CN206963166U - A kind of anti-high-voltage breakdown circuit for deuterium lamp - Google Patents
A kind of anti-high-voltage breakdown circuit for deuterium lamp Download PDFInfo
- Publication number
- CN206963166U CN206963166U CN201720928625.3U CN201720928625U CN206963166U CN 206963166 U CN206963166 U CN 206963166U CN 201720928625 U CN201720928625 U CN 201720928625U CN 206963166 U CN206963166 U CN 206963166U
- Authority
- CN
- China
- Prior art keywords
- deuterium lamp
- voltage
- resistance
- relay
- end connection
- 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
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
Such as the utility model discloses a kind of anti-high-voltage breakdown circuit for deuterium lamp, including resistance R1, transient voltage suppressor diode DW, pi type filter and relay K, one end connection relay K of resistance R1 contact K 1, relay K contact K 1 other end connection resistance R2, metal-oxide-semiconductor Q1 drain electrode, electric capacity C3 and inductance L1.The anti-high-voltage breakdown circuit that the utility model is used for deuterium lamp can suppress to the peak voltage in power network; protect deuterium lamp from the influence of peak voltage; and harmonic disturbance rejection module and overvoltage protective module are provided with circuit; it is also provided with voltage detection module and over-pressed automatic switch-over circuit simultaneously; will not disconnecting circuit when running into overpressure situation; the voltage again plus on deuterium lamp is reduced simply by the mode of increase loop resistance; so as to neither influence its use; over-pressed damage is prevented again, therefore there is the advantages of strong interference immunity, vdiverse in function and easy to use.
Description
Technical field
It the utility model is related to a kind of protection circuit, specifically a kind of anti-high-voltage breakdown circuit for deuterium lamp.
Background technology
Deuterium lamp is the ultraviolet light source of ultraviolet-uisible spectrophotometer, the wave-length coverage of the light that it sends is generally 190 ~
400nm continuous spectrum band.The use wave-length coverage of deuterium lamp is generally 190 ~ 360nm.
Deuterium lamp is widely used in the UV detectors of liquid chromatograph, UV-VIS spectrophotometers, electrophoresis apparatus, SOx/NOx points
In a variety of analytical and testing instruments such as analyzer, blood test.
Deuterium lamp is easily influenceed by overvoltage and peak voltage in use, and existing Power supply for deuterium lamp can only be carried out
Single protection, and the mode protected is disconnecting circuit, influences its normal use.
The content of the invention
The purpose of this utility model is to provide a kind of anti-high-voltage breakdown circuit for deuterium lamp, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the utility model provides following technical scheme：
A kind of anti-high-voltage breakdown circuit for deuterium lamp, including the filtering of resistance R1, transient voltage suppressor diode DW, π type
Device and relay K, the resistance R1 one end connection relay K contact K-1, relay K contact K-1 other end connection
Resistance R2, metal-oxide-semiconductor Q1 drain electrode, electric capacity C3 and inductance L1, transient voltage suppressor diode DW be connected in parallel on transformer T it is secondary around
Group N2 both ends, transformer T secondary windings N2 are also connected with rectifier bridge D voltage input end, and rectifier bridge D voltage output end connects
Meet electric capacity C2 and inductance L1, transformer T armature winding N1 connection 220V line voltages, electric capacity C2 other end connection inductance L2
With rectifier bridge D port 4, the resistance R2 other end connects metal-oxide-semiconductor Q1 grid and triode V1 colelctor electrode, triode V1's
Emitter stage connects relay K, the relay K other end connection electric capacity C3 other end, inductance the L2 other end, potentiometer RP1
A fixing end and deuterium lamp W, potentiometer RP1 another fixing end connection resistance R3, resistance R3 the other end connection metal-oxide-semiconductor
Q1 source electrode and the deuterium lamp W other end, resistance R1 other end connection metal-oxide-semiconductor Q1 source electrode.
As preferred scheme of the present utility model：The electric capacity C2, electric capacity C3, inductance L1 and inductance L2 composition π type filtering
Device.
As preferred scheme of the present utility model：The relay K is normally opened contact relay.
As preferred scheme of the present utility model：The model SMAJ9.0A of the transient voltage suppressor diode DW.
As preferred scheme of the present utility model：The triode V1 is N-type triode, its model 9013.
