CN209184239U - A kind of airborne direct current surge suppressor - Google Patents
A kind of airborne direct current surge suppressor Download PDFInfo
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- CN209184239U CN209184239U CN201920030718.3U CN201920030718U CN209184239U CN 209184239 U CN209184239 U CN 209184239U CN 201920030718 U CN201920030718 U CN 201920030718U CN 209184239 U CN209184239 U CN 209184239U
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Abstract
The utility model discloses a kind of airborne direct current surge suppressors, when base integrated chip U1, resistance R1, capacitor C2, capacitor C3, field-effect tube M1, resistance R2, capacitor C1, diode Q2, diode Q1, diode Q3, capacitor C5, resistance R4, resistance R3, resistance R4, capacitor C4, diode Q4, standard of precision voltage chip U2, resistance R6, resistance R7 and capacitor C6 including model NE555.The surge suppressor uses the linear characteristic of DC-DC charge pump principle and power MOS pipe, devises charge-pump type surge suppressor to be limited in the overvoltage surge generated in power supply system.The stable state variation range that system power supply allows is 25~30V, restrained effectively the power supply buses surge generated in the processes such as aircraft engine switch, power supply switching, load sudden change and thundercloud induction.
Description
Technical field
The utility model relates to power surge protection technology field, especially a kind of airborne direct current surge suppressor.
Background technique
It is various electronic equipments that Surge Suppressors (i.e. Surge Protector or lightning protection device), which is a kind of, instrument and meter, is led to
It interrogates route and the electronic device of security protection is provided.When the interference in electric loop or communication line because of the external world generates point suddenly
When peak current or voltage, shunting can be connected in Surge Protector in a very short period of time, to avoid surge to other in circuit
The damage of equipment.
In airborne 28V DC power supply, it is required that power load is able to bear overvoltage surge and under-voltage surge.
Wherein, overvoltage surge mostly occur in generator contactor, Switching power, load transient when, such as suddenly reduce or suddenly
Increasing load can cause generator bus voltage instantaneous to increase or decline, and thus just generate overvoltage surge.It is generally known that wave
It gushes voltage and often results in the damage of maloperation and equipment when it is attacked onto electrical equipment considerably more than stable state supply voltage
It is bad, whole system may be made to pause, communication abort, serious possible damage equipment.
For this purpose, being badly in need of proposing that a kind of structure is simple, airborne direct current surge suppressor of reliable in action.
Utility model content
In view of the above-mentioned problems, this is practical new the purpose of this utility model is to provide a kind of airborne direct current surge suppressor
Type the technical solution adopted is as follows:
A kind of airborne direct current surge suppressor, the when base integrated chip U1 including model NE555, one end with when basis set at
The resistance R1 that the resetting end RESE of chip U1 and power input VCC connection and the other end are connect with airborne DC power anode,
The anode of one end and airborne DC power supply connect and the capacitor C2 of other end ground connection, one end with it is described when base integrated chip U1
The capacitor C3 of control terminal CONTROL connection and other end ground connection, the field-effect tube that source electrode is connect with the anode of airborne DC power supply
M1, the resistance R2 and capacitor C1 that one end is connect with the grid of field-effect tube M1 after series connection and the other end is grounded input anode and field
The drain electrode of effect pipe M1 connects and output cathode is connected to the diode Q2 between resistance R2 and capacitor C1, output cathode and institute
The diode Q1 of the output cathode connection of diode Q2 is stated, input anode is connect with the drain electrode of field-effect tube M1 and output cathode
The diode Q3 connecting with the input anode of the diode Q1, the input anode of one end and the diode Q1 connect after series connection
Connect and the other end with when base integrated chip U1 output end OUTPUT the capacitor C5 and resistance R4 that connect, one end and institute after series connection
Resistance R3, resistance R4 and the capacitor C4 of the power input VCC connection of base integrated chip U1 and the other end ground connection when stating, output
Cathode with when base integrated chip U1 power input VCC connect and input the diode Q4 of plus earth, output cathode and two
The input anode connection of pole pipe Q1 and the standard of precision voltage chip U2 for inputting plus earth, one end and the field are imitated after series connection
Should pipe M1 drain electrode connection and the other end ground connection resistance R6 and resistance R7 and one end and the field-effect tube M1 drain electrode
The capacitor C6 of connection and other end ground connection；
The triggering end TRIGGER of base integrated chip U1 and resetting keyed end THRESHOLD are both connected to resistance R4 when described
Between capacitor C4, and when base integrated chip U1 discharge end DISCHARGE be connected between resistance R3 and resistance R4；The essence
The triggering end of close voltage reference chip U2 is connected between the resistance R6 and resistance R7.
