CN205178499U - Direct current excessive pressure surge suppressor - Google Patents
Direct current excessive pressure surge suppressor Download PDFInfo
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- CN205178499U CN205178499U CN201521052526.0U CN201521052526U CN205178499U CN 205178499 U CN205178499 U CN 205178499U CN 201521052526 U CN201521052526 U CN 201521052526U CN 205178499 U CN205178499 U CN 205178499U
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Abstract
The utility model discloses a direct current excessive pressure surge suppressor, include direct current input voltage source, direct current reference voltage source, hold transient state suppression circuit and the DCDC converting circuit who meets with direct current input voltage source follower to and the excessive pressure surge inhibiting module who connects with transient state suppression circuit's output and direct current reference voltage source's output homogeneous phase, excessive pressure surge inhibiting module includes comparator, buffer circuit and the MOSFET switch circuit who connects gradually, the input of comparator meets with transient state suppression circuit's output and direct current reference voltage source's output respectively, and the comparator meets with DCDC converting circuit and is just supplied power by DCDC converting circuit, and buffer circuit connects with DCDC converting circuit and direct current reference voltage source homogeneous phase, direct current reference voltage source is direct current steady voltage source E1, the utility model relates to a novelty has the function of real -time detection direct current input voltage excessive pressure, can restrain direct current surge excessive pressure spike voltage in the twinkling of an eye, and the practicality is strong.
Description
Technical field
The utility model belongs to DC over-voltage suppression technology field, is specifically related to a kind of DC over-voltage surge suppressor.
Background technology
Along with the development of science and technology, a large amount of large power-consuming equipments is widely used in each place of productive life, for load increase or reduce and all can cause the fluctuation of line voltage, during peak times of power consumption, voltage is often on the low side, when having an equipment downtime, voltage is often higher, and the normal power consumption equipment generation instantaneous stop run can cause output voltage unstable; Because the increase and decrease phenomenon of various load emerges in an endless stream; make ac output voltage unstable; during routine use power supply; no matter be that direct current exports or exchanges output; all can set up power protecting circuit between power supply and power consumption equipment; effective suppression overvoltage surge fault; most DC over-voltage surge suppressor many employings over-voltage detection circuit on market; when there is overvoltage surge fault; the output of cut-ff voltage, cuts off the electricity supply, although protect the damage of power consumption equipment from overvoltage phenomenon; but equipment can be caused to stop transport, cause unnecessary trouble to productive life.Therefore, nowadays lack the DC over-voltage surge suppressor that a kind of structure is simple, volume is little, cost is low, reasonable in design, when input direct voltage is in normal range (NR), output voltage follows input voltage, and direct voltage normally exports; When input direct voltage presents overvoltage surge voltage; transient suppress can the voltage of inhibitory mutagenesis, and use high-power MOSFET tube make the direct voltage of output by clamp, reduce output voltage; realize DC over-voltage to suppress, protection power consumption equipment is not by excessive pressure damages.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of DC over-voltage surge suppressor is provided, it is rationally novel in design, structure is simple, there is the function detecting DC input voitage overvoltage in real time, direct current surge over voltage momentary spikes voltage can be suppressed, practical, be convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of DC over-voltage surge suppressor, it is characterized in that: comprise DC input voitage source, DC reference voltage source, the transient suppress connected with described DC input voitage source output terminal and DC/DC change-over circuit, and the overvoltage surge suppression module all to connect with the output of described transient suppress and the output in described DC reference voltage source, described overvoltage surge suppression module comprises the comparator, buffer circuit and the switch mosfet circuit that connect successively; The input of described comparator connects with the output of described transient suppress and the output in described DC reference voltage source respectively, described comparator connects with described DC/DC change-over circuit and is powered by DC/DC change-over circuit, and described buffer circuit all connects with DC/DC change-over circuit and DC reference voltage source; Described DC reference voltage source is direct-flow voltage regulation source E1, described transient suppress comprises electric capacity C1, inductance L 1 and voltage stabilizing didoe D2, two-way is divided in one end of described inductance L 1, and a road connects with the signal output part in DC input voitage source, and another road is through electric capacity C1 ground connection; The other end of inductance L 1 divides two-way, and a road connects with the negative electrode of voltage stabilizing didoe D2, and another road is the signal output part of transient suppress.
