CN206195460U - Communication cabinet machine drive circuit - Google Patents
Communication cabinet machine drive circuit Download PDFInfo
- Publication number
- CN206195460U CN206195460U CN201621232895.2U CN201621232895U CN206195460U CN 206195460 U CN206195460 U CN 206195460U CN 201621232895 U CN201621232895 U CN 201621232895U CN 206195460 U CN206195460 U CN 206195460U
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- triode
- rectifier bridge
- resistance
- drive circuit
- comparator
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Abstract
The utility model is suitable for an electronic circuit technical field provides a communication cabinet machine drive circuit, including reducing transformer, rectifier bridge, drive module and the stepup transformer of connecting in order, the output of stepup transformer is used for connecting the cabinet -type air conditioner load, drive module includes stand -by power supply U, comparator IC, first relay, second relay, triode T1 and T2, and first relay includes coil J1 and switch K1, the second relay includes coil J2 and switch K2. This drive circuit structure is simple, adopts some simple components and parts to realize, can improve the power supply circuit of communication cabinet machine according to this drive circuit, and the direct mount is in the top or the bottom of cabinet -type air conditioner, and is with low costs, not occupation space.
Description
Technical field
The utility model belongs to electronic circuit technology field, more particularly to a kind of communication cabinet drive circuit.
Background technology
Communication equipment is located in computer room, and general power supply is 48V.Cabinet-type air conditioner is powered very crucial in computer room, it is impossible to powered off, otherwise
Large area can be caused to fall net, cause heavy losses.Communication cabinet-type air conditioner in current computer room can all use independent UPS stand-by power supplies,
But because ups power integrated level is high, purchase cost remains high, and, ups power volume is big to be needed to take independent sky
Between.
Utility model content
In view of the above problems, the purpose of this utility model is to provide a kind of communication cabinet drive circuit, it is intended to solved existing
There is the big technical problem of ups power high cost, area occupied.
The utility model is adopted the following technical scheme that：
The communication cabinet drive circuit includes the reducing transformer, rectifier bridge, drive module and the stepup transformer that are sequentially connected with, described
The output end of stepup transformer be used for connect cabinet-type air conditioner load, the drive module include stand-by power supply U, comparator IC, the first relay,
Second relay, triode T1 and T2, the first relay of institute include coil J1 and switch K1, and second relay includes coil
J2 and switch K2, the first end of the rectifier bridge is connected to the input positive pole of comparator IC, the comparator IC by resistance R1
Input positive pole be connected to the ground by voltage-stabiliser tube D1, diode D2, the first end of the rectifier bridge is connected to the stand-by power supply U
Negative pole and be connected to the ground, the second end of the rectifier bridge is connected to the ground by coil J2, and the second end of the rectifier bridge passes through
Switch K2 is connected to the input negative pole of comparator IC, and the positive pole of the stand-by power supply U is connected to the input negative pole of comparator IC, institute
The second end for stating rectifier bridge is connected to the input negative pole of comparator IC, the second end of the rectifier bridge by resistance R2, switch K1
The colelctor electrode of triode T1 is connected to by coil J1, the output end of comparator IC is connected to the base of triode T1 by resistance R2
Pole, the emitter stage of triode T1 is connected to the ground, and the colelctor electrode of triode T2 is connected to the second end of the rectifier bridge, triode T2
Base stage the second end than the rectifier bridge is connected to by resistance R4, the base stage of triode T2 by voltage-stabiliser tube D3 in parallel,
Electric capacity C1 is connected to the first input end of the stepup transformer, and the second input of the stepup transformer is connected to the ground, triode T2's
Emitter stage is connected to the first input end of stepup transformer by resistance R5.
Further, the communication cabinet drive circuit also includes diode D4-D7, wherein resistance R6, R7, diode
It is in parallel with diode D4 after D5, resistance R6 series connection, it is then in parallel with coil J1, with diode after diode D7, resistance R7 series connection
D6 is in parallel, then in parallel with coil J2.
Further, electric capacity C2 is additionally provided between the first end of the rectifier bridge and the second end.
Further, between the second end of the tie point and the rectifier bridge of the resistance R4 and triode T2 colelctor electrodes also
It is provided with normally closed switch K3.
Further, the colelctor electrode of the triode T2 is connected to the ground by diode D8, resistance R8.
