CN2798173Y - Electrical source for computer - Google Patents
Electrical source for computer Download PDFInfo
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- CN2798173Y CN2798173Y CN 200520059796 CN200520059796U CN2798173Y CN 2798173 Y CN2798173 Y CN 2798173Y CN 200520059796 CN200520059796 CN 200520059796 CN 200520059796 U CN200520059796 U CN 200520059796U CN 2798173 Y CN2798173 Y CN 2798173Y
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Abstract
The utility model relates to power source for a computer, which comprises a power source inner interface (1), a main rectifying filter circuit (2), a standby part circuit and a working part circuit, wherein a switch circuit is arranged on a circuit between the inner interface (1) and the main rectifying filter circuit (2). The switch circuit is electrically connected with the working part circuit so as to acquire a feedback signal. When the working part circuit works, the switch circuit controls the circuit between the inner interface (1) and the main rectifying filter circuit (2) to be conducted. When the working part circuit stops working, the switch circuit controls the circuit between the inner interface (1) and the main rectifying filter circuit (2) to be cut off. The utility model realizes automatic power-off protection and computer starting encryption protection for the power source of a computer. The service life of the power source is prolonged and can be prevented from being damaged because of overvoltage. The utility model provides a safety barrier for preventing from illegally starting a computer and enhances the safety of computer data.
Description
Technical field
The utility model relates to a kind of computer power supply, more particularly, relates to a kind of power supply that is used for personal computer.
Background technology
Be the circuit structure diagram of present personal computer power supply as shown in Figure 1, comprise inner joint 1, main current rectifying and wave filtering circuit 2, self-maintained circuit 3, standby switches transformer 4, standby current rectifying and wave filtering circuit 5, exciting circuit 6, push-pull circuit 7, compositions such as operating switch transformer 8, work current rectifying and wave filtering circuit 9.With the external civil power of this power supply, civil power arrives main current rectifying and wave filtering circuit 2 by inner joint 1, obtain about 300 volts of DC voltage, self-maintained circuit 3 work, through standby switches transformer 4,5 volts of SB DC voltage of standby current rectifying and wave filtering circuit 5 outputs, this voltage is delivered to computer motherboard, is used for supporting the work of computer motherboard stand-by circuit.When pressing the computer starting switch, send the PS-ON control signal by computer motherboard and deliver to computer power supply, start exciting circuit 6 work, exciting circuit 6 further promotes push-pull circuit 7 work, through operating switch transformer 8, the various voltages of work current rectifying and wave filtering circuit 9 outputs (12 volts ,-12 volts, 5 volts ,-5 volts, 3.3 volts etc.), support computing machine operate as normal.
There is following problem in existing personal computer power supply:
1, some user does not cut off external power supply usually after using computer shutdown, and computing machine standby partial circuit is still in running order, on the one hand, this part circuit will consume certain electric energy (about 5 watts), is on the other hand, and be the trough phase of electricity consumption night, voltage peak is higher, the power circuit element is in high pressure conditions for a long time, damages easily, shortens power source life, sometimes also can directly cause the damage of computer power supply because of the overvoltage of peak value in short-term of electrical network;
2, in addition, existing power supply does not have encryption measures, though generally all be provided with startup password during the computer booting login, but other people still can open computing machine with other username and password, even the somebody can invade computing machine by decryption, computer data is illegally used, duplicates or malicious sabotage, thereby have the security breaches of computer data.
The utility model content
The technical problems to be solved in the utility model is, a kind of computer power supply is provided, by between power supply inner joint and main current rectifying and wave filtering circuit, on-off circuit being set, utilize the positive voltage feedback signal of power work partial circuit, switching on and off of gauge tap circuit, whole power cut-off behind the realization computer shutdown guarantees power safety and serviceable life; In addition,, realize the encryption control of power supply, prevent that illegal user from invading computing machine, improve Computer Data Security by encipher remote controller and on-off circuit coupling.
The technical scheme that its technical matters that solves the utility model adopts is: structure comprises power supply inner joint, main current rectifying and wave filtering circuit, standby partial circuit and working portion circuit, it is characterized in that: on the circuit between described inner joint and the main current rectifying and wave filtering circuit, on-off circuit is set, this on-off circuit is electrically connected with described working portion circuit and obtains the positive voltage feedback signal, when this working portion circuit working, this on-off circuit is controlled the circuit turn-on between described inner joint and the main current rectifying and wave filtering circuit; When this working portion circuit quit work, the circuit that this on-off circuit is controlled between described inner joint and the main current rectifying and wave filtering circuit disconnected.
The dynamo-electric source of aforementioned calculation, it is characterized in that: described on-off circuit comprises simple and easy capacity voltage dropping circuit, switch delay circuit, turn-on control circuit, and described simple and easy capacity voltage dropping circuit is connected on the live wire of circuit between inner joint and the main current rectifying and wave filtering circuit and the zero line and comprises step-down rectifying circuit and filter capacitor; Described switch delay circuit comprises switching control section and time-delay part, and this switching control section input end is connected with described filter capacitor hot side, output terminal be connected on the described zero line after described time-delay is partly connected; Described turn-on control circuit comprises the gauge tap circuit that is connected between described main current rectifying and wave filtering circuit and the described on-off circuit and the delay control circuit and the feedback control circuit that are connected with this gauge tap circuit control end, described delay control circuit comprises control element and PNP triode, described control element is connected with the hot end of described delay circuit and obtains the input CONTROLLED POTENTIAL, be connected the output CONTROLLED POTENTIAL with described PNP transistor base, the collector of this PNP triode is connected with the control end of gauge tap circuit, described feedback control circuit comprises the optical coupling device, 1 pin series resistor of this optical coupling device is electrically connected with described working portion circuit, 2 pin ground connection, this optical coupling device and PNP triode are controlled switching on and off of described gauge tap circuit.