Above-mentioned a kind of DC over-voltage surge suppressor, it is characterized in that: described DC/DC change-over circuit comprises voltage conversion chip SX3600, the Vin pin of described voltage conversion chip SX3600 divides two-way, one tunnel connects with the signal output part of transient suppress, and another road connects with one end of electric capacity C4 in parallel and electric capacity C5; Electric capacity C4 in parallel and the other end ground connection of electric capacity C5, the OUT pin of pressure conversion chip SX3600 divides two-way, and a road connects with the negative electrode of diode D1, and another road connects through inductance L 2 one end with electric capacity C6 in parallel and electric capacity C2; Inductance L 2 and the link of one end of electric capacity C6 in parallel and electric capacity C2 are the 12V power output end of DC/DC change-over circuit, electric capacity C6 in parallel and the other end of electric capacity C2 and the equal ground connection of anode and cathode of diode D1.
Above-mentioned a kind of DC over-voltage surge suppressor, it is characterized in that: described comparator comprises amplifier U2, the in-phase input end of described amplifier U2 divides two-way, and a road connects with the negative electrode of diode D4, and another road is through resistance R4 ground connection; The anode of diode D4 connects with the signal output part of transient suppress through resistance R1, the inverting input of amplifier U2 divides two-way, one tunnel connects with the negative electrode of voltage stabilizing didoe D5, and another road connects with the signal output part of direct-flow voltage regulation source E1 through resistance R2, the plus earth of voltage stabilizing didoe D5.
Above-mentioned a kind of DC over-voltage surge suppressor, it is characterized in that: described buffer circuit comprises isolating chip U1,1st pin of described isolating chip U1 connects with the 12V power output end of DC/DC change-over circuit through resistance R3,2nd pin of isolating chip U3 connects with the output of amplifier U1, and the 4th pin of isolating chip U1 connects with the signal output part of direct-flow voltage regulation source E1.
Above-mentioned a kind of DC over-voltage surge suppressor, is characterized in that: described switch mosfet circuit comprises MOSFET pipe Q1.
Above-mentioned a kind of DC over-voltage surge suppressor, is characterized in that: described MOSFET pipe Q1 is IRF530N, and the grid of described IRF530N connects with the 3rd pin of isolating chip U1.
Above-mentioned a kind of DC over-voltage surge suppressor, it is characterized in that: also comprise voltage hold circuit, described voltage hold circuit is made up of electric capacity C3 and voltage stabilizing didoe D3, one end of described electric capacity C3 and the negative electrode of described voltage stabilizing didoe D3 all connect with the source electrode of IRF530N, the other end of electric capacity C3 and the equal ground connection of anode of voltage stabilizing didoe D3.
The utility model compared with prior art has the following advantages:
1, the utility model is by arranging transient suppress, uses inductance L 1 denoising, adopts the peak voltage of voltage stabilizing didoe D2 inhibitory mutagenesis, speed is fast, avoid the fast-changing voltage signal of switch mosfet circuit because and mislead, circuit is simple, is convenient to promote the use of.
2, the utility model compares the direct voltage of transient suppress output and the size of data in DC reference voltage source in real time by arranging comparator, amplifier U2 is adopted to gather direct voltage data variation, and by the photoelectricity transmission of buffer circuit, realize the transmission of signal fast, when the direct voltage data that the transient suppress gathered exports are less than DC reference voltage source data, the conducting of MOSFET pipe; When the direct voltage data that transient suppress exports are greater than DC reference voltage source data, MOSFET pipe ends, and reliable and stable, result of use is good.
3, the utility model is by arranging DC/DC change-over circuit, and adopt voltage conversion chip SX3600 that High Level DC Voltage is converted to 12V DC power supply, voltage withstand voltage is high, uses stable.
