2
Ground, because the loop end of the first telephone set 3 connects with the second input of exchange line 2, therefore the electricity of the input of the first telephone set 3
Flat is the voltage at the both ends of the first telephone set 3.As the above analysis, the first output end of exchange line 2 and shaking for the second output end
Bell signal more can be transmitted completely to the both ends of the first telephone set 3, and voltage loss is smaller, about 2V voltage loss,
Therefore its power attenuation is also smaller.And the second telephone set 4 is in cut-off state, therefore the second telephone set due to the second diode D2
4 are unable to ring.
As shown in figure 4, when the first output end of exchange line 2 and the second output end output amplitude be 30V (peak voltage value for-
60V, peak voltage value 0V), (with the first output of exchange line 2 when frequency is the sine wave bell signal of 25Hz negative voltage
Hold and be consistently higher than the level of the first output end for reference ground, the level of the second output end of exchange line 2), now the second diode D2
Turn on and the first diode D1 cut-offs.Sine wave signal in Fig. 4 is the first output end of exchange line 2 and the electricity of the second output end
Adjusted value.As shown in figure 4, in trough to during crest, the first PNP type triode Q1, the first NPN type triode Q2, the 2nd PNP
Type triode Q3 and the second NPN type triode Q4 are in by state, due to the second diode D2 conducting, the second telephone set
The level of 4 inputs can change with the change of the level of the second input of exchange line 2, and relation between the two is：Second
The level that the level of the input of telephone set 4 is approximately equal to the second output end of exchange line 2 subtracts 0.7V (i.e. the second diode D2 conductings
Voltage).In crest to during trough, the second PNP type triode Q3, the second NPN type triode Q4 are in the conduction state, and second
PNP type triode Q3, the second NPN type triode Q4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7 and the 8th resistance R8
Form voltage follower circuit so that the level of the input of the second telephone set 4 is with the change of the level of the second input of exchange line 2
Change and change, and due to the second PNP type triode Q3 conducting, the level of the input of the second telephone set 4 and the second of exchange line 2
Relation between the level of input is：The level of the input of second telephone set 4 is approximately equal to the electricity of the second input of exchange line 2
It is flat to add 0.7V (conducting voltage of PN junction between the second PNP type triode Q3 emitter stages and base stage).It is added in the second telephone set 4
Input and the voltage difference at loop end are the voltage at the both ends of the second telephone set 4, and reference is used as using the first input end of exchange line 2
Ground, because the loop end of the second telephone set 4 connects with the first input end of exchange line 2, therefore the electricity of the input of the second telephone set 4
Flat is the voltage at the both ends of the second telephone set 4.As the above analysis, the first output end of exchange line 2 and shaking for the second output end
Bell signal more can be transmitted completely to the both ends of the second telephone set 4, and voltage loss is smaller, about 2V voltage loss,
Therefore its power attenuation is also smaller.And the first telephone set 3 is in cut-off state, therefore the first telephone set due to the first diode D1
3 are unable to ring.
Therefore, the phone branch means 1 in the embodiment of the present invention by the first diode D1, the second diode D2, by three
Pole pipe and the first voltage of resistance composition follow the ring that module 112 and second voltage follow module 122 to export exchange line 2
Signal is transferred to the first telephone set 3 or the second telephone set 4 with relatively low voltage loss and power attenuation, realizes that voltage loss is low
The purpose low with power attenuation, and the phone branch means 1 are made up of diode, triode and resistance, and it is simple in construction, its
Production cost is relatively low.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (5)
1. a kind of phone branch means, it is connected with exchange line, the first telephone set and the second telephone set, it is characterised in that the phone
Branch means include：
First unilateal conduction device, first voltage follow module, the second unilateal conduction device and second voltage to follow module；
The input of the first unilateal conduction device, the first voltage follow module controlled end and the second voltage with
Connect the first output end of the exchange line and the loop end of second telephone set jointly with the output end of module, described second is single
Input, the first voltage to conductive devices follow the output end of module and the second voltage to follow the controlled end of module
Connect the second output end of the exchange line and the loop end of first telephone set jointly, the first unilateal conduction device it is defeated
Go out end follows the input of module to be connected to the input of first telephone set altogether with the first voltage, and described second unidirectionally leads
The output end of electrical part and the second voltage follow the input of module to be connected to the input of second telephone set altogether；
When the first output end of the exchange line and the second output end output feedforward signal, the first unilateal conduction device
Turn on so that first phones work, meanwhile, the second unilateal conduction device shut-off, the first voltage follow module
Module from service is followed with the second voltage；When the first output end of the exchange line and the second output end output reverse feeding
During signal, the second unilateal conduction break-over of device so that second phones work, meanwhile, the first unilateal conduction device
Part shut-off, the first voltage follow module and second voltage to follow module from service；
When the first output end of the exchange line and the second output end output positive voltage bell signal, the first unilateal conduction device
Part turns on, and the first voltage follows module that the positive voltage bell signal is transferred into first telephone set, meanwhile, it is described
Second unilateal conduction device turns off, and the second voltage follows module from service；When the first output end of the exchange line and
When two output ends export negative voltage bell signal, the second unilateal conduction break-over of device, the second voltage follows module will
The negative voltage bell signal is transferred to second telephone set, meanwhile, the first unilateal conduction device shut-off, described first
Voltage follow module from service.