The beneficial effects of the utility model are：This driving circuit structure is simple, can be real using some simple components
It is existing, the power circuit of communication cabinet-type air conditioner can be improved according to this drive circuit, it is directly installed on the top or bottom of cabinet-type air conditioner, cost
It is low, it is not take up space.
Brief description of the drawings
Fig. 1 is the circuit diagram of the communication cabinet drive circuit that the utility model embodiment is provided.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation
Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only used to explain
The utility model, is not used to limit the utility model.
In order to illustrate technical scheme described in the utility model, illustrated below by specific embodiment.
Fig. 1 shows the structure of the communication cabinet drive circuit that the utility model embodiment is provided, for convenience of description only
Show the part related to the utility model embodiment.
As shown in figure 1, the present embodiment provide communication cabinet drive circuit include be sequentially connected with reducing transformer, rectifier bridge,
Drive module and stepup transformer, the output end of the stepup transformer are used to connect cabinet-type air conditioner load, and the drive module includes stand-by power supply
U, comparator IC, the first relay, the second relay, triode T1 and T2, the first relay of institute include coil J1 and switch K1,
Second relay includes coil J2 and switch K2, and the first end of the rectifier bridge is connected to comparator IC's by resistance R1
Input positive pole, the input positive pole of the comparator IC is connected to the ground by voltage-stabiliser tube D1, diode D2, and the first of the rectifier bridge
End is connected to the negative pole of the stand-by power supply U and is connected to the ground, and the second end of the rectifier bridge is connected to the ground by coil J2, institute
The second end for stating rectifier bridge is connected to the input negative pole of comparator IC by switching K2, and the positive pole of the stand-by power supply U is connected to
Born by the input that resistance R2, switch K1 are connected to comparator IC at the input negative pole of comparator IC, the second end of the rectifier bridge
Pole, the second end of the rectifier bridge is connected to the colelctor electrode of triode T1 by coil J1, and the output end of comparator IC is by electricity
Resistance R2 is connected to the base stage of triode T1, and the emitter stage of triode T1 is connected to the ground, and the colelctor electrode of triode T2 is connected to described
Second end of rectifier bridge, the base stage of triode T2 is connected to the second end than the rectifier bridge by resistance R4, triode T2's
Base stage is connected to the first input end of the stepup transformer by voltage-stabiliser tube D3, electric capacity C1 in parallel, and the second of the stepup transformer is defeated
Enter end to be connected to the ground, the emitter stage of triode T2 is connected to the first input end of stepup transformer by resistance R5.
During work, reducing transformer input accesses power supply, and coil J2 is powered, and switch K2 disconnects, diode D1 and voltage-stabiliser tube D2
Pressure drop as the reference voltage, charging voltage is monitored by reference to voltage.When the voltage of the input positive pole of comparator is low
When reference voltage, i.e., the voltage of stand-by power supply U is less than reference voltage, and the output end output high level of comparator IC1, T1 leads
Logical, then coil J1 must be conducted, and switch K1 is connected, and voltage is charged by resistance R2 to stand-by power supply, changes R2 resistances adjustable
Whole charging current.As the charging interval increases, the voltage of comparator IC input negative poles gradually increases, when voltage is more than reference voltage
When, comparator IC output ends output low level, T1 cut-offs, coil J1 dead electricity, K1 is disconnected, and disconnects charge circuit, and realization is filled automatically
Electric protection function.R4, T2, R5, C1, D3 constitute constant-current drive circuit simultaneously, and rectifier bridge is directly by constant-current drive circuit to liter
Transformer power-supply, stepup transformer directly exports the operating voltage of cabinet-type air conditioner load.
When input power power down, coil J2 power down, K2 is connected, and battery is realized having a power failure by K2 direct voltage outputs
When automatic switching function.
This circuit structure is simple, it is possible to achieve charging controller and power supply automatic switching function, cost are very low, can be with
This circuit is integrated with existing cabinet-type air conditioner power circuit, cabinet-type air conditioner bottom or top are installed on, it is not take up excessive space.
