CN209767150U - Lightning protection and data loss prevention driving circuit and power supply - Google Patents
Lightning protection and data loss prevention driving circuit and power supply Download PDFInfo
- Publication number
- CN209767150U CN209767150U CN201920683160.9U CN201920683160U CN209767150U CN 209767150 U CN209767150 U CN 209767150U CN 201920683160 U CN201920683160 U CN 201920683160U CN 209767150 U CN209767150 U CN 209767150U
- Authority
- CN
- China
- Prior art keywords
- circuit
- power supply
- signal
- lightning
- varistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
the utility model relates to a drive circuit and power of lightning protection and data loss prevention, include: a first absorption circuit connected to the AC input line for absorbing energy in the lightning strike signal when the power source encounters the lightning strike signal; the leakage circuit is connected with the alternating current input line and is used for leaking the lightning stroke signal to the ground when the power supply encounters the lightning stroke signal; a second absorption circuit connected to the AC input line for absorbing energy in the lightning strike signal when the power supply encounters the lightning strike signal; a rectifying circuit connected to the second absorption circuit and rectifying an ac signal input from the ac input line to output a rectified signal; the power supply processing circuit is connected with the rectifying circuit and is used for processing the rectifying signal so as to output a power supply signal to the output end of the power supply; and the anti-interference circuit is connected with the output end of the power supply and is used for filtering the interference signal at the output end of the power supply when the power supply encounters a lightning stroke signal. By implementing the driving circuit, the effects of preventing high-voltage lightning stroke and avoiding the damage of elements in the power supply can be achieved, the flood interference of power supply signals output by the power supply can be reduced, and the data loss or abnormal restart of a terminal product is prevented.
Description
Technical Field
the utility model relates to a technical field of power, more specifically say, relate to a drive circuit and power that lightning protection and data loss are prevented.
Background
with the continuous expansion of the application field of electrical products, the climate is more and more severe from indoor to outdoor, from low to high mountain, from land to sea; tropical rainforests, marine climates, lightning weather occur frequently; the lightning protection performance requirements of wired or wireless electric appliance terminal products such as security electric appliance terminal products, network IT electric appliance terminal products and the like are higher and higher; the lightning protection performance of the power supply is improved, the stability of the whole electronic system (POE) is maintained and the electronic system is not influenced by lightning, data packets are lost, the information storage is safe, and unnecessary property loss is caused. Therefore, a circuit which can meet the lightning protection requirement and avoid POE data loss needs to be designed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, provide a drive circuit and power that lightning protection and data loss are prevented.
The utility model provides a technical scheme that its technical problem adopted is: a drive circuit for preventing lightning and data loss is constructed, which is applied to a power supply and comprises:
A first absorption circuit connected to the AC input line for absorbing energy in the lightning strike signal when the power source encounters the lightning strike signal;
The leakage circuit is connected with the alternating current input line and is used for leaking the lightning stroke signal to the ground when the power supply encounters the lightning stroke signal;
a second absorption circuit connected to the AC input line for absorbing energy in the lightning strike signal when the power source encounters the lightning strike signal;
a rectifier circuit connected to the second absorption circuit and rectifying an ac signal input from the ac input line to output a rectified signal;
The power supply processing circuit is connected with the rectifying circuit and is used for processing the rectifying signal so as to output a power supply signal to the output end of the power supply;
and the anti-interference circuit is connected with the output end of the power supply and is used for filtering the interference signal at the output end of the power supply when the power supply encounters a lightning stroke signal.
