CN201766506U - Communication power supply with input overvoltage/undervoltage protection - Google Patents
Communication power supply with input overvoltage/undervoltage protection Download PDFInfo
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- CN201766506U CN201766506U CN2010205272495U CN201020527249U CN201766506U CN 201766506 U CN201766506 U CN 201766506U CN 2010205272495 U CN2010205272495 U CN 2010205272495U CN 201020527249 U CN201020527249 U CN 201020527249U CN 201766506 U CN201766506 U CN 201766506U
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Abstract
The utility model provides a communication power supply with input overvoltage/undervoltage protection, comprising an input module, an overvoltage/undervoltage protection module and an output module, wherein the overvoltage/undervoltage protection module is connected to the input module and the control module, wherein the overvoltage/undervoltage protection module comprises discrete electronic components; by the unique design, the problems which circuits, batteries and traditional power supplies are destroyed because the input battery voltage is too high or too low is solved; in the utility model, when the input is overvoltage/undervoltage, the circuits, batteries and power supply can be protected effectively; the circuit uses discrete components and electronic switches to realize overvoltage/undervoltage protection function; the structure is simple, the cost is relatively low, and the dynamic response speed is fast.
Description
Technical field
The utility model relates to a kind of communication power supply, and more specifically language is meant a kind of input overvoltage/undervoltage protection communication power supply.
Background technology
Communication power supply is a kind of Switching Power Supply of high frequencyization, it is a kind of voltage conversion device, and the traditional communication power supply is that previous stage output voltage or UPS battery voltage are passed through the Power Conversion module, changes into AC low-tension, by after rectifying and wave-filtering and the voltage stabilizing, export required direct voltage again.
Traditional communication power supply input design, under previous stage output or the normal situation of UPS battery, output is stable, and every technical indicator is normal.
But problems such as the previous stage power supply usually can because of aging, the damage of components and parts or the UPS reserve battery overcharges, overdischarge or damage; cause the instability of communication power supply input voltage, just may cause the damage of owing property forever of UPS reserve battery or communication power supply itself burns or connection line such as burns at phenomenon.
And this phenomenon of system's permanent damages appears; be exactly because there is the defective in the design in traditional communication power supply, do not possess overvoltage and under-voltage defencive function on the input circuit, in other words when previous stage breaks down; back one-level can not effectively stop its destructive spreading, and results in greater loss.Therefore develop and a kind ofly have the protection of input overvoltage/undervoltage, and the communication power supply that can respond fast is just very necessary.
Summary of the invention
The utility model provides a kind of and imported, the under-voltage protection communication power supply; its overvoltage/undervoltage protection module is made up of discrete electronic devices and components; by its unique design; it has solved the traditional communication power supply because the input cell voltage is too high or too low; and the problem that circuit, battery and power supply itself damages appears; make the utility model when overvoltage/undervoltage appears in input, effectively protection circuit, battery and power supply itself.And this is first purpose of the present utility model.
The utility model provides a kind of and imported, the under-voltage protection communication power supply, and its circuit adopts discrete component, electronic switch design to realize the overvoltage/undervoltage defencive function, and it is simple in structure, and cost is lower, rapid dynamic response speed.And this is second purpose of the present utility model.
For achieving the above object; the technical solution adopted in the utility model is: a kind ofly imported, the under-voltage protection communication power supply; it comprises; input module, overvoltage/undervoltage protection module, control module, output module; wherein, this overvoltage/undervoltage protection module is connected with this input module and this control module.
This input module comprises, power access circuit, secondary high-frequency filter circuit, input reverse-connection preventing circuit and smoothed filter circuit.
This input overvoltage/undervoltage module comprises protection circuit against input over-voltage and output under-voltage protecting circuit.
This control module comprises; spiking absorbs circuit, circuit for power conversion, master control control circuit; wherein; it is to link to each other with the smoothed filter circuit of this input module that this spiking absorbs circuit; and this spiking absorbs circuit and is connected with this circuit for power conversion, and this master control control circuit is to be connected with this smoothed filter circuit of this spiking absorption circuit, this circuit for power conversion, this input overvoltage/undervoltage protection module and this input module respectively again.
