CN106159874B - Power-off protecting circuit - Google Patents
Power-off protecting circuit Download PDFInfo
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- CN106159874B CN106159874B CN201610537272.4A CN201610537272A CN106159874B CN 106159874 B CN106159874 B CN 106159874B CN 201610537272 A CN201610537272 A CN 201610537272A CN 106159874 B CN106159874 B CN 106159874B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
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Abstract
本发明公开了一种断电保护电路，所述断电保护电路包括：包括第一延时模块、第二延时模块、开关电路和负载块模块；所述第一延时模块的第一端与开关电路的第一端连接，所述开关电路的第二端与所述第二延时模块的第一端连接，所述开关电路的第三端与所述负载块模块的第一端连接，所述第二延时模块与所述负载块模块的第二端连接。本发明的技术方案当断电后通电时，通过开关电路进行打开或者闭合，使第一延时模块、第二延时模块和负载块模块共同作用，延长对负载的通电时间，也就是说待电路中的电流较为稳定后，再对负载进行通电，从而保护负载不至因电流过大而受到损坏。
The invention discloses a power-off protection circuit. The power-off protection circuit comprises: a first delay module, a second delay module, a switch circuit and a load block module; a first end of the first delay module connected to the first end of the switch circuit, the second end of the switch circuit is connected to the first end of the second delay module, and the third end of the switch circuit is connected to the first end of the load block module , the second delay module is connected with the second end of the load block module. The technical solution of the present invention is that when the power is turned on after power off, the switch circuit is used to open or close, so that the first delay module, the second delay module and the load block module work together to prolong the power-on time of the load, that is, to wait After the current in the circuit is relatively stable, the load is energized, so as to protect the load from being damaged due to excessive current.
Description
Technical field
The present invention relates to electric switch technical field, in particular to a kind of power-off protecting circuit.
Background technique
It is well known that the use of various electrical equipments all be unable to do without power supply.But grid cut-off is met with suddenly, then again extensive
When powering again, the immediate current peak value of energization is very big, and electrical equipment just will receive certain rush of current, and make internal component
Aging influences the service life, or even directly burns out component；Particularly with the household electrical appliance such as refrigerator, television set and computer harm more
Greatly, so that the property to people causes extreme loss.
Summary of the invention
In view of this, can be the disconnected of household electrical appliance delay power transmission after grid cut-off the object of the present invention is to provide one kind
Electric protection circuit.
To achieve the goals above, the present invention provides a kind of power-off protecting circuit, including the first time delay module, second prolong
When module, switching circuit and load block module；
The first end of first time delay module and the first end of switching circuit connect, the second end of the switching circuit with
The first end of second time delay module connects, and the first end of the third end of the switching circuit and the load block module connects
It connects, second time delay module is connect with the second end of the load block module；
Wherein, load and electricity are made to the time-lag action of load block module by the first time delay module and the second time delay module
Source Delayed conducting.
Preferably, first time delay module includes the first power supply, first capacitor, the first voltage-stabiliser tube, the second capacitor, the
One resistance, third capacitor, the first triode, the second triode and second resistance；
The first end of first power supply connects the anode of the first capacitor, and the second end of first power supply is grounded,
The second end of first power supply is also connected with the cathode of second capacitor, and the anode connection described first of the first capacitor is steady
The first end of pressure pipe, the cathode of the first capacitor connect the second end of first voltage-stabiliser tube, and the of first voltage-stabiliser tube
Three ends connect the anode of second capacitor, and the second end of first voltage-stabiliser tube connects the cathode of second capacitor, described
The anode of second capacitor connects the first end of the first resistor, and the cathode of second capacitor connects the negative of the third capacitor
Pole, the anode of the third capacitor connect the second end of the first resistor, the second end connection of the first resistor described the
The base stage of one triode, the collector of first triode connect the base stage of second triode, a triode
Emitter connects the cathode of the third capacitor, and the collector of two triode connects the first end of the second resistance, institute
The emitter for stating the second triode connects the first end of the first resistor, the second end connection described first of the second resistance
The emitter of triode；Wherein, the emitter of second triode is configured to the first end of first time delay module.
Preferably, first triode is NPN type triode, second triode is PNP type triode.
Preferably, first time delay module includes second source, the 4th capacitor, the 5th capacitor, the second voltage-stabiliser tube,
Six capacitors, the 7th capacitor, 3rd resistor, the 8th capacitor, third transistor, the 4th triode and the 5th triode and first are opened
It closes；
The first end of the second source connects the anode of the 4th capacitor, and the second end of the second source is grounded,
The second end of the second source is also connected with the cathode of the 6th capacitor, the anode connection of the 4th capacitor the 5th electricity
The first end of appearance, the cathode of the 4th capacitor connect the second end of the 5th capacitor, and the first end of the 5th capacitor connects
The first end of second voltage-stabiliser tube is connect, the second end of the 5th capacitor connects the second end of second voltage-stabiliser tube, described
The third end of second voltage-stabiliser tube connects the anode of the 6th capacitor, the second end connection of second voltage-stabiliser tube the 6th electricity
The cathode of appearance, the anode of the 6th capacitor connect the first end of the 7th capacitor, and the cathode of the 6th capacitor connects institute
The second end of the 7th capacitor is stated, the first end of the 7th capacitor connects the first end of the 3rd resistor, the 7th capacitor
Second end connect the cathode of the 8th capacitor, the anode of the 8th capacitor connects the second end of the 3rd resistor, institute
The second end for stating 3rd resistor connects the base stage of the third transistor, and the collector of the third transistor connects the four or three pole
The base stage of pipe, the emitter of the third transistor connect the cathode of the 8th capacitor, the collector of the 4th triode
The emitter of the third transistor is connected, the emitter of the 4th triode connects the base stage of the 5th triode, institute
The collector for stating the 5th triode connects the first end of the first switch, the emitter connection of the 5th triode described the
The first end of three resistance, the second end of the first switch connect the collector of the 4th triode；Wherein, the described 5th 3
The emitter of pole pipe is configured to the first end of first time delay module；
Wherein, the first switch is normally closed switch, and the 3rd resistor is variable resistance.
Preferably, first triode is NPN type triode, second triode and third transistor are
PNP type triode.
Preferably, second time delay module includes third power supply, the 9th capacitor, the tenth capacitor, third voltage-stabiliser tube,
11 capacitors and the 12nd capacitor；
The first end of the third power supply connects the anode of the 9th capacitor, and the second end of the third power supply connects institute
The cathode of the 9th capacitor is stated, the anode of the 9th capacitor connects the first end of the tenth capacitor, and the 9th capacitor is born
Pole connects the second end of the tenth capacitor, and the first end of the tenth capacitor connects the first end of the third voltage-stabiliser tube, institute
The second end for stating the tenth capacitor connects the second end of the third voltage-stabiliser tube, the third end connection of the third voltage-stabiliser tube described the
The anode of 11 capacitors, the second end of the third voltage-stabiliser tube connect the cathode of the 11st capacitor, the 11st capacitor
Anode connect the first end of the 12nd capacitor, the second end of the 12nd capacitor described in the 11st capacitance connection；Its
In, the first end of the 12nd capacitor is configured to the first end of second time delay module.
Preferably, the switching circuit includes second switch, third switch, the 4th switch and the 4th resistance；
The first end of the second switch connects the first end of first time delay module, described in the second switch connection
The first end of the first end of 4th resistance, the third switch connects the first end of first time delay module, and the third is opened
The second end of pass connects the first end of the 4th resistance, and the first end of the 4th switch connects the first of the 4th resistance
The second end at end, the 4th switch connects the first end of second time delay module.
Preferably, the third end of the load block module is grounded, the first hair of the 4th end connection of the load block module
Optical diode, the second end of first light emitting diode connect the first end of the 5th resistance, the second end of the 5th resistance
Ground connection.
Preferably, the second end of the load block module is also connected with load, the 5th end connection of the load block module
4th power supply.
Preferably, the first end of first end the second light emitting diode of connection of first time delay module, described second
The second end of light emitting diode connects one end of the 6th resistance, and the second end of the 6th resistance connects first time delay module
Second end；
First time delay module is also connected with the 4th power supply；
4th power configuration are as follows: be the AC power source of load supplying.
Compared with prior art, the invention has the following advantages: when technical solution of the present invention is powered after power-off,
It is opened or is closed by switching circuit, make the first time delay module, the second time delay module and load block module collective effect,
Extend the conduction time to load, that is to say, that be powered after the electric current in circuit is relatively stable, then to load, to protect
Shield load is unlikely to be damaged because electric current is excessive.
Detailed description of the invention
Fig. 1 is the schematic diagram of one of embodiment of power-off protecting circuit of the invention；
Fig. 2 is the schematic diagram of the first time delay module of one of embodiment of power-off protecting circuit of the invention；
Fig. 3 is the schematic diagram of the first time delay module of one of embodiment of power-off protecting circuit of the invention；
Fig. 4 is the schematic diagram of the second time delay module of one of embodiment of power-off protecting circuit of the invention；
Fig. 5 is the schematic diagram of one of embodiment of power-off protecting circuit of the invention；
Fig. 6 is the schematic diagram of one of embodiment of power-off protecting circuit of the invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Fig. 1 is the schematic diagram of one of embodiment of power-off protecting circuit of the invention, as shown in Figure 1, the present embodiment
Power-off protecting circuit, can specifically include the first time delay module 10, the second time delay module 20, switching circuit 30 and load block mould
Block 40；
The first end of first time delay module 10 is connect with the first end of switching circuit 30, and the of the switching circuit 30
Two ends are connect with the first end of second time delay module 20, the third end of the switching circuit 30 and the load block module 40
First end connection, second time delay module 20 connect with the second end of the load block module 40；
Wherein, the time-lag action of load block module 40 is made to bear by the first time delay module 10 and the second time delay module 20
It carries and power supply Delayed conducting.
Specifically, the moment of power supply is reclosed after electrical equipment powers off, transient current is very big, it is easy to by electricity consumption
Equipment damage.After accessing the power-off protecting circuit of the present embodiment in circuit, under normal conditions, the first time delay module, the
Two time delay modules, switching circuit can't work, and power supply is connected by load block module and load, be load supplying；When disconnected
When electricity powers on again, the first time delay module, the second time delay module and switching circuit are started working, and switching circuit is connected
Or disconnect, so that the first time delay module and the second time delay module control load block module, load is made to be delayed with power supply
Conducting.
It when the technical solution of the present embodiment is powered after power-off, is opened or is closed by switching circuit, make first
40 collective effect of time delay module 10, the second time delay module 20 and load block module extends the conduction time to load, that is to say, that
It is powered after the electric current in circuit is relatively stable, then to load, to protect load is unlikely to be damaged because electric current is excessive
It is bad.
Fig. 2 is the schematic diagram of the first time delay module of one of embodiment 10 of power-off protecting circuit of the invention, this reality
The power-off protecting circuit of example is applied on the basis of embodiment as shown in Figure 1, further introduces skill of the invention in further detail
Art scheme.As shown in Fig. 2, the first time delay module 10 involved in the power-off protecting circuit of the present embodiment, can specifically include institute
Stating the first time delay module 10 includes the first power supply V1, first capacitor C1, the first voltage-stabiliser tube ZD1, the second capacitor C2, first resistor R1、
Third capacitor C3, the first triode Q1, the second triode Q2With second resistance R2；
The first power supply V1First end connect the first capacitor C1Anode, the first power supply V1Second end
Ground connection, the first power supply V1Second end connect the second capacitor C2Cathode, the first capacitor C1Anode connection institute
State the first voltage-stabiliser tube ZD1First end, the first capacitor C1Cathode connect the first voltage-stabiliser tube ZD1Second end, it is described
First voltage-stabiliser tube ZD1Third end connect the second capacitor C2Anode, the first voltage-stabiliser tube ZD1Second end connect institute
State the second capacitor C2Cathode, the second capacitor C2Anode connect the first resistor R1First end, second capacitor
C2Cathode connect the third capacitor C3Cathode, the third capacitor C3Anode connect the first resistor R1Second
End, the first resistor R1Second end connect the first triode Q1Base stage, the first triode Q1Collector connect
Meet the second triode Q2Base stage, the triode Q1Emitter connect the third capacitor C3Cathode, described two
Triode Q2Collector connect the second resistance R2First end, the second triode Q2Emitter connection described the
One resistance R1First end, the second resistance R2Second end connect the first triode Q1Emitter；Wherein, described
Second triode Q2Emitter be configured to the first end of first time delay module 10.
Further, the first triode Q1For NPN type triode, the second triode Q2For PNP type triode.
Fig. 3 is the schematic diagram of the first time delay module of one of embodiment 10 of power-off protecting circuit of the invention, this reality
The power-off protecting circuit of example is applied on the basis of embodiment as shown in Figure 1, further introduces skill of the invention in further detail
Art scheme.As shown in figure 3, the first time delay module 10 involved in the power-off protecting circuit of the present embodiment, can specifically include
Two power supply V2, the 4th capacitor C4, the 5th capacitor C5, the second voltage-stabiliser tube ZD2, the 6th capacitor C6, the 7th capacitor C7, 3rd resistor R3、
8th capacitor C8, third transistor Q3, the 4th triode Q4With the 5th triode Q5With first switch K1；
The second source V2First end connect the 4th capacitor C4Anode, the second source V2Second end
Ground connection, the second source V2Second end be also connected with the 6th capacitor C6Cathode, the 4th capacitor C4Anode connection
The 5th capacitor C5First end, the 4th capacitor C4Cathode connect the 5th capacitor C5Second end, the described 5th
Capacitor C5First end connect the second voltage-stabiliser tube ZD2First end, the 5th capacitor C5Second end connection described second
Voltage-stabiliser tube ZD2Second end, the second voltage-stabiliser tube ZD2Third end connect the 6th capacitor C6Anode, described second is steady
Pressure pipe ZD2Second end connect the 6th capacitor C6Cathode, the 6th capacitor C6Anode connect the 7th capacitor C7
First end, the 6th capacitor C6Cathode connect the 7th capacitor C7Second end, the 7th capacitor C7First end
Connect the 3rd resistor R3First end, the 7th capacitor C7Second end connect the 8th capacitor C8Cathode, it is described
8th capacitor C8Anode connect the 3rd resistor R3Second end, the 3rd resistor R3Second end connect the third
Triode Q3Base stage, the third transistor Q3Collector connect the 4th triode Q4Base stage, the third transistor Q3
Emitter connect the 8th capacitor C8Cathode, the 4th triode Q4Collector connect the third transistor Q3
Emitter, the 4th triode Q4Emitter connect the 5th triode Q5Base stage, the 5th triode Q5's
Collector connects the first switch K1First end, the 5th triode Q5Emitter connect the 3rd resistor R3's
First end, the first switch K1Second end connect the 4th triode Q4Collector；Wherein, the 5th triode
Q5Emitter be configured to the first end of first time delay module 10；
Wherein, the first switch K1For normally closed switch, the 3rd resistor R3For variable resistance.
Further, first triode is NPN type triode, and second triode and third transistor are
PNP type triode.
In the alternative solution of the present embodiment, first switch K1It can be replaced by a resistance, preferably variable resistance.Also
To say, switch disconnect when, be equivalent to variable resistance and be adjusted to larger resistance value, when closing the switch, be equivalent to variable resistance be adjusted to compared with
Small resistance value；Moreover, having no effect on the implementation result of the present embodiment it was verified that first switch is replaced with variable resistance.
Fig. 4 is the schematic diagram of the second time delay module of one of embodiment 20 of power-off protecting circuit of the invention, this reality
The power-off protecting circuit of example is applied on the basis of embodiment as shown in Figure 2 or Figure 3, further introduces the present invention in further detail
Technical solution.As shown in figure 4, the second time delay module 20 involved in the power-off protecting circuit of the present embodiment, specifically can wrap
Include third power supply V3, the 9th capacitor C9, the tenth capacitor C10, third voltage-stabiliser tube ZD3, the 11st capacitor C11With the 12nd capacitor C12；
The third power supply V3First end connect the 9th capacitor C9Anode, the third power supply V3Second end
Connect the 9th capacitor C9Cathode, the 9th capacitor C9Anode connect the tenth capacitor C10First end, it is described
9th capacitor C9Cathode connect the tenth capacitor C10Second end, the tenth capacitor C10First end connect the third
Voltage-stabiliser tube ZD3First end, the tenth capacitor C10Second end connect the third voltage-stabiliser tube ZD3Second end, described
Three voltage-stabiliser tube ZD3Third end connect the 11st capacitor C11Anode, the third voltage-stabiliser tube ZD3Second end connect institute
State the 11st capacitor C11Cathode, the 11st capacitor C11Anode connect the 12nd capacitor C12First end, it is described
11st capacitor C11Connect the 12nd capacitor C12Second end；Wherein, the 12nd capacitor C12First end be configured to
The first end of second time delay module 20.
In the specific implementation, third power supply V3For 6V power supply, the C of the 9th capacitor9Value is 100 μ F, the tenth capacitor C10Value
For 104 μ F, the C of the 11st capacitor9Value is 100 μ F, the C of the 12nd capacitor9Value is 104 μ F.
Voltage-stabiliser tube involved in above embodiments is three-terminal voltage-stabilizing pipe, and model 7806.
Below by taking Fig. 2 and embodiment shown in Fig. 4 as an example, the power supply in conjunction with involved in this implementation and external load RLCome
The application method of the present embodiment is introduced.
For the connection relationship for more clearly introducing each intermodule of the present invention, first using circuit shown in Fig. 2 as a frame
Figure, using circuit shown in Fig. 4 as a block diagram, to introduce the first time delay module and the second time delay module and other modules, electricity
Road, external power supply and load RLBetween connection relationship.
As shown in figure 5, the switching circuit 30 includes second switch K2, third switch K3, the 4th switch K4With the 4th resistance
R4；
The second switch K2First end connect the first end of first time delay module 10, the second switch K2Even
Meet the 4th resistance R4First end, the third switch K3First end connect the first end of first time delay module 10,
The third switch K3Second end connect the 4th resistance R4First end, the 4th switch K4First end connect institute
State the 4th resistance R4First end, the 4th switch K4Second end connect the first end of second time delay module 20.
The effect of switching circuit is introduced by taking the first time delay module shown in Fig. 2 as an example below.The present embodiment is re-energised
Automatic time delay operation can be achieved afterwards, can also realize that manual delay operation, automatic time delay operation and manual delay operation depend on
Third switch K3State.Specifically, third switch K3For push-button switch, second switch K2With the 4th switch K4It is double for hilted broadsword
Throw switch, and be normal open switch.The present embodiment can carry out delay operation automatically when power-off is re-energised, that is to say, that make
Third switch K3State in closure, when being re-energised, third switch K3It disconnects, third holds C3Discharge, cross the several seconds or
Several minutes of rear third capacitor C3It has discharged and has closed, load is powered；The present embodiment can also when power-off is re-energised manually into
Line delay operation, that is to say, that make third switch K3State in disconnection, when needing to carry out delay operation, user is manual
By second switch K2Closure, R to be loadedLIt is able to after power supply again manually by second switch K2It disconnects.
Worth explanation mentions, and can adjust the time of delay by adjusting the resistance value in load block module 40, that is to say, that
In load block module 40, the resistance value between the first end of connection switch circuit 30 and the second end of connection load is born come what is determined
The resistance value of the first end and second end that carry block module is bigger, and delay time is longer.
Continuing with Fig. 5, the third end of the load block module 40 is grounded, the 4th end connection of the load block module 40
First light emitting diode D1, the first light emitting diode D1Second end connect the 5th resistance R5First end, it is described 5th electricity
Hinder R5Second end ground connection.
Continuing with Fig. 5, the second end of the load block module 40 is also connected with load RL, the of the load block module 40
Five ends connect the 4th power supply (not shown).
Specifically, the 4th power supply is general supply, as load RLThe 220V AC power source of power supply.
In addition, those skilled in the art should it is recognised that the effect of the first light emitting diode and the 5th resistance be in order to
Whether instruction load powers on,
Continuing with Fig. 5, the first end of first time delay module 10 connects the second light emitting diode D2First end, institute
State the second light emitting diode D2Second end connect the 6th resistance R6One end, the 6th resistance R6Second end connection described in
The second end of first time delay module 10；
First time delay module 10 is also connected with the 4th power supply；
4th power configuration are as follows: be the AC power source of load supplying.
Specifically, those skilled in the art should be it is recognised that the second light emitting diode D2With the 6th resistance R6Effect be
Whether power on for indicating circuit, when disconnecting power supply, the second light emitting diode D2It is bright, when energized, second
Light emitting diode D2It goes out, naturally it is also possible to do opposite instruction.
Light emitting diode is set in circuit, convenient for when circuit breaks down, it is easy to abort situation is judged, to improve
The work efficiency rate of operator.
In addition in other embodiments of the invention, first time delay module 10 can not also directly connect with switching circuit
It connects, and passes through the 7th resistance R7It is connect with the switching circuit 30；Meanwhile second time delay module and the 5th resistance R5Second end
Connection.To introduce the present invention in more detail, the present embodiment prolongs the first time delay module and second in Fig. 2 and circuit shown in Fig. 4
When module be unfolded, as shown in Figure 6.
Element involved in above embodiments is all common component, that is to say, that the present embodiment is easily achieved.For negative
The parameter for carrying block module can choose pressure-resistant 800V or more, operating current 10~30A, it is preferable that selection has overcurrent-overvoltage
The load block module of function, can further increase the function of the power-off protector of the present embodiment.Three poles involved in this implementation
Pipe, by thyristor groups at, therefore when select thyristor, the thyristor that selection can turn off, so that the power-off protection of the present embodiment
Device more simplifies.
It when the technical solution of the present embodiment is powered after power-off, is opened or is closed by switching circuit 30, make
40 collective effect of one time delay module 10, the second time delay module 20 and load block module extends to load RLPower-on time again,
That is after the electric current in circuit is relatively stable, then to load RLIt is powered, to protect load RLIt is unlikely because of electric current mistake
It is damaged greatly.
Above embodiments are only exemplary embodiment of the present invention, are not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can within the spirit and scope of the present invention make respectively the present invention
Kind modification or equivalent replacement, this modification or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (8)
1. a kind of power-off protecting circuit, which is characterized in that including the first time delay module, the second time delay module, switching circuit and bear
Carry block module；
The first end of first time delay module and the first end of switching circuit connect, the second end of the switching circuit with it is described
The first end of second time delay module connects, and the third end of the switching circuit is connect with the first end of the load block module, institute
The third end for stating the second time delay module is connect with the second end of the load block module；
Wherein, prolong load with power supply the time-lag action of load block module by the first time delay module and the second time delay module
When be connected；
Second time delay module includes third power supply, the 9th capacitor, the tenth capacitor, third voltage-stabiliser tube, the 11st capacitor and
12 capacitors；
The first end of the third power supply connects the anode of the 9th capacitor, the second end connection of the third power supply described the
The cathode of nine capacitors, the anode of the 9th capacitor connect the first end of the tenth capacitor, and the cathode of the 9th capacitor connects
Connecing the second end of the tenth capacitor, the first end of the tenth capacitor connects the first end of the third voltage-stabiliser tube, and described
The second end of ten capacitors connects the second end of the third voltage-stabiliser tube, the third end connection the described 11st of the third voltage-stabiliser tube
The anode of capacitor, the second end of the third voltage-stabiliser tube connect the cathode of the 11st capacitor, and the 11st capacitor is just
Pole connects the first end of the 12nd capacitor, and the cathode of the 11st capacitor connects the second end of the 12nd capacitor；
Wherein, the first end of the 12nd capacitor is configured to the first end of second time delay module；
The switching circuit includes second switch, third switch, the 4th switch and the 4th resistance；
The first end of the second switch connects the first end of first time delay module, the second end connection of the second switch
The first end of 4th resistance, the first end of third switch connect the first end of first time delay module, and described the
The second end of three switches connects the first end of the 4th resistance, and the first end of the 4th switch connects the 4th resistance
The second end of first end, the 4th switch connects the first end of second time delay module.
2. power-off protecting circuit according to claim 1, which is characterized in that first time delay module includes the first electricity
Source, first capacitor, the first voltage-stabiliser tube, the second capacitor, first resistor, third capacitor, the first triode, the second triode and second
Resistance；
The first end of first power supply connects the anode of the first capacitor, and the second end ground connection of first power supply is described
The second end of first power supply is also connected with the cathode of second capacitor, and the anode of the first capacitor connects first voltage-stabiliser tube
First end, the cathode of the first capacitor connects the second end of first voltage-stabiliser tube, the third end of first voltage-stabiliser tube
Connecting the anode of second capacitor, the second end of first voltage-stabiliser tube connects the cathode of second capacitor, and described second
The anode of capacitor connects the first end of the first resistor, and the cathode of second capacitor connects the cathode of the third capacitor,
The anode of the third capacitor connects the second end of the first resistor, the second end connection the described 1st of the first resistor
The base stage of pole pipe, the collector of first triode connect the base stage of second triode, the hair of first triode
Emitter-base bandgap grading connects the cathode of the third capacitor, and the collector of second triode connects the first end of the second resistance, institute
The emitter for stating the second triode connects the first end of the first resistor, the second end connection described first of the second resistance
The emitter of triode；Wherein, the emitter of second triode is configured to the first end of first time delay module.
3. power-off protecting circuit according to claim 2, which is characterized in that first triode is NPN type triode,
Second triode is PNP type triode.
4. power-off protecting circuit according to claim 1, which is characterized in that first time delay module includes the second electricity
Source, the 4th capacitor, the 5th capacitor, the second voltage-stabiliser tube, the 6th capacitor, the 7th capacitor, 3rd resistor, the 8th capacitor, the three or three pole
Pipe, the 4th triode and the 5th triode and first switch；
The first end of the second source connects the anode of the 4th capacitor, and the second end ground connection of the second source is described
The second end of second source is also connected with the cathode of the 6th capacitor, and the anode of the 4th capacitor connects the 5th capacitor
First end, the cathode of the 4th capacitor connect the second end of the 5th capacitor, and the first end of the 5th capacitor connects institute
State the first end of the second voltage-stabiliser tube, the second end of the 5th capacitor connects the second end of second voltage-stabiliser tube, and described second
The third end of voltage-stabiliser tube connects the anode of the 6th capacitor, and the second end of second voltage-stabiliser tube connects the 6th capacitor
Cathode, the anode of the 6th capacitor connect the first end of the 7th capacitor, the cathode connection of the 6th capacitor described the
The second end of seven capacitors, the first end of the 7th capacitor connect the first end of the 3rd resistor, and the of the 7th capacitor
Two ends connect the cathode of the 8th capacitor, and the anode of the 8th capacitor connects the second end of the 3rd resistor, and described
The second end of three resistance connects the base stage of the third transistor, and the collector of the third transistor connects the 4th triode
Base stage, the emitter of the third transistor connect the cathode of the 8th capacitor, the collector connection of the 4th triode
The emitter of the third transistor, the emitter of the 4th triode connect the base stage of the 5th triode, and described
The collector of five triodes connects the first end of the first switch, and the emitter of the 5th triode connects the third electricity
The first end of resistance, the second end of the first switch connect the collector of the 4th triode；Wherein, the 5th triode
Emitter be configured to the first end of first time delay module；
Wherein, the first switch is normally closed switch, and the 3rd resistor is variable resistance.