Wherein the AC input line includes: live and neutral lines; the second absorption circuit includes: a first absorption capacitor CX101, a second absorption capacitor CX102, a second common-mode inductor LF102, a third common-mode inductor LF103, and a third absorption capacitor C103;
A first end of the second absorption capacitor CX102 is connected with the live wire, and a second end of the second absorption capacitor CX102 is connected with the zero wire; a first end of the third common-mode inductor LF103 is connected to a first end of the second absorption capacitor CX102 of the live wire, a third end of the third common-mode inductor LF103 is connected to a second end of the second common-mode inductor LF102, a fourth end of the third common-mode inductor LF103 is connected to the zero line and a second end of the second absorption capacitor CX102, a second end of the third common-mode inductor LF103 is connected to a third end of the second common-mode inductor LF102, a first end of the second common-mode inductor LF102 is connected to the first input end of the rectifier circuit, and a fourth end of the second common-mode inductor LF102 is connected to the second input end of the rectifier circuit;
the first end of the third absorption capacitor C103 is connected to the high-voltage output port of the power processing circuit, and the second end of the third absorption capacitor C103 is grounded.
wherein the first sinking circuit comprises: a first varistor MOV101, a third varistor MOV103, a fifth varistor MOV 105;
A first end of the third varistor MOV103 is connected with a live wire of the alternating current input line, and a second end of the third varistor MOV103 is connected with a zero wire of the alternating current input line;
A first end of the first varistor MOV101 is connected with a live wire of the alternating current input line and a first input end of the rectifying circuit, and a second end of the first varistor MOV101 is connected with a second input end of the rectifying circuit of a zero wire of the alternating current input line;
A first end of the fifth varistor MOV105 is connected to a first output of the rectifier circuit and a second end of the fifth varistor MOV105 is connected to a second output of the rectifier circuit.
Wherein the bleeder circuit comprises a varistor and a discharge tube; or the bleeder circuit comprises a discharge tube.
wherein the bleeding circuit comprises: a second varistor MOV102, a fourth varistor MOV104 and a discharge tube GC 101;
a first end of the second varistor MOV102 is connected to the neutral line of the ac input line, and a second end of the second varistor MOV102 is connected to a first end of the discharge tube GC 101;
a first terminal of the fourth varistor MOV104 is connected to the live line of the ac input line, a second terminal of the fourth varistor MOV104 is connected to the first terminal of the discharge tube GC101, and a second terminal of the discharge tube GC101 is grounded.
The discharge tube GC101 is a gas discharge tube or a solid discharge tube.
wherein the immunity circuit includes: a first filter capacitor CY201 and a second filter capacitor CY 202;
a first end of the first filter capacitor CY201 is connected to a positive output end of the power supply, and a second end of the first filter capacitor CY201 is grounded;
A first end of the second filter capacitor CY202 is connected to a negative output end of the power supply, and a second end of the second filter capacitor CY202 is grounded.
Wherein, still include: the overcurrent protection circuit is arranged at the input end of the alternating current input line;
The overcurrent protection circuit includes: a first fuse F101 and a second fuse F102;
the first fuse F101 is connected to the live wire of the AC input line, and the second fuse F102 is connected to the neutral wire of the AC input line.
wherein, still include: an EMI filter circuit for performing EMI filtering processing on an input alternating current signal;
The EMI filter circuit includes: a fourth capacitance CY104 and a fifth capacitance CY 105;
A first end of the fourth capacitor CY104 is connected to the live line of the ac input line, a second end of the fourth capacitor CY104 and a first end of the fifth capacitor CY105 are grounded, and a second end of the fifth capacitor CY105 is connected to the neutral line of the ac input line.
The utility model also provides a power, including above the drive circuit of lightning protection and data loss prevention.
implement the utility model discloses a drive circuit of lightning protection and prevent data loss has following beneficial effect: the lightning and data loss prevention driving circuit comprises: a first absorption circuit connected to the AC input line for absorbing energy in the lightning strike signal when the power source encounters the lightning strike signal; the leakage circuit is connected with the alternating current input line and is used for leaking the lightning stroke signal to the ground when the power supply encounters the lightning stroke signal; a second absorption circuit connected to the AC input line for absorbing energy in the lightning strike signal when the power supply encounters the lightning strike signal; a rectifying circuit connected to the second absorption circuit and rectifying an ac signal input from the ac input line to output a rectified signal; the power supply processing circuit is connected with the rectifying circuit and is used for processing the rectifying signal so as to output a power supply signal to the output end of the power supply; and the anti-interference circuit is connected with the output end of the power supply and is used for filtering the interference signal at the output end of the power supply when the power supply encounters a lightning stroke signal. By implementing the driving circuit, the effects of preventing high-voltage lightning stroke and avoiding the damage of elements in the power supply can be achieved, the flood interference of power supply signals output by the power supply can be reduced, and the data loss or abnormal restart of a terminal product is prevented.
