CN203951452U - A kind of standby automatic switching-off device of electric - Google Patents
A kind of standby automatic switching-off device of electric Download PDFInfo
- Publication number
- CN203951452U CN203951452U CN201420264031.3U CN201420264031U CN203951452U CN 203951452 U CN203951452 U CN 203951452U CN 201420264031 U CN201420264031 U CN 201420264031U CN 203951452 U CN203951452 U CN 203951452U
- Authority
- CN
- China
- Prior art keywords
- switch
- output
- power
- resistance
- electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The disclosed standby automatic switching-off device of electric of the utility model, comprise the parts such as switch, button, switch control mnemon, D.C. regulated power supply, holding state judgement unit, when detecting after AC load standby a period of time, can disconnect by automatic control switch, cut off all power; In the time that switch disconnects, press the button and can make switch connection; In the time that switch is closed, press the button, can make switch disconnect.Described switch automatically cuts off the occasion of long-term work at electrical equipment or the equipment of holding state for needing, and can be arranged in socket, also can be connected to power consumption equipment before.
Description
Technical field
The utility model relates to a kind of switching technique, especially a kind of standby automatic switching-off device of electric.
Background technology
There is standby energy consumption in electric equipment, also because power supply does not turn-off the unsafe problems of bringing " standby " electric equipment completely during standby.
International energy is deployed in the energy-conservation proposal that the electric equipment products production and selling business to its member state initiates " 1W plan " in 2000, China has also put into effect the energy-conservation certification of relevant standby energy consumption, but a lot of electric equipment still fails to accomplish zero-power or even 1W power-consumption standby.
Summary of the invention
The purpose of this utility model is to provide a kind of without microprocessor controls, when power consumption equipment is operated in holding state, can auto-breaking, and switching device that can the manual power-off of manual type when power consumption equipment is normally worked.
A kind of standby automatic switching-off device of electric, is made up of switch control mnemon, the closed driver element of switch, switch power supply unit, button power supply unit, dual path isolation power subsystem, power supply electrifying detecting unit, trigger impulse shaping unit, holding state judgement unit.
Described switch control mnemon has asynchronous set input, asynchronous reset inputs, edging trigger pulse input end, switch controlling signal output.
The closed driver element of described switch is made up of relay coil and drive circuit; The input of drive circuit is connected to the switch controlling signal output of switch control mnemon, and the output of drive circuit is connected to relay coil.
Described switch power supply unit, by switch, the first DC power voltage stabilizing the electric circuit constitute, has ac power input end, ac power output, the first DC power output end; The first terminal, second terminal of switch are connected to respectively ac power input end, ac power output; The input of the first DC power voltage stabilizing circuit is connected to the second terminal of switch; The first DC power voltage stabilizing circuit is output as the first DC power output end; Described switch is the normal open switch of relay.
Described button power supply unit, by button, the second DC power voltage stabilizing the electric circuit constitute, has ac power input end, the second DC power output end; The first terminal of button is connected to ac power input end; The input of the second DC power voltage stabilizing circuit is connected to the second terminal of button; The second DC power voltage stabilizing circuit is output as the second DC power output end.
Described dual path isolation power subsystem is made up of diode dual path isolation power supply circuits, has the first DC supply input, the second DC supply input and DC supply output; The first DC supply input is connected to the first DC power output end of switch power supply unit; The second DC supply input is connected to the second DC power output end of button power supply unit; DC supply output output DC supply.
The input of described power supply electrifying detecting unit is connected to DC supply, and output is connected to the asynchronous set input of switch control mnemon.
Described trigger impulse shaping unit input is connected to the second DC power supply, and output is connected to the edging trigger pulse input end of switch control mnemon.
Described holding state judgement unit is made up of electric current see-saw circuit, standby threshold given value of current circuit, standby current comparison circuit; Two comparison signal inputs of standby current comparison circuit are connected to respectively electric current see-saw circuit output, standby threshold given value of current circuit output end; Standby current comparison circuit output is connected to the asynchronous reset inputs of switch control mnemon.
Described switch control mnemon is d type flip flop 74HC74.
