CN104914968A - Power supply capable of opening and closing a DC standby power supply - Google Patents
Power supply capable of opening and closing a DC standby power supply Download PDFInfo
- Publication number
- CN104914968A CN104914968A CN201410087836.XA CN201410087836A CN104914968A CN 104914968 A CN104914968 A CN 104914968A CN 201410087836 A CN201410087836 A CN 201410087836A CN 104914968 A CN104914968 A CN 104914968A
- Authority
- CN
- China
- Prior art keywords
- electronic switch
- power supply
- direct current
- power
- relay
- 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.)
- Pending
Links
Landscapes
- Direct Current Feeding And Distribution (AREA)
Abstract
The present invention provides a power supply capable of opening and closing a DC standby power supply, and the power supply comprises a switchover type power circuit and a relay-driven circuit. One end of an alternating current source input port of the switchover type power circuit connects with a selector switch of a relay in series, and the switchover type power circuit converts an AC power source to a DC standby power supply and at least one DC working power supply when the relay is in a conducting state. The relay-driven circuit controls the relay, the selector switch of the relay is non-conducting when a computer connected to the power supply shuts down and thus the switchover type power circuit does not output the DC standby power supply until the moment of the computer starting, and then the relay-driven circuit conducts the selector switch of the relay to provide the DC standby power supply required by the computer starting.
Description
Technical field
The present invention is about a kind of power supply unit, and espespecially one is applied on computer, the power supply unit of direct current standby power able to turn on or off.
Background technology
Refer to shown in Fig. 8, an existing power supply supply 50 has an interchange to DC conversion unit 51, standby power output unit 52 and a working power output unit 53.
This interchange is connected to an AC power AC to DC conversion unit 51, and this AC power is converted to two direct supplys outputs, this standby power output unit 52 and this working power output unit 53 are connected to obtain this two direct supply respectively to DC conversion unit 51 with this interchange, and this direct supply are converted to a direct current standby power V respectively
sBand at least one DC supply V
oP; Wherein when interchange continues to export direct supply to DC conversion unit 51, then namely this standby power output unit 52 continues to export direct current standby power V
sB.
The motherboard 60 of one computer is connected with this standby power output unit 52 and this working power output unit 53 respectively, wherein this standby power output unit 52 continues supply direct current standby power always and gives this motherboard 60, even if make this motherboard 60 still can maintain the holding state of this motherboard 60 with this direct current standby power when shut down of computer; But when shut down of computer, namely this working power output unit 53 does not export above-mentioned at least one DC supply to this motherboard 60.When booting computer, this motherboard 60 just exports a master battery signal end PS-ON and drives this power supply unit 50, makes this working power output unit 53 export this at least one DC supply V to this motherboard 60
oP.
But the conversion efficiency of above-mentioned standby power output unit 52 is not high, but still constantly supply when this motherboard 60 not yet acts on should motherboard 60 above-mentioned direct current standby power V
sB, cause this power supply unit 50 to produce unnecessary consumption, and make this power supply unit 50 overall transformation efficiency reduce further.
Summary of the invention
Because the defect of above-mentioned existing power supply supply, fundamental purpose of the present invention provides a kind of power supply unit of direct current standby power able to turn on or off, to solve the problem still consuming direct current standby power electric power when shut down of computer.
The technical way taked for reaching above-mentioned purpose is: the power supply unit providing direct current standby power able to turn on or off, and it includes:
One suitching type power circuit, one end of its A.C. current source input port is connected in series a change-over switch of a relay, and when this relay conducting, makes this switched-mode power supply circuit AC power is converted to a direct current standby power and at least one DC supply; And
One relay drive circuit, is connected to a drive coil of this relay, and the direct current standby power of this switched-mode power supply circuit, and this relay drive circuit includes:
One initial trigger unit, include one first electronic switch and a battery, wherein the drive coil of this first electronic switch and this relay is serially connected with on the loop of this battery, and the control end of this first electronic switch is connected with the power switch of a computer, makes during this power switch conducts and make this first electronic switch conducting;
One continues trigger element, includes one second electronic switch, and the drive coil of itself and relay is serially connected with the electric power loop of this direct current standby power and has a control end; And
One continues control module, include one the 3rd electronic switch, it is connected with the control end of the second electronic switch of this trigger element that continues, wherein the 3rd electronic switch has a control end connected for the motherboard control signal end of this computer, and determine the whether conducting of the 3rd electronic switch with this motherboard control signal end, wherein when the 3rd electronic switch conducting, this second electronic switch also with conducting.
By above-mentioned relay drive circuit, make the direct current standby power of power supply unit of the present invention with computer on-off break-make, namely, power supply unit of the present invention just makes AC power input this switched-mode power supply circuit to export this direct current standby power in the moment that this computer will be started shooting, and after this shut down of computer, cut off the input of this AC power, make this switched-mode power supply circuit and no longer export this direct current standby power, make this motherboard can not consume this direct current standby power after this shut down of computer, to improve the conversion efficiency of power supply unit entirety of the present invention.
Accompanying drawing explanation
Fig. 1 is the calcspar that power supply unit of the present invention is connected with the motherboard of a computer;
Fig. 2 is the detailed circuit diagram of the first preferred embodiment of the relay drive circuit of power supply unit of the present invention;
Fig. 3 is the detailed circuit diagram of the second preferred embodiment of the relay drive circuit of power supply unit of the present invention;
Fig. 4 is the detailed circuit diagram of the 3rd preferred embodiment of the relay drive circuit of power supply unit of the present invention;
Fig. 5 is the detailed circuit diagram of the 4th preferred embodiment of the relay drive circuit of power supply unit of the present invention;
The power supply unit corresponding diagram 2 of the output waveform figure that Fig. 6 is motherboard and the present invention's direct current standby power able to turn on or off and the output waveform figure of the relay drive circuit shown in Fig. 3;
The power supply unit corresponding diagram 4 of the output waveform figure that Fig. 7 is motherboard and the present invention's direct current standby power able to turn on or off and the output waveform figure of the relay drive circuit shown in Fig. 5;
Fig. 8 is the calcspar that an existing power supply supply is connected with the motherboard of a computer.
Symbol description:
10 switched-mode power supply circuit 11 relays
111 change-over switch 112 drive coils
12 Electromagnetic interference filter 13 DC-AC converters
14 power factor correction unit 15 standby power output units
16 working power output units
20 relay drive circuits
21 initial trigger unit Q301 first electronic switches
211 batteries
22 continue trigger element Q302 second electronic switch
23 continue control module Q303 the 3rd electronic switch
24 starting-up delay unit Q304 the 4th electronic switches
C305 electric capacity
30 motherboard MB signal motherboard control signal ends
PS-ON master battery signal end SW power switch
40 off delay cells D 303 charging diodes
R308 discharge resistance C304 storage capacitor
50 power supply units 51 exchange DC conversion unit
52 standby power output unit 53 working power output units
60 motherboards
Embodiment
Referring to shown in Fig. 1, is the power supply unit of the present invention's direct current standby power able to turn on or off, and it has suitching type power circuit 10 and a relay drive circuit 20.
This switched-mode power supply circuit 10 has relay 11, Electromagnetic interference filter 12, DC-AC converter 13, power factor correction unit 14, standby power output unit 15 and a working power output unit 16.One end of the A.C. current source input port of this switched-mode power supply circuit 10 is connected in series a change-over switch 111 of this relay 11, and therefore, this switched-mode power supply circuit 10 just obtains AC power AC input when this change-over switch 111 conducting.Two input ends of this Electromagnetic interference filter 12 are connected with the other end of the change-over switch 111 of this relay 11 and the A.C. current source input port of this switched-mode power supply circuit 10 respectively, to suppress the electromagnetic interference (EMI) because environmental factor produces when AC power AC inputs.This DC-AC converter 13 is connected with this Electromagnetic interference filter 12 and is converted to direct supply exports to be inputted by AC power AC.This power factor correction unit 14 is connected with this DC-AC converter 13 power factor correcting this direct supply.This standby power output unit 15 and this working power output unit 16 are connected to this power factor correction unit 14 respectively to obtain this direct supply.This direct supply is converted to a standby power V by this standby power output unit 15
sBafter export the motherboard 30 of a computer to.And this working power output unit 16 is a DC-DC converter, and export this motherboard 30 to after this direct supply is converted to the different DC supply of two output levels.In this preferred embodiment, this standby power V
sBoutput level for 5V, two output levels of this two DC supply then respectively for 12V and 24V, but are not all limited with this numerical value.
Refer to shown in Fig. 1 and Fig. 2, first preferred embodiment of relay drive circuit 20 of the present invention's direct current standby power able to turn on or off is connected with the drive coil 112 of this relay 11 and this standby power VSB, and has an initial initial trigger unit 21, trigger element 22 and that continues and to continue control module 23.
This initial trigger unit 21 has one first electronic switch Q301 and a battery 211, and wherein this battery 211 is connected in series to a drive coil 112 of this relay 11 by this first electronic switch Q301 to form a cell circuit.The control end of this first electronic switch Q301 supplies the power switch SW of this computer to connect.In this first preferred embodiment, this first electronic switch Q301 is the bipolar junction transistor (BJT) of a positive-negative-positive, and the emitter of this first electronic switch Q301 and collector are connected with this battery 211 and this drive coil 112 respectively, the base stage of this first electronic switch Q301 is then its control end, and the control end of this first electronic switch Q301 connects for the hot end of this direct current standby power VSB further.
This drive coil 112 continuing trigger element 22 and relay 11 is serially connected with the electric power loop of this direct current standby power VSB, and has one second electronic switch Q302, and wherein this second electronic switch Q302 has a control end.In this first preferred embodiment, this second electronic switch Q302 is the bipolar junction transistor (BJT) of a positive-negative-positive, and its emitter and collector are connected with the hot end of this direct current standby power VSB and this drive coil 112 respectively, the base stage of this second electronic switch Q302 is then its control end.
This control module 23 that continues is connected with this trigger element 22 that continues and has one the 3rd electronic switch Q303, wherein the 3rd electronic switch Q303 is connected with the control end of the second electronic switch Q302 of this trigger element 22 that continues, and the 3rd electronic switch Q303 has a control end connected for the motherboard control signal end MB signal of the motherboard 30 of external computer, and determine the whether conducting of the 3rd electronics Q303 switch with this motherboard control signal end MB signal, wherein when the 3rd electronic switch Q303 conducting, this second electronic switch Q302 also with conducting.In this first preferred embodiment, 3rd electronic switch Q303 is a N-type metal oxide semiconductcor field effect transistor (MOSFET), its drain electrode and source electrode are connected and ground connection with the base stage of this second electronic switch Q302 respectively, and the grid of the 3rd electronic switch Q303 is then its control end.
Detailed process during the first preferred embodiment start of the power supply unit of the present invention's direct current standby power able to turn on or off is below described, please first coordinate and consult shown in following table 1, this is that the power switch of this computer and this motherboard 30 are in the output potential height of each state of this computer, wherein H representative exports noble potential, L then represents output electronegative potential, and the change-over switch 111 of this relay 11 in each state of this computer conducting whether, wherein ON represents conducting, and OFF then represents not conducting.
Table 1
Refer to shown in the output waveform A of Fig. 1, Fig. 2, Fig. 6, D, E and upper table 1, when this booting computer moment, power switch SW is pressed and ground connection, make the first electronic switch Q301 conducting of this initial trigger unit 21, make change-over switch 111 conducting of this relay 11 after making electric current flow through this drive coil 112, and make this standby power output unit 15 export this direct current standby power V further
sB, when the control end of this first electronic switch Q301 is because of this direct current standby power V
sBand during in noble potential, this first electronic switch Q301 not conducting, and make this cell circuit open circuit, namely, this battery 211 is ability output current when this power switch SW is pressed only, and before this power switch SW upsprings, just makes this cell circuit open circuit, to save this battery 211 electric power, in this first preferred embodiment, this first electronic switch Q301 only need can make this cell circuit open circuit after this power switch SW is pressed transient switching 8ms.Refer to shown in the output waveform A in Fig. 2, Fig. 6, B, G and H, after this motherboard 30 acknowledges receipt of start requirement, this motherboard control signal end MB signal is made to be converted to noble potential from electronegative potential, and make the 3rd electronic switching element Q303 continue conducting again, and this second electronic switch Q302 is made to continue conducting in the lump.
When this motherboard 30 shuts down under normal operating conditions, now this motherboard control signal end MB signal exports the 3rd on-off element Q303 not conducting that electronegative potential makes this control module 23 that continues, and make the second electronic switch Q302 not conducting of this trigger element 22 that continues, to cut off the electric current I of the drive coil 112 of this relay 11
relaysupply, and make this change-over switch 111 not conducting further, to cut off the AC power AC input of this switched-mode power supply circuit 10, to cut off this two DC supply and this direct current standby power V when this computer is in off-mode completely
sB.
By the first preferred embodiment of above-mentioned relay drive circuit 20, make the direct current standby power VSB of power supply unit of the present invention with this computer on-off break-make, namely, power supply unit of the present invention just makes AC power AC input this switched-mode power supply circuit 10 in the moment that this computer will be started shooting, to export this direct current standby power V
sB, and after this shut down of computer, cut off this AC power AC input, and make this switched-mode power supply circuit 10 no longer export this direct current standby power V
sB, make this motherboard 30 can not consume this direct current standby power V after this shut down of computer
sB, to improve the conversion efficiency of power supply unit entirety of the present invention.
Refer to shown in Fig. 1 and Fig. 3, second preferred embodiment of relay drive circuit 20 of the present invention's direct current standby power able to turn on or off and the drive coil 112 of this relay 11 and this standby power V
sBconnect, and there is an initial trigger unit 21, trigger element 22, that continues to continue control module 23 and a starting-up delay unit 24, wherein except there is this starting-up delay unit 24 further, circuit and the function mode of this initial trigger unit 21, this continue trigger element 22 and this control module 23 that continues are roughly the same with the first preferred embodiment of this relay drive circuit 20, repeat no more therefore.
This starting-up delay unit 24 has one the 4th electronic switch Q304, wherein the two ends of the 4th electronic switch Q304 respectively with this direct current standby power V
sBhot end and this control module 23 that continues the 3rd electronic switch Q303 control end connect, the control end of the 4th electronic switch Q304 then connects for the power switch SW of this computer, to be controlled the conducting of the 4th electronic switch Q304 by this power switch SW whether.In this preferred embodiment, the 4th electronic switch Q304 is the bipolar junction transistor (BJT) of a positive-negative-positive, and its emitter and collector respectively with this direct current standby power V
sBhot end and the 3rd electronic switch Q303 control end connect, the base stage of the 4th electronic switch Q304 is then its control end.
Refer to Fig. 3, output waveform A in Fig. 6, B, F, shown in G and H, the control end (i.e. the base stage of the 4th electronic switch Q304) of the 4th electronic switch Q304 of this starting-up delay unit 24 is also because power switch SW is pressed and ground connection, and before upspringing to this power switch SW after this direct current standby power VSB produces, this makes the 4th electronic switch Q304 conducting, and make the 4th electronic switch Q304 produce a collector current, to provide control end (i.e. the grid of a 3rd electronic switch Q303) cut-in voltage of the control module 23 that continues, make the 3rd electronic switch Q303 conducting, and make the base earth of the second electronic switch Q302 of this trigger element 22 that continues, and make this second electronic switch Q302 conducting, and make the collector current of this second electronic switch Q302 continue to flow through the drive coil 112 of this relay 11, make this change-over switch 111 still can maintain conducting state with the collector current of the 4th electronic switch Q304 after the cell circuit open circuit of this initial trigger unit 21, to provide this motherboard 30 1 starting-up delay time, this motherboard 30 can be maintained with this direct current standby power VSB within this starting-up delay time operate and be confirmed whether to receive start requirement, after this motherboard 30 acknowledges receipt of start requirement, this motherboard control signal end MB signal is made to be converted to noble potential from electronegative potential, and make the 3rd electronic switch Q303 continue conducting again.
Second preferred embodiment of above-mentioned relay drive circuit 20 is except having the advantage of the first preferred embodiment, further provide acknowledge receipt of start requirement for this motherboard 30 time delay, the time that this trigger element 22 that continues can not be pressed because of this power switch SW is too short and cannot be driven, and makes this computer cannot normal boot-strap.
Refer to shown in Fig. 1 and Fig. 4, the 3rd preferred embodiment of the relay drive circuit 20 of the present invention's direct current standby power able to turn on or off and the drive coil 112 of this relay 11 and this standby power V
sBconnect, and there is an initial trigger unit 21, trigger element 22, that continues to continue control module 23 and a starting-up delay unit 24, wherein except this starting-up delay unit 24, circuit and the function mode of this initial trigger unit 21, this continue trigger element 22 and this control module 23 that continues are roughly the same with the second preferred embodiment of this relay drive circuit 20, repeat no more therefore.
In the 3rd preferred embodiment of this relay drive circuit 20, the control end of the 4th electronic switch Q304 of this starting-up delay unit 24 connects a master battery signal end PS-ON of this motherboard 30 further, and coordinates the keying of this master battery signal end PS-ON co-controlling the 4th electronic switch Q304 with this power switch SW.In addition, the control end of the 4th electronic switch Q304 connects an electric capacity C305 further, makes the 4th electronic switch Q304 conducting to guarantee the control end of the 4th electronic switch Q304 to be in electronegative potential further.
Refer to Fig. 1, Fig. 4, output waveform C in Fig. 7, D, F, shown in I and upper table 1, when this computer is in open state, the master battery signal end PS-ON of this motherboard 30 is converted to electronegative potential from noble potential, the working power output unit 16 of this switched-mode power supply circuit 10 is made to export this two DC supply to this motherboard 30, and now the control end of the 4th electronic switch Q304 of this starting-up delay unit 24 is electronegative potential, and make the 4th electronic switch Q304 continue to maintain conducting, therefore, even if this motherboard control signal end MB signal is in open state from high electricity for being converted to electronegative potential because of abnormal factorses such as faults in this computer, 4th electronic switch Q304 still can maintain the 3rd electronic switch Q303 conducting of this control module 23 that continues with its collector current, still conducting is maintained to make the change-over switch 111 of this relay 11, the AC power AC input of this switched-mode power supply circuit 10 can not be cut off because of the of short duration abnormal factors of this motherboard control signal end MB signal.
Refer to shown in the output waveform B in Fig. 1, Fig. 4, Fig. 7, C, D, E, F and upper table 1.When this computer be in a period of time after open state do not used or received standby requirement time, this computer then enters holding state, the master battery signal end PS-ON of this motherboard 30 is converted to noble potential from electronegative potential, export with the DC supply cutting off switched-mode power supply circuit 10, and make the 4th electronic switch Q304 not conducting in the lump, but the motherboard control signal end MB signal of this motherboard 30 still maintains noble potential makes this control module 23 that continues maintain conducting, still conducting is maintained to make the change-over switch 111 of this relay 11, the AC power AC input of this switched-mode power supply circuit 10 can not be cut off because this computer is in holding state, make this motherboard 30 still can obtain this direct current standby power V
sBinput to maintain holding state, and can recover open state according to user's demand at any time.
When this motherboard 30 shuts down under normal operating conditions, the master battery signal end PS-ON of this motherboard 30 is then converted to noble potential from electronegative potential again, make the 4th electronic switch Q304 not conducting of this starting-up delay unit 24, and motherboard control signal end MB signal exports the 3rd electronic switch Q303 not conducting that electronegative potential makes this control module 23 that continues, and make the second electronic switch Q302 not conducting of this trigger element 22 that continues, to cut off the electric current supply of the drive coil 112 of this relay 11, and make this change-over switch 111 not conducting further, to cut off the AC power AC input of this switched-mode power supply circuit 10, to cut off this two DC supply and this direct current standby power V when this computer is in off-mode completely
sB.
3rd preferred embodiment of above-mentioned relay drive circuit 20 is except having the advantage of the second preferred embodiment, further guarantee the change-over switch 111 of this relay 11, the AC power AC input of this switched-mode power supply circuit 10 can not be cut off because of the of short duration abnormal factors of this motherboard control signal end MB signal, and avoid this computer to produce the phenomenon of error cut-off machine.
Refer to shown in Fig. 1 and Fig. 5, the 4th preferred embodiment of the relay drive circuit 20 of the present invention's direct current standby power able to turn on or off and the drive coil 112 of this relay 11 and this standby power V
sBconnect, and there is an initial trigger unit 21, trigger element 22, that continues to continue control module 23, starting-up delay unit 24 and an off delay unit 40, wherein except there is this off delay unit 40 further, circuit and the function mode of this initial trigger unit 21, this trigger element 22 that continues, this continue control module 23 and this starting-up delay unit 24 are roughly the same with the 3rd preferred embodiment of this relay drive circuit 20, repeat no more therefore.
This off delay unit 40 has a charging diode D303, a discharge resistance R308 and a storage capacitor C304, wherein the negative electrode of this charging diode D303 and anode are connected to the control end of the 3rd electronic switch Q303 of this control module 23 that continues and this motherboard control signal end MB signal, this discharge resistance R308 respectively and are then serially connected with between the control end of the 3rd electronic switch Q303 and this motherboard control signal end MB signal and in parallel with this charging diode D303.This storage capacitor C304 two ends are then connected and ground connection with the control end of the 3rd electronic switch Q303 respectively.When this computer is in open state or holding state, because this motherboard control signal end MB signal exports noble potential, make this storage capacitor C304 by this charging diode D303 fast storage energy.When this connecting computer receive shutdown require time, this storage capacitor C304 is then by its storage power of this discharge resistance R308 slow release, make the 3rd electronic switch Q303 can with energy stored by this storage capacitor C304 conducting one time delay again, to postpone the shutdown of this computer, make this computer can not in time shutting down instant cut-off, wherein user can be adjusted the time delay of this shut down of computer by the resistance value of the capacitance of adjustment this storage capacitor C304 and this discharge resistance R308.
4th preferred embodiment of above-mentioned relay drive circuit 20, except having the advantage of the 3rd preferred embodiment, further guarantees that this computer can not cause having capsule information to fail to store in time because of instant cut-off during shutdown.
In sum, by first to fourth preferred embodiment of above-mentioned relay drive circuit 20, make the direct current standby power V of power supply unit of the present invention
sBwith this computer on-off break-make, that is, power supply unit of the present invention just makes AC power AC input this switched-mode power supply circuit 10 in the moment that this computer will be started shooting, to export this direct current standby power V
sB, and after this shut down of computer, cut off this AC power AC input, and make this switched-mode power supply circuit 10 no longer export this direct current standby power V
sB, make this motherboard 30 can not consume this direct current standby power V after this shut down of computer
sB, to improve the conversion efficiency of power supply unit entirety of the present invention.
Claims (10)
1. a power supply unit for direct current standby power able to turn on or off, is characterized in that, described power supply unit includes:
One suitching type power circuit, one end of its A.C. current source input port is connected in series a change-over switch of a relay, and when this relay conducting, makes this switched-mode power supply circuit AC power is converted to a direct current standby power and at least one DC supply; And
One relay drive circuit, is connected to a drive coil of this relay, and the direct current standby power of this switched-mode power supply circuit, and this relay drive circuit includes:
One initial trigger unit, include one first electronic switch and a battery, wherein the drive coil of this first electronic switch and this relay is serially connected with on the loop of this battery, and the control end of this first electronic switch and an electricity
The power switch of brain connects, and makes during this power switch conducts and makes this first electronic switch conducting;
One continues trigger element, includes one second electronic switch, and the drive coil of itself and this relay is serially connected with the electric power loop of this direct current standby power and has a control end; And
One continues control module, include one the 3rd electronic switch, it is connected with the control end of the second electronic switch of this trigger element that continues, wherein the 3rd electronic switch has a control end be connected with the motherboard control signal end of this computer, and determine the whether conducting of the 3rd electronic switch with this motherboard control signal end, wherein when the 3rd electronic switch conducting, the also conducting thereupon of this second electronic switch.
2. the power supply unit of direct current standby power able to turn on or off as claimed in claim 1, is characterized in that, the control end of the first electronic switch of this initial trigger unit is connected to the hot end of this direct current standby power further;
This relay drive circuit has a starting-up delay unit further, it has one the 4th electronic switch, wherein one end of the 4th electronic switch is connected to the hot end of this direct current standby power, the other end is then connected to the control end of the 3rd electronic switch of this control module that continues, the control end of the 4th electronic switch is then connected with the power switch of this computer, make this power switch press and make the 4th electronic switch conducting instantaneously, make the 3rd electronic switch conducting.
3. the power supply unit of direct current standby power able to turn on or off as claimed in claim 2, is characterized in that, the control end of the 4th electronic switch of this starting-up delay unit is connected with the master battery signal end of this computer further.
4. the power supply unit of direct current standby power able to turn on or off as claimed in claim 3, is characterized in that, this relay drive circuit has an off delay unit further, has:
One charging diode, its negative electrode and anode are connected to control end and this motherboard control signal end of the 3rd electronic switch of this control module that continues respectively;
One discharge resistance, to be serially connected with between the control end of the 3rd electronic switch and this motherboard control signal end and in parallel with this charging diode; And
One electric capacity, its two ends are connected and ground connection with the control end of the 3rd electronic switch respectively.
5. the power supply unit of direct current standby power able to turn on or off as claimed in claim 1, it is characterized in that, first electronic switch of this initial trigger unit is the bipolar junction transistor of a positive-negative-positive, and the emitter of this first electronic switch and collector are connected with the drive coil of this battery and this relay respectively, the base stage of this first electronic switch is then its control end.
6. the power supply unit of the direct current standby power able to turn on or off according to any one of claim 2 to 4, it is characterized in that, first electronic switch of this initial trigger unit is the bipolar junction transistor of a positive-negative-positive, and the emitter of this first electronic switch and collector are connected with the drive coil of this battery and this relay respectively, the base stage of this first electronic switch is then its control end.
7. the power supply unit of direct current standby power able to turn on or off as claimed in claim 5, it is characterized in that, second electronic switch of this trigger element that continues is the bipolar junction transistor of a positive-negative-positive, and its emitter and collector are connected with the hot end of this direct current standby power and the drive coil of this relay respectively, the base stage of this second electronic switch is then its control end;
3rd electronic switch of this control module that continues is a N-type metal oxide semiconductcor field effect transistor, and continue with this respectively base stage of trigger element of its drain electrode and source electrode is connected and ground connection, and the grid of the 3rd electronic switch is then its control end.
8. the power supply unit of direct current standby power able to turn on or off as claimed in claim 6, it is characterized in that, second electronic switch of this trigger element that continues is the bipolar junction transistor of a positive-negative-positive, and its emitter and collector are connected with the hot end of this direct current standby power and the drive coil of this relay respectively, the base stage of this second electronic switch is then its control end;
3rd electronic switch of this control module that continues is a N-type metal oxide semiconductcor field effect transistor, and continue with this respectively base stage of trigger element of its drain electrode and source electrode is connected and ground connection, and the grid of the 3rd electronic switch is then its control end.
9. the power supply unit of the direct current standby power able to turn on or off according to any one of claim 2 to 4, it is characterized in that, 4th electronic switch of this starting-up delay unit is the bipolar junction transistor of a positive-negative-positive, and its emitter and collector are connected with the control end of the hot end of this direct current standby power and the 3rd electronic switch of this control module that continues respectively, the base stage of the 4th electronic switch is then its control end.
10. the power supply unit of direct current standby power able to turn on or off as claimed in claim 6, it is characterized in that, 4th electronic switch of this starting-up delay unit is the bipolar junction transistor of a positive-negative-positive, and its emitter and collector are connected with the control end of the hot end of this direct current standby power and the 3rd electronic switch of this control module that continues respectively, the base stage of the 4th electronic switch is then its control end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410087836.XA CN104914968A (en) | 2014-03-11 | 2014-03-11 | Power supply capable of opening and closing a DC standby power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410087836.XA CN104914968A (en) | 2014-03-11 | 2014-03-11 | Power supply capable of opening and closing a DC standby power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104914968A true CN104914968A (en) | 2015-09-16 |
Family
ID=54084114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410087836.XA Pending CN104914968A (en) | 2014-03-11 | 2014-03-11 | Power supply capable of opening and closing a DC standby power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104914968A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110996027A (en) * | 2019-12-27 | 2020-04-10 | 深圳康佳电子科技有限公司 | Standby circuit, method and television |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6509658B1 (en) * | 1998-12-16 | 2003-01-21 | Jinnes Technologies Inc. | Device for the automatic shut-off of equipment's stand-by power |
| TW200950296A (en) * | 2008-05-20 | 2009-12-01 | Acbel Polytech Inc | Switched power supply capable of raising light-load efficiency |
| TW201407929A (en) * | 2012-08-14 | 2014-02-16 | Acbel Polytech Inc | AC backup power system |
-
2014
- 2014-03-11 CN CN201410087836.XA patent/CN104914968A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6509658B1 (en) * | 1998-12-16 | 2003-01-21 | Jinnes Technologies Inc. | Device for the automatic shut-off of equipment's stand-by power |
| TW200950296A (en) * | 2008-05-20 | 2009-12-01 | Acbel Polytech Inc | Switched power supply capable of raising light-load efficiency |
| TW201407929A (en) * | 2012-08-14 | 2014-02-16 | Acbel Polytech Inc | AC backup power system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110996027A (en) * | 2019-12-27 | 2020-04-10 | 深圳康佳电子科技有限公司 | Standby circuit, method and television |
| CN110996027B (en) * | 2019-12-27 | 2022-07-05 | 深圳康佳电子科技有限公司 | Standby circuit, method and television |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7301997B2 (en) | IV curve scanning method for optimizers, photovoltaic systems and solar modules | |
| CN102104277B (en) | Redundant power supply control method, device and system | |
| CN102025272A (en) | Discharging circuit | |
| CN103633727A (en) | Hybrid electric photovoltaic accumulation system inversion control all-in-one machine | |
| CN202906774U (en) | High-power photovoltaic inverter with automatic power-off auxiliary power supply circuit | |
| CN104600831A (en) | Inverter auxiliary power supply system and method | |
| CN202488350U (en) | Fly-back switching power supply circuit suitable for photovoltaic system | |
| CN102694471B (en) | Auxiliary power supply system for photovoltaic inverter | |
| CN206698005U (en) | Dual input double startup exports voltage regulation type uninterrupted switch power supply | |
| CN105262183A (en) | Power-saving type USB charging structure | |
| CN204497972U (en) | A kind of novel retention time circuit structure | |
| CN203660640U (en) | Economical power failure maintenance circuit | |
| CN104914968A (en) | Power supply capable of opening and closing a DC standby power supply | |
| CN203596658U (en) | Power supply control output circuit | |
| CN203026919U (en) | Input under-voltage protection circuit of photovoltaic inverter power supply | |
| CN213780904U (en) | Power supply switching system | |
| CN212061818U (en) | Display device | |
| CN106410871B (en) | Power-supply management system and method | |
| CN202679056U (en) | Server power supply configuration apparatus | |
| CN103683998A (en) | Method and device for reducing nighttime power consumption of photovoltaic inverter | |
| CN204068336U (en) | A kind of charging circuit | |
| CN111048055A (en) | Display and display standby power consumption control method | |
| CN109905018B (en) | Power supply system and control method thereof | |
| CN206977310U (en) | A kind of auxiliary power supply of photovoltaic inverter start-up circuit | |
| EP2757671A1 (en) | A control method and system for assisting active power factor correction loads |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150916 |
|
| WD01 | Invention patent application deemed withdrawn after publication |