drawings
The invention will be further explained with reference to the drawings and examples, wherein:
Fig. 1 is a schematic structural diagram of an embodiment of a driving circuit for preventing lightning and data loss according to the present invention;
FIG. 2 is a schematic structural diagram of another embodiment of the driving circuit for preventing lightning and data loss according to the present invention;
FIG. 3 is a schematic circuit diagram of a portion of the drive circuit for preventing lightning and data loss according to the present invention;
Fig. 4 is another circuit schematic diagram of the driving circuit for preventing lightning and data loss according to the present invention.
Detailed Description
For a clearer understanding of the technical features, objects, and effects of the present invention, reference will now be made to the accompanying drawings.
Referring to fig. 1, the utility model provides a drive circuit of lightning protection and data loss prevention, this drive circuit can be applied to in the power design, and set up this lightning protection and prevent that drive circuit's of data loss power can give security protection electrical apparatus terminal product, network IP electrical apparatus end product etc. are wired or wireless electrical apparatus terminal product provides drive signal, and can maintain whole electronic system (POE terminal system) and can receive drive signal steadily, and can reduce the miscellaneous flood interference among the signal transmission process, avoided leading to POE terminal data package to lose or the problem of restarting unusually because of receiving miscellaneous flood interference.
As shown in fig. 1, the driving circuit for preventing lightning and data loss includes: a first absorption circuit 101 connected to the ac input line for absorbing energy in the lightning strike signal when the power source encounters the lightning strike signal; a bleeder circuit 103 connected to the AC input line for bleeding the lightning strike signal to ground when the power supply encounters the lightning strike signal; a second absorption circuit 102 connected to the AC input line for absorbing energy in the lightning strike signal when the power source encounters the lightning strike signal; a rectifier circuit 104 connected to the second absorption circuit 102, and rectifying an ac signal input from the ac input line to output a rectified signal; a power supply processing circuit 105 connected to the rectifier circuit 104 and processing the rectified signal to output a power supply signal to an output terminal of the power supply; and an anti-jamming circuit 106 connected to the output of the power supply for filtering a jamming signal at the output of the power supply when the power supply encounters a lightning strike signal.
it will be appreciated that the lightning strike signal is typically a high voltage surge signal, typically a differential mode high voltage lightning strike signal and a common mode high voltage lightning strike signal.
Wherein, the utility model discloses a set up first absorption circuit 101, can absorb the partial energy of differential mode high pressure thunderbolt signal when the power meets differential mode high pressure thunderbolt signal, reduce the influence of flow signal to the back stage circuit device; meanwhile, the differential mode high-voltage lightning stroke signal is discharged to the ground through the discharge circuit 103, the lightning stroke resistance of the power supply can be greatly improved, the second absorption circuit 102 is further arranged, the residual energy of the differential mode high-voltage lightning stroke signal can be absorbed, the influence of the lightning stroke signal on the power supply is effectively reduced, and the power supply is effectively protected.
In addition, when the power supply encounters a common-mode high-voltage lightning strike signal, most energy of the common-mode high-voltage lightning strike signal can be discharged to the ground through the discharge circuit 103, so that the influence of the common-mode high-voltage lightning strike signal on the power supply is effectively reduced, and the power supply can have a lightning protection function. Further, when the power meets with common mode high pressure thunderbolt signal, behind bleeder circuit 103's the effect of bleeding, because produce very big potential difference between the output voltage of earth and power output end, cause to interfere with miscellaneous flood, should interfere miscellaneous flood great to POE terminal product's influence, if lead to POE terminal data to lose or restart etc., consequently, the utility model discloses a set up anti jamming circuit 106 at the output of power, carry out the filtering to interfering miscellaneous flood to can effectively reduce and eliminate even interfering miscellaneous flood, guarantee POE terminal normal work and data transmission, prevent data loss. Moreover, the anti-interference circuit 106 can also absorb the residual energy of the common-mode high-voltage lightning stroke signal, so that the lightning protection effect of the power supply is further improved.
