CN207475405U - A kind of dedicated two-stage protection regulator circuit of chemical apparatuses - Google Patents
A kind of dedicated two-stage protection regulator circuit of chemical apparatuses Download PDFInfo
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- CN207475405U CN207475405U CN201721487946.0U CN201721487946U CN207475405U CN 207475405 U CN207475405 U CN 207475405U CN 201721487946 U CN201721487946 U CN 201721487946U CN 207475405 U CN207475405 U CN 207475405U
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- circuit
- protection
- regulator
- regulator circuit
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- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
The utility model is related to a kind of dedicated two-stage protection regulator circuits of chemical apparatuses, including the first protection circuit and the second regulator circuit, first protection circuit and the second regulator circuit are in series, wherein, first protection circuit includes 5V power supplys, TVS diode, GDT (ceramic gas discharge tube) and capacitance, and the first protection circuit uses TVS diode and the mode of GDT parallel connections to provide two-stage protection for circuit；Second regulator circuit includes the capacitance of the μ F of 5V power supplys, 3.3V outlet powers, two voltage-stablizer AS1117, the load resistance of 120 Europe (or following) and 10 μ F~100, second regulator circuit realizes pressure drop using three terminal regulator AS1117, linear voltage-stabilizing device coordinates diode and GDT to set up direct current regulation circuit in the utility model, make entire circuit structure simple, it is of low cost, it can equally realize the function of decompression and voltage stabilizing, so that the production cost of instrument and equipment is effectively controlled, instrument test result is more stablized accurate.
Description
Technical field
The utility model is related to chemical industry and circuit field more particularly to a kind of dedicated two-stage protection voltage stabilizing electricity of chemical apparatuses
Road.
Background technology
Full-automatic immunofluorescence analysis instrument is based on this technical a instrument of immunofluorescence analysis, in its field
Using and its extensively, fluorescent material and determinand are exactly passed through chemical reaction by the general basic principle using immunofluorence technic
To be covalently keyed, by the detection of the instruments such as microscope, laser confocal microscope, flow cytometer, reach positioning, show
The purpose of comprehensive, assay, and be widely used and the side such as biology, immunology, molecular biology, pathology and diagnostics
Face.
At present, full-automatic fluorescence immune chromatography analyzer interface electrification plug and shake can all cause the violent change of voltage
Change, can all make wafer damage, due to limited transmission distance system, and its transmission line is commonly exposed to open air, therefore easily because
The reasons such as lightning stroke introduce overvoltage.And the circuit voltage is relatively low (5V or so), itself pressure resistance it is also very low (- 7V~+
It 12V), will punch through damage once overvoltage introduces.When there is strong surge energy to occur, it might even be possible to see wafer damage,
The phenomenon that wiring board is charred, it is unstable due to operating process supply voltage, it is easy to generate card machine phenomenon, be easy to cause dye
Color washes enemy and does not dissolve and be denaturalized during sealing up for safekeeping, and cellular localization shows comprehensive, assay error, makes its application range
It is very limited, therefore, for drawbacks described above, becomes urgent problem to be solved.
Utility model content
The utility model for solve it is existing the technical issues of novel two-stage be provided protect regulator circuit, two-stage protection
Regulator circuit is not only simple in structure, electric property is stablized, additionally it is possible to adapt to broader operating voltage and working environment.
In order to solve the above technical problems, the utility model uses following technical proposals：Novel two-stage protection regulator circuit
Including the first protection circuit and the second regulator circuit, the first protection circuit and the second regulator circuit are in series, wherein, described first
Protection circuit includes power supply, TVS diode, GDT (ceramic gas discharge tube) and capacitance；Second regulator circuit includes import
Power supply, outlet power, three terminal regulator, load resistance and capacitance.
In order to further realize the utility model, the GDT of first protection circuit is connected in parallel on both ends of power, plays primary
Protective action.
In order to further realize the utility model, the TVS diode of first protection circuit is connected in parallel on both ends of power, rises
It is protected to differential mode.