In addition, as preferred structure, the of the tie point of the resistance R4 and triode T2 colelctor electrodes and the rectifier bridge
Normally closed switch K3 is additionally provided between two ends.The switch is power switch, and either normal power supply or stand-by power supply are powered, if disconnected
Switch K3, can be directly to load breakpoint, convenient maintenance.In addition, the colelctor electrode of the triode T2 passes through diode D8, electricity
Resistance R8 is connected to the ground.Diode D8 is light emitting diode, the working condition for indicating load, shows that load is not broken when D8 is bright
Electricity.Further, electric capacity C2 is additionally provided between the first end of the rectifier bridge and the second end, electric capacity C2 is filter capacitor, is used
In the High-frequency Interference noise of filtering rectifier bridge output.
Further, the communication cabinet drive circuit also includes diode D4-D7, wherein resistance R6, R7, diode
It is in parallel with diode D4 after D5, resistance R6 series connection, it is then in parallel with coil J1, with diode after diode D7, resistance R7 series connection
D6 is in parallel, then in parallel with coil J2.Described diode D5, D7 are light emitting diode, and D5 is used to indicate filling for stand-by power supply
Electricity condition, represents that stand-by power supply charges when bright, D7 is used for the power supply state for indicating cabinet-type air conditioner to access power supply, when bright, surface
Cabinet-type air conditioner normal power supply, when going out, surface input power down is switched by stand-by power supply and powered.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of communication cabinet drive circuit, it is characterised in that including be sequentially connected with reducing transformer, rectifier bridge, drive module and
Stepup transformer, the output end of the stepup transformer is used to connecting cabinet-type air conditioner load, the drive module include stand-by power supply U, comparator IC,
First relay, the second relay, triode T1 and T2, institute the first relay include coil J1 and switch K1, described second after
Electrical equipment includes coil J2 and switch K2, and the first end of the rectifier bridge is connected to the input positive pole of comparator IC by resistance R1,
The input positive pole of the comparator IC is connected to the ground by voltage-stabiliser tube D1, diode D2, and the first end of the rectifier bridge is connected to
The negative pole of the stand-by power supply U is simultaneously connected to the ground, and the second end of the rectifier bridge is connected to the ground by coil J2, the rectifier bridge
The second end the input negative pole of comparator IC is connected to by switching K2, the positive pole of the stand-by power supply U is connected to comparator IC
Input negative pole, the second end of the rectifier bridge is connected to the input negative pole of comparator IC by resistance R2, switch K1, described whole
The second end for flowing bridge is connected to the colelctor electrode of triode T1 by coil J1, and the output end of comparator IC is connected to by resistance R2
The base stage of triode T1, the emitter stage of triode T1 is connected to the ground, and the colelctor electrode of triode T2 is connected to the of the rectifier bridge
Two ends, the base stage of triode T2 is connected to the second end than the rectifier bridge by resistance R4, and the base stage of triode T2 is by simultaneously
The voltage-stabiliser tube D3 of connection, electric capacity C1 are connected to the first input end of the stepup transformer, and the second input of the stepup transformer is connected to
Ground, the emitter stage of triode T2 is connected to the first input end of stepup transformer by resistance R5.
2. communication cabinet drive circuit as claimed in claim 1, it is characterised in that the communication cabinet drive circuit also includes two
Level pipe D4-D7, resistance R6, R7, it is in parallel with diode D4 after wherein diode D5, resistance R6 series connection, it is then in parallel with coil J1,
It is in parallel with diode D6 after diode D7, resistance R7 series connection, it is then in parallel with coil J2.
3. communication cabinet drive circuit as claimed in claim 2, it is characterised in that the first end of the rectifier bridge and the second end it
Between be additionally provided with electric capacity C2.
4. communication cabinet drive circuit as claimed in claim 3, it is characterised in that the resistance R4 and triode T2 colelctor electrodes
Normally closed switch K3 is additionally provided between tie point and the second end of the rectifier bridge.
5. communication cabinet drive circuit as claimed in claim 4, it is characterised in that the colelctor electrode of the triode T2 passes through two grades
Pipe D8, resistance R8 are connected to the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621232895.2U CN206195460U (en) | 2016-11-16 | 2016-11-16 | Communication cabinet machine drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621232895.2U CN206195460U (en) | 2016-11-16 | 2016-11-16 | Communication cabinet machine drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206195460U true CN206195460U (en) | 2017-05-24 |
Family
ID=58726266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621232895.2U Active CN206195460U (en) | 2016-11-16 | 2016-11-16 | Communication cabinet machine drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206195460U (en) |
-
2016
- 2016-11-16 CN CN201621232895.2U patent/CN206195460U/en active Active
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