Optionally, in the embodiment of the present invention, the bleeding circuit 103 may include a voltage dependent resistor and a discharge tube, or the bleeding circuit 103 may also be implemented by only a discharge tube, or the bleeding circuit 103 may also be implemented by a TVS transistor and a discharge tube. Wherein, the utility model discloses the discharge tube that the embodiment adopted can adopt gas discharge tube or adopt solid discharge tube.
Further, as shown in fig. 2, the driving circuit for preventing lightning and data loss may further include: and an overcurrent protection circuit 107 provided at an input terminal of the ac input line. The overcurrent protection circuit 107 can be directly disconnected when the power input end is overcurrent, so that the connection between the input end and a rear-stage circuit is cut off, and the situation that high current enters the rear-stage circuit of the power supply to damage internal components is avoided.
Further, as shown in fig. 2, the driving circuit for preventing lightning and data loss may further include: and an EMI filter circuit 108 for performing EMI filtering processing on the input ac signal. By arranging the EMI filter circuit 108, the interference and influence of EMI signals on the circuit can be reduced, and the stability and reliability of circuit signals can be improved.
the following description will be given with reference to a specific example. As shown in fig. 3 and 4:
Referring to fig. 3 and 4, the ac input line includes: a live line (L) and a neutral line (N).
The first absorption circuit 101 includes: a first varistor MOV101, a third varistor MOV103, a fifth varistor MOV 105.
the second snubber circuit 102 circuit includes: a first absorption capacitance CX101, a second absorption capacitance CX102, a second common-mode inductance LF102, a third common-mode inductance LF103, and a third absorption capacitance C103.
The bleeding circuit 103 includes: a second varistor MOV102, a fourth varistor MOV104 and a discharge tube GC 101.
The immunity circuit 106 includes: a first filter capacitor CY201 and a second filter capacitor CY 202.
The rectifier circuit 104 includes a rectifier bridge BD 101.
The power supply processing circuit 105 includes: the device comprises a PFC transformer, a PFC PWM control integrated circuit, a main transformer, an LLC PWM control integrated circuit, a secondary rectification filter circuit, a secondary sampling voltage-stabilizing integrated circuit and a primary photoelectric coupling integrated circuit.
The overcurrent protection circuit 107 includes: a first fuse F101 and a second fuse F102.
The EMI filter circuit 108 includes: a fourth capacitance CY104 and a fifth capacitance CY 105.
Specifically, as shown in fig. 3 and 4:
the first fuse F101 is connected to the live wire of the AC input line, and the second fuse F102 is connected to the neutral wire of the AC input line.
A first end of the third varistor MOV103 is connected to the live line of the ac input line and a second end of the third varistor MOV103 is connected to the neutral line of the ac input line. Further, as shown in fig. 3, the first terminal of the third varistor MOV103 is further connected to the second terminal of the first fuse F101, and the second terminal of the third varistor MOS103 is further connected to the second terminal of the second fuse F101.
A first end of the first varistor MOV101 is connected to the live line of the ac input line and a first input end of the rectifier circuit 104 (i.e., pin 3 of the rectifier bridge BD 101), and a second end of the first varistor MOV101 is connected to a second input end of the rectifier circuit 104 (i.e., pin 2 of the rectifier bridge BD 101) of the neutral line of the ac input line.