This spiking absorbs circuit and comprises resistance, electric capacity, diode, and wherein, this resistance and this electric capacity are connected in parallel, and this diode is connected with this capacitances in series with this resistance.
This circuit for power conversion is provided with high frequency transformer, and wherein, this high frequency transformer is to be connected with resistance, electric capacity and the diode of this spiking absorption circuit respectively, and this high frequency transformer is connected with this output module again.
This master control control circuit is provided with master control power supply IC, switching tube, optocoupler, TL431 voltage stabilizing IC; wherein; this master control power supply IC is connected with this smoothed filter circuit of this overvoltage/undervoltage protection module, this input module respectively; again; this master control power supply IC be connected in series resistance, electric capacity and this switching tube and this optocoupler of predetermined number, this TL431 voltage stabilizing IC is connected with resistance, the capacitances in series of this optocoupler and predetermined number.
This output module comprises, two groups of output circuits, wherein one group of output circuit comprises secondary rectification circuit, smoothed filter circuit, secondary voltage stabilizing circuit, wherein, this secondary rectification circuit is to be connected with this high frequency transformer of this circuit for power conversion, and this smoothed filter circuit is connected with this secondary rectification circuit, this secondary voltage stabilizing circuit, and this secondary voltage stabilizing circuit is connected with output wiring terminal.
Another group output circuit of this output module comprises secondary rectification circuit, smoothed filter circuit, high-frequency filter circuit, wherein, this secondary rectification circuit is to be connected with this high frequency transformer of this circuit for power conversion, and this smoothed filter circuit is connected with this secondary rectification circuit, this high-frequency filter circuit, and this high-frequency filter circuit is connected with this control module, output wiring terminal.
This input module, this overvoltage/undervoltage protection module, this control module, this output module are arranged on the same pcb board, and this pcb board is provided with location hole, can be arranged in the communication equipment, and these pcb board two ends respectively are provided with input, output wiring terminal.
This protection circuit against input over-voltage comprises some resistance, electric capacity, TL431 voltage stabilizing IC and triode, and this protection circuit against input over-voltage links to each other with this control module by this triode of this protection circuit against input over-voltage.
This output under-voltage protecting circuit is made up of some resistance, three-terminal voltage-stabilizing IC, triode and voltage stabilizing didoe, and this output under-voltage protecting circuit links to each other with control module by this triode of this output under-voltage protecting circuit.
This input reverse-connection preventing circuit of this input module is made up of a Schottky diode, is connected between this high-frequency filter circuit and this smoothed filter circuit, is connected with a fuse between this power access circuit and this high-frequency filter circuit.
This secondary voltage stabilizing circuit of this output module is by resistance, electric capacity, metal-oxide-semiconductor, the TL431 voltage stabilizing IC of the predetermined quantity connection that is in series.
This high-frequency filter circuit of this output module is provided with the high frequency common mode filter, between this high frequency common mode filter connection and this smoothed filter circuit and this output splicing ear.
The beneficial effects of the utility model are: the utility model provides a kind of and imported; the under-voltage protection communication power supply; it structurally comprises; input module; the overvoltage/undervoltage protection module; control module; output module; wherein; this overvoltage/undervoltage protection module is connected with this input module and this control module; wherein; this overvoltage/undervoltage protection module is made up of discrete electronic devices and components; by its unique design; it has solved the traditional communication power supply because the input cell voltage is too high or too low; and circuit appears; the problem that battery and power supply itself damages; make the utility model when overvoltage/undervoltage appears in input, effectively protection circuit; battery and power supply itself, its circuit adopts discrete component; electronic switch design is realized the overvoltage/undervoltage defencive function; it is simple in structure, and cost is lower; rapid dynamic response speed.