In order to further realize the utility model, differential concatenation between two TVS diodes of first protection circuit,
Middle ground is parallel to both ends of power again, plays common mode protection.
In order to further realize the utility model, the second regulator circuit capacitance is the μ F of 10 μ F~100, to improve transient state
Response and stability, prevent transient voltage from easily burning chip.
In order to further realize the utility model, the three terminal regulator of second regulator circuit is AS1117, LM7805
Or LM2940 voltage stabilizing chips.
In order to further realize the utility model, the second regulator circuit series connection accesses 120 Europe (or following)
Load resistance makees metering function to protect zener diode.
In order to further realize the utility model, second regulator circuit can be taken to connect 2-3 in output terminal and press
It is reduced to the decompression of 0.6-0.7V silicon diodes.
Advantageous effect
Compared with prior art, the utility model has following advantageous effects：
1. since the utility model is provided with the first protection circuit and the second regulator circuit, first protection circuit and second
Regulator circuit is in series, and the first protection circuit plays two class protection to the second regulator circuit, prevents wafer damage, and wiring board is burnt
Paste prevents instrument positioning, shows comprehensive, assay error, contributes to the promotion of electronic product overall performance.
2. the utility model embodiment uses voltage-stablizer as voltage drop element, and coordinates capacitance, the electricity for exporting triode
Pressure keeps stablizing, and realizes decompression and voltage regulation result, and each element, using general electronic component, production cost is low, uses
Capacitance and voltage-stablizer etc. connect and compose, and make entire circuit structure simple, of low cost, can equally realize the work(of decompression and voltage stabilizing
It can so that the production cost of electronic equipment is effectively controlled.
Description of the drawings
Fig. 1 is the structure diagram that two-stage protects regulator circuit in the utility model embodiment.
Specific embodiment
Specific embodiment of the present utility model is described in further detail below in conjunction with attached drawing.
The two-stage protection regulator circuit includes the first protection circuit and the second regulator circuit, the first protection circuit and second
Regulator circuit is in series, wherein, first protection circuit includes 5V power supplys, three TVS diodes, two GDT (ceramic gas
Discharge tube) and capacitance, the first protection circuit is using three TVS diodes and the side of two GDT (ceramic gas discharge tube) parallel connections
Formula provides two-stage protection for the utility model circuit；Second regulator circuit include 5V power supplys, 3.3V outlet powers, two
The capacitance of the μ F of voltage-stablizer AS1117, the load resistance of 120 Europe (or following) and 10 μ F~100, the second regulator circuit use
Three terminal regulator AS1117 is in parallel, realizes that input voltage 5v turns output voltage 3.3v circuits, is provided for the utility model level plate
3.3V liquid level voltage.
First protection circuit, as shown is the two-stage protection circuit of the utility model, TVS2 diodes, two
GDT and capacitance are directly parallel in 5V both ends of power respectively, differential concatenation between TVS1/3 pipes, and middle ground is parallel to 5V electricity again
Source both ends, when lightning stroke occurs, induced overvoltage is introduced by both ends, and GDT1 and GDT2 do primary protection respectively, at this time overvoltage
Hundreds of volt left and right are weakened severely, secondary pressure limiting is done using TVS, the voltage to back-end circuit is made to be clamped at 12V or so,
So as to fulfill the protection to back-end circuit.Differential concatenation is grounded between the TVS1/3 pipes, plays common mode protection, and the TVS2 is in parallel
At circuit both ends, differential mode protection is done, to prevent voltage is excessive from damaging equipment by network cable transmission.