A first terminal of the fifth varistor MOV105 is connected to a first output terminal of the rectifier circuit 104 (i.e. pin 1 of the rectifier bridge BD 101), and a second terminal of the fifth varistor MOV105 is connected to a second output terminal of the rectifier circuit 104 (i.e. pin 4 of the rectifier bridge BD 101).
a first end of the second absorption capacitor CX102 is connected to the live line, and a second end of the second absorption capacitor CX102 is connected to the neutral line.
The first end of the third common mode inductor LF103 is connected with the first end of the second absorption capacitor CX102 of the live wire, the third end of the third common mode inductor LF103 is connected with the second end of the second common mode inductor LF102, the fourth end of the third common mode inductor LF103 is connected with the second end of the zero line and the second absorption capacitor CX102, the second end of the third common mode inductor LF103 is connected with the third end of the second common mode inductor LF102, the first end of the second common mode inductor LF102 is connected with the first input end of the rectification circuit 104, and the fourth end of the second common mode inductor LF102 is connected with the second input end of the rectification circuit 104. As shown in fig. 3, the second absorption capacitor CX102 is disposed behind the third voltage-sensitive tube MOV103, i.e. the signal passes through the third voltage-sensitive tube MOV103 first and the second absorption capacitor CX102 later, relative to the input end of the ac input line.
A first end of the third absorption capacitor C103 is connected to a high-voltage output port of the power processing circuit 105 (where the high-voltage output port of the power processing circuit 105 is a high-voltage output port of the PFC transformer (i.e., 380VDC in fig. 4)), and a second end of the third absorption capacitor C103 is grounded.
a first terminal of the second varistor MOV102 is connected to the neutral line of the ac input line, and a second terminal of the second varistor MOV102 is connected to a first terminal of the discharge tube GC 101.
A first terminal of the fourth varistor MOV104 is connected to the live line of the ac input line, a second terminal of the fourth varistor MOV104 is connected to the first terminal of the discharge tube GC101, and a second terminal of the discharge tube GC101 is grounded.
A first terminal of the first filter capacitor CY201 is connected to a positive output terminal (VOUT + shown in fig. 4) of the output terminal of the power supply, and a second terminal of the first filter capacitor CY201 is grounded.
A first terminal of the second filter capacitor CY202 is connected to a negative output terminal (VOUT — shown in fig. 4) of the output terminal of the power supply, and a second terminal of the second filter capacitor CY202 is grounded.
A first end of the fourth capacitor CY104 is connected to the live line of the ac input line, a second end of the fourth capacitor CY104 and a first end of the fifth capacitor CY105 are grounded, and a second end of the fifth capacitor CY105 is connected to the neutral line of the ac input line.
The specific working principle is as follows:
1. When a differential mode high-voltage lightning stroke signal is input from an L line, part of energy returns to an N line after being absorbed by the third varistor MOV103, the first varistor MOV101 and the fifth varistor MOV 105; in addition, a part of energy can be absorbed and released to the ground by the fourth piezoresistor and the discharge tube GC101, so that the resistance to the differential mode lightning stroke of the L line to the N line is greatly improved; and a small part of residual energy returns to the N line after being consumed by the first absorption capacitor CX101, the second absorption capacitor CX102, the common mode inductor LF103 and the third capacitor C103, wherein the rectifier bridge BD101 can also play a role in absorbing energy, so that the impact of a differential mode high-voltage lightning stroke signal on a power supply is effectively reduced.
2. When a differential mode high-voltage lightning stroke signal is input from the N line, part of energy returns to the L line after being absorbed by the third varistor MOV103, the first varistor MOV101 and the fifth varistor MOV 105; in addition, a part of energy is absorbed and discharged to the ground by a second piezoresistor MOV102 and a discharge tube CG101, so that the resistance of N-line to L-line differential mode lightning stroke is greatly improved; and a small part of residual energy returns to the L line after being consumed by the first absorption capacitor CX101, the second absorption capacitor CX102, the common mode inductor LF103 and the third capacitor C103, wherein the rectifier bridge BD101 can also play a role in absorbing energy, thereby effectively reducing the impact of the differential mode high voltage lightning strike signal on the power supply.