Compared with prior art, the beneficial effects of the utility model are：The utility model is used for the anti-high-voltage breakdown of deuterium lamp
Circuit can suppress to the peak voltage in power network, protect deuterium lamp from the influence of peak voltage, and set in circuit
Harmonic disturbance rejection module and overvoltage protective module have been put, while has been also provided with voltage detection module and overvoltage automatic switchover electricity
Road, when running into overpressure situation will not disconnecting circuit, reduce the voltage again plus on deuterium lamp simply by the mode of increase loop resistance,
So as to neither influenceing its use, over-pressed damage is prevented again, therefore with strong interference immunity, vdiverse in function and easy to use excellent
Point.
Brief description of the drawings
Fig. 1 is the circuit diagram of the anti-high-voltage breakdown circuit for deuterium lamp.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Referring to Fig. 1, a kind of anti-high-voltage breakdown circuit for deuterium lamp, including resistance R1, transient voltage suppressor diode
DW, pi type filter and relay K, the resistance R1 one end connection relay K contact K-1, relay K contact K-1's
Other end connection resistance R2, metal-oxide-semiconductor Q1 drain electrode, electric capacity C3 and inductance L1, transient voltage suppressor diode DW are connected in parallel on transformation
Device T secondary windings N2 both ends, transformer T secondary windings N2 are also connected with rectifier bridge D voltage input end, rectifier bridge D's
Voltage output end connects electric capacity C2 and inductance L1, and transformer T armature winding N1 connection 220V line voltages, electric capacity C2's is another
End connection inductance L2 and rectifier bridge D port 4, resistance R2 other end connection metal-oxide-semiconductor Q1 grid and triode V1 current collection
Pole, triode V1 emitter stage connection relay K, relay the K other end connection electric capacity C3 other end, inductance L2 it is another
Another fixing end connection resistance R3 at end, a potentiometer RP1 fixing end and deuterium lamp W, potentiometer RP1, resistance R3's is another
One end connection metal-oxide-semiconductor Q1 source electrode and the deuterium lamp W other end, resistance R1 other end connection metal-oxide-semiconductor Q1 source electrode.
Electric capacity C2, electric capacity C3, inductance L1 and inductance L2 composition pi type filters.Relay K is normally opened contact relay.Wink
State voltage suppression diode DW model SMAJ9.0A.Triode V1 is N-type triode, its model 9013.
Operation principle of the present utility model is：220V line voltages enter back into rectifier bridge D after being depressured by transformer T
Middle carry out rectification, it is during this period Opposite direction connection by transient voltage suppressor diode DW, transient voltage suppressor diode DW
Two voltage-regulator diodes, when voltage exceeds certain value, its internal conducting, load below is protected, can effectively suppress spike
Voltage, the voltage exported from rectifier bridge D port 2 enter the π types being made up of electric capacity C2, electric capacity C3, inductance L1 and inductance L2 and filtered
It is filtered, harmonic carcellation interference, is added in from the voltage of pi type filter output on metal-oxide-semiconductor Q1, in use, metal-oxide-semiconductor Q1 in ripple device
Grid must be conducted by resistance R2, deuterium lamp W obtains electric, resistance R3, potentiometer RP1 in circuit composition bleeder circuit, voltage
In the case of normal, the undertension after partial pressure is so that triode V1 is turned on, and when running into overpressure situation, triode V1 is led
Logical, so as to bypass Q1 grid voltage, therefore Q1 ends, and relay K electric loop is connected, now its contact K-1 adhesives,
Deuterium lamp W forms electric loop after being connected with resistance R1, even if now voltage is higher, also because resistance R1 partial pressure effect will not make
Into the damage of deuterium lamp, reach the purpose of overvoltage protection.
Claims (5)
1. a kind of anti-high-voltage breakdown circuit for deuterium lamp, including resistance R1, transient voltage suppressor diode DW, pi type filter
With relay K, it is characterised in that one end connection relay K of resistance R1 contact K-1, relay K contact K-1's
Other end connection resistance R2, metal-oxide-semiconductor Q1 drain electrode, electric capacity C3 and inductance L1, transient voltage suppressor diode DW are connected in parallel on transformation
Device T secondary windings N2 both ends, transformer T secondary windings N2 are also connected with rectifier bridge D voltage input end, rectifier bridge D's
Voltage output end connects electric capacity C2 and inductance L1, and transformer T armature winding N1 connection 220V line voltages, electric capacity C2's is another
End connection inductance L2 and rectifier bridge D port 4, resistance R2 other end connection metal-oxide-semiconductor Q1 grid and triode V1 current collection
Pole, triode V1 emitter stage connection relay K, relay the K other end connection electric capacity C3 other end, inductance L2 it is another
Another fixing end connection resistance R3 at end, a potentiometer RP1 fixing end and deuterium lamp W, potentiometer RP1, resistance R3's is another
One end connection metal-oxide-semiconductor Q1 source electrode and the deuterium lamp W other end, resistance R1 other end connection metal-oxide-semiconductor Q1 source electrode.