Second regulator circuit provides input voltage 5v using two groups of three terminal regulator AS1117 of series connection and turns in circuit
Output voltage 3.3v circuits, the μ F of 10 μ F of three terminal regulator AS1117 both sides parallel connection~100, in three terminal regulator AS1117-3.3
Output terminal series connection accesses 120 Europe (or following) resistance, allow it have a 10mA (or more) load, the output terminal needs one
The tantalum capacitance of a at least 10uF improves transient response and stability, prevents transient voltage from easily burning chip, three end is steady
VIN connects input terminal in depressor AS1117, and VOUT connects input terminal, GND ground connection.From left to right：1. the first regulator circuit obtains 5V electricity
Source, 2. obtain 3.3V voltages (330 Europe series LEDs make power supply indicator) 3. via AS1117-3.3 voltage stabilizings obtains through capacitor filtering 4.
To 3.3V DC power supplies.The second regulator circuit of the utility model can also be taken in 2-3 silicon diodes drops of output terminal series connection
Pressure, due to 0.6-0.7V of each silicon diode pressure drop, use multimeter select after 3 series connection of pressure drop 0.6V voltage for
3.2V, you can realize that input voltage 5v turns output voltage 3.3v circuits.
The foregoing is merely the better embodiment of the utility model, the utility model is not limited to above-mentioned embodiment party
Formula, there may be the structural modification that part is small in implementation process, if various changes or modifications to the utility model are not
The spirit and scope of the utility model are detached from, and are belonged within the scope of the claims and equivalents of the utility model, then originally
Utility model is also intended to comprising these modification and variations.
Claims (8)
1. a kind of dedicated two-stage protection regulator circuit of chemical apparatuses, it is characterised in that：The dedicated two-stage of chemical apparatuses is prevented
It protecting regulator circuit and includes the first protection circuit and the second regulator circuit, the first protection circuit and the second regulator circuit are in series,
In, first protection circuit includes power supply, TVS diode, GDT and capacitance；Second regulator circuit include import power supply,
Outlet power, three terminal regulator, load resistance and capacitance.
2. the dedicated two-stage protection regulator circuit of chemical apparatuses according to claim 1, it is characterised in that：Described first is anti-
The GDT of protection circuit is connected in parallel on both ends of power.
3. the dedicated two-stage protection regulator circuit of chemical apparatuses according to claim 1, it is characterised in that：Described first is anti-
The TVS diode of protection circuit is connected in parallel on both ends of power.
4. the dedicated two-stage protection regulator circuit of chemical apparatuses according to claim 3, it is characterised in that：Described first is anti-
Differential concatenation between two TVS diodes of protection circuit, middle ground are parallel to both ends of power again.
5. the dedicated two-stage protection regulator circuit of chemical apparatuses according to claim 1, it is characterised in that：Described second is steady
The three terminal regulator of volt circuit is AS1117, LM7805 or LM2940 voltage stabilizing chip.
6. the dedicated two-stage protection regulator circuit of chemical apparatuses according to claim 1, it is characterised in that：Described second is steady
Volt circuit capacitance is the μ F of 10 μ F~100.
7. the dedicated two-stage protection regulator circuit of chemical apparatuses according to claim 1, it is characterised in that：Described second is steady
Volt circuit series connection one load resistance of access, the load resistance are less than or equal to 120 Europe.
8. the dedicated two-stage protection regulator circuit of chemical apparatuses according to claim 1, it is characterised in that：Described second is steady
Volt circuit can be taken in output terminal series connection silicon diode decompression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721487946.0U CN207475405U (en) | 2017-11-09 | 2017-11-09 | A kind of dedicated two-stage protection regulator circuit of chemical apparatuses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721487946.0U CN207475405U (en) | 2017-11-09 | 2017-11-09 | A kind of dedicated two-stage protection regulator circuit of chemical apparatuses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207475405U true CN207475405U (en) | 2018-06-08 |
Family
ID=62263308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721487946.0U Expired - Fee Related CN207475405U (en) | 2017-11-09 | 2017-11-09 | A kind of dedicated two-stage protection regulator circuit of chemical apparatuses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207475405U (en) |
-
2017
- 2017-11-09 CN CN201721487946.0U patent/CN207475405U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180608 Termination date: 20201109 |
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| CF01 | Termination of patent right due to non-payment of annual fee |