The closed driver element of described switch is made up of relay coil, the first diode, the first resistance, triode; The two ends of the first resistance are connected to respectively the switch controlling signal output of switch control mnemon and the base stage of triode; Relay coil is the collector load of triode; The first diode reverse is connected in parallel on the two ends of relay coil.
Described switch power supply unit is made up of switch, the first electric capacity, the first voltage-stabiliser tube, the second resistance; The first terminal of switch is connected to alternating current phase line, and the second terminal is ac power output; The first electric capacity, the second resistance, the first voltage-stabiliser tube composition capacitance decompression half-wave rectifying circuit; The first electric capacity is in parallel with the second resistance, then is connected to ac power output and alternating current zero line after connecting with the first voltage-stabiliser tube; The negative electrode of the first voltage-stabiliser tube is the first DC power output end, and the anodic bonding of the first voltage-stabiliser tube extremely publicly; Be connected to publicly alternating current zero line.
Described button power supply unit is made up of button, the second electric capacity, the second voltage-stabiliser tube, the 3rd resistance; The first terminal of button is connected to alternating current phase line the second electric capacity, the 3rd resistance, the second voltage-stabiliser tube composition capacitance decompression half-wave rectifying circuit; The second electric capacity is in parallel with the 3rd resistance, then after connecting with the second voltage-stabiliser tube, is connected to the second terminal and the alternating current zero line of button; The negative electrode of the second voltage-stabiliser tube is the second DC power output end, and the anodic bonding of the second voltage-stabiliser tube extremely publicly.
Described dual path isolation power subsystem is made up of the second diode, the 3rd diode, the 3rd electric capacity; The negative electrode of the second diode, the 3rd diode connects becomes DC supply output; The second diode anode is connected to the first DC power output end; The 3rd diode anode is connected to the second DC power output end; The 3rd Capacitance parallel connection is at DC supply output with publicly.
Described power supply electrifying detecting unit is made up of the 4th resistance, the 4th electric capacity; After the 4th resistance and the 4th capacitances in series connect, other one end of the 4th resistance is connected to DC supply, and other one end of the 4th electric capacity is connected to publicly; The connect in series point of the 4th resistance and the 4th electric capacity is connected to the asynchronous set input of switch control mnemon.
Described trigger impulse shaping unit is made up of the 4th diode, the 5th electric capacity, the 5th resistance; Anodic bonding to the second DC power supply of the 4th diode, negative electrode is connected to the edging trigger pulse input end of switch control mnemon; After the 5th electric capacity is in parallel with the 5th resistance, two ends are connected to respectively the 4th diode cathode and publicly.
Described electric current see-saw circuit is made up of current transformer, amplifier, the 6th resistance, the 6th electric capacity, the 5th diode; The in-phase output end of current transformer is connected to the inverting input of amplifier, and the reversed-phase output of current transformer is connected to the in-phase input end of amplifier; The in-phase input end of amplifier is connected to publicly; The feedback branch of the 6th resistance, the 6th Capacitance parallel connection composition electric current see-saw circuit; The 5th diode cathode is connected to the inverting input of amplifier, and anodic bonding extremely publicly; Described standby current comparison circuit is made up of comparator, the 6th diode, the 7th electric capacity, the 7th resistance; Described standby threshold given value of current circuit is made up of potentiometer; Potentiometer output comparative voltage is connected to the inverting input of comparator; The in-phase input end of comparator is connected to the output of amplifier; One end of the 6th diode cathode, the 7th electric capacity, a client link of the 7th resistance are standby reset signal output, are connected to the asynchronous reset inputs of trigger; The 6th diode anode is connected to the output of comparator; Other one end of the 7th electric capacity is connected to DC supply.
The beneficial effects of the utility model are: (1) standby automatic circuit break function, and load standby exceedes after certain hour, and cut-off switch cuts off load power source automatically, ensures Electrical Safety; (2) regular hand tap function, can be used button manually to connect or disconnect switch; (3) after switch disconnects, the AC power of load and described device is all cut off, and not consumed energy has also ensured to install self safety.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the embodiment of the utility model switch control mnemon, the closed driver element of switch.
Fig. 3 is the embodiment of the utility model switch power supply unit, button power supply unit, dual path isolation power subsystem.
Fig. 4 is the embodiment of the utility model power supply electrifying detecting unit.
Fig. 5 is the embodiment of the utility model trigger impulse shaping unit.
Fig. 6 is the embodiment of the utility model holding state judgement unit.
Fig. 7 is the second embodiment of the utility model holding state judgement unit.
Embodiment
As shown in Figure 1, a kind of standby automatic switching-off device of electric, is made up of switch control mnemon 100, the closed driver element 200 of switch, switch power supply unit 300, button power supply unit 400, dual path isolation power subsystem 500, power supply electrifying detecting unit 600, trigger impulse shaping unit 700, holding state judgement unit 800.
Switch control mnemon 100 has asynchronous set input, asynchronous reset inputs, edging trigger pulse input end, switch controlling signal output, for realizing state control and the memory of switch; Its function is, when the switch controlling signal of output is set, and switch closure; When the switch controlling signal of output is reset, switch disconnects.Described switch controlling signal is set and is reset, and can be positive logic, the corresponding output of set high level, reset output low level; Also can be negative logic, the corresponding output low level of set, output high level resets; Described asynchronous set input, asynchronous reset inputs can be positive logic, and input high level is effective; Also can be negative logic, input low level be effective.
The closed driver element 200 of switch is made up of relay coil and drive circuit; The input of drive circuit is connected to the switch controlling signal output of switch control mnemon 100, and the output of drive circuit is connected to relay coil; Its function is that when switch controlling signal is set, relay coil obtains electric, switch closure; When switch controlling signal is reset, relay coil dead electricity, switch disconnects.
The embodiment of switch control mnemon 100, the closed driver element 200 of switch as shown in Figure 2.Switch control mnemon 100 is made up of trigger 101, and trigger 101 is d type flip flop; The closed driver element 200 of switch is made up of relay coil 201, the first diode 202, the first resistance 203, triode 204; The asynchronous set input of switch control mnemon 100, asynchronous reset inputs, edging trigger pulse input end, switch controlling signal output asynchronous set input S, asynchronous reset inputs R, rising edge trigger impulse input CLK, the output Q of corresponding trigger 101 respectively; The input D of trigger 101 is connected to publicly; The two ends of the first resistance 203 are connected to respectively the base stage of output Q and the triode 204 of trigger 101; Relay coil 201 is collector loads of triode 204; The first diode 202 is fly-wheel diodes, is connected in reverse parallel in the two ends of relay coil 201.
When trigger 101 set, output Q is high level, triode 204 saturation conductions, and relay coil 201 obtains electric; When trigger 101 resets, output Q is low level, and triode 204 ends, relay coil 201 dead electricity.
The preferred d type flip flop 74HC74 of model of trigger 101, rising edging trigger, asynchronous set input S, asynchronous reset input R Low level effective.
The model of trigger 101 can also be selected d type flip flop CD4013, rising edging trigger, and asynchronous set is inputted S, asynchronous reset input R high level is effective.
Trigger 101 also can select to have counter, the register of similar functions.
Switch power supply unit 300, by switch, the first DC power voltage stabilizing the electric circuit constitute, has ac power input end, ac power output, the first DC power output end; The first terminal, second terminal of switch are connected to respectively ac power input end, ac power output; The input of the first DC power voltage stabilizing circuit is connected to the second terminal of switch; The first DC power voltage stabilizing circuit is output as the first DC power output end.The function of switch power supply unit 300 is: when switch is closed, provide AC power to AC load, export effective the first DC power supply simultaneously; When switch disconnects, AC load dead electricity, the first DC power supply voltage is 0V.
Button power supply unit 400, by button, the second DC power voltage stabilizing the electric circuit constitute, has ac power input end, the second DC power output end; The first terminal of button is connected to ac power input end; The input of the second DC power voltage stabilizing circuit is connected to the second terminal of button; The second DC power voltage stabilizing circuit is output as the second DC power output end.When the function of button power supply unit 400 is button closure, export effective the second DC power supply; When button disconnects, the second DC power supply voltage is 0V.
Dual path isolation power subsystem 500 is made up of diode dual path isolation power supply circuits, has the first DC supply input, the second DC supply input and DC supply output; The first DC supply input is connected to the first DC power output end of switch power supply unit 300; The second DC supply input is connected to the second DC power output end of button power supply unit 400; DC supply output is directly exported DC supply, or in the time that the ripple of the first DC power supply, the second DC power supply is larger, DC supply output is exported DC supply again through capacitor filter.The function of dual path isolation power subsystem 500 is: as long as have one in first DC power supply, the second DC power supply of input effectively, export effective DC supply; In the time that the voltage of the first DC power supply of inputting and the second DC power supply is all 0V, the DC supply of output is 0V.
Switch power supply unit 300, button power supply unit 400, the common composition D.C. regulated power supply of dual path isolation power subsystem 500, embodiment as shown in Figure 3.
Switch power supply unit 300 is made up of switch 301, the first electric capacity 302, the first voltage-stabiliser tube 304, the second resistance 303; The first terminal of switch 301 is connected to alternating current phase line L, and the second terminal is ac power output L1; The first electric capacity 302, the second resistance 303, the first voltage-stabiliser tube 304 form capacitance decompression half-wave rectifying circuit; The first electric capacity 302 is in parallel with the second resistance 303, then is connected to ac power output L1 and alternating current zero line N after connecting with the first voltage-stabiliser tube 304; The negative electrode of the first voltage-stabiliser tube 304 is the first DC power supply VCC1 output, and the anodic bonding of the first voltage-stabiliser tube 304 extremely publicly; Be connected to publicly alternating current zero line N.
Switch 301 is normal open switch of relay, and switch 301 be the parts in same relay with relay coil 201, when relay coil 201 must be electric, and switch 301 closures; When relay coil 201 dead electricity, switch 301 disconnects.
Button power supply unit 400 is made up of button 401, the second electric capacity 402, the second voltage-stabiliser tube 404, the 3rd resistance 403; The first terminal of button 401 is connected to alternating current phase line L the second electric capacity 402, the 3rd resistance 403, the second voltage-stabiliser tube 404 and forms capacitance decompression half-wave rectifying circuit; The second electric capacity 402 is in parallel with the 3rd resistance 403, then after connecting with the second voltage-stabiliser tube 404, is connected to the second terminal and the alternating current zero line N of button 401; The negative electrode of the second voltage-stabiliser tube 404 is the second DC power supply VCC2 output, and the anodic bonding of the second voltage-stabiliser tube 404 extremely publicly.
Switch power supply unit 300 and button power supply unit 400 can also be selected capacitance decompression full-wave rectifying circuit simultaneously; Now, should be connected to publicly the direct current negative output terminal of rectifier bridge.Switch power supply unit 300 and button power supply unit 400 can also or be selected separately transformer isolation step-down rectifying circuit simultaneously.
Dual path isolation power subsystem 500 is made up of the second diode 501, the 3rd diode 502, the 3rd electric capacity 503; The negative electrode of the second diode 501, the 3rd diode 502 connects becomes DC supply VCC output; The second diode 501 anodic bonding to the first DC power supply VCC1 outputs; The 3rd diode 502 anodic bonding to the second DC power supply VCC2 outputs; The 3rd electric capacity 503 be connected in parallel on DC supply VCC output and publicly between.
The input of power supply electrifying detecting unit 600 is connected to DC supply, is output as the asserts signal that powers on and produce, and is connected to the asynchronous set input of switch control mnemon 100; Its function is only, when DC supply powers on, to produce an asserts signal, the switch controlling signal set that switch control mnemon 100 is exported, switch closure.
The embodiment of power supply electrifying detecting unit 600 as shown in Figure 4, is made up of the 4th resistance 601, the 4th electric capacity 602; After the 4th resistance 601 and the 4th electric capacity 602 connect in series, other one end of the 4th resistance 601 is connected to DC supply VCC, and other one end of the 4th electric capacity 602 is connected to publicly; The connect in series point output asynchronous set signal US of the 4th resistance 601 and the 4th electric capacity 602, be connected to the asynchronous set input S of trigger 101, the effective asserts signal of output low level while powering on, the switch controlling signal UK set that switch control mnemon 100 is exported, switch closure.
If export the effective asserts signal of high level need to power on time, by the 4th resistance 601 in Fig. 4 and the 4th electric capacity 602 location swaps.
Trigger impulse shaping unit 700 inputs are connected to the second DC power supply, are output as edging trigger pulse signal, are connected to the edging trigger pulse input end of switch control mnemon 100; Its function is, only in the time that button is pressed, exports the effective edge edge of an edging trigger pulse signal, and switch control mnemon 100 is exported.Therefore, when the second DC power supply very stable, when ripple is very little, can be directly using the second DC power supply as edging trigger pulse signal; The second DC power supply ripple is large, and when particularly the second DC power supply is half-wave Voltage pulsating direct-current supply, trigger impulse shaping unit 700 need to be to carrying out filtering after the second DC power supply isolation again.
The embodiment of trigger impulse shaping unit 700 as shown in Figure 5, is made up of the 4th diode 701, the 5th electric capacity 702, the 5th resistance 703; Anodic bonding to the second DC power supply VCC2 of the 4th diode 701, negative electrode is exported edging trigger pulse CP, is connected to the rising edge trigger impulse input CLK of trigger 101; After the 5th electric capacity 702 is in parallel with the 5th resistance 703, two ends are connected to respectively the 4th diode 701 negative electrodes and publicly.Its operation principle is that, when switch 301 closures, button discharge, the asynchronous set input S of trigger 101 and all input high levels of asynchronous reset inputs R, in hold mode; Press the button, at a rising edge of the rising edge trigger impulse input CLK of trigger 101 input, trigger and make output Q=D=0, switch controlling signal UK resets, cut-off switch.
Holding state judgement unit 800 is made up of electric current see-saw circuit, standby threshold given value of current circuit, standby current comparison circuit; Two comparison signal inputs of standby current comparison circuit are connected to respectively electric current see-saw circuit output, standby threshold given value of current circuit output end; Standby current comparison circuit output is exported standby reset signal, is connected to the asynchronous reset inputs of switch control mnemon 100; Its function is, AC load electric current is detected, and reaches after certain hour when it is less than standby threshold electric current continuously, confirm that AC load enters holding state, output reset signal, resets the switch controlling signal that switch control mnemon 100 is exported, cut-off switch.
The embodiment of holding state judgement unit 800 as shown in Figure 6.
Electric current see-saw circuit is made up of current transformer 801, amplifier 802, the 6th resistance 803, the 6th electric capacity 804, the 5th diode 805; The in-phase output end "+" of current transformer 801 is connected to the inverting input of amplifier 802, and the reversed-phase output "-" of current transformer 801 is connected to the in-phase input end of amplifier 802; The in-phase input end of amplifier 802 is connected to publicly; The 6th resistance 803, the 6th electric capacity 804 compose in parallel the feedback branch of electric current see-saw circuit; The 5th diode 805 negative electrodes are connected to the inverting input of amplifier 802, and anodic bonding extremely publicly.Amplifier 502 is selected the single supply op of rail-to-rail I/O.
Standby current comparison circuit is made up of comparator 806, the 6th diode 808, the 7th electric capacity 809, the 7th resistance 810; Standby threshold given value of current circuit is made up of potentiometer 807; The inverting input of comparator 806 exported comparative voltage UF1 and is connected to by potentiometer 807; The in-phase input end of comparator 806 is connected to the output of amplifier 802; One end of the 6th diode 808 negative electrodes, the 7th electric capacity 809, a client link of the 7th resistance 810 are standby reset signal UR output, are connected to the asynchronous reset inputs R of trigger 101; The 6th diode 808 anodic bondings are to the output of comparator 806; Other one end of the 7th electric capacity 809 is connected to DC supply VCC; Other one end of the 7th resistance 810 is connected to publicly.
AC load shown in Fig. 6 is equipment or the electrical equipment of automatic cut-off power while needing standby, and its two ends are connected to respectively ac power output L1 and AC power zero line N.
Current transformer 801 is arranged in the phase line that ac power output L1 is connected with AC load, for detection of the size of current that flows through AC load.Current transformer can adopt the finished product product that detection range is suitable, also coiling electromagnetic induction coil voluntarily.
The operation principle of circuit shown in Fig. 6 is that at the negative half-wave of current transformer 801 output current signals, its output current flows through the 6th resistance 803, the current detection signal U0 of amplifier 802 outputs and the proportional relation of AC load electric current; At the positive half wave of current transformer 801 output current signals, its output current forms loop through the 5th diode 805, and the current detection signal U0 of amplifier 802 outputs is 0V.The 7th resistance 810 charges to the 7th electric capacity 809, and the charging interval is long, in the time that AC load electric current is larger, the vary within wide limits of U0, as long as its peak electricity is pressed with part higher than comparative voltage UF1, comparator 806 is exported high level pulse, by the 6th diode 808, the 7th electric capacity 809 is discharged rapidly, the standby reset signal UR of output is high level, only has AC load in holding state a period of time, be that electric current is very little and continue for some time, when AC load enters holding state, for example, the lasting time can be 15 seconds, 30 seconds, or when more than 1 minute, the crest voltage of U0 also continues identical a period of time lower than comparative voltage UF1, 806 lasting output low levels of comparator, the 6th diode 808 continues cut-off, the 7th electric capacity 809 by the 7th resistance 810 to its charging, the current potential of the standby reset signal UR of output continues to reduce, until become low level, the switch controlling signal UK that switch control mnemon 100 is exported is resetted, control switch disconnects.
Change the charge constant of the 7th resistance 810 to the 7th electric capacity 809, can change AC load in the time of holding state length.
The size that regulator potentiometer 807 changes comparative voltage UF1 can change the size of standby threshold electric current.If need to limit the adjustable range of standby threshold electric current, can be in the two ends of potentiometer 807 series resistance.
If need the standby reset signal UR high level of output effective, can change the element connected mode of the comparison circuit of standby current shown in Fig. 6.The second embodiment as shown in Figure 7, compare with Fig. 6, the location swap of the 7th electric capacity 809, the 7th resistance 810, negative electrode, the anode of the 6th diode 808 exchange, and voltage signal U0, comparative voltage UF1 are connected to respectively inverting input, the in-phase input end of comparator 806.
When switch disconnects, when button is not pressed, the AC power of AC load and described device is all cut off, and only has again and presses the button, and just can make switch closure.
The foregoing is only embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present utility model.
Claims (9)
1. a standby automatic switching-off device of electric, is characterized in that:
Formed by switch control mnemon, the closed driver element of switch, switch power supply unit, button power supply unit, dual path isolation power subsystem, power supply electrifying detecting unit, trigger impulse shaping unit, holding state judgement unit;
Described switch control mnemon has asynchronous set input, asynchronous reset inputs, edging trigger pulse input end, switch controlling signal output;
The closed driver element of described switch is made up of relay coil and drive circuit; The input of drive circuit is connected to the switch controlling signal output of switch control mnemon, and the output of drive circuit is connected to relay coil;
Described switch power supply unit, by switch, the first DC power voltage stabilizing the electric circuit constitute, has ac power input end, ac power output, the first DC power output end; The first terminal, second terminal of switch are connected to respectively ac power input end, ac power output; The input of the first DC power voltage stabilizing circuit is connected to the second terminal of switch; The first DC power voltage stabilizing circuit is output as the first DC power output end; Described switch is the normal open switch of relay;
Described button power supply unit, by button, the second DC power voltage stabilizing the electric circuit constitute, has ac power input end, the second DC power output end; The first terminal of button is connected to ac power input end; The input of the second DC power voltage stabilizing circuit is connected to the second terminal of button; The second DC power voltage stabilizing circuit is output as the second DC power output end;
Described dual path isolation power subsystem is made up of diode dual path isolation power supply circuits, has the first DC supply input, the second DC supply input and DC supply output; The first DC supply input is connected to the first DC power output end of switch power supply unit; The second DC supply input is connected to the second DC power output end of button power supply unit; DC supply output output DC supply;
The input of described power supply electrifying detecting unit is connected to DC supply, and output is connected to the asynchronous set input of switch control mnemon;
Described trigger impulse shaping unit input is connected to the second DC power supply, and output is connected to the edging trigger pulse input end of switch control mnemon;
Described holding state judgement unit is made up of electric current see-saw circuit, standby threshold given value of current circuit, standby current comparison circuit; Two comparison signal inputs of standby current comparison circuit are connected to respectively electric current see-saw circuit output, standby threshold given value of current circuit output end; Standby current comparison circuit output is connected to the asynchronous reset inputs of switch control mnemon.
2. standby automatic switching-off device of electric as claimed in claim 1, is characterized in that, described switch control mnemon is d type flip flop 74HC74.
3. standby automatic switching-off device of electric as claimed in claim 1, is characterized in that, the closed driver element of described switch is made up of relay coil, the first diode, the first resistance, triode; The two ends of the first resistance are connected to respectively the switch controlling signal output of switch control mnemon and the base stage of triode; Relay coil is the collector load of triode; The first diode reverse is connected in parallel on the two ends of relay coil.
4. standby automatic switching-off device of electric as claimed in claim 1, is characterized in that, described switch power supply unit is made up of switch, the first electric capacity, the first voltage-stabiliser tube, the second resistance; The first terminal of switch is connected to alternating current phase line, and the second terminal is ac power output; The first electric capacity, the second resistance, the first voltage-stabiliser tube composition capacitance decompression half-wave rectifying circuit; The first electric capacity is in parallel with the second resistance, then is connected to ac power output and alternating current zero line after connecting with the first voltage-stabiliser tube; The negative electrode of the first voltage-stabiliser tube is the first DC power output end, and the anodic bonding of the first voltage-stabiliser tube extremely publicly; Be connected to publicly alternating current zero line.
5. standby automatic switching-off device of electric as claimed in claim 1, is characterized in that, described button power supply unit is made up of button, the second electric capacity, the second voltage-stabiliser tube, the 3rd resistance; The first terminal of button is connected to alternating current phase line the second electric capacity, the 3rd resistance, the second voltage-stabiliser tube composition capacitance decompression half-wave rectifying circuit; The second electric capacity is in parallel with the 3rd resistance, then after connecting with the second voltage-stabiliser tube, is connected to the second terminal and the alternating current zero line of button; The negative electrode of the second voltage-stabiliser tube is the second DC power output end, and the anodic bonding of the second voltage-stabiliser tube extremely publicly.
6. standby automatic switching-off device of electric as claimed in claim 1, is characterized in that, described dual path isolation power subsystem is made up of the second diode, the 3rd diode, the 3rd electric capacity; The negative electrode of the second diode, the 3rd diode connects becomes DC supply output; The second diode anode is connected to the first DC power output end; The 3rd diode anode is connected to the second DC power output end; The 3rd Capacitance parallel connection is at DC supply output with publicly.
7. standby automatic switching-off device of electric as claimed in claim 1, is characterized in that, described power supply electrifying detecting unit is made up of the 4th resistance, the 4th electric capacity; After the 4th resistance and the 4th capacitances in series connect, other one end of the 4th resistance is connected to DC supply, and other one end of the 4th electric capacity is connected to publicly; The connect in series point of the 4th resistance and the 4th electric capacity is connected to the asynchronous set input of switch control mnemon.
8. standby automatic switching-off device of electric as claimed in claim 1, is characterized in that, described trigger impulse shaping unit is made up of the 4th diode, the 5th electric capacity, the 5th resistance; Anodic bonding to the second DC power supply of the 4th diode, negative electrode is connected to the edging trigger pulse input end of switch control mnemon; After the 5th electric capacity is in parallel with the 5th resistance, two ends are connected to respectively the 4th diode cathode and publicly.
9. standby automatic switching-off device of electric as claimed in claim 1, is characterized in that, described electric current see-saw circuit is made up of current transformer, amplifier, the 6th resistance, the 6th electric capacity, the 5th diode; The in-phase output end of current transformer is connected to the inverting input of amplifier, and the reversed-phase output of current transformer is connected to the in-phase input end of amplifier; The in-phase input end of amplifier is connected to publicly; The feedback branch of the 6th resistance, the 6th Capacitance parallel connection composition electric current see-saw circuit; The 5th diode cathode is connected to the inverting input of amplifier, and anodic bonding extremely publicly; Described standby current comparison circuit is made up of comparator, the 6th diode, the 7th electric capacity, the 7th resistance; Described standby threshold given value of current circuit is made up of potentiometer; Potentiometer output comparative voltage is connected to the inverting input of comparator; The in-phase input end of comparator is connected to the output of amplifier; One end of the 6th diode cathode, the 7th electric capacity, a client link of the 7th resistance are standby reset signal output, are connected to the asynchronous reset inputs of trigger; The 6th diode anode is connected to the output of comparator; Other one end of the 7th electric capacity is connected to DC supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264031.3U CN203951452U (en) | 2014-05-22 | 2014-05-22 | A kind of standby automatic switching-off device of electric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264031.3U CN203951452U (en) | 2014-05-22 | 2014-05-22 | A kind of standby automatic switching-off device of electric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203951452U true CN203951452U (en) | 2014-11-19 |
Family
ID=51893467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420264031.3U Expired - Fee Related CN203951452U (en) | 2014-05-22 | 2014-05-22 | A kind of standby automatic switching-off device of electric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203951452U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009739A (en) * | 2014-05-22 | 2014-08-27 | 湖南工业大学 | On-off control method and device of switch capable of achieving automatic outage in standby process |
| CN110325927A (en) * | 2017-03-02 | 2019-10-11 | 伟肯有限公司 | Device and method for safe shutdown |
| TWI772496B (en) * | 2017-08-28 | 2022-08-01 | 南韓商三星電子股份有限公司 | Semiconductor device and power off method of a semiconductor device |
-
2014
- 2014-05-22 CN CN201420264031.3U patent/CN203951452U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009739A (en) * | 2014-05-22 | 2014-08-27 | 湖南工业大学 | On-off control method and device of switch capable of achieving automatic outage in standby process |
| CN104009739B (en) * | 2014-05-22 | 2016-10-26 | 湖南工业大学 | The on-off control method thereof of a kind of standby automatic power-off switch and device |
| CN110325927A (en) * | 2017-03-02 | 2019-10-11 | 伟肯有限公司 | Device and method for safe shutdown |
| CN110325927B (en) * | 2017-03-02 | 2022-06-28 | 伟肯有限公司 | Device and method for safety shutdown |
| TWI772496B (en) * | 2017-08-28 | 2022-08-01 | 南韓商三星電子股份有限公司 | Semiconductor device and power off method of a semiconductor device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103269537B (en) | Multi-circuit current-limiting power supplying circuit, controlling method thereof and current-limiting power supplying method thereof | |
| CN104009739A (en) | On-off control method and device of switch capable of achieving automatic outage in standby process | |
| CN103260316B (en) | Two-circuit current-limiting driving circuit and two-circuit current-limiting driving method | |
| CN203951452U (en) | A kind of standby automatic switching-off device of electric | |
| CN102044981B (en) | Switching power supply with capacitor discharge circuit | |
| CN203950997U (en) | A kind of standby automatic power-off socket | |
| CN102570853A (en) | Constant-power-output magnetron sputtering coating power supply | |
| CN103996937B (en) | A kind of method of standby automatic power-off socket and break-make power supply | |
| CN205791592U (en) | There is the DC UPS identifying function | |
| CN202059334U (en) | Constant power output magnetron sputtering coating power supply | |
| CN203933403U (en) | A kind of novel off-line type numerically controlled intelligent Switching Power Supply | |
| CN105226967B (en) | Alternating current 220V ultra-low power standby power supply | |
| CN203787687U (en) | Cut-off type power-saving socket | |
| CN203562946U (en) | Power supply control circuit | |
| CN106936321B (en) | Constant current source | |
| CN204595641U (en) | A kind of high-precision temperature regulating circuit | |
| CN205160388U (en) | Full current feedback controller chip of low -cost effective multistage digital filtering of iteration | |
| CN205490199U (en) | Resistance -capacitance reduction voltage circuit | |
| CN205490465U (en) | 555 timer control's electric switch circuit | |
| CN204761141U (en) | Overload protection device double loop power supply automatic switch -over circuit | |
| CN104467161B (en) | A kind of power supply alternating current-direct current input-switching circuit and method | |
| CN203984263U (en) | Rectification commutation circuit | |
| CN109039108A (en) | A kind of output delay control system of the accurate regulated power supply of high frequency | |
| CN202094423U (en) | Self power-off plug assembly and self power-off control system provided with the plug assembly | |
| CN203894694U (en) | Low-power power circuit of computer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20150522 |
|
| EXPY | Termination of patent right or utility model |