3. When a common-mode high-voltage lightning strike signal is input from an L line, most energy is absorbed and discharged to the ground through the second piezoresistor MOV102 and the discharge tube GC101, a large potential difference is generated between the ground and output voltage at the moment, interference flood is caused, adverse effects are generated on a POE terminal by the interference flood, and the POE terminal is abnormal if a POE terminal data packet is lost or restarted. Therefore, by arranging the first filter capacitor CY201 and the second filter capacitor CY202 for filtering, interference flood can be effectively reduced. And a small part of residual energy can be absorbed by the main transformer and the first capacitor CY105, and then returns to the ground through the second ground wire and the first filter capacitor CY201 and the second filter capacitor CY202 (it should be noted that the second ground wire is not connected with the ground), so that the capacity of the first capacitor CY105 is as small as possible under the condition of meeting the EMC, so as to reduce the energy of the lightning stroke.
4. When common-mode high lightning voltage is input from an N line, partial energy is discharged to the ground after being absorbed by a discharge tube GC101 through a fourth varistor MOV104 and the majority of the energy, and a large potential difference is generated between the ground and the output voltage, so that the influence of interference flood on the system is caused, and the system is restarted or a data packet is lost (a secondary ground wire is not connected with the ground); therefore, the first filter capacitor CY201 and the second filter capacitor CY202 are added for filtering, and interference flood is reduced; in addition, a small part of energy is absorbed by the main transformer and CY105, passes through a secondary ground wire and then passes through the first filter capacitor CY201, and the second filter capacitor CY202 returns to the ground (the secondary ground wire is not connected with the ground), so that the capacity of the fifth capacitor CY105 is reduced as much as possible under the condition of meeting the EMC, and the energy of the lightning stroke is reduced.
5. When common-mode high lightning voltage is input from an L line and an N line simultaneously, most of energy on each line of the common-mode high lightning voltage is absorbed by a second piezoresistor MOV102 and a fourth piezoresistor MOV104 respectively and then returns to the ground through a discharge tube GC101, and a large potential difference is generated between the ground and output voltage at the moment, so that interference flood is caused to cause the restart of a POE terminal system or a data packet is lost (a secondary ground wire is not connected with the ground); therefore, the first filter capacitor CY201 and the second filter capacitor CY202 are added for filtering, and interference flood is reduced; in addition, a small part of energy is absorbed by the main transformer and the fifth capacitor CY105, passes through the secondary ground wire and then passes through the first filter capacitor CY201, and the second filter capacitor CY202 returns to the ground (the secondary ground wire is not connected with the ground), so that the capacity of the fifth capacitor CY105 is reduced as much as possible under the condition of meeting the EMC, and the energy of the lightning stroke is reduced.
Optionally, the first varistor MOV101, the second varistor MOV102, the third varistor MOV103 and the fourth varistor MOV104 of the embodiment of the present invention may be replaced by discharge tubes, wherein the discharge tubes may be gas discharge tubes or solid discharge tubes. Or the first varistor MOV101, the second varistor MOV102, the third varistor MOV103 and the fourth varistor MOV104 can be replaced by TVS transistors.
furthermore, the invention also provides a power supply, which comprises the driving circuit for preventing lightning and data loss.
the lightning protection and data loss prevention driving circuit is arranged, driving signals can be provided for wired or wireless electric appliance terminal products such as security and protection electric appliance terminal products and network IP electric appliance terminal products, the whole electronic system (POE terminal system) can be maintained to stably receive the driving signals, the interference of flood disasters in the signal transmission process can be reduced, and the problem that POE terminal data packets are lost or abnormally restarted due to the interference of flood disasters is avoided.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and implement the present invention accordingly, which can not limit the protection scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.