2. phone branch means as claimed in claim 1, it is characterised in that the first unilateal conduction device is the one or two pole
Pipe, the positive pole and negative pole of first diode are respectively the input and output end of the first unilateal conduction device.
3. phone branch means as claimed in claim 1, it is characterised in that the second unilateal conduction device is the two or two pole
Pipe, the positive pole and negative pole of second diode are respectively the input and output end of the second unilateal conduction device.
4. phone branch means as claimed in claim 1, it is characterised in that the first voltage follows module to include：
First resistor, the first PNP type triode, second resistance, 3rd resistor, the 4th resistance and the first NPN type triode；
The first end of the first resistor is the controlled end that the first voltage follows module, and the second end of the first resistor connects
The base stage of first PNP type triode is connect, the colelctor electrode of first PNP type triode connects the first of the second resistance
End, the second end of the second resistance are connected to the base stage of first NPN type triode with the first end of the 3rd resistor altogether,
The emitter stage of second end of the 3rd resistor and first NPN type triode connects altogether to be formed the first voltage and follows module
Output end, the colelctor electrode of first NPN type triode connects the first end of the 4th resistance, first positive-negative-positive
Second end of the emitter stage of triode and the 4th resistance connects to form the input that the first voltage follows module altogether.
5. phone branch means as claimed in claim 1, it is characterised in that the second voltage follows module to include：
5th resistance, the second PNP type triode, the 6th resistance, the 7th resistance, the 8th resistance and the second NPN type triode；
The first end of 5th resistance is the controlled end that the second voltage follows module, and the second end of the 5th resistance connects
The base stage of first PNP type triode is connect, the colelctor electrode of second PNP type triode connects the first of the 6th resistance
End, the second end of the 6th resistance are connected to the base stage of second NPN type triode with the first end of the 7th resistance altogether,
Second end of the 7th resistance and the emitter stage of second NPN type triode connect altogether to be formed the second voltage and follows module
Output end, the colelctor electrode of second NPN type triode connects the first end of the 8th resistance, second positive-negative-positive
Second end of the emitter stage of triode and the 8th resistance connects to form the input that the second voltage follows module altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611139878.9A CN107659737B (en) | 2016-12-12 | 2016-12-12 | Telephone branching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611139878.9A CN107659737B (en) | 2016-12-12 | 2016-12-12 | Telephone branching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107659737A true CN107659737A (en) | 2018-02-02 |
| CN107659737B CN107659737B (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611139878.9A Active CN107659737B (en) | 2016-12-12 | 2016-12-12 | Telephone branching device |
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| CN (1) | CN107659737B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1518793A (en) * | 2001-04-23 | 2004-08-04 | ����ɭ�绰�ɷ�����˾ | Automatic optimization of linearity for envelope feedback amplifier linearization |
| US7139391B2 (en) * | 2001-10-30 | 2006-11-21 | Integration Associates, Inc. | DAA hook switch |
| US8411848B2 (en) * | 2008-11-11 | 2013-04-02 | Uniden Corporation | Telephone interface circuit for providing over-current and over-voltage protection |
| CN203606667U (en) * | 2013-08-02 | 2014-05-21 | 安美世纪（北京）科技有限公司 | Wireless intelligent central control system for hotel guest rooms |
| CN104345704A (en) * | 2013-08-02 | 2015-02-11 | 安美世纪（北京）科技有限公司 | Wireless intelligent central control system of hotel rooms and control method thereof |
-
2016
- 2016-12-12 CN CN201611139878.9A patent/CN107659737B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1518793A (en) * | 2001-04-23 | 2004-08-04 | ����ɭ�绰�ɷ�����˾ | Automatic optimization of linearity for envelope feedback amplifier linearization |
| US7139391B2 (en) * | 2001-10-30 | 2006-11-21 | Integration Associates, Inc. | DAA hook switch |
| US8411848B2 (en) * | 2008-11-11 | 2013-04-02 | Uniden Corporation | Telephone interface circuit for providing over-current and over-voltage protection |
| CN203606667U (en) * | 2013-08-02 | 2014-05-21 | 安美世纪（北京）科技有限公司 | Wireless intelligent central control system for hotel guest rooms |
| CN104345704A (en) * | 2013-08-02 | 2015-02-11 | 安美世纪（北京）科技有限公司 | Wireless intelligent central control system of hotel rooms and control method thereof |
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| Publication number | Publication date |
|---|---|
| CN107659737B (en) | 2020-01-07 |
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Address after: Room 301, Building D, Yiou International Science Park, No. 1, Liyuan 2nd Road, Zhancheng Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong 518000 Patentee after: SHENZHEN KILO-X ELECTRONIC Co.,Ltd. Address before: 518000 Block F, Floor 7, Building 10, Huafeng Science Park, Fuyong Tangwei, Bao'an, Shenzhen, Guangdong Province Patentee before: SHENZHEN KILO-X ELECTRONIC Co.,Ltd. |