Description of drawings
Fig. 1 is the circuit theory diagrams of embodiment of the present utility model;
Fig. 2 is the circuit theory diagrams of the input module of embodiment of the present utility model;
Fig. 3 is the circuit theory diagrams of the input overvoltage/undervoltage protection module of embodiment of the present utility model;
Fig. 4 is the circuit theory diagrams of the control module of embodiment of the present utility model;
Fig. 5 is the circuit theory diagrams of the output module of embodiment of the present utility model;
Fig. 6 is the pcb board schematic diagram of embodiment of the present utility model.
Embodiment
Shown in Fig. 1 to 5; a kind of preferable specific embodiment of the utility model: a kind ofly imported, the under-voltage protection communication power supply; as shown in Figure 1; it structurally comprises; input module 10, overvoltage/undervoltage protection module 20, control module 30, output module 40; wherein, this overvoltage/undervoltage protection module 20 is connected with this input module 10 and this control module 30.
As shown in Figure 2, this input module 10 comprises, power access circuit 11, secondary high-frequency filter circuit 12, input reverse-connection preventing circuit 13 and smoothed filter circuit 14, wherein, input reverse-connection preventing circuit 13 is made up of a Schottky diode 131, be connected between high-frequency filter circuit 12 and the smoothed filter circuit 14, again, be connected with a fuse 111 between this power access circuit 11 and the high-frequency filter circuit 12.
As shown in Figure 3; this input overvoltage/undervoltage module 20 comprises protection circuit against input over-voltage 22 and output under-voltage protecting circuit 21; wherein protection circuit against input over-voltage 22 comprises some resistance, electric capacity, TL431 voltage stabilizing IC221 and triode 222; further; link to each other with control module 30 by triode 222; and under-voltage protecting circuit 21 is made up of some resistance, three-terminal voltage-stabilizing IC211, triode 212 and voltage stabilizing didoe 213, further links to each other with control module 30 by triode 212.
As shown in Figure 4; this control module 30 comprises; spiking absorbs circuit 31, circuit for power conversion 32, master control control circuit 33; wherein; it is to link to each other with the smoothed filter circuit 14 of this input module 10 that this spiking absorbs circuit 31; and this spiking absorbs circuit 31 and is connected with this circuit for power conversion 32, and this master control control circuit 33 is to be connected with the smoothed filter circuit 14 of this spiking absorption circuit 31, this circuit for power conversion 32, input overvoltage/undervoltage protection module 20 and this input module 10 respectively again.
This spiking absorbs circuit 31 and comprises resistance 311, electric capacity 312, diode 313, and wherein, this resistance 311 is connected in parallel with this electric capacity 312, and this diode 313 is connected in series with this resistance 311 and this electric capacity 312.
This circuit for power conversion 32 is provided with high frequency transformer 321, wherein, this high frequency transformer 321 is to be connected with resistance 311, electric capacity 312 and the diode 313 of this spiking absorption circuit 31 respectively, and further, this high frequency transformer 321 is connected with this output module 40 again.
This master control control circuit 33 is provided with master control power supply IC331, switching tube 332, optocoupler 333, TL431 voltage stabilizing IC334; wherein; this master control power supply IC331 is connected with the smoothed filter circuit 14 of this overvoltage/undervoltage protection module 20, this input module 10 respectively; again; this master control power supply IC331 is connected in series with resistance, electric capacity and this switching tube 332 and this optocoupler 333 of predetermined number; further, this TL431 voltage stabilizing IC334 is connected with resistance, the capacitances in series of this optocoupler 333 and predetermined number again.
As shown in Figure 5, this output module 40 comprises, two groups of output circuits 41 and 42, wherein one group of output circuit 41 comprises secondary rectification circuit 411, smoothed filter circuit 412, secondary voltage stabilizing circuit 413, wherein, this secondary rectification circuit 411 is to be connected with the high frequency transformer 321 of this circuit for power conversion 32, and this smoothed filter circuit 412 is connected with this secondary rectification circuit 411, this secondary voltage stabilizing circuit 413, again, secondary voltage stabilizing circuit 413 is connected with output wiring terminal 43.
Another group output circuit 42 comprises secondary rectification circuit 421, smoothed filter circuit 422, high-frequency filter circuit 423, wherein, this secondary rectification circuit 421 is to be connected with the high frequency transformer 321 of this circuit for power conversion 32, and this smoothed filter circuit 422 is connected with this secondary rectification circuit 421, high-frequency filter circuit 423, further, this high-frequency filter circuit 423 is connected with this control module 30, output wiring terminal 43 again.
As shown in Figure 6; this input module 10, overvoltage/undervoltage protection module 20, control module 30, output module 40 are arranged on the same pcb board 50; and this pcb board 50 is provided with location hole 51; can be arranged in the communication equipment, and these pcb board 50 two ends respectively are provided with input wires terminal 52, output wiring terminal 53.This input wires terminal 52 is connected with this input module 10, and again, this output wiring terminal 53 is connected with this output module 40.
Nationality is by above-mentioned each element and connected mode thereof; the beneficial effects of the utility model are: the utility model; adopt state-of-the-art pwm chip; the utility model provides a kind of and imported; the under-voltage protection communication power supply; it structurally comprises; input module; the overvoltage/undervoltage protection module; control module; output module; wherein; this overvoltage/undervoltage protection module is connected with this input module and this control module; wherein; this overvoltage/undervoltage protection module is made up of discrete electronic devices and components; by its unique design; it has solved the traditional communication power supply because the input cell voltage is too high or too low, and circuit occurs; the problem that battery and power supply itself damages makes the utility model when overvoltage/undervoltage appears in input; energy is protection circuit effectively; battery and power supply itself; its circuit adopts discrete component; electronic switch design is realized the overvoltage/undervoltage defencive function, and it is simple in structure, and cost is lower; rapid dynamic response speed.
Claims (7)
- One kind imported, the under-voltage protection communication power supply, it is characterized in that: it comprises, input module, overvoltage/undervoltage protection module, control module, output module, wherein, this overvoltage/undervoltage protection module is connected with this input module and this control module,This input module comprises, power access circuit, secondary high-frequency filter circuit, input reverse-connection preventing circuit and smoothed filter circuit,This input overvoltage/undervoltage module comprises protection circuit against input over-voltage and output under-voltage protecting circuit,This control module comprises; spiking absorbs circuit, circuit for power conversion, master control control circuit; wherein; it is to link to each other with the smoothed filter circuit of this input module that this spiking absorbs circuit; and this spiking absorbs circuit and is connected with this circuit for power conversion; this master control control circuit is to be connected with this smoothed filter circuit of this spiking absorption circuit, this circuit for power conversion, this input overvoltage/undervoltage protection module and this input module respectively againThis spiking absorbs circuit and comprises resistance, electric capacity, diode, and wherein, this resistance and this electric capacity are connected in parallel, and this diode is connected with this capacitances in series with this resistance,This circuit for power conversion is provided with high frequency transformer, and wherein, this high frequency transformer is to be connected with resistance, electric capacity and the diode of this spiking absorption circuit respectively, and this high frequency transformer is connected with this output module again,This master control control circuit is provided with master control power supply IC, switching tube, optocoupler, TL431 voltage stabilizing IC; wherein; this master control power supply IC is connected with this smoothed filter circuit of this overvoltage/undervoltage protection module, this input module respectively; again; this master control power supply IC be connected in series resistance, electric capacity and this switching tube and this optocoupler of predetermined number; this TL431 voltage stabilizing IC is connected with resistance, the capacitances in series of this optocoupler and predetermined numberThis output module comprises, two groups of output circuits, wherein one group of output circuit comprises secondary rectification circuit, smoothed filter circuit, secondary voltage stabilizing circuit, wherein, this secondary rectification circuit is to be connected with this high frequency transformer of this circuit for power conversion, and this smoothed filter circuit is connected with this secondary rectification circuit, this secondary voltage stabilizing circuit, and this secondary voltage stabilizing circuit is connected with output wiring terminalAnother group output circuit of this output module comprises secondary rectification circuit, smoothed filter circuit, high-frequency filter circuit, wherein, this secondary rectification circuit is to be connected with this high frequency transformer of this circuit for power conversion, and this smoothed filter circuit is connected with this secondary rectification circuit, this high-frequency filter circuit, and this high-frequency filter circuit is connected with this control module, output wiring terminal.