5. power-off protecting circuit according to claim 4, which is characterized in that the third transistor is PNP type triode.
6. power-off protecting circuit according to claim 1, which is characterized in that the third end of the load block module is grounded,
4th end of the load block module connects the first end of the first light emitting diode, and the second end of first light emitting diode connects
Connect the first end of the 5th resistance, the second end ground connection of the 5th resistance.
7. power-off protecting circuit according to claim 1, which is characterized in that the second end of the load block module is also connected with
5th end of load, the load block module connects the 4th power supply.
8. power-off protecting circuit according to claim 1, which is characterized in that the third end of first time delay module connects
The first end of second light emitting diode, one end of second end the 6th resistance of connection of second light emitting diode, the described 6th
The second end of resistance connects the second end of first time delay module；
First time delay module is also connected with the 4th power supply；
4th power configuration are as follows: be the AC power source of load supplying.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610537272.4A CN106159874B (en) | 2016-07-08 | 2016-07-08 | Power-off protecting circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610537272.4A CN106159874B (en) | 2016-07-08 | 2016-07-08 | Power-off protecting circuit |
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| CN106159874A CN106159874A (en) | 2016-11-23 |
| CN106159874B true CN106159874B (en) | 2019-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610537272.4A Active CN106159874B (en) | 2016-07-08 | 2016-07-08 | Power-off protecting circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114268075B (en) * | 2022-03-03 | 2022-06-21 | 万灵帮桥医疗器械(广州)有限责任公司 | Anti-ignition circuit and power supply |
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|---|---|---|---|---|
| CN102711306A (en) * | 2012-06-14 | 2012-10-03 | 矽力杰半导体技术(杭州)有限公司 | Impact current eliminating circuit |
| CN202678221U (en) * | 2012-06-07 | 2013-01-16 | 刘鸿睿 | Automobile power supply delayer |
| CN103795244A (en) * | 2014-01-22 | 2014-05-14 | 刘胜泉 | A voltage stabilizing circuit for electronic time delay switch |
| CN204794024U (en) * | 2015-06-30 | 2015-11-18 | 宁波港吉码头经营有限公司 | Time -delayed separation protection circuit |
| CN205882668U (en) * | 2016-07-08 | 2017-01-11 | 国网冀北电力有限公司秦皇岛供电公司 | power failure protection circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761110B (en) * | 2011-04-26 | 2015-04-08 | 温州泓呈祥科技有限公司 | Power supply delay circuit |
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2016
- 2016-07-08 CN CN201610537272.4A patent/CN106159874B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202678221U (en) * | 2012-06-07 | 2013-01-16 | 刘鸿睿 | Automobile power supply delayer |
| CN102711306A (en) * | 2012-06-14 | 2012-10-03 | 矽力杰半导体技术(杭州)有限公司 | Impact current eliminating circuit |
| CN103795244A (en) * | 2014-01-22 | 2014-05-14 | 刘胜泉 | A voltage stabilizing circuit for electronic time delay switch |
| CN204794024U (en) * | 2015-06-30 | 2015-11-18 | 宁波港吉码头经营有限公司 | Time -delayed separation protection circuit |
| CN205882668U (en) * | 2016-07-08 | 2017-01-11 | 国网冀北电力有限公司秦皇岛供电公司 | power failure protection circuit |
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| CN106159874A (en) | 2016-11-23 |
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