it will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (10)
1. The utility model provides a drive circuit of lightning protection and data loss prevention, is applied to the power, its characterized in that includes:
A first absorption circuit connected to the AC input line for absorbing energy in the lightning strike signal when the power source encounters the lightning strike signal;
The leakage circuit is connected with the alternating current input line and is used for leaking the lightning stroke signal to the ground when the power supply encounters the lightning stroke signal;
A second absorption circuit connected to the AC input line for absorbing energy in the lightning strike signal when the power source encounters the lightning strike signal;
a rectifier circuit connected to the second absorption circuit and rectifying an ac signal input from the ac input line to output a rectified signal;
The power supply processing circuit is connected with the rectifying circuit and is used for processing the rectifying signal so as to output a power supply signal to the output end of the power supply;
and the anti-interference circuit is connected with the output end of the power supply and is used for filtering the interference signal at the output end of the power supply when the power supply encounters a lightning stroke signal.
2. the lightning and data loss prevention driver circuit of claim 1, wherein the ac input line comprises: live and neutral lines; the second absorption circuit includes: a first absorption capacitor CX101, a second absorption capacitor CX102, a second common-mode inductor LF102, a third common-mode inductor LF103, and a third absorption capacitor C103;
A first end of the second absorption capacitor CX102 is connected with the live wire, and a second end of the second absorption capacitor CX102 is connected with the zero wire; a first end of the third common-mode inductor LF103 is connected to a first end of the second absorption capacitor CX102 of the live wire, a third end of the third common-mode inductor LF103 is connected to a second end of the second common-mode inductor LF102, a fourth end of the third common-mode inductor LF103 is connected to the zero line and a second end of the second absorption capacitor CX102, a second end of the third common-mode inductor LF103 is connected to a third end of the second common-mode inductor LF102, a first end of the second common-mode inductor LF102 is connected to the first input end of the rectifier circuit, and a fourth end of the second common-mode inductor LF102 is connected to the second input end of the rectifier circuit;
The first end of the third absorption capacitor C103 is connected to the high-voltage output port of the power processing circuit, and the second end of the third absorption capacitor C103 is grounded.
3. The lightning and data loss prevention driver circuit of claim 1, wherein the first absorption circuit comprises: a first varistor MOV101, a third varistor MOV103, a fifth varistor MOV 105;
A first end of the third varistor MOV103 is connected with a live wire of the alternating current input line, and a second end of the third varistor MOV103 is connected with a zero wire of the alternating current input line;
A first end of the first varistor MOV101 is connected with a live wire of the alternating current input line and a first input end of the rectifying circuit, and a second end of the first varistor MOV101 is connected with a second input end of the rectifying circuit of a zero wire of the alternating current input line;
A first end of the fifth varistor MOV105 is connected to a first output of the rectifier circuit and a second end of the fifth varistor MOV105 is connected to a second output of the rectifier circuit.
4. the lightning and data loss prevention driver circuit of claim 1, wherein the bleed circuit comprises a varistor and a discharge tube; or the bleeder circuit comprises a discharge tube.
5. The lightning and data loss prevention driver circuit of claim 1, wherein the bleeder circuit comprises: a second varistor MOV102, a fourth varistor MOV104 and a discharge tube GC 101;
a first end of the second varistor MOV102 is connected to the neutral line of the ac input line, and a second end of the second varistor MOV102 is connected to a first end of the discharge tube GC 101;
a first terminal of the fourth varistor MOV104 is connected to the live line of the ac input line, a second terminal of the fourth varistor MOV104 is connected to the first terminal of the discharge tube GC101, and a second terminal of the discharge tube GC101 is grounded.
6. the lightning and data loss prevention driving circuit according to claim 5, wherein the discharge tube GC101 is a gas discharge tube or a solid discharge tube.
7. The lightning and data loss prevention driver circuit of claim 1, wherein the immunity circuit comprises: a first filter capacitor CY201 and a second filter capacitor CY 202;
A first end of the first filter capacitor CY201 is connected to a positive output end of the power supply, and a second end of the first filter capacitor CY201 is grounded;
A first end of the second filter capacitor CY202 is connected to a negative output end of the power supply, and a second end of the second filter capacitor CY202 is grounded.