- 2. as claimed in claim 1ly a kind ofly imported, the under-voltage protection communication power supply; it is characterized in that; this input module, this overvoltage/undervoltage protection module, this control module, this output module are arranged on the same pcb board; and this pcb board is provided with location hole; can be arranged in the communication equipment, and these pcb board two ends respectively are provided with input, output wiring terminal.
- 3. as claimed in claim 1ly a kind ofly imported, the under-voltage protection communication power supply; it is characterized in that: this protection circuit against input over-voltage comprises some resistance, electric capacity, TL431 voltage stabilizing IC and triode, and this protection circuit against input over-voltage links to each other with this control module by this triode of this protection circuit against input over-voltage.
- 4. as claimed in claim 1ly a kind ofly imported, the under-voltage protection communication power supply; it is characterized in that: this output under-voltage protecting circuit is made up of some resistance, three-terminal voltage-stabilizing IC, triode and voltage stabilizing didoe, and this output under-voltage protecting circuit links to each other with control module by this triode of this output under-voltage protecting circuit.
- 5. as claimed in claim 1ly a kind ofly imported, the under-voltage protection communication power supply; it is characterized in that: this input reverse-connection preventing circuit of this input module is made up of a Schottky diode; be connected between this high-frequency filter circuit and this smoothed filter circuit, be connected with a fuse between this power access circuit and this high-frequency filter circuit.
- 6. as claimed in claim 1ly a kind ofly imported, the under-voltage protection communication power supply, it is characterized in that: this secondary voltage stabilizing circuit of this output module is by resistance, electric capacity, metal-oxide-semiconductor, the TL431 voltage stabilizing IC of the predetermined quantity connection that is in series.
- 7. as claimed in claim 1ly a kind ofly imported, the under-voltage protection communication power supply; it is characterized in that: this high-frequency filter circuit of this output module is provided with the high frequency common mode filter, between this high frequency common mode filter connection and this smoothed filter circuit and this output splicing ear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205272495U CN201766506U (en) | 2010-09-10 | 2010-09-10 | Communication power supply with input overvoltage/undervoltage protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205272495U CN201766506U (en) | 2010-09-10 | 2010-09-10 | Communication power supply with input overvoltage/undervoltage protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201766506U true CN201766506U (en) | 2011-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205272495U Expired - Fee Related CN201766506U (en) | 2010-09-10 | 2010-09-10 | Communication power supply with input overvoltage/undervoltage protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201766506U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102662337A (en) * | 2012-05-07 | 2012-09-12 | 无锡智卓电气有限公司 | Controller for controlling protected switch |
| CN111509498A (en) * | 2020-05-11 | 2020-08-07 | 任丘市物仪电子有限公司 | Safety instrument power cord |
-
2010
- 2010-09-10 CN CN2010205272495U patent/CN201766506U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102662337A (en) * | 2012-05-07 | 2012-09-12 | 无锡智卓电气有限公司 | Controller for controlling protected switch |
| CN111509498A (en) * | 2020-05-11 | 2020-08-07 | 任丘市物仪电子有限公司 | Safety instrument power cord |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHENZHEN BOULDER ELECTRONIC CO., LTD. Assignor: Wang Xiaofeng Contract record no.: 2011440020274 Denomination of utility model: Communication power supply with input overvoltage/undervoltage protection Granted publication date: 20110316 License type: Exclusive License Record date: 20110705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20150910 |
|
| EXPY | Termination of patent right or utility model |