4, the utility model is rationally novel in design, and volume is little, and use element few, wiring is convenient, practical, is convenient to promote the use of.
In sum, the utility model is rationally novel in design, and structure is simple, use element is few, reliability is high, cost is low, have the function detecting DC input voitage overvoltage in real time, direct current surge over voltage momentary spikes voltage can be suppressed, practical, be convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Description of reference numerals:
1-DC input voitage source; 2-transient suppress; 3-DC reference voltage source;
4-comparator; 5-DC/DC change-over circuit; 6-buffer circuit;
7-switch mosfet circuit.
Embodiment
As depicted in figs. 1 and 2, the utility model comprises DC input voitage source 1, DC reference voltage source 3, the transient suppress 2 connected with described DC input voitage source 1 output and DC/DC change-over circuit 5, and the overvoltage surge suppression module all to connect with the output of described transient suppress 2 and the output in described DC reference voltage source 3, described overvoltage surge suppression module comprises the comparator 4, buffer circuit 6 and the switch mosfet circuit 7 that connect successively; The input of described comparator 4 connects with the output of described transient suppress 2 and the output in described DC reference voltage source 3 respectively, described comparator 4 connects with described DC/DC change-over circuit 5 and is powered by DC/DC change-over circuit 5, and described buffer circuit 6 all connects with DC/DC change-over circuit 5 and DC reference voltage source 3; Described DC reference voltage source 3 is direct-flow voltage regulation source E1, described transient suppress 2 comprises electric capacity C1, inductance L 1 and voltage stabilizing didoe D2, two-way is divided in one end of described inductance L 1, and a road connects with the signal output part in DC input voitage source 1, and another road is through electric capacity C1 ground connection; The other end of inductance L 1 divides two-way, and a road connects with the negative electrode of voltage stabilizing didoe D2, and another road is the signal output part of transient suppress 2.
As shown in Figure 2, in the present embodiment, described DC/DC change-over circuit 5 comprises voltage conversion chip SX3600, and the Vin pin of described voltage conversion chip SX3600 divides two-way, one tunnel connects with the signal output part of transient suppress 2, and another road connects with one end of electric capacity C4 in parallel and electric capacity C5; Electric capacity C4 in parallel and the other end ground connection of electric capacity C5, the OUT pin of pressure conversion chip SX3600 divides two-way, and a road connects with the negative electrode of diode D1, and another road connects through inductance L 2 one end with electric capacity C6 in parallel and electric capacity C2; Inductance L 2 and the link of one end of electric capacity C6 in parallel and electric capacity C2 are the 12V power output end of DC/DC change-over circuit 5, electric capacity C6 in parallel and the other end of electric capacity C2 and the equal ground connection of anode and cathode of diode D1.
In actual use; direct-flow voltage regulation source E1 is the adjustable direct-flow voltage regulation source of direct voltage; direct current suppression protection limit can be become for DC over-voltage inhibitor provides; adopt the 12V power supply that the voltage conversion chip SX3600 change-over circuit that voltage withstand voltage is high needs; meet the DC over-voltage limit of various distinct device; easy to adjust, simple to operate.
As shown in Figure 2, in the present embodiment, described comparator 4 comprises amplifier U2, and the in-phase input end of described amplifier U2 divides two-way, and a road connects with the negative electrode of diode D4, and another road is through resistance R4 ground connection; The anode of diode D4 connects with the signal output part of transient suppress 2 through resistance R1, the inverting input of amplifier U2 divides two-way, one tunnel connects with the negative electrode of voltage stabilizing didoe D5, and another road connects with the signal output part of direct-flow voltage regulation source E1 through resistance R2, the plus earth of voltage stabilizing didoe D5.
As shown in Figure 2, in the present embodiment, described buffer circuit 6 comprises isolating chip U1,1st pin of described isolating chip U1 connects with the 12V power output end of DC/DC change-over circuit 5 through resistance R3,2nd pin of isolating chip U3 connects with the output of amplifier U1, and the 4th pin of isolating chip U1 connects with the signal output part of direct-flow voltage regulation source E1.
As shown in Figure 2, in the present embodiment, described switch mosfet circuit 7 comprises MOSFET pipe Q1.
As shown in Figure 2, in the present embodiment, described MOSFET pipe Q1 is IRF530N, and the grid of described IRF530N connects with the 3rd pin of isolating chip U1.
As shown in Figure 2, in the present embodiment, also comprise voltage hold circuit, described voltage hold circuit is made up of electric capacity C3 and voltage stabilizing didoe D3, one end of described electric capacity C3 and the negative electrode of described voltage stabilizing didoe D3 all connect with the source electrode of IRF530N, the other end of electric capacity C3 and the equal ground connection of anode of voltage stabilizing didoe D3.
When the utility model uses, adopt transient suppress 2 to remove interference signal in DC input voitage source 1 and effectively suppress the peak voltage in DC input voitage source 1, make the reliable DC high voltage of stable output, directly direct current input is obtained from the stream high voltage after transient suppress 2 denoising by DC/DC change-over circuit 5, being converted into 12V power supply is that comparator 4 and buffer circuit 6 are powered, transient suppress 2 exports as direct-flow electricity utilization apparatus is powered, when the direct voltage that transient suppress 2 exports is in normal range (NR), the direct voltage that amplifier U2 gathers is less than the power voltage supply in DC reference voltage source 3, amplifier U2 exports electronegative potential, buffer circuit 6 conducting, MOSFET pipe Q1 conducting in switch mosfet circuit 7, by the voltage hold circuit that electric capacity C3 and voltage stabilizing didoe D3 forms, VD follows the input voltage in DC input voitage source, direct voltage normally exports, when there is suddenly overvoltage surge fault in the direct voltage inputted when DC input voitage source 1, transient suppress 2 suppresses peak voltage to gather overvoltage voltage fast, the direct voltage data that now amplifier U2 gathers are greater than the power voltage supply in DC reference voltage source 3, amplifier U2 exports high potential, Phototube Coupling in buffer circuit 5 is obstructed, MOSFET pipe Q1 in switch mosfet circuit 7 is obstructed, voltage between the drain electrode of MOSFET pipe Q1 and source electrode is caused to increase, inhibit direct current to export large voltage and export direct voltage by clamp, voltage hold circuit suppresses output voltage instantaneous variation again, the safe input voltage of protection power consumption equipment, volume is little, use device is few, effective.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection range of technical solutions of the utility model.
Claims (7)
1. a DC over-voltage surge suppressor, it is characterized in that: comprise DC input voitage source (1), DC reference voltage source (3), the transient suppress (2) connected with described DC input voitage source (1) output and DC/DC change-over circuit (5), and the overvoltage surge suppression module all to connect with the output of described transient suppress (2) and the output in described DC reference voltage source (3), described overvoltage surge suppression module comprises the comparator (4) connected successively, buffer circuit (6) and switch mosfet circuit (7), the input of described comparator (4) connects with the output of described transient suppress (2) and the output in described DC reference voltage source (3) respectively, described comparator (4) connects with described DC/DC change-over circuit (5) and is powered by DC/DC change-over circuit (5), and described buffer circuit (6) all connects with DC/DC change-over circuit (5) and DC reference voltage source (3), described DC reference voltage source (3) is direct-flow voltage regulation source E1, described transient suppress (2) comprises electric capacity C1, inductance L 1 and voltage stabilizing didoe D2, two-way is divided in one end of described inductance L 1, one tunnel connects with the signal output part of DC input voitage source (1), and another road is through electric capacity C1 ground connection, the other end of inductance L 1 divides two-way, and a road connects with the negative electrode of voltage stabilizing didoe D2, and another road is the signal output part of transient suppress (2).
2. according to a kind of DC over-voltage surge suppressor according to claim 1, it is characterized in that: described DC/DC change-over circuit (5) comprises voltage conversion chip SX3600, the Vin pin of described voltage conversion chip SX3600 divides two-way, one tunnel connects with the signal output part of transient suppress (2), and another road connects with one end of electric capacity C4 in parallel and electric capacity C5; Electric capacity C4 in parallel and the other end ground connection of electric capacity C5, the OUT pin of pressure conversion chip SX3600 divides two-way, and a road connects with the negative electrode of diode D1, and another road connects through inductance L 2 one end with electric capacity C6 in parallel and electric capacity C2; Inductance L 2 and the link of one end of electric capacity C6 in parallel and electric capacity C2 are the 12V power output end of DC/DC change-over circuit (5), electric capacity C6 in parallel and the other end of electric capacity C2 and the equal ground connection of anode and cathode of diode D1.
3. according to a kind of DC over-voltage surge suppressor according to claim 1, it is characterized in that: described comparator (4) comprises amplifier U2, the in-phase input end of described amplifier U2 divides two-way, and a road connects with the negative electrode of diode D4, and another road is through resistance R4 ground connection; The anode of diode D4 connects with the signal output part of transient suppress (2) through resistance R1, the inverting input of amplifier U2 divides two-way, one tunnel connects with the negative electrode of voltage stabilizing didoe D5, another road connects with the signal output part of direct-flow voltage regulation source E1 through resistance R2, the plus earth of voltage stabilizing didoe D5.
4. according to a kind of DC over-voltage surge suppressor according to claim 3, it is characterized in that: described buffer circuit (6) comprises isolating chip U1,1st pin of described isolating chip U1 connects with the 12V power output end of DC/DC change-over circuit (5) through resistance R3,2nd pin of isolating chip U3 connects with the output of amplifier U1, and the 4th pin of isolating chip U1 connects with the signal output part of direct-flow voltage regulation source E1.
5. according to a kind of DC over-voltage surge suppressor according to claim 4, it is characterized in that: described switch mosfet circuit (7) comprises MOSFET pipe Q1.
6. according to a kind of DC over-voltage surge suppressor according to claim 5, it is characterized in that: described MOSFET pipe Q1 is IRF530N, the grid of described IRF530N connects with the 3rd pin of isolating chip U1.
7. according to a kind of DC over-voltage surge suppressor according to claim 6, it is characterized in that: also comprise voltage hold circuit, described voltage hold circuit is made up of electric capacity C3 and voltage stabilizing didoe D3, one end of described electric capacity C3 and the negative electrode of described voltage stabilizing didoe D3 all connect with the source electrode of IRF530N, the other end of electric capacity C3 and the equal ground connection of anode of voltage stabilizing didoe D3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521052526.0U CN205178499U (en) | 2015-12-16 | 2015-12-16 | Direct current excessive pressure surge suppressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521052526.0U CN205178499U (en) | 2015-12-16 | 2015-12-16 | Direct current excessive pressure surge suppressor |
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| Publication Number | Publication Date |
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| CN205178499U true CN205178499U (en) | 2016-04-20 |
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| CN201521052526.0U Active CN205178499U (en) | 2015-12-16 | 2015-12-16 | Direct current excessive pressure surge suppressor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676828A (en) * | 2019-11-04 | 2020-01-10 | 中国振华集团永光电子有限公司（国营第八七三厂） | Direct current surge suppression circuit |
| CN113687676A (en) * | 2020-05-18 | 2021-11-23 | 贵州振华群英电器有限公司（国营第八九一厂） | Direct current transient surge voltage suppression module |
| CN113972623A (en) * | 2021-09-29 | 2022-01-25 | 中国兵器装备集团上海电控研究所 | Direct current surge suppression circuit based on NMOS pipe |
-
2015
- 2015-12-16 CN CN201521052526.0U patent/CN205178499U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676828A (en) * | 2019-11-04 | 2020-01-10 | 中国振华集团永光电子有限公司（国营第八七三厂） | Direct current surge suppression circuit |
| CN113687676A (en) * | 2020-05-18 | 2021-11-23 | 贵州振华群英电器有限公司（国营第八九一厂） | Direct current transient surge voltage suppression module |
| CN113972623A (en) * | 2021-09-29 | 2022-01-25 | 中国兵器装备集团上海电控研究所 | Direct current surge suppression circuit based on NMOS pipe |
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