8. The lightning and data loss prevention driver circuit of claim 1, further comprising: the overcurrent protection circuit is arranged at the input end of the alternating current input line;
The overcurrent protection circuit includes: a first fuse F101 and a second fuse F102;
The first fuse F101 is connected to the live wire of the AC input line, and the second fuse F102 is connected to the neutral wire of the AC input line.
9. The lightning and data loss prevention driver circuit of claim 1, further comprising: an EMI filter circuit for performing EMI filtering processing on an input alternating current signal;
the EMI filter circuit includes: a fourth capacitance CY104 and a fifth capacitance CY 105;
A first end of the fourth capacitor CY104 is connected to the live line of the ac input line, a second end of the fourth capacitor CY104 and a first end of the fifth capacitor CY105 are grounded, and a second end of the fifth capacitor CY105 is connected to the neutral line of the ac input line.
10. A power supply comprising a lightning and data loss protection driver circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920683160.9U CN209767150U (en) | 2019-05-10 | 2019-05-10 | Lightning protection and data loss prevention driving circuit and power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920683160.9U CN209767150U (en) | 2019-05-10 | 2019-05-10 | Lightning protection and data loss prevention driving circuit and power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209767150U true CN209767150U (en) | 2019-12-10 |
Family
ID=68761316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920683160.9U Active CN209767150U (en) | 2019-05-10 | 2019-05-10 | Lightning protection and data loss prevention driving circuit and power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209767150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113098263A (en) * | 2021-04-12 | 2021-07-09 | 锐捷网络股份有限公司 | Power conversion circuit, power supply and electronic equipment |
-
2019
- 2019-05-10 CN CN201920683160.9U patent/CN209767150U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113098263A (en) * | 2021-04-12 | 2021-07-09 | 锐捷网络股份有限公司 | Power conversion circuit, power supply and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204089181U (en) | A kind of lightning surge protection circuit and LED drive power | |
| KR20210069072A (en) | Lightning surge protection circuit, method, system, storage medium and electronic device | |
| CN102842903A (en) | Power over Ethernet system and surge protection device thereof | |
| CN202197094U (en) | Power transmission line intelligent fault monitoring coupling power supply protective device | |
| US20130044523A1 (en) | Power supply having a surge protection circuit | |
| WO2023071747A1 (en) | Anti-lightning-surge circuit | |
| CN209767150U (en) | Lightning protection and data loss prevention driving circuit and power supply | |
| CN101162840A (en) | Interface protective circuit | |
| CN215344365U (en) | Power supply protection circuit and industrial flowmeter | |
| CN103872673A (en) | Three-level lightning prevention module of internet access protection | |
| CN204190381U (en) | A kind of antisurge interference prevention device based on power meter reading system | |
| CN205317831U (en) | Integration arrester on -line monitoring protection system | |
| WO2013149575A1 (en) | Lightning protection circuit, switching power supply and lightning protection method | |
| CN208623329U (en) | One kind having the compatible immunity to interference mould group of lightning protection EMC multifunction electromagnetic | |
| CN213027432U (en) | Power protection circuit of alternating current-direct current conversion circuit | |
| CN107707109A (en) | A kind of power circuit and air conditioner | |
| CN102957137B (en) | Ethernet overcurrent-overvoltage protector | |
| CN205724876U (en) | A kind of non-isolated is powered PSE device port surging protection circuit | |
| CN112952785B (en) | Surge protection circuit | |
| CN111641199B (en) | Overvoltage protection device and method applied to submarine observation network connection box | |
| CN109473958A (en) | A kind of lightning protection circuit and electrical equipment | |
| CN204118722U (en) | A kind of three grades of lightning-protection modules of network interface protection | |
| CN204012686U (en) | A kind of serial interface circuit with lightning protection function | |
| CN202749807U (en) | Ethernet shunt transition power supply overvoltage protector | |
| CN215221727U (en) | Signal surge protection circuit and surge protector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |