CN104595557B - Resistance-capacitance voltage reduction type power-saving and noise-reducing alternating current electromagnetic valve - Google Patents
Resistance-capacitance voltage reduction type power-saving and noise-reducing alternating current electromagnetic valve Download PDFInfo
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- CN104595557B CN104595557B CN201510091365.4A CN201510091365A CN104595557B CN 104595557 B CN104595557 B CN 104595557B CN 201510091365 A CN201510091365 A CN 201510091365A CN 104595557 B CN104595557 B CN 104595557B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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Abstract
The invention discloses a resistance-capacitance voltage reduction type power-saving and noise-reducing alternating current electromagnetic valve which comprises a power-saving unit 100 and a conventional alternating current electromagnetic valve, and is characterized in that the power-saving unit 100 consists of an AC-DC conversion circuit 101, a switch pulse generation circuit 102, a switch circuit 103, a sustaining voltage reduction circuit 104 and a bridge circuit 105; the AC-DC conversion circuit 101 is a resistance-capacitance voltage reduction type conversion circuit.
Description
Technical field
The present invention relates to low appliance field, more particularly, to a kind of have " the capacitance-resistance fall saving electric energy, static noise function
The alternating current electromagnetic valve of die mould economize on electricity noise elimination ".
Background technology
Magnetic valve (Electromagnetic valve) is a kind of electromagnetic force relying on magnet exciting coil to produce driving valve
The fluid control device of open and close.
Alternating current electromagnetic valve is one of magnetic valve type, is apply widely in household electrical appliance and industrial control equipment low
Piezoelectricity device.It is characterized in magnet exciting coil incoming transport voltage, produce the electromagnetic force driving valve open/close with alternating current.
Alternating current electromagnetic valve is mainly made up of magnet exciting coil, valve element, back-moving spring.Fig. 1 a, Fig. 1 b control for alternating current electromagnetic valve
The schematic diagram of fluid (gas or liquid) switching；Fig. 2 a, Fig. 2 b are the AC hydraulic solenoid valve control " hydraulic oil " in hydraulic test
The schematic diagram of flow direction.
In conjunction with Fig. 1 a：When logical AC220V, the AC110V or AC380V voltage of A1, A2 termination of magnet exciting coil (is generally called below
AC220V, AC110V or AC380V be AC voltage) when, its produce electromagnetic force promote valve element overcome back-moving spring resistance and to
Lower movement, the piston being connected with valve element is also moved down therewith, and described alternating current electromagnetic valve is opened, and its " entrance " and " outlet " connect
Logical.
In conjunction with Fig. 1 b：When in magnet exciting coil AC voltage turn off when, valve element loss of excitation power, by back-moving spring effect and on
Move, piston also with move, described alternating current electromagnetic valve RESET, its " entrance " and " outlet " shutoff.
In conjunction with Fig. 2 a：During the logical AC voltage of A1, A2 termination of the magnet exciting coil of hydraulic buttery valve, the electromagnetic force that it produces promotes
Valve element overcomes the resistance of back-moving spring to move right, and being connected with valve element group piston is also moved to right therewith, described hydraulic pressure
2 mouthfuls of magnetic valve are just switched on 4 mouthfuls with 3 mouthfuls, 1 mouthful.
In conjunction with Fig. 2 b：When AC voltage in the magnet exciting coil of hydraulic buttery valve turns off, valve element loss of excitation power, by back-moving spring
Effect and move to left, piston also moves to left therewith, described hydraulic buttery valve RESET, its 1 mouthful with 2 mouthfuls, 4 mouthfuls with 5 mouthfuls of end just by
Connect.
In sum, the course of work of alternating current electromagnetic valve can be divided into " promotion ", " holding " RESET three phases：
1st, promote：A1, A2 end of magnet exciting coil and AC Voltage On state, electromagnetic force promotes valve core movement；
2nd, keep：Valve element reaches the position setting, and magnet exciting coil continues and AC Voltage On state, and valve element continues to be subject to electromagnetism masterpiece
With；
3rd, reset：Magnet exciting coil disconnect AC voltage, valve element dead electricity magneticaction and reset.
Aobvious you are clear to, and in the stage of promotion, valve element must pull against stiction and needs larger electromagnetism with the elastic force of back-moving spring
Power effect could be moved.Corresponding, AC voltage must provide for higher voltage, larger power (hereinafter referred to as promoting power)
Magnet exciting coil could produce larger electromagnetic force, can ensure the motion of valve element.
Keeping the stage, valve element has reached setting position, the elastic force of back-moving spring need only be overcome to be held at setting position
Put.Corresponding, if now magnet exciting coil still passes to the alternating voltage high with promotion stage-sample, will result in energy dissipation
And make the intensification of magnet exciting coil no favour！
Traditional alternating current electromagnetic valve is due to promoting and keeping all passing to identical alternating current voltage (for example in stage magnet exciting coil
), AC220V therefore there is following critical defect：
1st, generate heat：Front already described, promoting and keeping the stage, traditional alternating current electromagnetic valve is all passing to identical alternating voltage (example
As AC220V), therefore, heating is serious, and the phenomenon that magnet exciting coil burns because overheated also occurs repeatedly；
2nd, power consumption：The energy of traditional alternating current electromagnetic valve heating is exactly to input electric energy in magnet exciting coil, this kind of harmful sending out
Another shortcoming that the torrid zone is come is exactly meaningless power consumption.Reduce this power consumption so that it may obtain the effect of " economize on electricity "；
3rd, out of control：After magnet exciting coil heating, its impedance increases, and electric current diminishes, and electromagnetic force also can not push away therewith reducing
Movable valve plug to setting position, household electrical appliance or industrial control equipment can therefore and system is out of control.
For the shortcoming of traditional alternating current electromagnetic valve, present invention target to be arrived is：
1st, " with electronics technological transformation conventional industries ", a kind of design as far as possible simple, the used device of electronic circuit is as far as possible few
, price try one's best honest and clean, conventional AC magnetic valve can be made to economize on electricity " power save unit " of noise elimination；
2nd, " power save unit " should can be used for transforming the conventional AC magnetic valve of online use, make these alternating current electromagnetic valve liters
Become " alternating current electromagnetic valve of economize on electricity noise elimination "；
3rd, " power save unit " also should can be integrated in the alternating current electromagnetic valve that will produce, so that the manufacturer of alternating current electromagnetic valve is given birth to
Output new " alternating current electromagnetic valve of economize on electricity noise elimination " integrated with " power save unit ".
Content of the invention
In order to reach above-mentioned target, the technical scheme of present invention design is：A kind of alternating current electromagnetic valve of economize on electricity noise elimination, including
Power save unit 100 with conventional AC magnetic valve two part it is characterised in that：Described power save unit 100 is by AC-DC translation circuit
101st, there is circuit 102, on-off circuit 103, keep voltage step-down circuit 104, bridge circuit 105 to form in switching pulse, and,
Input 5 end of described AC-DC translation circuit 101 is connected with the P1 end of AC voltage；There is circuit in described switching pulse
102 input 7 end is connected with output end 6 end of described AC-DC translation circuit 101；Described on-off circuit 103 defeated
Output end 8 end entering end 9 ends with described switching pulse generation circuit 102 is connected；1 end of described bridge circuit 105 with
The P1 end of AC voltage is connected, and 2 ends are all connected with described on-off circuit 103, described holding voltage step-down circuit 104, and 3
End, 4 ends are connected with the A1 end of the magnet exciting coil L in conventional AC magnetic valve, A2 end respectively；Described AC-DC translation circuit
101st, there is circuit 102, on-off circuit 103, keep voltage step-down circuit 104 to be all connected with the P2 end of AC voltage in switching pulse
Connect.
Described AC-DC translation circuit 101 has the circuit structure of following three kinds of patterns：
(a), dual threshold type：By input 5, output end 6, the first diode D1, first resistor R1, second resistance R2,
One electric capacity C1, the first transient voltage suppressor diode TVS1 (transient voltage suppression diode) and
Two transient voltage suppressor diode TVS2 form, and their connected mode is：Input 5 is connected with the P1 end of AC voltage；The
The positive pole of one diode D1 is connected with input 5, and negative pole is connected with one end of first resistor R1；First resistor R1 another
End is connected with the negative pole of the first transient voltage suppressor diode TVS1；After first electric capacity C1 and second resistance R2 are in parallel, its
The positive pole of positive terminal and the first transient voltage suppressor diode TVS1, the second transient voltage suppressor diode TVS2 negative pole homogeneous
Connect, negative pole end is connected with the P2 end of AC voltage；The positive pole of the second transient voltage suppressor diode TVS2 is connected with output end 6
Connect.
Breakdown voltage U of the first transient voltage suppressor diode TVS1B1For described AC-DC translation circuit 101 first
Threshold value, when the instantaneous value of the random AC voltage connected is more than described first threshold, the first described transient voltage suppresses two
Pole pipe TVS1 turns on, conversely, when the instantaneous value of AC voltage is less than described first threshold, the first described transient voltage suppresses
Diode TVS1 ends；Breakdown voltage U of the second transient voltage suppressor diode TVS2B2For described AC-DC translation circuit 101
Second Threshold, when the voltage between the positive pole and negative pole of the first electric capacity C1 is higher than described Second Threshold, described second
Transient voltage suppressor diode TVS2 turns on, conversely, the voltage between the positive pole and negative pole of the first electric capacity C1 is less than described
During Second Threshold, the second described transient voltage suppressor diode TVS2 ends.
(b), single threshold type：By input 5, output end 6, the first diode D1, first resistor R1, second resistance R2,
One electric capacity C1, the first transient voltage suppressor diode TVS1 form, and their connected mode is：Input 5 and the P1 of AC voltage
End is connected；After first diode D1, first resistor R1, the first transient voltage suppressor diode TVS1 are in series successively, one end
I.e. the positive terminal of the first diode D1 is connected with input 5, the other end be the first transient voltage suppressor diode TVS1 just
Extremely it is connected with output end 6；After first electric capacity C1 and second resistance R2 are in parallel, its positive terminal is connected with output end 6, bears
Extremely it is connected with the P2 end of AC voltage.
(c), resistance, appearance voltage-dropping type；By input 5, output end 6, the 7th diode D7, the 7th resistance R7, second resistance R2,
First electric capacity C1, the 4th electric capacity C4, the 3rd transient voltage suppressor diode TVS3 form, and their connected mode is：Input 5
It is connected with the P1 end of AC voltage；After 4th electric capacity C4 and the 7th resistance R7 is in parallel, one end is connected with input 5, another
End is all connected with the positive pole of the 7th diode D7, the negative pole of the 3rd transient voltage suppressor diode TVS3；First electric capacity C1 with
After second resistance R2 is in parallel, its positive terminal is connected with output end 6, and negative pole end is connected with the P2 end of AC voltage；3rd wink
The positive pole of state voltage suppression diode TVS3 is also connected with the P2 end of AC voltage.
Described the first transient voltage suppressor diode TVS1, the second transient voltage suppressor diode TVS2, the 3rd transient state
Voltage suppression diode TVS3 all can be with ambipolar transient voltage suppressor diode (Bipolar transient voltage
Suppression diode), piezoresistor (pressure sensitive resistor), gas-discharge tube (gaseous
Discharge tube), semiconductor discharge tube (thyristor surge suppressors), electrostatic restrain device (Electro-
Static discharge) or Transient Voltage Suppressor (Transient Voltage Suppressor) replacement.
Described switching pulse occurs circuit 102 to have the circuit structure of following three kinds of patterns：
(a), triode type：By input 7, output end 8,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th
Resistance R6, the second electric capacity C2 and triode T1 form, and their connected mode is：Input 7 and described AC-DC conversion electricity
Output end 6 end on road 101 is connected；One end of 3rd resistor R3, one end of the 5th resistance R5 are all connected with input 7；The
One end of the other end of three resistance R3 and the second electric capacity C2, one end of the 4th resistance R4, the base stage of triode T1 are all connected；The
The other end of two electric capacity C2, the other end of the 4th resistance R4, the emitter stage of triode T1 are all connected with the P2 end of AC voltage；Three
The colelctor electrode of pole pipe T1, the other end of the 5th resistance R5 are all connected with output end 8；6th resistance R6 one end and output end 8 phase
Connect, the other end is connected with the P2 end of AC voltage.
(b), integrated circuit type I type：By input 7, output end 8, the 8th resistance R8, the 9th resistance R9, the tenth resistance
R10, the 11st resistance R11, the 12nd resistance R12, the 5th electric capacity C5 and integrated voltage comparator IC1 composition, their company
The mode of connecing is：Input 7 is connected with output end 6 end of described AC-DC translation circuit 101；One end of 8th resistance R8,
One end of ten resistance R10, one end of the 12nd resistance R12,8 pin of integrated voltage comparator IC1 are all connected with input 7；
One end of 9th resistance R9, one end of the 11st resistance R11,4 pin of integrated voltage comparator IC1, one end of the 5th electric capacity C5
All it is connected with the P2 end of AC voltage；The other end of the 8th resistance R8, the other end of the 9th resistance R9, the 5th electric capacity C5 another
End is all connected with inversion signal input 2 pin of integrated voltage comparator IC1；The other end of the tenth resistance R10, the 11st electricity
The other end of resistance R11 is all connected with in-phase signal input 3 pin of integrated voltage comparator IC1；12nd resistance R12's is another
One end is then all connected with 1 pin of integrated voltage comparator IC1, output end 8.
(C), integrated circuit type II type：By input 7, output end 8, the 13rd resistance R13, the 14th resistance R14, the tenth
Five resistance R15, the 16th resistance R16, the 17th resistance R17, the 6th electric capacity C6 and integrated voltage comparator IC1 composition, it
Connected mode be：Input 7 is connected with output end 6 end of described AC-DC translation circuit 101；6th electric capacity C6,
13 resistance R13, the 15th resistance R15, the respective one end of the 17th resistance R17 and integrated voltage comparator IC1 8 pin equal
It is connected with input 7；The 4 of 14th resistance R14, the respective one end of the 16th resistance R16 and integrated voltage comparator IC1
Pin is all connected with the P2 end of AC voltage；The other end of the 6th electric capacity C6, the other end of the 13rd resistance R13, the 14th resistance
The other end of R14 is all connected with in-phase signal input 3 pin of integrated voltage comparator IC1；15th resistance R15's is another
End, the other end of the 16th resistance R16 are all connected with inversion signal input 2 pin of integrated voltage comparator IC1；17th
The other end of resistance R17,1 pin of integrated voltage comparator IC1 are all connected with output end 8.
Described on-off circuit 103 is by input 9 end, the 6th diode D6 and FET FET (Field Effect
Transistor) form, and, output end 8 end that input 9 end occurs circuit 102 with described switching pulse is connected；The
The positive pole of six diode D6 is connected with 2 ends of bridge circuit 105；Negative pole is connected with the drain electrode of FET FET；Field-effect
The grid of pipe FET is connected with input 9 end, and source electrode is connected with the P2 end of AC voltage.
Described FET FET can be with other switching devices such as unidirectional thyristor (Silicon Controlled
Rectifier, SCR), bidirectional thyristor (Triode AC Switch, TRIAC), insulated gate bipolar transistor
(Insulatend Gate Bipolar Transistor, IGBT), electron injection enhancement gate transistor (Injection
Enhanced Gate Tansistor, IEGT), SITH (Static Induction Thyristor, SITH)
Replace.
Described holding voltage step-down circuit 104 is made up of the 3rd electric capacity C3,2 end phases of its one end and bridge circuit 105
Connect, the other end is connected with the P2 end of AC voltage.
Described bridge circuit 105 is by 1 end, 2 ends, 3 ends, 4 ends, the second diode D2, the 3rd diode D3, the four or two pole
Pipe D4, the 5th diode D5 form, and their connected mode is：The negative pole of the second diode D2, the positive pole of the 3rd diode D3
All it is connected with 1 end, 1 end is then connected with the P1 end of AC voltage；The negative pole of the 4th diode D4, the positive pole of the 5th diode D5
All be connected with 2 ends, 2 ends then with on-off circuit 103 in the 6th diode D6 positive pole, keep voltage step-down circuit 104 in
One end of the 3rd electric capacity C3 homogeneously connect；The negative pole of the 3rd diode D3, the negative pole of the 5th diode D5 are all connected with 3 ends
Connect, 3 ends are then connected with the A1 end of magnet exciting coil L；The positive pole of the second diode D2, the 4th diode D4 positive pole all with 4 ends
It is connected, 4 ends are then connected with the A2 end of magnet exciting coil L.
The operating characteristic of the present invention is：High-power promotion, small-power keep.
The application present invention, can obtain following beneficial effect：
1st, economize on electricity.Although promoting valve element to need high-tension high-power to setting position, because this " promotes " time only a few milli
Second, therefore, when magnetic valve runs, the ratio that the power consumption in " promotion " stage is shared in total power consumption is very little, and magnetic valve runs
When the size of power consumption mainly to be embodied by power (hereinafter referred to as " holding the power ") size in " holding " stage, keep power
Greatly, its power consumption is just big；Conversely, keeping power little, its power consumption is just little, just economizes on electricity.
, due to having the operating characteristic of " high-power promotion, small-power keep ", therefore, electric energy is high for the present invention.
The holding power of the AC220V conventional AC magnetic valve of the hydraulic pressure of actual measurement-kind of model is 34.6W, applies this
After bright, holding power drop be 1.4W, electric energy reach 96% it can be seen that, the popularization and application present invention, can produce good
Energy-saving efficiency.
2nd, noise elimination.When conventional AC magnetic valve runs with noise " as shade with " noise can be heard without end.Apply this
After bright, can make alternating current electromagnetic valve realization " noise elimination " that magnetic valve is attached to the basal part of the ear and also can't hear a noise.This noise elimination function
For the alternating current electromagnetic valve being arranged on the household electrical appliance such as refrigerator, water purifier, there is great Practical significance.
3rd, temperature rise is little.Temperature rise is the important indicator weighing electronics or electric equipment products reliability, and temperature rise is little, and electronics or electrical equipment produce
The reliability of product is just high；Conversely, the reliability of electronics or electric equipment products is just low.The present invention is high due to electric energy, therefore temperature rise
Inevitable little.Actual motion shows：Under conditions of 30 DEG C of room temperatures, the alternating current electromagnetic valve manufactured by the application present invention is continuous to run 24
Be still room temperature after hour, and after conventional AC magnetic valve continuously runs half an hour, warmed up to more than 60 DEG C.
4th, save enamel-covered wire.The application present invention, can significantly save the enamel-covered wire of coiling magnet exciting coil.Actual measurement table
Bright, the former of the magnet exciting coil of AC220V alternating current electromagnetic valve of-kind of hydraulic pressure must be after 2500 circles, the application present invention, by this excitation
Coil reduces to 1000 circles, and alternating current electromagnetic valve still has the little premium properties of economize on electricity, noise elimination, temperature rise.
Brief description
Fig. 1 a is the schematic diagram of the alternating current electromagnetic valve "on" position of gas or liquid；
Fig. 1 b is the schematic diagram of the alternating current electromagnetic valve off-position of gas or liquid；
Fig. 2 a is the schematic diagram of the alternating current electromagnetic valve "on" position of hydraulic pressure；
Fig. 2 b is the schematic diagram of the alternating current electromagnetic valve off-position of hydraulic pressure；
Fig. 3 is the functional-block diagram of the present invention；
Fig. 4 is the circuit theory diagrams of embodiment 1；
Fig. 5 is the circuit theory diagrams of embodiment 2；
Fig. 6 is the circuit theory diagrams of embodiment 3；
Fig. 7 is the circuit theory diagrams of embodiment 4；
Fig. 8 is the circuit theory diagrams of embodiment 5；
Fig. 9 a is the oscillogram of AC voltage；
Fig. 9 b is the V1 voltage oscillogram of embodiment 1：
Fig. 9 C is the oscillogram of pulse voltage VC of embodiment 1.
Specific embodiment
Below in conjunction with the accompanying drawings, embodiments of the present invention are described.
Fig. 3 is the functional-block diagram of the present invention, and in figure shows：A kind of alternating current electromagnetic valve of economize on electricity noise elimination, single including economize on electricity
Unit 100 with conventional AC magnetic valve two part it is characterised in that：Described power save unit 100 by AC-DC translation circuit 101, open
Close pulse generating circuit 102, on-off circuit 103, keep voltage step-down circuit 104, bridge circuit 105 to form, and, described
Input 5 end of AC-DC translation circuit 101 is connected with the P1 end of AC voltage；There is the defeated of circuit 102 in described switching pulse
Enter end 7 ends to be connected with output end 6 end of described AC-DC translation circuit 101；Input 9 end of described on-off circuit 103
Output end 8 end circuit 102 occurring with described switching pulse is connected；1 end of described bridge circuit 105 and AC voltage
P1 end is connected, and 2 ends are all connected with described on-off circuit 103, described holding voltage step-down circuit 104, and 3 ends, 4 ends are divided
It is not connected with the A1 end of the magnet exciting coil L in conventional AC magnetic valve, A2 end；Described AC-DC translation circuit 101, switch
Pulse generating circuit 102, on-off circuit 103, holding voltage step-down circuit 104 are all connected with the P2 end of AC voltage.
Fig. 4 is the circuit theory diagrams of embodiment 1, and in figure shows：
Input 5, output end 6, the first diode D1, first resistor R1, second resistance R2, the first electric capacity C1, the first wink
State voltage suppression diode TVS1 and the second transient voltage suppressor diode TVS2 constitutes the AC-DC translation circuit of dual threshold type
101；Their connected mode is：Input 5 is connected with the P1 end of AC voltage；The positive pole of the first diode D1 and input 5
It is connected, negative pole is connected with one end of first resistor R1；The other end of first resistor R1 and the first transient voltage suppress two poles
The negative pole of pipe TVS1 is connected；After first electric capacity C1 and second resistance R2 are in parallel, its positive terminal and the first transient voltage suppress
The positive pole of diode TVS1, the negative pole of the second transient voltage suppressor diode TVS2 are all connected, the P2 of negative pole end and AC voltage
End is connected；The positive pole of the second transient voltage suppressor diode TVS2 is connected with output end 6.
Input 7, output end 8,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the second electric capacity
There is circuit 102 in the switching pulse that C2 and triode T1 constitutes triode type；Their connected mode is：Input 7 with
Output end 6 end of the AC-DC translation circuit 101 of described dual threshold type is connected；One end of 3rd resistor R3, the 5th resistance R5
One end be all connected with input 7；One end of the other end of 3rd resistor R3 and the second electric capacity C2, the one of the 4th resistance R4
End, the base stage of triode T1 are all connected；The other end of the second electric capacity C2, the other end of the 4th resistance R4, triode T1 send out
Emitter-base bandgap grading is all connected with the P2 end of AC voltage；The colelctor electrode of triode T1, the other end of the 5th resistance R5 are all connected with output end 8
Connect；6th resistance R6 one end is connected with output end 8, and the other end is connected with the P2 end of AC voltage.
Input 9 end, the 6th diode D6 and FET FET constitute on-off circuit 103；And, input 9 end with
The switching pulse of described triode type occurs output end 8 end of circuit 102 to be connected；The positive pole of the 6th diode D6 and electric bridge
2 ends of circuit 105 are connected；Negative pole is connected with the drain electrode of FET FET；The grid of FET FET and input 9 end
It is connected, source electrode is connected with the P2 end of AC voltage.
It will be appreciated by those skilled in the art that, described FET FET can be for example unidirectional with other switching devices
IGCT (Silicon Controlled Rectifier, SCR), bidirectional thyristor (Triode AC Switch, TRIAC),
Insulated gate bipolar transistor (Insulatend Gate Bipolar Transistor, IGBT), electron injection enhancement grid are brilliant
Body pipe (Injection Enhanced Gate Tansistor, IEGT), SITH (Static Induction
Thyristor, SITH) replace.
3rd electric capacity C3 constitutes holding voltage step-down circuit 104, and its one end is connected with 2 ends of bridge circuit 105, separately
One end is connected with the P2 end of AC voltage.
1 end, 2 ends, 3 ends, 4 ends, the second diode D2, the 3rd diode D3, the 4th diode D4, the 5th diode D5 group
Become bridge circuit 105；Their connected mode is：The negative pole of the second diode D2, the 3rd diode D3 positive pole all with 1 end
It is connected, 1 end is then connected with the P1 end of AC voltage；The negative pole of the 4th diode D4, the 5th diode D5 positive pole all with 2 ends
Be connected, 2 ends then with on-off circuit 103 in the 6th diode D6 positive pole, keep voltage step-down circuit 104 in the 3rd electricity
The one end holding C3 homogeneously connects；The negative pole of the 3rd diode D3, the negative pole of the 5th diode D5 are all connected with 3 ends, 3 ends then with
The A1 end of magnet exciting coil L is connected；The positive pole of the second diode D2, the positive pole of the 4th diode D4 are all connected with 4 ends, 4 ends
Then it is connected with the A2 end of magnet exciting coil L.
It will be appreciated by those skilled in the art that：The A1 end of described magnet exciting coil L, A2 end can be connected with reciprocity.
The AC-DC translation circuit 101 of the present embodiment 1 is the AC-DC translation circuit of dual threshold type, the first transient voltage suppression
Breakdown voltage U of diode TVS1B1For its first threshold, when the instantaneous value of the random AC voltage connected is more than described first
During threshold value, described first transient voltage suppressor diode TVS1 conducting, conversely, when the instantaneous value of AC voltage is less than described the
During one threshold value, the first described transient voltage suppressor diode TVS1 ends；Second transient voltage suppressor diode TVS2 hits
Wear voltage UB2For its Second Threshold, the voltage between the positive pole and negative pole of the first electric capacity C1 is higher than described Second Threshold
When, the second described transient voltage suppressor diode TVS2 turns on, conversely, the electricity between the positive pole and negative pole of the first electric capacity C1
Force down when described Second Threshold, the second described transient voltage suppressor diode TVS2 ends.
In conjunction with Fig. 4, Fig. 9 a, the mathematic(al) representation from the AC voltage of P1, P2 end input is：
U=UmSin(ωt+φ)
In above formula：U is the instantaneous value of AC voltage, UmFor AC voltage amplitude, ω is the angular frequency of AC voltage, and φ is
The initial phase angle of AC voltage.
For concise explanation, it is now assumed that initial phase angle φ=0, then the expression formula of the instantaneous value u of AC voltage is：
U=UmSinωt
Its waveform is as illustrated in fig. 9.
The main course of work of the present embodiment 1 can be illustrated in conjunction with Fig. 4, Fig. 9 a, Fig. 9 b, Fig. 9 c：
If during t=t1, AC Voltage On state, the instantaneous value u1 due to now AC voltage is more than first threshold UB1I.e.
U1=UmSin ω t1 ＞ UB1
Therefore the first described transient voltage suppressor diode TVS1 conducting, voltage V1 gradually rises, during to t=t3, AC electricity
The instantaneous value of pressure is amplitude Um, voltage V1 rises to peak.
It will be apparent to those skilled in the art following some：
1st, voltage V1 is in t3～t4, t4～t01, t01～t02, t02～t5 time domain and its corresponding time domain, its value
Successively decrease；
2nd, in t5～t6 time domain and its corresponding time domain, its value is incremented by voltage V1；
3rd, voltage V1 is the DC voltage with ripple voltage, but ripple voltage has no effect on the work of the present invention, its ripple
Shape is as shown in figure 9b.
In conjunction with Fig. 4, Fig. 9 b, Fig. 9 b, in the time domain of t1～t2, the value of voltage V1 is less than Second Threshold UB2I.e. V1 ＜ UB2,
Second transient voltage suppressor diode TVS2 cut-off, voltage V2=0
During t=t2, V1=UB2, the second transient voltage suppressor diode TVS2 conducting, the value of voltage V2 begins to ramp up.Due to
Now, the voltage on the second electric capacity C2 is zero, its equivalent short circuit, therefore Vb=0, and triode T1 ends, and voltage Vc is high level, that is,
There is the output end 8 end output high level of circuit 102, the field effect in described on-off circuit 103 in the switching pulse of triode type
Should pipe FET conducting, magnetic valve enter " promotion " stage, AC voltage P1 end be high level P2 end for low level positive half cycle when,
Will be defeated along the path at P1 end 1 end D3 3 end A1 end L A2 end 4 end D4 2 end D6 FET P2 end
Enter magnetic valve and promote " promotion power " needed for valve element.Due to the 3rd diode D3 in above-mentioned path, the 4th diode D4, the 6th
Diode D6 and FET FET is in the minimum conducting state of impedance, is equivalent to AC voltage and is applied directly to magnetizing inductance L
Two ends, therefore, in " promotion " stage, the promotion power that AC voltage provides is larger.
During t=t9, the process that by 3rd resistor R3, the second electric capacity C2 charged with V2 voltage, on the second electric capacity C2
Voltage is the voltage Vb >=0.7v (referring to silicon triode, germanium triode is then 0.3v) between triode T1 base stage, emitter stage, three poles
Pipe T1 turns on, and voltage Vc is changed into low level, and that is, the switching pulse of triode type occurs output end 8 end of circuit 102 to export low electricity
Flat, in on-off circuit 103 FET FET cut-off, magnetic valve enters " holding " stage.
In " holding " stage of magnetic valve, AC voltage is by the holding voltage step-down circuit 104 being made up of the 3rd electric capacity C3
There is provided for magnetic valve and keep power, its process is：P1 end be high level P2 end be the positive half cycle of low level AC voltage, AC voltage
Path along P1 end 1 end D3 3 end A1 end L A2 end 4 end D4 2 end C3 P2 end carries for magnetic valve
For keeping power；P2 end be high level P1 end be low level AC voltage negative half period, AC voltage is along P2 end C3 2 end
The path at D5 3 end A1 end L A2 end 4 end D2 1 end P1 end provides for magnetic valve and keeps power.Above-mentioned road
In footpath, AC voltage is all applied at the two ends of magnetizing inductance L after the 3rd electric capacity C3 step-down again, therefore, in " holding " stage, AC
" holding power " that voltage provides is less, much smaller than aforesaid " promotion power ".
In brief：According to promoting the valve element must be with high-power to setting position, holding valve element need only small-power in setting position
The design made of electromagnetic valve work principle, one of feature of the present invention is：The promotion stage with high-power operation, keep the stage with
Small-power works, or sketches and be：High-power promotion, small-power keep.
Implement the method for operation of " high-power promotion, small-power keep ", be that the present invention obtains the former of good electric energy
Cause.
During t=t14, AC voltage turns off, and magnetic valve enters the RESET stage, and " valve element " retreats to original position.
In conjunction with Fig. 9 c, it is pulse voltage that the switching pulse of described triode type occurs the output voltage Vc of circuit 102, t2
～t9 time domain is the time domain of pulse " accounting for ", and it exports high level；T9～t14 time domain is the time domain of pulse " empty ", and it exports low electricity
Flat, its impulse waveform is as is shown in fig. 9 c.
In sum；The course of work of the present embodiment can be divided into the three below stage：
1st, t2～t9 time domain is the promotion stage, and in this t2～t9 time domain, pulse voltage Vc is high level, FET
FET turns on, and with it as main channel, AC control source magnetic valve promotes larger " the promotion power " needed for valve element；
2nd, t9～t14 time domain is the holding stage, and in this t9～t14 time domain, pulse voltage Vc is low level, FET
FET ends, and AC voltage passes through the 3rd electric capacity C3 and inputs less " holding power "；
3rd, t14～t15 time domain is reseting stage, in this t14～t15 time domain, AC voltage power-off, power save unit 100 with
Magnetic valve all resets.
During t=t15, AC voltage recloses, and magnetic valve reenters " promotion ", " holding ", the work period of RESET
In.
Fig. 5 is the circuit theory diagrams of embodiment 2, and its switching pulse occurs circuit 102, on-off circuit 103, keeps voltage
Reduction voltage circuit 104, bridge circuit 105 are all same as Example 1.But AC-DC translation circuit 101 is different from embodiment 1, embodiment
The 1 AC-DC translation circuit using dual threshold type, the present embodiment 2 uses the AC-DC translation circuit of single threshold type.
In conjunction with Fig. 5, the AC-DC translation circuit of the single threshold type of the present embodiment 2 is by input 5, output end 6, the one or two pole
Pipe D1, first resistor R1, second resistance R2, the first electric capacity C1, the first transient voltage suppressor diode TVS1 composition, their company
The mode of connecing is：Input 5 is connected with the P1 end of AC voltage；First diode D1, first resistor R1, the first transient voltage suppression
After diode TVS1 is in series successively, one end is that the positive terminal of the first diode D1 is connected with input 5, and the other end is first
The positive terminal of transient voltage suppressor diode TVS1 is connected with output end 6；After first electric capacity C1 and second resistance R2 are in parallel,
Its positive terminal is connected with output end 6, and negative pole end is connected with the P2 end of AC voltage.
In the present embodiment 2, breakdown voltage U of the first transient voltage suppressor diode TVS1B1For described single threshold type
AC-DC translation circuit 101 threshold value, when the instantaneous value of the random AC voltage connected is more than described threshold value, described the
Transient voltage suppression diode TVS1 conducting, conversely, when the instantaneous value of AC voltage is less than described threshold value, described first
Transient voltage suppressor diode TVS1 ends.
The course of work of the present embodiment 2 is same as Example 1.
Fig. 6 is the circuit theory diagrams of embodiment 3, and its switching pulse occurs circuit 102, on-off circuit 103, keeps voltage
Reduction voltage circuit 104, bridge circuit 105 are all same as Example 1.But AC-DC translation circuit 101 is different from embodiment 1, embodiment
The 1 AC-DC translation circuit using dual threshold type, the present embodiment 3 uses resistance, holds the AC-DC translation circuit of voltage-dropping type.
In conjunction with Fig. 6, resistance that the present embodiment 3 adopts, hold the AC-DC translation circuit of voltage-dropping type by input 5, output end 6, the
Seven diode D7, the 7th resistance R7, second resistance R2, the first electric capacity C1, the 4th electric capacity C4, the 3rd transient voltage suppressor diode
TVS3 forms, and their connected mode is：Input 5 is connected with the P1 end of AC voltage；4th electric capacity C4 and the 7th resistance R7
After being in parallel, one end is connected with input 5, and the positive pole of the other end and the 7th diode D7, the 3rd transient voltage suppress two poles
The negative pole of pipe TVS3 is all connected；After first electric capacity C1 and second resistance R2 are in parallel, its positive terminal is connected with output end 6,
Negative pole end is connected with the P2 end of AC voltage；The positive pole of the 3rd transient voltage suppressor diode TVS3 also P2 end phase with AC voltage
Connect.
In described resistance, the AC-DC translation circuit of appearance voltage-dropping type, the 4th electric capacity C4, the 7th resistance R7 play resistance, hold fall
Pressure acts on, and the 7th diode D7 plays rectified action, and the 3rd transient voltage suppressor diode TVS3 then plays following effect：
1st, pressure stabilization function, in this circuit, it is equivalent to the DC electricity that Zener diode stabilizes the output of output end 6 end
Pressure；
2nd, discharge process, P1 end be high level P2 end be the positive half cycle of low level AC voltage, AC voltage is to the 4th electric capacity
C4 charge, P2 end be high level P1 end be low level AC voltage negative half period, the 4th electric capacity C4 is by the 3rd described transient state
Voltage suppression diode TVS3 discharges.
The course of work of the present embodiment 3 is same as Example 1.
Fig. 7 is the circuit theory diagrams of embodiment 4, its on-off circuit 103, holding voltage step-down circuit 104, bridge circuit
105 is all same as Example 1, and the AC-DC translation circuit 101 hindering, holding voltage-dropping type is same as Example 3, but switching pulse occurs
Circuit 102 is different from embodiment 1, and embodiment 1 uses triode type switching pulse and circuit occurs, and the present embodiment 4 adopts
It is that integrated circuit type I type switching pulse occurs circuit.
In conjunction with Fig. 7, there is circuit by input 7, output end in the integrated circuit type I type switching pulse that the present embodiment 4 adopts
8th, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 11st resistance R11, the 12nd resistance R12, the 5th electric capacity C5 with
And integrated voltage comparator IC1 forms, their connected mode is：Input 7 is become with the AC-DC of described resistance, appearance voltage-dropping type
Output end 6 end changing circuit 101 is connected；One end of 8th resistance R8, one end of the tenth resistance R10, the 12nd resistance R12
One end, 8 pin of integrated voltage comparator IC1 are all connected with input 7；One end of 9th resistance R9, the 11st resistance R11
One end, 4 pin of integrated voltage comparator IC1, one end of the 5th electric capacity C5 are all connected with the P2 end of AC voltage；8th resistance R8
The other end, the other end of the 9th resistance R9, the inversion signal all with integrated voltage comparator IC1 for the other end of the 5th electric capacity C5
Input 2 pin is connected；The other end of the tenth resistance R10, the 11st resistance R11 the other end all and integrated voltage comparator
In-phase signal input 3 pin of IC1 is connected；The other end of the 12nd resistance R12 then with 1 pin of integrated voltage comparator IC1,
Output end 8 is all connected.
Described integrated voltage comparator IC1 select integrated circuit LM393 can also from integrated circuit TDC393,
IR393、LA393、LA6393、MB47393、TA75393、AN6914、upc277c、LM293
The course of work of the present embodiment 4 is substantially the same manner as Example 1, except that：The input of input switching circuit 103
Hold the pulse voltage at 9 ends, produced by triode T1 in embodiment 1, and be then by integrated voltage ratio in the present embodiment 4
Produce compared with device IC1.
Fig. 8 is the circuit theory diagrams of embodiment 5, its on-off circuit 103, holding voltage step-down circuit 104, bridge circuit
105 is all same as Example 1, and the AC-DC translation circuit 101 hindering, holding voltage-dropping type is same as Example 3, but switching pulse occurs
Circuit 102 is different from embodiment 1, and embodiment 1 uses triode type switching pulse and circuit occurs, and the present embodiment 4 adopts
It is that integrated circuit type II type switching pulse occurs circuit.
In conjunction with Fig. 8, there is circuit by input 7, output end in the integrated circuit type II type switching pulse that the present embodiment 5 adopts
8th, the 13rd resistance R13, the 14th resistance R14, the 15th resistance R15, the 16th resistance R16, the 17th resistance R17, the 6th
Electric capacity C6 and integrated voltage comparator IC1 forms, and their connected mode is：Input 7 and described AC-DC translation circuit
101 output end 6 end is connected；6th electric capacity C6, the 13rd resistance R13, the 15th resistance R15, the 17th resistance R17 are each
One end and 8 pin of integrated voltage comparator IC1 be all connected with input 7；14th resistance R14, the 16th resistance R16
4 pin of respective one end and integrated voltage comparator IC1 are all connected with the P2 end of AC voltage；6th electric capacity C6's is another
End, the other end of the 13rd resistance R13, the in-phase signal all with integrated voltage comparator IC1 for the other end of the 14th resistance R14
Input 3 pin is connected；The other end of the 15th resistance R15, the 16th resistance R16 the other end all and integrated voltage comparator
Inversion signal input 2 pin of IC1 is connected；The other end of the 17th resistance R17, integrated voltage comparator IC1 1 pin all with
Output end 8 is connected.
Understand, the course of work of the present embodiment 5 is substantially the same manner as Example 1 according to embodiment 4.
In conjunction with Fig. 4～Fig. 8, it will be appreciated by those skilled in the art that：The first transient state electricity described in above-mentioned related embodiment
Oppressive diode TVS1 processed, the second transient voltage suppressor diode TVS2, the 3rd transient voltage suppressor diode TVS3 are all permissible
With ambipolar transient voltage suppressor diode (Bipolar transient voltage suppression diode), pressure-sensitive
Resistor (pressure sensitive resistor), gas-discharge tube (gaseous discharge tube), semiconductor
Discharge tube (thyristor surge suppressors), electrostatic restrain device (Electro-Static discharge) or wink
State voltage suppressor (Transient Voltage Suppressor) substitutes.
Above describe technical scheme, all, without departing from the replacement of technical scheme essence, are all answered
Scope in the claim of the present invention.
Claims (5)
1. a kind of alternating current electromagnetic valve of resistance-capacitance depressurization type economize on electricity noise elimination, including power save unit (100) and conventional AC magnetic valve two
Part it is characterised in that：
Described conventional AC magnetic valve is made up of magnet exciting coil, valve element, back-moving spring；
There is circuit (102), on-off circuit by AC-DC translation circuit (101), switching pulse in described power save unit (100)
(103), voltage step-down circuit (104), bridge circuit (105) is kept to form, and, described AC-DC translation circuit (101)
Input 5 is connected with the P1 end of AC voltage；There is the input 7 of circuit (102) and described AC-DC in described switching pulse
The output end 6 of translation circuit (101) is connected；The input 9 of described on-off circuit (103) and described switching pulse occur
The output end 8 of circuit (102) is connected；Described 1 end of bridge circuit (105) is connected with the P1 end of AC voltage, 2 ends and institute
The on-off circuit (103) stated, described holding voltage step-down circuit (104) are all connected, and 3 ends, 4 ends are electric with conventional AC respectively
The A1 end of the magnet exciting coil L in magnet valve, A2 end are connected；There is circuit in described AC-DC translation circuit (101), switching pulse
(102), on-off circuit (103), holding voltage step-down circuit (104) are all connected with the P2 end of AC voltage；
Described AC-DC translation circuit (101) is resistance-capacitance depressurization type translation circuit, and it is by input 5, output end 6, the 7th diode
D7, the 7th resistance R7, second resistance R2, the first electric capacity C1, the 4th electric capacity C4, the 3rd transient voltage suppressor diode TVS3 group
Become；
Wherein, input 5 is connected with the P1 end of AC voltage；After 4th electric capacity C4 and the 7th resistance R7 is in parallel, one end with defeated
Enter end 5 to be connected, the other end is all connected with the positive pole of the 7th diode D7, the negative pole of the 3rd transient voltage suppressor diode TVS3
Connect；After first electric capacity C1 and second resistance R2 are in parallel, its positive terminal is connected with output end 6, the P2 of negative pole end and AC voltage
End is connected；The positive pole of the 3rd transient voltage suppressor diode TVS3 is also connected with the P2 end of AC voltage.
2. resistance-capacitance depressurization type as claimed in claim 1 economize on electricity noise elimination alternating current electromagnetic valve it is characterised in that：
There is circuit (102) by input 7, output end 8,3rd resistor R3, the 4th resistance R4, the 5th resistance in described switching pulse
R5, the 6th resistance R6, the second electric capacity C2 and triode T1 form, and their connected mode is：Input 7 and described AC-
The output end 6 of DC translation circuit (101) is connected；One end of 3rd resistor R3, the 5th resistance R5 one end all with input 7 phase
Connect；One end of the other end of 3rd resistor R3 and the second electric capacity C2, one end of the 4th resistance R4, triode T1 base stage homogeneous
Connect；The other end of the second electric capacity C2, the other end of the 4th resistance R4, the P2 end all with AC voltage for the emitter stage of triode T1
It is connected；The colelctor electrode of triode T1, the other end of the 5th resistance R5 are all connected with output end 8；6th resistance R6 one end with
Output end 8 is connected, and the other end is connected with the P2 end of AC voltage.
3. resistance-capacitance depressurization type as claimed in claim 1 or 2 economize on electricity noise elimination alternating current electromagnetic valve it is characterised in that：
Described on-off circuit (103) is by input 9, the 6th diode D6 and FET FET (Field Effect
Transistor) form, and, the output end 8 that input 9 occurs circuit (102) with described switching pulse is connected；6th
The positive pole of diode D6 is connected with 2 ends of bridge circuit (105), and negative pole is connected with the drain electrode of FET FET；Field-effect
The grid of pipe FET is connected with input 9, and source electrode is connected with the P2 end of AC voltage.
4. resistance-capacitance depressurization type as claimed in claim 3 economize on electricity noise elimination alternating current electromagnetic valve it is characterised in that：
Described holding voltage step-down circuit (104) is made up of the 3rd electric capacity C3,2 end phases of its one end and bridge circuit (105)
Connect, the other end is connected with the P2 end of AC voltage.
5. resistance-capacitance depressurization type as claimed in claim 4 economize on electricity noise elimination alternating current electromagnetic valve it is characterised in that：
Described bridge circuit (105) is by 1 end, 2 ends, 3 ends, 4 ends, the second diode D2, the 3rd diode D3, the 4th diode
D4, the 5th diode D5 form, and their connected mode is：The negative pole of the second diode D2, the 3rd diode D3 positive pole equal
It is connected with 1 end, 1 end is then connected with the P1 end of AC voltage；The negative pole of the 4th diode D4, the 5th diode D5 positive pole equal
Be connected with 2 ends, 2 ends then with on-off circuit (103) in the 6th diode D6 positive pole, keep voltage step-down circuit (104)
In one end of the 3rd electric capacity C3 homogeneously connect；The negative pole of the 3rd diode D3, the negative pole of the 5th diode D5 are all connected with 3 ends
Connect, 3 ends are then connected with the A1 end of magnet exciting coil L；The positive pole of the second diode D2, the 4th diode D4 positive pole all with 4 ends
It is connected, 4 ends are then connected with the A2 end of magnet exciting coil L.
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| CN201510091365.4A CN104595557B (en) | 2015-03-01 | 2015-03-01 | Resistance-capacitance voltage reduction type power-saving and noise-reducing alternating current electromagnetic valve |
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| CN105402469B (en) * | 2015-12-01 | 2018-05-11 | 宁波市镇海华泰电器厂 | The economize on electricity DC electromagnetic valve of circuit occurs with triode type start pulse |
| CN106057577B (en) * | 2016-06-25 | 2018-01-26 | 宁波市镇海华泰电器厂 | Using special-shaped electric bridge and the power-saving alternating-current contactor of auxiliary contact |
| CN106783012B (en) * | 2016-12-27 | 2018-06-19 | 宁波市镇海华泰电器厂 | The electromagnet of efficient electricity-saving |
| CN106783009B (en) * | 2016-12-27 | 2018-05-04 | 宁波市镇海华泰电器厂 | Using the alternating electromagnet of accumulator |
| CN106783011B (en) * | 2016-12-27 | 2018-05-11 | 宁波市镇海华泰电器厂 | Using the alternating electromagnet of half-bridge circuit |
| JP7122294B2 (en) * | 2019-08-13 | 2022-08-19 | Ckd株式会社 | solenoid valve manifold |
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| DE2614004A1 (en) * | 1975-04-16 | 1976-10-28 | Bridon Engineering Ltd | ACTUATION DEVICE |
| CN101737551A (en) * | 2010-02-02 | 2010-06-16 | 中国航天科技集团公司烽火机械厂 | High-speed electromagnetic valve driver circuit |
| CN203645566U (en) * | 2013-12-27 | 2014-06-11 | 陕西烽火电子股份有限公司 | Airborne AC-DC power supply conversion device with two ways of output voltage |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008263724A (en) * | 2007-04-12 | 2008-10-30 | Sharp Corp | Ac-dc conversion circuit and cooling apparatus using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2614004A1 (en) * | 1975-04-16 | 1976-10-28 | Bridon Engineering Ltd | ACTUATION DEVICE |
| CN101737551A (en) * | 2010-02-02 | 2010-06-16 | 中国航天科技集团公司烽火机械厂 | High-speed electromagnetic valve driver circuit |
| CN203645566U (en) * | 2013-12-27 | 2014-06-11 | 陕西烽火电子股份有限公司 | Airborne AC-DC power supply conversion device with two ways of output voltage |
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