A kind of 2. anti-high-voltage breakdown circuit for deuterium lamp according to claim 1, it is characterised in that the electric capacity C2,
Electric capacity C3, inductance L1 and inductance L2 composition pi type filters.
A kind of 3. anti-high-voltage breakdown circuit for deuterium lamp according to claim 1, it is characterised in that the relay K
For normally opened contact relay.
A kind of 4. anti-high-voltage breakdown circuit for deuterium lamp according to claim 1, it is characterised in that the transient voltage
Suppress diode DW model SMAJ9.0A.
A kind of 5. anti-high-voltage breakdown circuit for deuterium lamp according to claim 1, it is characterised in that the triode V1
For N-type triode, its model 9013.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720928625.3U CN206963166U (en) | 2017-07-28 | 2017-07-28 | A kind of anti-high-voltage breakdown circuit for deuterium lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720928625.3U CN206963166U (en) | 2017-07-28 | 2017-07-28 | A kind of anti-high-voltage breakdown circuit for deuterium lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206963166U true CN206963166U (en) | 2018-02-02 |
Family
ID=61382560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720928625.3U Active CN206963166U (en) | 2017-07-28 | 2017-07-28 | A kind of anti-high-voltage breakdown circuit for deuterium lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206963166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347066A (en) * | 2018-11-30 | 2019-02-15 | 深圳市必易微电子有限公司 | A kind of pair side control circuit and its isolated power converting circuit and over-voltage protection method |
-
2017
- 2017-07-28 CN CN201720928625.3U patent/CN206963166U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347066A (en) * | 2018-11-30 | 2019-02-15 | 深圳市必易微电子有限公司 | A kind of pair side control circuit and its isolated power converting circuit and over-voltage protection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103179764B (en) | A kind of LED with self-adaptive driving circuit and self-adaptive driving circuit | |
| CN107681636A (en) | A kind of overvoltage crowbar and Switching Power Supply | |
| CN109412117A (en) | A kind of protection circuit against input over-voltage | |
| CN108206517A (en) | A kind of low cost inputs anti-overvoltage crowbar | |
| CN205490113U (en) | Novel last electric surge current suppression circuit | |
| CN210780580U (en) | Voltage adaptation circuit and power supply | |
| CN205622210U (en) | Display screen with overvoltage protection | |
| CN201689129U (en) | Power-down detecting device | |
| CN206963166U (en) | A kind of anti-high-voltage breakdown circuit for deuterium lamp | |
| CN204068232U (en) | Lightning prevention surge circuit | |
| CN203398768U (en) | Low-cost AC input overvoltage protection circuit and switching power supply | |
| CN102183683B (en) | Switch power supply-based single-phase low power consumption intelligent electric energy meter | |
| CN203933382U (en) | A kind of APFC of tape jam measuring ability | |
| CN102175914A (en) | Three-phase low power consumption control intelligent electric energy meter based on zero line judging switching power supply | |
| CN208904649U (en) | A kind of power supply overvoltage protection circuit of high pressure barricade | |
| CN208424843U (en) | A kind of LED linear constant-current circuit with Ripple Suppression and dimming function | |
| CN208522452U (en) | A kind of self- recoverage short-circuit protection circuit | |
| CN103997199A (en) | Active power factor correction circuit with fault detection function | |
| CN104638608A (en) | Protection circuit | |
| CN204191002U (en) | Can the LED drive circuit of anti-2KV surge voltage | |
| CN107707109A (en) | A kind of power circuit and air conditioner | |
| CN109661066B (en) | Wide voltage input dimming control circuit, dimming power supply and LED lamp | |
| CN208707543U (en) | Switching Power Supply with overcurrent protection Self-resetting | |
| CN208043901U (en) | A kind of novel ac high-voltage busbar detection circuit | |
| CN206364492U (en) | Residual current action breaker circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |