CN212343636U - Military power supply filter - Google Patents
Military power supply filter Download PDFInfo
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- CN212343636U CN212343636U CN202021229679.9U CN202021229679U CN212343636U CN 212343636 U CN212343636 U CN 212343636U CN 202021229679 U CN202021229679 U CN 202021229679U CN 212343636 U CN212343636 U CN 212343636U
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- suppression circuit
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Abstract
The utility model provides a military power filter for airborne equipment, military power filter include signal input part, surge suppression circuit, EMI filter circuit and signal output part, and the input of surge suppression circuit is connected with signal input part, and the output of surge suppression circuit is connected with EMI filter circuit electricity, and the output of EMI filter circuit is connected with signal output part; the surge suppression circuit comprises a surge suppressor, and the model of the surge suppressor is LT 4363-2; the surge suppression circuit is used for suppressing the electric signals of at least five times of overvoltage surges and/or at least five times of undervoltage surges input by the signal input end and outputting the suppressed electric signals to the EMI filter circuit; the EMI filter circuit is used for filtering the suppressed voltage signal to output a filtered electric signal, and the filtered electric signal is output from a signal output end of the military power supply filter. The utility model discloses can solve the not enough technical problem of anti surge pulse ability of for military use power supply filter.
Description
Technical Field
The utility model relates to a wave filter technical field, in particular to for military use power filter.
Background
When the power filter is loaded and unloaded, the impact of high pulse voltage can be generated greatly, so that load equipment is damaged due to high-voltage transient, in order to protect the safety of subsequent circuits, the impact resistance of the power filter to the high pulse voltage needs to be improved, and the normal operation of the whole airborne equipment is ensured.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a for military use power filter, aim at solving for military use power filter's the not enough technical problem of anti surge pulse ability.
In order to achieve the above object, the present invention provides a power filter for military use, which comprises a signal input terminal, a surge suppressing circuit, an EMI filter circuit and a signal output terminal, wherein the input terminal of the surge suppressing circuit is connected to the signal input terminal, the output terminal of the surge suppressing circuit is electrically connected to the EMI filter circuit, and the output terminal of the EMI filter circuit is connected to the signal output terminal; the surge suppression circuit comprises a surge suppressor, and the model of the surge suppressor is LT 4363-2;
the surge suppression circuit is used for suppressing the electrical signals of at least five times of overvoltage surges and/or at least five times of undervoltage surges input by the signal input end and outputting the suppressed electrical signals to the EMI filter circuit;
and the EMI filter circuit is used for filtering the suppressed voltage signal to output a filtered electric signal, and the filtered electric signal is output from a signal output end of the military power supply filter.
In one embodiment, the surge suppression circuit comprises a surge suppression circuit forward input end, a surge suppression circuit reverse input end, a surge suppression circuit signal enable end, a surge suppression circuit output end, a surge suppressor, a first voltage stabilizing diode, a second voltage stabilizing diode, a third voltage stabilizing diode, a fourth voltage stabilizing diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a MOS transistor and a triode;
the positive input end of the surge suppression circuit is connected with the reverse input end of the surge suppression circuit through a second capacitor and is grounded, the positive input end of the surge suppression circuit, the collector of the triode and the drain of the MOS tube are interconnected, the positive input end of the surge suppression circuit is connected with the anode of the third voltage stabilizing diode through the second resistor and the fifth resistor, the cathode of the third voltage stabilizing diode is connected with the base electrode of the triode, the emitting electrode of the triode is connected with the power supply end of the surge suppressor, the positive input end of the surge suppression circuit is connected with the base electrode of the triode through the third resistor, the cathode of the first voltage-stabilizing diode is connected between the second resistor and the fifth resistor, the anode of the first voltage-stabilizing diode is connected with the ground, and the cathode of the second voltage-stabilizing diode is connected with the anode of the third voltage-stabilizing diode; the anode of the second voltage stabilizing diode is connected with the reverse input end of the surge suppression circuit, the signal enabling end of the surge suppression circuit is connected with the controlled end of the surge suppressor through the fourth voltage stabilizing diode, the emitter of the triode is grounded through a third capacitor, the controlled end of the surge suppressor is grounded through an eighth resistor and a ninth resistor, the overvoltage end of the surge suppressor is connected between the eighth resistor and the ninth resistor and grounded, the grid of the MOS tube is connected with the controlled end of the surge suppressor through a fourth resistor, the source of the MOS tube is connected with the output end of the surge suppressor through the first resistor, the output end of the surge suppressor is grounded through a sixth resistor and a seventh resistor, and the reference signal end of the surge suppressor is connected between the sixth resistor and the seventh resistor, the output end of the surge suppressor is grounded through a first capacitor, and two ends of the first capacitor are connected with the output end of the surge suppression circuit;
the MOS tube is used for detecting voltage signals input by a positive input end of the surge suppression circuit and a negative input end of the surge suppression circuit in the surge suppression circuit so as to control the controlled end of the surge suppressor to enable; the triode is used for controlling the conduction and the disconnection of a power end in the surge suppression circuit; the overvoltage end and the voltage loss end of the surge suppressor are used for adjusting the voltage output by the output end of the surge suppressor when the surge suppression circuit is in overvoltage and voltage loss;
in one embodiment, the transistor is of the type CZTA 44.
In one embodiment, the military power filter further comprises a housing, and the surge suppression circuit and the EMI filter circuit are disposed within the housing.
In one embodiment, the housing includes a housing first end and a housing second end, and the EMI filter circuit includes a first inductor, a second inductor, a third inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, and a first zener diode;
the first end of the first inductor is connected with the first end of the fifth capacitor, the second end of the first inductor is connected with the second end of the fifth capacitor, the third end of the first inductor, the first end of the first capacitor, the first end of the tenth capacitor, the first end of the eleventh capacitor and the first end of the second inductor are interconnected, the fourth end of the first inductor, the first end of the third capacitor, the second end of the tenth capacitor, the second end of the eleventh capacitor, the first end of the seventh capacitor, the first end of the sixth capacitor, the first end of the ninth capacitor, the first end of the eighth capacitor, the anode of the first zener diode and the first end of the fourth capacitor are interconnected with the signal output end and grounded, the second end of the first capacitor, the second end of the third capacitor and the first end of the shell are interconnected, the second end of the second inductor, the second end of the seventh capacitor, the third end of the eighth capacitor, the first end of the second capacitor, the fourth end of the fourth capacitor, the, A second end of a sixth capacitor and a first end of a third inductor are interconnected, a second end of the third inductor, a second end of a ninth capacitor, a second end of an eighth capacitor, a cathode of a first voltage stabilizing diode and a first end of a second capacitor are interconnected with the signal output end, and a second end of the second capacitor and a second end of a fourth capacitor are interconnected with the second end of the shell;
the first capacitor, the second capacitor, the third capacitor and the fourth capacitor are common-mode capacitors for filtering common-mode noise, the sixth capacitor, the seventh capacitor, the eighth capacitor, the ninth capacitor, the tenth capacitor and the eleventh capacitor are differential-mode capacitors, the first inductor is a differential-mode choke coil, and the sixth capacitor, the seventh capacitor, the eighth capacitor, the ninth capacitor, the tenth capacitor, the eleventh capacitor and the first inductor are for filtering differential-mode noise.
In an embodiment, the first capacitor, the second capacitor, the third capacitor and the fourth capacitor have the same value, and are all 0.01 uF.
In one embodiment, the EMI filter circuit employs an EMI filter that meets EMC requirements of the GJB151A-97 aircraft conducted emission interference CE101, CE 102.
The utility model provides a power filter, military power filter includes signal input part, surge suppression circuit, EMI filter circuit and signal output part, surge suppression circuit's input is connected with signal input part, surge suppression circuit's output is connected with EMI filter circuit electricity, EMI filter circuit's output with signal output part is connected; the surge suppression circuit comprises a surge suppressor, the model of the surge suppressor is LT4363-2, the surge suppression circuit is used for suppressing the electric signals of at least five overvoltage surges and/or at least five undervoltage surges input by the signal input end and outputting the suppressed electric signals to the EMI filter circuit; the EMI filter circuit is used for filtering the suppressed voltage signal to output a filtered electric signal, and the filtered electric signal is output from a signal output end of the military power supply filter. The utility model discloses a power filter solves power filter's the not enough technical problem of resistance surge pulse ability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of functional modules of an embodiment of a power filter according to the present invention;
fig. 2 is a circuit diagram of an embodiment of the power filter of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
20 | |
| 30 | DC-DC converter |
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that the description relating to "first", "second", etc. in the present invention is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is: the method comprises three parallel schemes, wherein the scheme is taken as an A/B (A/B) as an example, the scheme comprises a scheme A, a scheme B or a scheme A and a scheme B which are simultaneously met, in addition, the technical schemes between the various embodiments can be combined with each other, but the technical schemes must be realized by a person with ordinary skill in the art as a basis, and when the technical schemes are mutually contradictory or can not be realized, the combination of the technical schemes is not considered to exist, and the protection scope of the invention is not within the protection scope of the invention.
The utility model provides a power filter.
The military power supply filter is used for onboard equipment, such as military aircraft, and can meet the GJB181-1986 aircraft power supply characteristics; referring to fig. 1, in the present embodiment, the military power filter includes a signal input terminal, a surge suppression circuit 10, an EMI filter circuit 2020, and a signal output terminal, wherein an input terminal of the surge suppression circuit 10 is connected to the signal input terminal, an output terminal of the surge suppression circuit 10 is electrically connected to an EMI filter circuit 20, and an output terminal of the EMI filter circuit 20 is connected to the signal output terminal; the surge suppression circuit 10 comprises a surge suppressor, and the model of the surge suppressor is LT 4363-2; the voltage input by the signal input end can be 28V direct-current voltage;
the surge suppression circuit 1010 is configured to suppress an electrical signal of at least five overvoltage surges and/or at least five undervoltage surges input by the signal input end, and output the suppressed electrical signal to the EMI filter circuit 20; for example, the military power filter is subjected to 5 times of 80V overvoltage surges within 50ms continuously, the military power filter is subjected to 5 times of 80V undervoltage surges within 50ms continuously, and the time interval of the military power filter capable of withstanding the overvoltage surges or the undervoltage surges is 1 minute. The electric equipment on the military power supply filter cannot generate any fault after passing through the overvoltage surge and the undervoltage surge, and the power supply system normally works within 50ms when the interruption works when the undervoltage surge occurs;
the EMI filter circuit 20 is configured to perform filtering processing on the suppressed voltage signal to output a filtered electrical signal, where the filtered electrical signal is output from a signal output end of the military power filter. For example, the military power filter is subjected to overvoltage surges of 80V for 5 times in continuous 50ms, the military power filter is subjected to undervoltage surges of 80V for 5 times in continuous 50ms, and the time interval of the two surges is 1 minute, so that electric equipment on the military power filter cannot generate any fault after passing through the overvoltage surges and the undervoltage surges, and the power supply system normally works within 50ms or less when the power supply filter is interrupted to work when the undervoltage surges occur;
common mode interference and differential mode interference can be attenuated and electromagnetic interference and radiated electromagnetic interference can be reduced through the EMI filter circuit 20, and the anti-electromagnetic interference and anti-surge pulse capacity of the military power supply filter can be improved through the mutual matching of the surge suppression circuit 10 and the EMI filter circuit 20.
In one embodiment, the surge suppression circuit 10 includes a forward input terminal VIN + of the surge suppression circuit 10, a reverse input terminal VIN "of the surge suppression circuit 10, a signal enable terminal EN of the surge suppression circuit 10, an output terminal of the surge suppression circuit 10, a surge suppressor, a first zener diode, a second zener diode, a third zener diode, a fourth zener diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a MOS transistor, and a triode;
the positive input end of the surge suppression circuit 10 is connected with the negative input end of the surge suppression circuit 10 through a second capacitor and is grounded, the surge suppression circuit 10 the positive input end of the surge suppression circuit 10, the collector of the triode and the drain of the MOS tube are interconnected, the positive input end of the surge suppression circuit 10 is connected with the anode of the third zener diode through the second resistor and the fifth resistor, the cathode of the third voltage stabilizing diode is connected with the base electrode of the triode, the emitting electrode of the triode is connected with the power supply end of the surge suppressor, the positive input end of the surge suppression circuit 10 is connected with the base electrode of the triode through the third resistor, the cathode of the first voltage-stabilizing diode is connected between the second resistor and the fifth resistor, the anode of the first voltage-stabilizing diode is connected with the ground, and the cathode of the second voltage-stabilizing diode is connected with the anode of the third voltage-stabilizing diode; the anode of the second zener diode is connected to the reverse input end of the surge suppressor circuit 10, the signal enable end of the surge suppressor circuit 10 is connected to the controlled end of the surge suppressor through the fourth zener diode, the emitter of the triode is grounded through the third capacitor, the controlled end of the surge suppressor is grounded through the eighth resistor and the ninth resistor, the overvoltage end of the surge suppressor is connected between the eighth resistor and the ninth resistor, the overvoltage end is grounded, the gate of the MOS transistor is connected to the controlled end of the surge suppressor through the fourth resistor, the source of the MOS transistor is connected to the output end of the surge suppressor through the first resistor, the output end of the surge suppressor is grounded through the sixth resistor and the seventh resistor, and the reference signal end of the surge suppressor is connected to the sixth resistor and the seventh resistor, the output end of the surge suppressor is grounded through a first capacitor, and two ends of the first capacitor are connected with the output end of the surge suppression circuit 10;
the MOS transistor is configured to detect voltage signals input at a forward input end of the surge suppression circuit 10 and at a reverse input end of the surge suppression circuit 10 in the surge suppression circuit 10, so as to control enabling of a controlled end of the surge suppressor; the triode is used for controlling the conduction and the disconnection of a power supply end in the surge suppression circuit 10; the overvoltage end and the voltage loss end of the surge suppressor are used for adjusting the voltage output by the output end of the surge suppressor when the surge suppression circuit 10 is under overvoltage and voltage loss.
In one embodiment, the transistor is of the type CZTA 44.
Referring to fig. 2, in one embodiment, the military power filter further includes a housing, and the surge suppression circuit 10 and the EMI filter circuit 20 are disposed within the housing. The housing is the shell in the figure.
In an embodiment, the housing includes a first housing end and a second housing end, and the EMI filter circuit 2020 includes a first inductor L1, a second inductor L2, a third inductor L3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, and a first zener diode D1;
a first end of the first inductor L1 is connected to a first end of the fifth capacitor C5, a second end of the first inductor L1 is connected to a second end of the fifth capacitor C5, a third end of the first inductor L1, a first end of the first capacitor C1, a first end of the tenth capacitor C10, a first end of the eleventh capacitor C11, and a first end of the second inductor L2 are interconnected, a fourth end of the first inductor L1, a first end of the third capacitor C3, a second end of the tenth capacitor C10, a second end of the eleventh capacitor C11, a first end of the seventh capacitor C7, a first end of the sixth capacitor C6, a first end of the ninth capacitor C9, a first end of the eighth capacitor C8, an anode of the first zener diode D1, and a first end of the fourth capacitor C4 are interconnected to the signal output terminal and to ground, a second end of the first capacitor C1, a second end of the third capacitor C3, and a first end of the housing 3 are interconnected to the signal output terminal and ground, a second end of the second inductor L2, a second end of a seventh capacitor C7, a second end of a sixth capacitor C6 and a first end of the third inductor L3 are interconnected, a second end of the third inductor L3, a second end of a ninth capacitor C9, a second end of an eighth capacitor C8, a cathode of a first zener diode D1 and a first end of a second capacitor C2 are interconnected with the signal output terminal, and a second end of the second capacitor C2 and a second end of the fourth capacitor C4 are interconnected with the second end of the housing;
the first capacitor C1, the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 are common-mode capacitors for filtering out common-mode noise, the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9, the tenth capacitor C10 and the eleventh capacitor C11 are differential-mode capacitors, the first inductor L1 is a differential-mode choke coil, and the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9, the tenth capacitor C10, the eleventh capacitor C11 and the first inductor L1 are for filtering out differential-mode noise.
In one embodiment, the first capacitor C1, the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 have the same value, which is 0.01 uF.
In one embodiment, the first capacitor C1, the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 have the same value, which is 0.01 uF.
In one embodiment, the EMI filter circuit 20 employs an EMI filter that meets EMC requirements of the GJB151A-97 aircraft conducted emission interference CE101, CE 102. Wherein GJ151A-97 is the electromagnetic emission and sensitivity requirements of military equipment and subsystems. In addition, the military power supply filter has insertion loss of 10db to 40db for the frequency of 10kHz to 10 MHz. The military power filter further comprises a DC-DC converter 30, and the output end of the military power filter is connected with the DC-DC converter 30 and can supply power to airborne equipment.
The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (7)
1. A military power filter is used for airborne equipment and is characterized by comprising a signal input end, a surge suppression circuit, an EMI filter circuit and a signal output end, wherein the input end of the surge suppression circuit is connected with the signal input end, the output end of the surge suppression circuit is electrically connected with the EMI filter circuit, and the output end of the EMI filter circuit is connected with the signal output end; the surge suppression circuit comprises a surge suppressor, and the model of the surge suppressor is LT 4363-2;
the surge suppression circuit is used for suppressing the electrical signals of at least five times of overvoltage surges and/or at least five times of undervoltage surges input by the signal input end and outputting the suppressed electrical signals to the EMI filter circuit;
and the EMI filter circuit is used for filtering the suppressed voltage signal to output a filtered electric signal, and the filtered electric signal is output from a signal output end of the military power supply filter.
2. The military power filter of claim 1, wherein the surge suppression circuit comprises a surge suppression circuit forward input, a surge suppression circuit reverse input, a surge suppression circuit signal enable, a surge suppression circuit output, a surge suppressor, a first zener diode, a second zener diode, a third zener diode, a fourth zener diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a MOS transistor, and a triode;
the positive input end of the surge suppression circuit is connected with the reverse input end of the surge suppression circuit through a second capacitor and is grounded, the positive input end of the surge suppression circuit, the collector of the triode and the drain of the MOS tube are interconnected, the positive input end of the surge suppression circuit is connected with the anode of the third voltage stabilizing diode through the second resistor and the fifth resistor, the cathode of the third voltage stabilizing diode is connected with the base electrode of the triode, the emitting electrode of the triode is connected with the power supply end of the surge suppressor, the positive input end of the surge suppression circuit is connected with the base electrode of the triode through the third resistor, the cathode of the first voltage-stabilizing diode is connected between the second resistor and the fifth resistor, the anode of the first voltage-stabilizing diode is connected with the ground, and the cathode of the second voltage-stabilizing diode is connected with the anode of the third voltage-stabilizing diode; the anode of the second voltage stabilizing diode is connected with the reverse input end of the surge suppression circuit, the signal enabling end of the surge suppression circuit is connected with the controlled end of the surge suppressor through the fourth voltage stabilizing diode, the emitter of the triode is grounded through a third capacitor, the controlled end of the surge suppressor is grounded through an eighth resistor and a ninth resistor, the overvoltage end of the surge suppressor is connected between the eighth resistor and the ninth resistor and grounded, the grid of the MOS tube is connected with the controlled end of the surge suppressor through a fourth resistor, the source of the MOS tube is connected with the output end of the surge suppressor through the first resistor, the output end of the surge suppressor is grounded through a sixth resistor and a seventh resistor, and the reference signal end of the surge suppressor is connected between the sixth resistor and the seventh resistor, the output end of the surge suppressor is grounded through a first capacitor, and two ends of the first capacitor are connected with the output end of the surge suppression circuit;
the MOS tube is used for detecting voltage signals input by a positive input end of the surge suppression circuit and a negative input end of the surge suppression circuit in the surge suppression circuit so as to control the controlled end of the surge suppressor to enable; the triode is used for controlling the conduction and the disconnection of a power end in the surge suppression circuit; and the overvoltage end and the voltage loss end of the surge suppressor are used for regulating the voltage output by the output end of the surge suppressor when the surge suppression circuit is in overvoltage and voltage loss.
3. The military power filter of claim 2 wherein said transistor is of the type CZTA 44.
4. The military power filter of claim 1 further comprising a housing, the surge suppression circuit and EMI filter circuit being disposed within the housing.
5. The military power filter of claim 4, wherein the housing comprises a housing first end and a housing second end, and wherein the EMI filtering circuit comprises a first inductor, a second inductor, a third inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, an eleventh capacitor, and a first zener diode;
the first end of the first inductor is connected with the first end of the fifth capacitor, the second end of the first inductor is connected with the second end of the fifth capacitor, the third end of the first inductor, the first end of the first capacitor, the first end of the tenth capacitor, the first end of the eleventh capacitor and the first end of the second inductor are interconnected, the fourth end of the first inductor, the first end of the third capacitor, the second end of the tenth capacitor, the second end of the eleventh capacitor, the first end of the seventh capacitor, the first end of the sixth capacitor, the first end of the ninth capacitor, the first end of the eighth capacitor, the anode of the first zener diode and the first end of the fourth capacitor are interconnected with the signal output end and grounded, the second end of the first capacitor, the second end of the third capacitor and the first end of the shell are interconnected, the second end of the second inductor, the second end of the seventh capacitor, the third end of the eighth capacitor, the first end of the second capacitor, the fourth end of the fourth capacitor, the, A second end of a sixth capacitor and a first end of a third inductor are interconnected, a second end of the third inductor, a second end of a ninth capacitor, a second end of an eighth capacitor, a cathode of a first voltage stabilizing diode and a first end of a second capacitor are interconnected with the signal output end, and a second end of the second capacitor and a second end of a fourth capacitor are interconnected with the second end of the shell;
the first capacitor, the second capacitor, the third capacitor and the fourth capacitor are common-mode capacitors for filtering common-mode noise, the sixth capacitor, the seventh capacitor, the eighth capacitor, the ninth capacitor, the tenth capacitor and the eleventh capacitor are differential-mode capacitors, the first inductor is a differential-mode choke coil, and the sixth capacitor, the seventh capacitor, the eighth capacitor, the ninth capacitor, the tenth capacitor, the eleventh capacitor and the first inductor are for filtering differential-mode noise.
6. A military power filter as defined in claim 5, wherein said first capacitor, said second capacitor, said third capacitor and said fourth capacitor are of the same value, and are each 0.01 uF.
7. The military supply filter of claim 1, wherein the EMI filter circuit employs an EMI filter that meets EMC requirements of the GJB151A-97 aircraft conducted emission interference CE101, CE 102.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229679.9U CN212343636U (en) | 2020-06-24 | 2020-06-24 | Military power supply filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021229679.9U CN212343636U (en) | 2020-06-24 | 2020-06-24 | Military power supply filter |
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| CN212343636U true CN212343636U (en) | 2021-01-12 |
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| CN202021229679.9U Expired - Fee Related CN212343636U (en) | 2020-06-24 | 2020-06-24 | Military power supply filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116647110A (en) * | 2023-06-07 | 2023-08-25 | 石家庄银河微波技术股份有限公司 | Power supply protection circuit for antenna system and antenna system |
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2020
- 2020-06-24 CN CN202021229679.9U patent/CN212343636U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116647110A (en) * | 2023-06-07 | 2023-08-25 | 石家庄银河微波技术股份有限公司 | Power supply protection circuit for antenna system and antenna system |
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