CN207977905U - Pulse power supply with the under-voltage overvoltage protection of direct current - Google Patents
Pulse power supply with the under-voltage overvoltage protection of direct current Download PDFInfo
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- CN207977905U CN207977905U CN201721849455.6U CN201721849455U CN207977905U CN 207977905 U CN207977905 U CN 207977905U CN 201721849455 U CN201721849455 U CN 201721849455U CN 207977905 U CN207977905 U CN 207977905U
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- 239000003381 stabilizer Substances 0.000 claims abstract description 58
- 239000004065 semiconductor Substances 0.000 claims abstract description 38
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 230000005611 electricity Effects 0.000 claims description 18
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000005070 sampling Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000007600 charging Methods 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model provides a kind of pulse power supply with the under-voltage overvoltage protection of direct current, is related to pulse field of power supplies；Which solve the overvoltage protection of existing high temperature pulse power supply and under-voltage protection effect are bad, the problem of easily causing power supply damage；The utility model power supply is mainly made of current rectifying and wave filtering circuit, direct current under-voltage protecting circuit, DC over-voltage protection circuit, control IC, metal-oxide-semiconductor Q3 and boosting unit, and with an improved direct current under-voltage protecting circuit and DC over-voltage protection circuits.The effect that the utility model protects direct current under-voltage is more preferable, in input undervoltage, does not give control IC power supplies, is increased to the supply current of control IC in the range of nominal tension, product is made also reliably to start in the case of a high temperature；The effect that the utility model protects DC over-voltage is more preferable, and in such a way that voltage-stabiliser tube adds sampling resistor, in input voltage overvoltage, larger electric current can be generated on sampling resistor, at high temperature also can reliably working.
Description
Technical field
The utility model is related to pulse field of power supplies, more particularly, to a kind of pulse with the under-voltage overvoltage protection of direct current
Power supply.
Background technology
It, can be defeated when high temperature pulse power supply is a kind of rated direct voltage accessing 200~230Vdc in its input terminal
Go out high voltage, high current pulse energy.This power work environment temperature high (reaching as high as 225 DEG C), live electric power thus supplied
Complexity (has various other equipment to need the ac/dc voltage of each voltage class, AC voltage range：0~380Vac, direct current
Voltage range：0~300Vdc), input end cable length (up to 10km) and mix with other cables.
When this power supply product is due to wiring error, or due between input cable insulating layer breakage cause product input terminal
When having accessed abnormal DC voltage, such as input reverse voltage (- 600~0Vdc), direct current is under-voltage (0~150Vdc),
When DC over-voltage (250~300Vdc), product cannot work and be very easy to damage, therefore this product is usual
It is required for increasing the safeguard function to abnormal DC voltage.
Fig. 1 provides a kind of DC protection circuit of existing product, and operation principle is as follows：
The protection under-voltage to direct current：Startup voltage by using resistance R5 ', resistance R6 ' partial pressures as control IC ', when
When input dc power is pressed in 0~150Vdc, the startup voltage threshold of control IC ' is not achieved due to starting voltage, controls IC ' not works
Make.But with the raising of environment temperature, the leakage current of control IC ' can be increasing, and in 225 DEG C of environment temperature, leakage current can
To reach 10mA or so.And R5 ' is influenced by volume, radiating condition, the current value of design is generally less than 5mA, this is resulted in
Under hot environment, even if input terminal accesses specified direct-current working volts, product can not work.
Protection to DC over-voltage：Input voltage is sampled by using resistance R1 ', resistance R2 ', if input terminal direct current
Overtension, sampled voltage will be above reference voltage V ref, and Q1 ' is made to turn off, and main circuit does not work.But in 225 DEG C of high temperature
In the case of, reference voltage V ref can be reduced to 60% of room temperature or so, while the leakage current of triode Q2 ' becomes larger, in input electricity
Pressure is not up to Overpressure door and prescribes a time limit, and Q2 ' will be connected, and drag down Q1 ' gate voltages, make product can not normal work under rated voltage
Make.
Utility model content
The purpose of this utility model is that：In view of the problems of the existing technology, a kind of under-voltage overvoltage guarantor of band direct current is provided
The pulse power supply of shield, overvoltage protection and the under-voltage protection effect for solving existing high temperature pulse power supply are bad, easily cause power supply
The problem of damage.
The purpose of utility model of the utility model is achieved through the following technical solutions：
A kind of pulse power supply with the under-voltage overvoltage protection of direct current, which includes current rectifying and wave filtering circuit, direct current is under-voltage guarantor
Protection circuit, DC over-voltage protection circuit, control IC, metal-oxide-semiconductor Q3 and boosting unit, the boosting unit include primary coil and time
Grade coil, which is characterized in that the direct current under-voltage protecting circuit includes voltage-stabiliser tube ZD5 ', resistance R2, resistance R10 ' and capacitance
The power input of C16, the DC over-voltage protection circuit connect current rectifying and wave filtering circuit, the anode connection of the voltage-stabiliser tube ZD5 '
The cathode output end of DC over-voltage protection circuit, the cathode of voltage-stabiliser tube ZD5 ' is sequentially connected in series resistance R2, resistance R10 ' be followed by it is straight
The cathode output end of voltage protection circuit is flowed through, the startup voltage end of the control IC is connected between resistance R2 and resistance R10 ',
The grid of the control terminal connection metal-oxide-semiconductor Q3 of IC is controlled, the cathode of the source electrode connection DC over-voltage protection circuit of the metal-oxide-semiconductor Q3 is defeated
Outlet, one end of the drain electrode connection primary coil of the metal-oxide-semiconductor Q3, the other end of primary coil connect DC over-voltage protection circuit
Cathode output end, the capacitance C16 one end connection control IC startup voltage end, the other end connection DC over-voltage protection electricity
The cathode output end on road.
As further scheme, the DC over-voltage protection circuit include voltage-stabiliser tube ZD1 ', resistance R16, voltage-stabiliser tube ZD4,
The anode connection rectifying and wave-filtering electricity of capacitance C21, metal-oxide-semiconductor Q2, resistance R17 ', resistance R19 and metal-oxide-semiconductor Q1, the voltage-stabiliser tube ZD1 '
Cathode output end, the cathode on road pass through the anode of resistance R16 connection voltage-stabiliser tubes ZD4, the cathode connection rectification of the voltage-stabiliser tube ZD4
The cathode output end of filter circuit, the resistance R17 ' be connected in parallel on current rectifying and wave filtering circuit after connecting with resistance R19 again two are defeated
Between outlet, the grid of the metal-oxide-semiconductor Q2 is connected between resistance R16 and the anode of voltage-stabiliser tube ZD4, source electrode is connected to rectification filter
The cathode output end of wave circuit, drain electrode are connected between resistance R17 ' and resistance R19, and one end of the capacitance C21 connects metal-oxide-semiconductor
The cathode output end of the grid of Q2, other end connection current rectifying and wave filtering circuit, the grid of the metal-oxide-semiconductor Q1 be connected to resistance R17 ' with
Between resistance R19, source electrode is connected to the cathode output end of current rectifying and wave filtering circuit, drain electrode is connected to resistance R10 '.
As further scheme, the voltage stabilizing value of the voltage-stabiliser tube ZD1 ' is 225V~230V, and voltage-stabiliser tube ZD1 ' is by 1~50
A voltage-stabiliser tube is connected in series.
As further scheme, the voltage stabilizing value of the voltage-stabiliser tube ZD4 is 10V~24V, and voltage-stabiliser tube ZD4 is steady by 1~30
Pressure pipe is connected in series.
As further scheme, the voltage stabilizing value of the voltage-stabiliser tube ZD5 ' is 150V~160V, and voltage-stabiliser tube ZD5 ' is by 1~10
A voltage-stabiliser tube is connected in series.
As further scheme, which further includes alternating current protection circuit, which includes capacitance C20, resistance R14, two
Pole pipe D9, diode D8, resistance R15 and resistance R18, the current rectifying and wave filtering circuit include capacitance C9 and diode D7, the electricity
Hold the both ends that C9 is connected in parallel on power supply, positive terminal connection positive pole, the negative pole end of the diode D7 connect voltage-stabiliser tube ZD5's '
Anode, positive terminal, the other end of one end connection diode D7 of the capacitance C20 pass through the negative of resistance R14 connection diodes D9
Pole, the anode connection power cathode of the diode D9, the anode of the diode D8 be connected to capacitance C20 and resistance R14 it
Between, negative pole end connect power cathode after being sequentially connected in series resistance R15 and resistance R18, the grid of the metal-oxide-semiconductor Q2 is connected to resistance
Between R15 and resistance R18.
As further scheme, the resistance R14 and resistance R15 are reduced to a resistance R14 ', and the capacitance C20 passes through
Resistance R14 ' is separately connected diode D9 and diode D8.
As further scheme, the diode D7 is the diode that reversed pressure resistance is more than 600V；The capacitance C20 is electricity
Capacitance is in 0.01uF~0.1uF, and pressure resistance is more than the multi-layer ceramic capacitance of 600V；The capacitance C21 be capacitance 0.1uF~
The multi-layer ceramic capacitance of 1uF；The resistance R14 and resistance R15 is resistance value 10k Ω~100k Ω, and power is greater than or equal to
The resistance of 1/4W.
As further scheme, the resistance R14 ' is resistance value 10k Ω~100k Ω, and power is greater than or equal to 1/4W
Resistance.
Compared with prior art, the utility model has the following advantages：
1, the effect that the utility model protects direct current under-voltage is more preferable, in input undervoltage, control IC is not given to supply
Electricity increases to the supply current of control IC in the range of nominal tension, product is made also reliably to start in the case of a high temperature；
2, the effect that the utility model protects DC over-voltage is more preferable, in such a way that voltage-stabiliser tube adds sampling resistor,
In input voltage overvoltage, larger electric current can be generated on sampling resistor, it at high temperature also can reliably working；
3, the utility model can also protect exchange abnormal voltage, in 0~380Vac entire scopes, all rise
To protective action, operating temperature is up to 225 DEG C.
Description of the drawings
Fig. 1 is the DC protection circuit figure of existing high temperature pulse power supply；
Fig. 2 is the DC protection circuit figure of the utility model；
Fig. 3 is the circuit diagram of protection of increasing exchanges on the basis of the utility model；
Fig. 4 is the physical circuit figure of the utility model with direct current, exchange protection；
Fig. 5 is another physical circuit figure with direct current, the utility model of exchange protection.
Specific implementation mode
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment 1
The utility model provides a kind of pulse power supply with the under-voltage overvoltage protection of direct current, as shown in Fig. 2, the power supply is main
By current rectifying and wave filtering circuit, direct current under-voltage protecting circuit, DC over-voltage protection circuit, control IC, metal-oxide-semiconductor Q3 and boosting unit, whole
Flow unit, energy-storage units composition.Wherein, boosting unit is mainly made of primary coil and secondary coil.DC over-voltage protection electricity
The power input on road connects current rectifying and wave filtering circuit.Rectification unit connects boosting unit.Energy-storage units connect rectification unit.Energy storage
Unit is by switching connection load.
Direct current under-voltage protecting circuit is mainly made of voltage-stabiliser tube ZD5 ', resistance R2, resistance R10 ' and capacitance C16.Voltage-stabiliser tube
The cathode output end of the anode connection DC over-voltage protection circuit of ZD5 ', the cathode of voltage-stabiliser tube ZD5 ' are sequentially connected in series resistance R2, electricity
Resistance R10 ' is followed by the cathode output end of DC over-voltage protection circuit.The startup voltage end of control IC is connected to resistance R2 and resistance
Between R10 ', the grid of the control terminal connection metal-oxide-semiconductor Q3 of IC is controlled.The source electrode connection DC over-voltage protection circuit of metal-oxide-semiconductor Q3
Cathode output end, one end of the drain electrode connection primary coil of metal-oxide-semiconductor Q3, the other end connection DC over-voltage protection electricity of primary coil
The cathode output end on road.Startup voltage end, the other end of one end connection control IC of capacitance C16 connects DC over-voltage protection circuit
Cathode output end.The voltage-stabiliser tube ZD5 ' of the utility model can be connected in series by 1~10 voltage-stabiliser tube, as long as single or series connection
The sum of voltage stabilizing value afterwards is between 150V~160V.The resistance R10 ' of the utility model passes through resistance R10 and one and its
His the shared resistance R11 of circuit is collectively formed.
In the present embodiment, the voltage stabilizing value of voltage-stabiliser tube ZD5 ' takes 150V (can be by 2 voltage-stabiliser tube ZD5, ZD65 strings in actual track
Join), when input direct-current voltage is less than 150Vdc, voltage-stabiliser tube ZD5 ' does not puncture, and control IC is without startup voltage, Bu Nenggong
Make.When input direct-current voltage is more than 150Vdc, voltage-stabiliser tube ZD5 ' breakdown, resistance R2 charges to capacitance C16, as capacitance C16 two
Terminal voltage is more than control IC startups after the startup threshold voltage of control IC, main circuit work.Circuit is designed as specified straight when inputting
When galvanic electricity pressure (200~230Vdc), resistance R2 is 15~25mA to the charging current of capacitance C16.In this way, even if in high temperature 225
In the case of DEG C, the leakage current for controlling IC reaches 10mA, and control IC can also start.
Embodiment 2
In the present embodiment, a kind of DC over-voltage protection circuit is provided, remaining composition of power supply is consistent with embodiment, such as Fig. 2
It is shown.DC over-voltage protection circuit is mainly by voltage-stabiliser tube ZD1 ', resistance R16, voltage-stabiliser tube ZD4, capacitance C21, metal-oxide-semiconductor Q2, resistance
R17 ', resistance R19 and metal-oxide-semiconductor Q1 compositions.Cathode output end, the cathode of the anode connection current rectifying and wave filtering circuit of voltage-stabiliser tube ZD1 ' are logical
Cross the anode of resistance R16 connection voltage-stabiliser tubes ZD4.The cathode output end of the cathode connection current rectifying and wave filtering circuit of voltage-stabiliser tube ZD4.Resistance
R17 ' is connected in parallel on after connecting with resistance R19 again between two output ends of current rectifying and wave filtering circuit.The grid of metal-oxide-semiconductor Q2 is connected to electricity
Between resistance R16 and the anode of voltage-stabiliser tube ZD4, source electrode is connected to the cathode output end of current rectifying and wave filtering circuit, drain electrode is connected to resistance
Between R17 ' and resistance R19.The grid of one end connection metal-oxide-semiconductor Q2 of capacitance C21, the cathode of other end connection current rectifying and wave filtering circuit
Output end.The grid of metal-oxide-semiconductor Q1 is connected between resistance R17 ' and resistance R19, source electrode is connected to the cathode of current rectifying and wave filtering circuit
Output end, drain electrode are connected to resistance R10 '.The voltage-stabiliser tube ZD1 ' of the utility model can be connected in series by 1~50 voltage-stabiliser tube,
As long as the sum of voltage stabilizing value after single or series connection is between 225V~230V.Voltage-stabiliser tube ZD4 can also be by 1~30 voltage stabilizing
Pipe connect and, as long as the voltage stabilizing value after single or series connection is 10V~24V.Resistance R17 ' can also have several resistance to connect
It forms, the present embodiment is composed in series using resistance R17 and resistance R20.
In the present embodiment, the voltage stabilizing value of voltage-stabiliser tube ZD1 ' take 225V (in actual track can by 3 voltage-stabiliser tube ZD1, ZD2,
ZD3 is connected in series), when input direct-current voltage is more than 230Vdc, voltage-stabiliser tube ZD1 ' breakdown, resistance R16 charges to capacitance C21,
When capacitance C21 both end voltages are more than metal-oxide-semiconductor Q2 threshold voltages, metal-oxide-semiconductor Q2 conductings drag down metal-oxide-semiconductor Q1 gate voltages, metal-oxide-semiconductor
Q1 is turned off, and main circuit does not work.
Embodiment 3
The present embodiment mainly increases alternating current protection circuit on the basis of embodiment 2, remaining composition and embodiment 2 one
It causes.The structure chart of the present embodiment is as shown in Figure 3 and Figure 4, alternating current protection circuit mainly by capacitance C20, resistance R14, diode D9,
Diode D8, resistance R15 and resistance R18 compositions.The alternating current protection circuit shares capacitance C21 with DC over-voltage protection circuit.It is whole
Stream filter circuit includes capacitance C9 and diode D7, and capacitance C9 is connected in parallel on the both ends of power supply, the positive terminal connection electricity of diode D7
The anode of source anode, negative pole end connection voltage-stabiliser tube ZD5 '.Positive terminal, the other end of one end connection diode D7 of capacitance C20 is logical
Cross the cathode of resistance R14 connection diodes D9, and the anode connection power cathode of diode D9 (due to series connection, diode D9 and electricity
The position for hindering R14 is commutative).The anode of diode D8 is connected between capacitance C20 and resistance R14, negative pole end is sequentially connected in series electricity
Power cathode is connected after resistance R15 and resistance R18.The grid of metal-oxide-semiconductor Q2 is connected between resistance R15 and resistance R18.
The reversed pressure resistances such as diode D7, D8, D9 selection 1N4007, FR107, BYV26E are more than the diode of 600V.Capacitance
C20 is capacitance in 0.01uF~0.1uF, and pressure resistance is more than the multi-layer ceramic capacitance of 600V.Capacitance C21 is that capacitance exists
The multi-layer ceramic capacitance of 0.1uF~1uF.Resistance R14 and resistance R15 is resistance value 10k Ω~100k Ω, and power is more than or waits
In the resistance of 1/4W.
