CN206135389U - Under -voltage tripper - Google Patents
Under -voltage tripper Download PDFInfo
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- CN206135389U CN206135389U CN201620998754.5U CN201620998754U CN206135389U CN 206135389 U CN206135389 U CN 206135389U CN 201620998754 U CN201620998754 U CN 201620998754U CN 206135389 U CN206135389 U CN 206135389U
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Abstract
The utility model provides an under -voltage tripper, include: rectifier circuit and the power supply circuit who is connected with rectifier circuit, voltage comparison circuit and trip circuit still include: pulse generating circuit, starting circuit and drive circuit, voltage comparison circuit is connected to pulse generating circuit one end for generate high -frequency pulse signal when input voltage is greater than the predetermined value, starting circuit is connected to pulse generating circuit's the other end, is used for sending high -frequency pulse signal to starting circuit, and starting circuit and drive circuit are connected, is used for control drive circuit start -up when receiving high -frequency pulse signal, and drive circuit connects high -frequency pulse signal 1, is used for driving high -frequency pulse signal 1 work. This scheme adopts high -frequency pulse signal drive trip coil's actuation and disconnection, not only improved trip coil life, reduced trip coil's consumption, reduced under -voltage tripper's noise at work moreover, adopt the mode that starts at full speed, the sensitivity that has improved under -voltage tripper.
Description
Technical field
This utility model is related to electronics field, and in particular to a kind of device for under-voltage releasing equipment.
Background technology
Device for under-voltage releasing equipment referred to when the terminal voltage of electrical apparatus release is down to predetermined value, is opened or closed mechanical switch electrical equipment,
In being used for chopper.Existing device for under-voltage releasing equipment is mostly to drive tripping coil adhesive with low-frequency pulse, and its general work is former
Reason is as follows：
Under-voltage value is detected using stabilivolt, when the input voltage of the input of alternating current power supply is higher than the under-voltage of device for under-voltage releasing equipment
During preset value, stabilivolt is in running order, and the grid for making the metal-oxide-semiconductor of trip circuit keeps high level, and then makes trip circuit
Metal-oxide-semiconductor conducting, tripping coil adhesive；When the input voltage of the input of alternating current power supply is preset less than the under-voltage of device for under-voltage releasing equipment
During value, stabilivolt does not work, and the grid of the metal-oxide-semiconductor of trip circuit is changed into low level, turns off metal-oxide-semiconductor, and tripping coil disconnects, from
And protect subsequent conditioning circuit.Although such scheme circuit design is simple, the MOS that high level directly drives trip circuit is used
The mode of pipe, under tripping coil attracting state, can persistently have electric current to pass through in tripping coil, and life-time service is easily caused dropout
Coil heating, the power consumption of tripping coil is larger, not only affects the service life of tripping coil, and reduces device for under-voltage releasing equipment
Service behaviour.
Utility model content
Therefore, the technical problems to be solved in the utility model is the tripping coil of device for under-voltage releasing equipment in prior art because sending out
Thermal conductivity causes its short life, service behaviour poor.
To achieve these goals, this utility model provides a kind of device for under-voltage releasing equipment, including：Rectification circuit and with institute
Power circuit, voltage comparator circuit and the trip circuit of rectification circuit connection are stated, is also included：Pulse generation circuit, start-up circuit
And drive circuit, described pulse generation circuit one end connects the voltage comparator circuit, predetermined for being more than in input voltage
High-frequency pulse signal is generated during value, the other end of the pulse generation circuit connects the start-up circuit, for the startup
Circuit sends the high-frequency pulse signal, and the start-up circuit is connected with the drive circuit, for receiving the high frequency
Control the drive circuit during pulse signal to start, the drive circuit connects the trip circuit, for driving the dropout
Circuit works.
Preferentially, the pulse generation circuit includes：Schmidt trigger U1C, diode D6a, diode D6b, resistance
R11, resistance R6, electrochemical capacitor C9, diode D3 and resistance R2, wherein, the anode of the diode D6a connects the resistance
One end of R6, the negative electrode of the diode D6b connects one end of the resistance R11, and the resistance R6's and resistance R11 is another
The anode of one end, the anode of the electrochemical capacitor C9 and the diode D3 connects respectively the 5 of the Schmidt trigger U1C
Foot, one end of the negative electrode of the diode D6a, the anode of the diode D6b and the resistance R2 connects respectively described applying
6 feet of schmitt trigger U1C, the other end of the resistance R2 connects respectively the start-up circuit and the drive circuit, described
The negative electrode of diode D3 connects the voltage comparator circuit, the minus earth of the electrochemical capacitor C9.
Preferentially, the start-up circuit includes：Electric capacity C2, resistance R17, diode D11, Schmidt trigger U1B and
Diode D10, wherein, one end of the anode connection resistance R17 of the diode D11, the negative electrode of the diode D11,
One end of the other end of the resistance R17 and the electric capacity C2 connects respectively 3 feet of the Schmidt trigger U1B, described
4 feet of Schmidt trigger U1B connect the negative electrode of the diode D10, and the anode of the diode D10 connects respectively the electricity
Resistance R2 and the drive circuit, the other end of the electric capacity C2 connects the voltage comparator circuit.
Preferentially, the drive circuit includes：Resistance R14, Schmidt trigger U1D, U1E and U1F, wherein, it is described to apply
Connect the resistance R2 and the diode respectively after the 13 feet parallel connection of 9 feet of schmitt trigger U1D, 11 feet of U1E and U1F
The anode of D10, connects the resistance R14's after 8 feet of the Schmidt trigger U1D, 10 feet of U1E, the 12 feet parallel connection of U1F
One end, the other end of the resistance R14 connects the grid of metal-oxide-semiconductor Q1 in the trip circuit.
Preferentially, the voltage comparator circuit includes：Resistance R3, R5, R7, R12, R15, R9, R10, electric capacity C6, electrolysis electricity
Hold C8, comparator U3A, diode D4 and Schmidt trigger U1A, wherein, described resistance R5 one end connects the rectified current
Road, the other end connect one end of the resistance R12, and the other end of the resistance R12 connects one end of the resistance R15, described
Resistance R15 be connected with the anode of the common port, one end of the electric capacity C6 and the electrochemical capacitor C8 of the resistance R12 after public affairs
Altogether end connects 2 feet of the comparator U3A, the other end of the resistance R15, the other end of the electric capacity C6 and electrolysis electricity
The negative electrode for holding C8 is grounded respectively；One end of the resistance R9 and R10 connects respectively 3 feet of the comparator U3A, the resistance R9
The other end connect the power circuit, the other end ground connection of the resistance R10, the foot of comparator U3A outfans 1 connects institute
1 foot of Schmidt trigger U1A is stated, 2 feet of the Schmidt trigger U1A connect respectively negative electrode and the institute of the diode D3
State electric capacity C2；The anode of the diode D4 connects 3 feet of the comparator U3A, and the negative electrode connection of the diode D4 is described
One end of resistance R3, the other end of the resistance R3 connects 1 foot of the Schmidt trigger U1A, and described resistance R7 one end connects
Connect 1 foot of the Schmidt trigger U1A, the other end and connect the power circuit.
Preferentially, the power circuit includes：Power regulator U2, resistance R1 and R8, stabilivolt Z1, electric capacity C3 and electricity
Solution electric capacity C4 and C5, wherein, one end of the resistance R1 connects the rectification circuit, the other end connect the resistance R8 one
End, the other end of the resistance R8 connects the negative electrode of the stabilivolt Z1；The common port of the stabilivolt Z1 and resistance R8,
Common port after one end connection of the anode of the electrochemical capacitor C4 and the electric capacity C3 connects the 2 of the power regulator U2
Foot, is grounded, the electricity after the other end of the anode of the stabilivolt Z1, the negative electrode of the electrochemical capacitor C4 and the electric capacity C3
The anode of solution electric capacity C5 connects 3 feet of the power regulator U2, the minus earth of the electrochemical capacitor C5.
Preferentially, the trip circuit includes：Tripping coil L3, diode D5 and the metal-oxide-semiconductor Q1, wherein, described two
The anode of pole pipe D5 connects behind one end of the tripping coil L3, is concatenated into the drain electrode of the metal-oxide-semiconductor Q1, the diode D5's
Negative electrode connects after the other end connection of the tripping coil L3, is concatenated into the rectification circuit, and the source electrode of the metal-oxide-semiconductor Q1 connects
Ground.
Preferentially, the rectification circuit is bridge rectifier.
The technical solution of the utility model has advantages below：
1st, the device for under-voltage releasing equipment that this utility model is provided, drives the metal-oxide-semiconductor of trip circuit to lead using high-frequency pulse signal
Logical and shut-off, and then control the adhesive of the tripping coil L3 of trip circuit and disconnect, when high-frequency pulse signal is in low level,
Because the frequency of high-frequency pulse signal is sufficiently large, tripping coil L3 can be made to keep adhesive shape before the arrival of next high level
State, while pass through without electric current on tripping coil L3, so as to avoid tripping coil L3 in produce too high temperature, with existing skill
Art is compared, and the service life for not only increasing tripping coil L3 is, the power consumption for reducing tripping coil L3, and high-frequency driving
Signal reduces the time of voltage zero-cross on tripping coil L3, prevents the current sound on tripping coil L3 from by ear recognition, drop
The low operating noise of device for under-voltage releasing equipment.
2nd, the start-up circuit of the device for under-voltage releasing equipment that this utility model is provided can be opened using the pattern for starting at full speed in circuit
Full speed running when dynamic, it is ensured that coil fast and reliable adhesive, improves the sensitivity of device for under-voltage releasing equipment.
Description of the drawings
In order to be illustrated more clearly that this utility model specific embodiment or technical scheme of the prior art, below will be right
The accompanying drawing to be used needed for specific embodiment or description of the prior art is briefly described, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is a theory diagram of device for under-voltage releasing equipment in this utility model embodiment 1；
Fig. 2 is a circuit diagram of device for under-voltage releasing equipment in this utility model embodiment 1.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of this utility model, rather than the embodiment of whole.Based on the embodiment in this utility model, this
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " connected "
Should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can also be two elements
Internal connection, can be wireless connection, or wired connection.For the ordinary skill in the art, can be with
Concrete condition understands concrete meaning of the above-mentioned term in this utility model.
As long as additionally, technical characteristic involved in this utility model different embodiments disclosed below is each other
Not constituting conflict just can be combined with each other.
Embodiment 1
A kind of device for under-voltage releasing equipment is present embodiments provided, in can be used for chopper, as shown in figure 1, including：Rectification circuit 1
And power circuit 2, voltage comparator circuit 3 and the trip circuit 4 being connected with rectification circuit 1, power circuit 2 connect voltage ratio compared with
Circuit 3, for powering for voltage comparator circuit 3, also includes：Pulse generation circuit 5, start-up circuit 6 and drive circuit 7, arteries and veins
The one end of generative circuit 5 connection voltage comparator circuit 3 is rushed, for generating high-frequency pulse signal when input voltage is more than predetermined value,
The other end connection start-up circuit 6 of pulse generation circuit 5, for sending high-frequency pulse signal, start-up circuit 6 to start-up circuit 6
It is connected with drive circuit 7, starts for controlling drive circuit 7 when high-frequency pulse signal is received, the connection of drive circuit 7 is threaded off
Circuit 4, for driving trip circuit 4 to work.
Above-mentioned device for under-voltage releasing equipment, the adhesive and disconnection of the tripping coil of trip circuit 4 are controlled using high-frequency pulse signal, when
When high-frequency pulse signal is in low level, because the frequency of high-frequency pulse signal is sufficiently large, tripping coil can be kept in the next one
High level will not disconnect before arriving, and pass through without electric current on tripping coil, so as to avoid tripping coil in produced
High temperature, compared with prior art, the service life that not only increases tripping coil, the power consumption for reducing tripping coil, and
And high-frequency drive signal reduces the time of voltage zero-cross on tripping coil, the current sound on tripping coil is prevented from by people
Ear identification, reduces the operating noise of device for under-voltage releasing equipment.
The technical scheme of the present embodiment is described in detail with reference to Fig. 1 and Fig. 2：
As a kind of preferred version, as shown in Fig. 2 the rectification circuit 1 of the present embodiment is by diode D1, D2, D7 and D8
The bridge rectifier 1 of composition, alternating current through all wave rectification of rectification circuit 1, and after electric capacity C1 is filtered, Fen Sanlu
Connect trip circuit 4, power circuit 2 and voltage comparator circuit 3 respectively, specifically：
Used as a kind of preferred version, trip circuit 4 can include：Tripping coil L3, diode D5 and metal-oxide-semiconductor Q1, wherein,
Behind one end of the anode connection tripping coil L3 of diode D5, the drain electrode of metal-oxide-semiconductor Q1 is concatenated into, the negative electrode connection of diode D5 is de-
The other end of fastening wire circle L3, input AC electricity after filtering is connected on tripping coil L3, the source ground of metal-oxide-semiconductor Q1.
Used as a kind of preferred version, power circuit 2 can include：Power regulator U2, resistance R1, R8, R13 and R16,
Stabilivolt Z1, electric capacity C3, electrochemical capacitor C4, C5 and C7 and diode D9, wherein, one end connection rectification circuit 1 of resistance R1
(alternating current i.e. after filtering connects power circuit 2 by resistance R1), the other end connect one end of resistance R8, and resistance R8's is another
One end connects common port, the anode of electrochemical capacitor C4 and the electric capacity C3's of the negative electrode of stabilivolt Z1, stabilivolt Z1 and resistance R8
Common port after the connection of one end connects 2 feet of power regulator U2, the anode of stabilivolt Z1, the negative electrode of electrochemical capacitor C4 and electricity
Hold and be grounded after the other end of C3, the anode of electrochemical capacitor C5 connects 3 feet of power regulator U2, the negative electrode of electrochemical capacitor C5 connects
Ground；The voltage for being input into U2 is followed by the 2 of power regulator U2 through stabilivolt Z1 voltage stabilizings, electric capacity C3 and electrochemical capacitor C4 filtering
Foot, 3 feet of power regulator U2 export a galvanic current source VCC, and DC source VCC is filtered through electrochemical capacitor C5
Afterwards, galvanic current source is provided to the comparator U3A of subsequent conditioning circuit.
Used as a kind of preferred version, power circuit 2 is also included by electrochemical capacitor C7, resistance R13, R16 and diode D9
The chip periphery circuit of composition, wherein, 1 foot of the anode of electrochemical capacitor C7 and one end connection power regulator U2 of resistance R13,
The minus earth of electrochemical capacitor C7, the other end of resistance R13 connects 3 feet of power regulator U2, the negative electrode connection of diode D9
3 feet of power regulator U2, the anode of diode D9 connects one end of resistance R16, the other end ground connection of resistance R16.
Used as a kind of preferred version, voltage comparator circuit 3 includes：Resistance R3, R5, R7, R12, R15, R9, R10, electric capacity
C6, electrochemical capacitor C8, comparator U3A, diode D4 and Schmidt trigger U1A, wherein, resistance R5 one end connection rectified current
Road 1 (alternating current i.e. after filtering connects voltage comparator circuit 3 by resistance R5), the other end connect one end of resistance R12, electricity
The other end of resistance R12 connects one end of resistance R15, the common port of resistance R15 and resistance R12, one end of electric capacity C6 and electrolysis electricity
Hold 2 feet that the common port after the anode connection of C8 connects comparator U3A, the other end of resistance R15, the other end of electric capacity C6 and electricity
The negative electrode of solution electric capacity C8 is grounded respectively, and the input AC electricity after such rectifying and wave-filtering is through resistance R5, R12, R15 partial pressure, electric capacity
After C6 and electrochemical capacitor C8 filtering, 2 feet of input comparator U3A；One end of resistance R9 and R10 connects respectively the 3 of comparator U3A
Foot, the stable dc power supply VCC of the other end connection output of power circuit 2 of resistance R9, the other end ground connection of resistance R10, so
So that resistance R9 and R10 constitute benchmark divider resistance；The anode of diode D4 connects 3 feet of comparator U3A, the moon of diode D4
Pole connects one end of resistance R3, and the other end of resistance R3 connects 1 foot of Schmidt trigger U1A, and the connection of resistance R7 one end applies close
1 foot of special trigger U1A, the stable dc power supply VCC of the other end connection output of power circuit 2, so that comparator U3A structures
Into hysteresis comparator, to reduce interference；The foot of comparator U3A outfans 1 connects 1 foot of Schmidt trigger U1A, schmidt trigger
2 feet of device U1A connect respectively the negative electrode and electric capacity C2 of diode D3；
Used as a kind of preferred version, pulse generation circuit 5 includes：Schmidt trigger U1C, diode D6a, diode
D6b, resistance R11, resistance R6, electrochemical capacitor C9, diode D3 and resistance R2, wherein, the anode connection resistance of diode D6a
One end of R6, the negative electrode of diode D6b connects one end of resistance R11, the other end of resistance R6 and resistance R11, electrochemical capacitor C9
Anode and the anode of diode D3 connect 5 feet of Schmidt trigger U1C, the negative electrode of diode D6a, diode respectively
The anode of D6b and one end of resistance R2 connect respectively 6 feet of Schmidt trigger U1C, and the other end of resistance R2 connects respectively
Start-up circuit 6 and drive circuit 7, resistance R2 has metering function, the negative electrode connection voltage comparator circuit 3 of diode D3, electrolysis
The minus earth of electric capacity C9.
Used as a kind of preferred version, start-up circuit 6 includes：Electric capacity C2, resistance R17, diode D11, Schmidt trigger
U1B and diode D10, wherein, the anode of diode D11 connects one end of resistance R17, the negative electrode of diode D11, resistance
The other end of R17 and one end of electric capacity C2 connect respectively 3 feet of Schmidt trigger U1B, 4 feet of Schmidt trigger U1B
The negative electrode of connection diode D10, the anode of diode D10 connects respectively resistance R2 and drive circuit 7, and the other end of electric capacity C2 connects
Voltage comparator circuit 3 is connect, the start-up circuit 6, can the full speed running in circuit start using the pattern for starting at full speed, it is ensured that line
Circle fast and reliable adhesive, improves the sensitivity of device for under-voltage releasing equipment.
Used as a kind of preferred version, drive circuit 7 includes：Resistance R14, Schmidt trigger U1D, U1E and U1F, wherein,
Connect the sun of resistance R2 and diode D10 after the 13 feet parallel connection of 9 feet of Schmidt trigger U1D, 11 feet of U1E and U1F respectively
Pole, connects one end of resistance R14 after 8 feet of Schmidt trigger U1D, 10 feet of U1E, the 12 feet parallel connection of U1F, resistance R14's
The grid of metal-oxide-semiconductor Q1 in other end connection trip circuit 4.
Above-mentioned device for under-voltage releasing equipment, by by the 2 foot voltages of comparator U3A with 3 feet of comparator U3A reference voltage ratio
Compared with when the input voltage of alternating current is higher than the under-voltage protection predetermined value of device for under-voltage releasing equipment, the voltage of 3 feet of comparator U3A is low
In the 2 foot voltages of comparator U3A so that the 1 foot output low level of comparator U3A, this low level is through Schmidt trigger U1A
The 2 feet output high level of the i.e. Schmidt trigger U1A of high level is turned into afterwards, now, diode D3 cut-offs, the high level is to electricity
Hold C2 to charge, when electric capacity C2 charge volumes reach certain value, the 3 foot magnitudes of voltage of Schmidt trigger U1B reach the upset of U1B
Value, 4 feet for making U1B export low level, now diode D10 conductings, and then the input of drive circuit 7 is drawn as low level,
This low level is turned into high level through U1D, U1E and U1F, so that the metal-oxide-semiconductor Q1 conductings of trip circuit 4, realize opening at full speed
Dynamic function；Now, diode D10 anodes become low level, and electrochemical capacitor C9 can be discharged by resistance R6, diode D6a,
When electrochemical capacitor C9 discharges into certain value, the 5 foot magnitudes of voltage of Schmidt trigger U1C reach the inverse values of U1C, make the 6 of U1C
Foot exports high level, and this high level can be charged through resistance R11, diode D6b to electrochemical capacitor C9, so under circulation
Go, an oscillating circuit can be formed, you can form a high frequency arteries and veins with certain frequency and dutycycle in diode D10 anodes
Rush square wave (i.e. high-frequency pulse signal), in actual applications, by adjust resistance R6 and R11 and electrochemical capacitor C9 value, just
The frequency and dutycycle of high-frequency pulse square wave can be changed, the waveform of high-frequency pulse square wave carries out waveform and turns over through drive circuit 7
Turn, enhance the driving force of drive circuit 7, thus, the grid in metal-oxide-semiconductor Q1 is formed one and has certain dutycycle
High-frequency pulse square wave, for maintaining metal-oxide-semiconductor Q1 to turn on, after Q1 is turned on, tripping coil L3 adhesives therewith so that device for under-voltage releasing equipment
In normal operating conditions.Contrary, when the input voltage of alternating current is less than the under-voltage protection preset value of device for under-voltage releasing equipment, than
The voltage of 3 feet compared with device U3A is higher than its 2 foot voltage so that the 1 foot output high level of U3A, this high level is through schmitt trigger
Low level is turned into after U1A, now diode D3 conductings, 5 feet of U1C are forced to pull into low level, 6 feet for making U1C export high
Level, oscillating circuit stops concussion, and the charging of electric capacity C2 no longer meets the condition for making U1B produce level upset, now the sun of D10
Pole becomes constant high level, and the grid of metal-oxide-semiconductor Q1 is input into after U1D, U1E and U1F are turned into low level, makes metal-oxide-semiconductor Q1
Shut-off, tripping coil L3 also disconnects therewith, so as to the infringement for avoiding each circuit arrangement from bringing because alternating current is under-voltage.
The technical solution of the utility model, is driven the adhesive of tripping coil L3 and is disconnected using high-frequency pulse signal, it is to avoid
Too high temperature is produced in tripping coil L3, compared with prior art, service life, the drop of tripping coil L3 is not only increased
The low power consumption of tripping coil L3, and high-frequency drive signal reduces the time of voltage zero-cross on tripping coil L3, makes
Current sound on tripping coil L3 by ear recognition, can not reduce the operating noise of device for under-voltage releasing equipment, and start-up circuit 6 is using complete
The pattern that speed starts, improves the sensitivity of device for under-voltage releasing equipment.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or
Among changing the protection domain created still in this utility model.
Claims (8)
1. a kind of device for under-voltage releasing equipment, including：Rectification circuit and the power circuit being connected with the rectification circuit, voltage ratio are more electric
Road and trip circuit, it is characterised in that also include：Pulse generation circuit, start-up circuit and drive circuit, the pulse is generated
Circuit on one side connects the voltage comparator circuit, described for generating high-frequency pulse signal when input voltage is more than predetermined value
The other end of pulse generation circuit connects the start-up circuit, for sending the high-frequency pulse signal to the start-up circuit,
The start-up circuit is connected with the drive circuit, for controlling the drive circuit when the high-frequency pulse signal is received
Start, the drive circuit connects the trip circuit, for driving the trip circuit to work.
2. device for under-voltage releasing equipment according to claim 1, it is characterised in that the pulse generation circuit includes：Schmidt touches
Device U1C, diode D6a, diode D6b, resistance R11, resistance R6, electrochemical capacitor C9, diode D3 and resistance R2 are sent out, its
In,
The anode of the diode D6a connects one end of the resistance R6, and the negative electrode of the diode D6b connects the resistance
The other end of one end of R11, the resistance R6 and the resistance R11, the anode of the electrochemical capacitor C9 and the diode
The anode of D3 connects respectively 5 feet of the Schmidt trigger U1C, the negative electrode of the diode D6a, the diode D6b
One end of anode and the resistance R2 connects respectively 6 feet of the Schmidt trigger U1C, the other end point of the resistance R2
Do not connect the start-up circuit and the drive circuit, the negative electrode of the diode D3 connects the voltage comparator circuit, described
The minus earth of electrochemical capacitor C9.
3. device for under-voltage releasing equipment according to claim 2, it is characterised in that the start-up circuit includes：Electric capacity C2, resistance
R17, diode D11, Schmidt trigger U1B and diode D10, wherein,
The anode of the diode D11 connects one end of the resistance R17, the negative electrode of the diode D11, the resistance R17
The other end and one end of the electric capacity C2 connect 3 feet of the Schmidt trigger U1B, the Schmidt trigger respectively
4 feet of U1B connect the negative electrode of the diode D10, and the anode of the diode D10 connects respectively the resistance R2 and the drive
Galvanic electricity road, the other end of the electric capacity C2 connects the voltage comparator circuit.
4. device for under-voltage releasing equipment according to claim 3, it is characterised in that the drive circuit includes：Resistance R14, Shi Mi
Special trigger U1D, U1E and U1F, wherein,
Connect the resistance R2 and institute respectively after the 13 feet parallel connection of 9 feet of the Schmidt trigger U1D, 11 feet of U1E and U1F
The anode of diode D10 is stated, connection is described after 8 feet of the Schmidt trigger U1D, 10 feet of U1E, the 12 feet parallel connection of U1F
One end of resistance R14, the other end of the resistance R14 connects the grid of metal-oxide-semiconductor Q1 in the trip circuit.
5. the device for under-voltage releasing equipment according to claim 3 or 4, it is characterised in that the voltage comparator circuit includes：Resistance
R3, R5, R7, R12, R15, R9, R10, electric capacity C6, electrochemical capacitor C8, comparator U3A, diode D4 and Schmidt trigger
U1A, wherein,
Described resistance R5 one end connects one end that the rectification circuit, the other end connect the resistance R12, the resistance R12's
The other end connects one end of the resistance R15, the common port of the resistance R15 and resistance R12, one end of the electric capacity C6
With 2 feet that the common port after the connection of the anode of the electrochemical capacitor C8 connects the comparator U3A, the resistance R15's is another
The negative electrode of end, the other end of the electric capacity C6 and the electrochemical capacitor C8 is grounded respectively；
One end of the resistance R9 and R10 connects respectively 3 feet of the comparator U3A, the other end connection institute of the resistance R9
Power circuit is stated, the other end ground connection of the resistance R10, the foot of comparator U3A outfans 1 connects the Schmidt trigger
1 foot of U1A, 2 feet of the Schmidt trigger U1A connect respectively the negative electrode and the electric capacity C2 of the diode D3；
The anode of the diode D4 connects 3 feet of the comparator U3A, and the negative electrode of the diode D4 connects the resistance R3
One end, the other end of the resistance R3 connects 1 foot of the Schmidt trigger U1A, and resistance R7 one end connection is described
1 foot of Schmidt trigger U1A, the other end connect the power circuit.
6. device for under-voltage releasing equipment according to any one of claim 1 to 4, it is characterised in that the power circuit includes：Electricity
Source manostat U2, resistance R1 and R8, stabilivolt Z1, electric capacity C3 and electrochemical capacitor C4 and C5, wherein,
One end of the resistance R1 connects one end that the rectification circuit, the other end connect the resistance R8, the resistance R8's
The other end connects the negative electrode of the stabilivolt Z1；
One end of the common port, the anode of the electrochemical capacitor C4 and the electric capacity C3 of the stabilivolt Z1 and resistance R8
Common port after connection connects 2 feet of the power regulator U2, the anode of the stabilivolt Z1, the moon of the electrochemical capacitor C4
It is grounded after the other end of pole and the electric capacity C3, the anode of the electrochemical capacitor C5 connects 3 feet of the power regulator U2,
The minus earth of the electrochemical capacitor C5.
7. device for under-voltage releasing equipment according to claim 4, it is characterised in that the trip circuit includes：Tripping coil L3, two
Pole pipe D5 and the metal-oxide-semiconductor Q1, wherein,
The anode of the diode D5 connects behind one end of the tripping coil L3, is concatenated into the drain electrode of the metal-oxide-semiconductor Q1, described
The negative electrode of diode D5 connects after the other end connection of the tripping coil L3, is concatenated into the rectification circuit, the metal-oxide-semiconductor Q1
Source ground.
8. device for under-voltage releasing equipment according to claim 1, it is characterised in that the rectification circuit is bridge rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620998754.5U CN206135389U (en) | 2016-08-30 | 2016-08-30 | Under -voltage tripper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620998754.5U CN206135389U (en) | 2016-08-30 | 2016-08-30 | Under -voltage tripper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135389U true CN206135389U (en) | 2017-04-26 |
Family
ID=58565376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620998754.5U Active CN206135389U (en) | 2016-08-30 | 2016-08-30 | Under -voltage tripper |
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| Country | Link |
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| CN (1) | CN206135389U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112039028A (en) * | 2020-08-11 | 2020-12-04 | 北京卫星制造厂有限公司 | Remote control instruction and bus under-voltage protection circuit with strong anti-jamming capability |
| CN112542819A (en) * | 2020-12-01 | 2021-03-23 | 真兰电气(上海)有限公司 | Under-voltage protection circuit |
-
2016
- 2016-08-30 CN CN201620998754.5U patent/CN206135389U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112039028A (en) * | 2020-08-11 | 2020-12-04 | 北京卫星制造厂有限公司 | Remote control instruction and bus under-voltage protection circuit with strong anti-jamming capability |
| CN112542819A (en) * | 2020-12-01 | 2021-03-23 | 真兰电气(上海)有限公司 | Under-voltage protection circuit |
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