Preferably, the model of the diode Q1 and diode Q3 is 1N5814；The diode Q2 and diode Q4
Model be D1N4742, and the model TL431 of the standard of precision voltage chip U2.
Further, the capacitor C1 is 10uF, and capacitor C2 is 1nF, and capacitor C3 is 1nF, and capacitor C4 is 1nF, capacitor C5
It is 1K Ω for 1uF, resistance R1, resistance R2 is 1K Ω, and resistance R3 is 510K Ω, and resistance R4 is 220K Ω, and resistance R5 is 15K Ω,
Resistance R6 is 1.5K Ω.
Compared with prior art, the utility model has the following beneficial effects:
The utility model, as switching power supply, controls field-effect tube by rear class Voltage Feedback using field-effect tube
Working condition makes field-effect tube form partial pressure protection to rear class electrical equipment.In conclusion the utility model has structure letter
The advantages that list, fast response time, protective value are good, inhibitory effect is good has very high in power surge protection technology field
Practical value and promotional value.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, will use below required in embodiment
Attached drawing is briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore is not to be seen as
It is the restriction to protection scope, it to those skilled in the art, without creative efforts, can be with root
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is the circuit diagram of the utility model.
Fig. 2 is the emulation connection figure of the utility model.
Fig. 3 is that the emulation of the utility model inhibits test curve figure.
Specific embodiment
It is practical to this with reference to the accompanying drawings and examples to keep the purposes, technical schemes and advantages of the application apparent
Novel to be described further, the embodiments of the present invention includes but is not limited to the following example.Based on the reality in the application
Apply example, those of ordinary skill in the art's every other embodiment obtained without making creative work, all
Belong to the range of the application protection.
Embodiment
As shown in Figure 1 to Figure 3, a kind of airborne direct current surge suppressor is present embodiments provided, it should be noted that this reality
Applying example is structure-based improvement, and the software program not being used for improves, and just it will not go into details herein.The airborne direct current
Surge suppressor includes the when base integrated chip U1 of model NE555, one end with when base integrated chip U1 resetting end RESE and
The resistance R1 that power input VCC connection and the other end are connect with airborne DC power anode, one end and airborne DC power supply
The capacitor C2 of anode connection and other end ground connection, one end with it is described when base integrated chip U1 control terminal CONTROL connect and
The capacitor C3 of other end ground connection, the field-effect tube M1 that source electrode is connect with the anode of airborne DC power supply, one end and field are imitated after series connection
Should pipe M1 grid connection and the other end ground connection resistance R2 and capacitor C1, input anode connect with the drain electrode of field-effect tube M1,
And output cathode is connected to the D1N4742 diode Q2 between resistance R2 and capacitor C1, output cathode is with the diode Q2's
Output cathode connection 1N5814 diode Q1, input anode connect with the drain electrode of field-effect tube M1 and output cathode with it is described
The 1N5814 diode Q3 of the input anode connection of diode Q1, the input anode of one end and the diode Q1 connect after series connection
Connect and the other end with when base integrated chip U1 output end OUTPUT the capacitor C5 and resistance R4 that connect, one end and institute after series connection
Resistance R3, resistance R4 and the capacitor C4 of the power input VCC connection of base integrated chip U1 and the other end ground connection when stating, output
Cathode with when base integrated chip U1 power input VCC connect and input the D1N4742 diode Q4 of plus earth, export
Cathode connect with the input anode of diode Q1 and inputs the TL431 standard of precision voltage chip U2 of plus earth, connects latter
It is imitated with the drain electrode connection of the field-effect tube M1 and the resistance R6 and resistance R7 of other end ground connection and one end and the field at end
It should the drain electrode connection of pipe M1 and the capacitor C6 of other end ground connection.Wherein, this when base integrated chip U1 triggering end TRIGGER and
Resetting keyed end THRESHOLD is both connected between resistance R4 and capacitor C4, and when base integrated chip U1 discharge end
DISCHARGE is connected between resistance R3 and resistance R4.At the same time, the triggering end of the standard of precision voltage chip U2 connects
It connects between the resistance R6 and resistance R7.In the present embodiment, the capacitor C1 is 10uF, and capacitor C2 is 1nF, capacitor C3
It is 1nF for 1nF, capacitor C4, capacitor C5 is 1uF, and resistance R1 is 1K Ω, and resistance R2 is 1K Ω, and resistance R3 is 510K Ω, resistance
R4 is 220K Ω, and resistance R5 is 15K Ω, and resistance R6 is 1.5K Ω.
It is briefly described as follows the working principle of airborne direct current surge suppressor:
When airborne DC supply input normal power voltage, voltage is provided by resistance R1 current limliting to zener diode Q4
Operating current, when zener diode Q4 is connected to the power input VCC of base integrated chip U1 to when base integrated chip U1 power, when
Base integrated chip U1 and peripheral circuit form self-maintained circuit, and in normal input voltage, timer is produced by self-oscillation
Raw high frequency square wave, according to charge pump principle by the resistance R5 of output end, resistance R6 and resistance R7, capacitor C5 and capacitor C6 and precision
Voltage reference chip U2 makes voltage at the node Uc of diode Q2 input anode and the output cathode of diode Q3 become amplitude
The high frequency square wave of 28V-38V, the square wave give capacitor C1 charging, the grid of the voltage of capacitor C1 to field-effect tube by diode Q1
Power supply, makes between grid source electrode that there are voltage differences, and when voltage difference is higher than the cut-in voltage of field-effect tube, field-effect tube pipe work at this time exists
Saturation region, output voltage are input voltage.Due to resistance R5, resistance R6 point Voltage Feedback to standard of precision voltage chip
On TL431, if feedback voltage is lower than the benchmark comparison voltage of voltage chips, the output voltage of chip TL431 is 0V.Work as input
When occurring surge voltage in voltage, resistance R5, resistance R6 partial pressure value be greater than chip benchmark comparison voltage, after TL431,
The gate-source voltage for dragging down field-effect tube, is at constant current area.Field-effect tube is set to form partial pressure of connecting with rear class electrical equipment
Form, output voltage are the Uds that surge voltage subtracts field-effect tube both ends, and the voltage for reaching electrical equipment is limited by power tube.
In the present embodiment, the calculation formula of the self-maintained circuit output square wave frequency of base integrated chip U1 when are as follows:
In conclusion the utility model uses field-effect tube as switching power supply, controlled by rear class Voltage Feedback
The working condition of field-effect tube makes field-effect tube form partial pressure protection to rear class electrical equipment.Compared with prior art, have prominent
Substantive distinguishing features and significant progress out have a vast market foreground in power surge protection technology field.
Above-described embodiment is only the preferred embodiment of the utility model, is not intended to limit the scope of the present invention,
In every case the design principle of the utility model is used, and carries out the non-creative variation worked and made on this basis, it should all
Belong within the protection scope of the utility model.
Claims (3)
1. a kind of airborne direct current surge suppressor, which is characterized in that the when base integrated chip U1 including model NE555, one end
With when base integrated chip U1 resetting end RESE and power input VCC connect and the other end and airborne DC power anode connect
The anode of the resistance R1 connect, one end and airborne DC power supply connects and the capacitor C2 of other end ground connection, one end with it is described when basis set
At the capacitor C3 that the control terminal CONTROL connection of chip U1 and the other end are grounded, source electrode is connect with the anode of airborne DC power supply
Field-effect tube M1, one end is connect and the resistance R2 and capacitor C1 of other end ground connection with the grid of field-effect tube M1 after series connection, defeated
Enter the drain electrode connection of anode and field-effect tube M1 and output cathode is connected to diode Q2 between resistance R2 and capacitor C1, it is defeated
The diode Q1 that cathode is connect with the output cathode of the diode Q2 out, input anode connect with the drain electrode of field-effect tube M1,
And the diode Q3 that output cathode is connect with the input anode of the diode Q1, one end and the diode Q1's is defeated after series connection
Enter anode connection and the other end with when base integrated chip U1 output end OUTPUT the capacitor C5 and resistance R4 that connect, after series connection
One end with it is described when base integrated chip U1 power input VCC connect and resistance R3, resistance R4 and the capacitor of other end ground connection
C4, output cathode with when base integrated chip U1 power input VCC connect and input the diode Q4 of plus earth, export
Cathode connect with the input anode of diode Q1 and inputs the standard of precision voltage chip U2 of plus earth, after series connection one end with
The drain electrode connection of the field-effect tube M1 and the resistance R6 and resistance R7 of other end ground connection and one end and the field-effect tube
The drain electrode connection of M1 and the capacitor C6 of other end ground connection；
The triggering end TRIGGER of base integrated chip U1 and resetting keyed end THRESHOLD are both connected to resistance R4 and electricity when described
Hold between C4, and when base integrated chip U1 discharge end DISCHARGE be connected between resistance R3 and resistance R4；The accurate electricity
The triggering end of pressure fiducial chip U2 is connected between the resistance R6 and resistance R7.
2. a kind of airborne direct current surge suppressor according to claim 1, which is characterized in that the diode Q1 and two poles
The model of pipe Q3 is 1N5814；The model of the diode Q2 and diode Q4 is D1N4742, and the accurate voltage base
The model TL431 of quasi core piece U2.
3. a kind of airborne direct current surge suppressor according to claim 1 or 2, which is characterized in that the capacitor C1 is
10uF, capacitor C2 are 1nF, and capacitor C3 is 1nF, and capacitor C4 is 1nF, and capacitor C5 is 1uF, and resistance R1 is 1K Ω, and resistance R2 is 1K
Ω, resistance R3 are 510K Ω, and resistance R4 is 220K Ω, and resistance R5 is 15K Ω, and resistance R6 is 1.5K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920030718.3U CN209184239U (en) | 2019-01-09 | 2019-01-09 | A kind of airborne direct current surge suppressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920030718.3U CN209184239U (en) | 2019-01-09 | 2019-01-09 | A kind of airborne direct current surge suppressor |
Publications (1)
| Publication Number | Publication Date |
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| CN209184239U true CN209184239U (en) | 2019-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920030718.3U Active CN209184239U (en) | 2019-01-09 | 2019-01-09 | A kind of airborne direct current surge suppressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116826683A (en) * | 2023-08-28 | 2023-09-29 | 陕西中科天地航空模块有限公司 | Airborne surge voltage clamping circuit |
-
2019
- 2019-01-09 CN CN201920030718.3U patent/CN209184239U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116826683A (en) * | 2023-08-28 | 2023-09-29 | 陕西中科天地航空模块有限公司 | Airborne surge voltage clamping circuit |
| CN116826683B (en) * | 2023-08-28 | 2023-12-22 | 陕西中科天地航空模块有限公司 | Airborne surge voltage clamping circuit |
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