In the present embodiment, due to C20 requirement high pressures in circuit, capacity is small, and C21 capacity requireds are big and resistance to be forced down, so
Heat safe ceramic condenser can be used in C20 and C321.0.01uF/1kV patch capacitors can be selected in C20, and C21 can be selected
0.47uF/50V patch capacitors.Even if input terminal alternating voltage can reliably working if being 380Vac (crest voltage 540V).
When input terminal misconnection enters alternating voltage, when alternating voltage rises (0 °~90 ° of sinusoidal waveform), electric current is through capacitance
C20, diode D8, resistance R15, capacitance C21, to capacitance C20 and capacitance C21 chargings.(the sinusoidal waveform when alternating voltage declines
90 °~270 °), electric current discharges to capacitance C20 through diode D9, resistance R14, capacitance C20.(sinusoidal waveform when rising again
270 °~2+90 ° of π), and to capacitance C20 and capacitance C21 chargings.So in cycles, the both ends capacitance C21 can maintain an electricity
Pressure makes metal-oxide-semiconductor Q2 be connected, and drags down metal-oxide-semiconductor Q1 gate voltages, metal-oxide-semiconductor Q1 shutdowns, main circuit does not work, anti-to play exchange
Shield acts on.
Embodiment 4
The present embodiment is the improvement based on embodiment 3, and circuit structure is as shown in figure 5, mainly by resistance R14 and resistance
R15 is reduced to a resistance R14 '.Capacitance C20 is separately connected diode D9 and diode D8 by resistance R14 '.Resistance R14 '
For resistance value 10k Ω~100k Ω, and power is greater than or equal to the resistance of 1/4W.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, and should refer to
Go out, all any modification, equivalent and improvement made within the spirit and principle of the present invention etc. should all include
It is within the protection scope of the utility model.
Claims (9)
1. a kind of pulse power supply with the under-voltage overvoltage protection of direct current, which includes current rectifying and wave filtering circuit, direct current under-voltage protection
Circuit, DC over-voltage protection circuit, control IC, metal-oxide-semiconductor Q3 and boosting unit, the boosting unit include primary coil and secondary
Coil, which is characterized in that the direct current under-voltage protecting circuit includes voltage-stabiliser tube ZD5 ', resistance R2, resistance R10 ' and capacitance C16,
The power input of the DC over-voltage protection circuit connects current rectifying and wave filtering circuit, the anode connection direct current of the voltage-stabiliser tube ZD5 '
The cathode output end of overvoltage crowbar, the cathode of voltage-stabiliser tube ZD5 ' is sequentially connected in series resistance R2, resistance R10 ' is followed by direct current mistake
The startup voltage end of the cathode output end of voltage protection circuit, the control IC is connected between resistance R2 and resistance R10 ', is controlled
The grid of the control terminal connection metal-oxide-semiconductor Q3 of IC, the cathode output of the source electrode connection DC over-voltage protection circuit of the metal-oxide-semiconductor Q3
End, one end of the drain electrode connection primary coil of the metal-oxide-semiconductor Q3, the other end connection DC over-voltage protection circuit of primary coil
Cathode output end, startup voltage end, the other end of one end connection control IC of the capacitance C16 connect DC over-voltage protection circuit
Cathode output end.
2. a kind of pulse power supply with the under-voltage overvoltage protection of direct current according to claim 1, which is characterized in that described straight
It includes voltage-stabiliser tube ZD1 ', resistance R16, voltage-stabiliser tube ZD4, capacitance C21, metal-oxide-semiconductor Q2, resistance R17 ', resistance to flow through voltage protection circuit
Cathode output end, the cathode of the anode connection current rectifying and wave filtering circuit of R19 and metal-oxide-semiconductor Q1, the voltage-stabiliser tube ZD1 ' pass through resistance R16
Connect the anode of voltage-stabiliser tube ZD4, the cathode output end of the cathode connection current rectifying and wave filtering circuit of the voltage-stabiliser tube ZD4, the resistance
R17 ' is connected in parallel on after connecting with resistance R19 again between two output ends of current rectifying and wave filtering circuit, the grid connection of the metal-oxide-semiconductor Q2
To between resistance R16 and the anode of voltage-stabiliser tube ZD4, source electrode be connected to current rectifying and wave filtering circuit cathode output end, drain electrode be connected to
Between resistance R17 ' and resistance R19, grid, the other end connection rectifying and wave-filtering electricity of one end connection metal-oxide-semiconductor Q2 of the capacitance C21
The cathode output end on road, the grid of the metal-oxide-semiconductor Q1 is connected between resistance R17 ' and resistance R19, source electrode is connected to rectification filter
The cathode output end of wave circuit, drain electrode are connected to resistance R10 '.
3. a kind of pulse power supply with the under-voltage overvoltage protection of direct current according to claim 2, which is characterized in that described steady
The voltage stabilizing value of pressure pipe ZD1 ' is 225V~230V, and voltage-stabiliser tube ZD1 ' is connected in series by 1~50 voltage-stabiliser tube.
4. a kind of pulse power supply with the under-voltage overvoltage protection of direct current according to claim 2, which is characterized in that described steady
The voltage stabilizing value of pressure pipe ZD4 is 10V~24V, and voltage-stabiliser tube ZD4 is connected in series by 1~30 voltage-stabiliser tube.
5. a kind of pulse power supply with the under-voltage overvoltage protection of direct current according to claim 1, which is characterized in that described steady
The voltage stabilizing value of pressure pipe ZD5 ' is 150V~160V, and voltage-stabiliser tube ZD5 ' is connected in series by 1~10 voltage-stabiliser tube.
6. a kind of pulse power supply with the under-voltage overvoltage protection of direct current according to claim 2, which is characterized in that the power supply
Further include alternating current protection circuit, which includes capacitance C20, resistance R14, diode D9, diode D8, resistance R15 and resistance
R18, the current rectifying and wave filtering circuit include that capacitance C9 and diode D7, the capacitance C9 are connected in parallel on the both ends of power supply, two pole
The positive terminal connection positive pole of pipe D7, the anode of negative pole end connection voltage-stabiliser tube ZD5 ', one end of the capacitance C20 connects two poles
By the cathode of resistance R14 connection diodes D9, the anode connection power supply of the diode D9 is negative for the positive terminal of pipe D7, the other end
Pole, the anode of the diode D8 is connected between capacitance C20 and resistance R14, negative pole end is sequentially connected in series resistance R15 and resistance
Power cathode is connected after R18, the grid of the metal-oxide-semiconductor Q2 is connected between resistance R15 and resistance R18.
7. a kind of pulse power supply with the under-voltage overvoltage protection of direct current according to claim 6, which is characterized in that the electricity
Resistance R14 and resistance R15 is reduced to resistance a R14 ', the capacitance C20 and is separately connected diode D9 and two by resistance R14 '
Pole pipe D8.
8. a kind of pulse power supply with the under-voltage overvoltage protection of direct current according to claim 6, which is characterized in that described two
Pole pipe D7 is the diode that reversed pressure resistance is more than 600V；The capacitance C20 is capacitance in 0.01uF~0.1uF, and pressure resistance is big
In the multi-layer ceramic capacitance of 600V；The capacitance C21 is multi-layer ceramic capacitance of the capacitance in 0.1uF~1uF；The resistance
R14 and resistance R15 is resistance value 10k Ω~100k Ω, and power is greater than or equal to the resistance of 1/4W.
9. a kind of pulse power supply with the under-voltage overvoltage protection of direct current according to claim 7, which is characterized in that the electricity
Resistance R14 ' is resistance value 10k Ω~100k Ω, and power is greater than or equal to the resistance of 1/4W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849455.6U CN207977905U (en) | 2017-12-26 | 2017-12-26 | Pulse power supply with the under-voltage overvoltage protection of direct current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849455.6U CN207977905U (en) | 2017-12-26 | 2017-12-26 | Pulse power supply with the under-voltage overvoltage protection of direct current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207977905U true CN207977905U (en) | 2018-10-16 |
Family
ID=63770228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721849455.6U Expired - Fee Related CN207977905U (en) | 2017-12-26 | 2017-12-26 | Pulse power supply with the under-voltage overvoltage protection of direct current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207977905U (en) |
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2017
- 2017-12-26 CN CN201721849455.6U patent/CN207977905U/en not_active Expired - Fee Related
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Effective date of registration: 20200401 Address after: 116000 412, floor 4, block a, comprehensive office building, No. 3, Kehai street, Dalian high tech Industrial Park, Dalian City, Liaoning Province Patentee after: Dalian Haifu Technology Co.,Ltd. Address before: Jinjiang District hot pepper city street Chengdu city Sichuan province 610000 4 No. 3 Building 3 floor No. 49 Patentee before: CHENGDU DINGXIN ZHIYUAN TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181016 |