The dynamo-electric source of aforementioned calculation, it is characterized in that: described gauge tap circuit comprises the bidirectional triode thyristor on the zero line that is connected between described main current rectifying and wave filtering circuit and the described on-off circuit.
The dynamo-electric source of aforementioned calculation, it is characterized in that: also comprise remote control transmitter, this remote control transmitter comprises coding integrated circuit and the transmitter module that back parallel with one another is connected with battery by switch, described coding integrated circuit is set coding and is outputed to described transmitter module by its output pin serial, and this transmitter module is connected with antenna; The switching control section of described switch delay circuit comprises receiver module and decoding integrated circuit simultaneously in parallel with described filter capacitor, this receiver module receives described transmitter module signal, its output pin is connected with the input pin of this decoding integrated circuit, the output pin of this decoding integrated circuit is connected in series the back and partly is connected in series with the time-delay of described switch delay circuit with diode, described time-delay part comprises delay capacitor and resistance arranged side by side mutually.
The beneficial effects of the utility model are:
1. realized that behind computer shutdown power supply with the outage of power supply standby partial circuit, prevents that source element is in the crest voltage state for a long time when computing machine is not worked automatically, has improved power source life, and prevented that the power supply that night, superpotential caused from damaging;
2. by the remote control encryption device is set, realized the encryption control of power connection, prevented to trespass computing machine, for computer data provides safety curtain.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the circuit structure diagram of existing personal computer power supply;
Fig. 2 is the circuit diagram of the utility model computer power supply embodiment 1;
Fig. 3 is the remote control transmitter circuit diagram;
Fig. 4 is the pin synoptic diagram of PT2262 type coding integrated circuit 21 and TX315A-T01 type transmitter module 22 among Fig. 3;
Fig. 5 is the pin synoptic diagram of TX315A-R01 type receiver module 111 among Fig. 2, PT2272 type decoding integrated circuit 112, LM358 type comparer 133;
Fig. 6 is the circuit diagram of the utility model computer power supply embodiment 2;
Fig. 7 is the circuit diagram of the utility model computer power supply embodiment 3;
Fig. 8 is the circuit diagram of the utility model computer power supply embodiment 4;
Fig. 9 is the circuit diagram of the utility model computer power supply embodiment 5.
Embodiment
Embodiment 1:
Fig. 2 is the circuit diagram of the utility model computer power supply embodiment 1.As shown in Figure 2, on the inner joint 1 of existing power supply and the circuit between the main current rectifying and wave filtering circuit 2, on-off circuit is set, this on-off circuit comprises simple and easy capacity voltage dropping circuit 10, switch delay circuit and turn-on control circuit 13, and the switch delay circuit comprises switching control section 11 and time-delay part 12.Circuit between inner joint 1 and the main current rectifying and wave filtering circuit 2 comprises live wire 1001 and ground wire 1002.
Simple and easy capacity voltage dropping circuit 10 comprises: be connected on the live wire 1001 after electric capacity 101 and resistance 102 parallel connections, another parallel connected end connects the negative pole of voltage stabilizing diode 103 and the positive pole of commutation diode 104, the positive pole of voltage stabilizing diode 103 is connected with zero line 1002, filter capacitor 105 is connected in series with the negative pole of commutation diode 104, and is connected on the zero line 1002.
The switching control section 11 of switch delay circuit comprises: receiver module 111 and the decoding integrated circuit 112 in parallel with filter capacitor 105, the output pin of receiver module 111 (showing as Fig. 5) is connected with the input pin (showing as Fig. 5) of decoding integrated circuit 112, the output pin of decoding integrated circuit 112 is connected in series the back and is connected in series with delay circuit 12 with diode 113, delay circuit 12 is connected on the zero line 1002.Receiver module 111 and decoding integrated circuit 112 adopt existing product, can adopt TX315A-R01 pattern piece etc. as receiver module 111, and decoding integrated circuit 112 can adopt PT2272 type integrated circuit etc.
The time-delay part 12 of switch delay circuit comprises delay capacitor parallel with one another 121 and resistance 122.
Turn-on control circuit 13 comprises the bidirectional triode thyristor 130 that is arranged between main current rectifying and wave filtering circuit 2 and the on-off circuit and the delay control circuit and the feedback control circuit that are connected with bidirectional triode thyristor 130 control ends, and bidirectional triode thyristor 130 is arranged on the zero line 1002.
Delay control circuit comprises: comparer 133 and PNP triode 136,2 pin (showing as Fig. 5) of comparer 133 are connected with the hot end of delay circuit 12 and obtain the input CONTROLLED POTENTIAL, 1 pin series resistor 134 is connected the output CONTROLLED POTENTIAL with the base stage of PNP triode 136,3 pin are connected respectively to by divider resistance 131 and 132 on the output terminal of commutation diode 104 of simple and easy capacity voltage dropping circuit 10 and the zero line 1002 and obtain comparative voltage, and 8 pin, 4 pin are connected respectively on the output terminal and zero line 1002 of commutation diode 104; The collector of PNP triode 136 is connected with the control end of bidirectional triode thyristor 130, and base stage and emitter are connected to the output terminal of commutation diode 104 respectively by biasing resistor 135 and 137.Comparer 133 can adopt existing product, as LM358 type comparer etc.
Feedback control circuit comprises optical coupling device 139,1 pin series resistor 138 of this optical coupling device is connected with the work current rectifying and wave filtering circuit 9 of power work partial circuit and obtains the positive voltage feedback signal, also can be connected with other circuit of power work partial circuit such as operating switch transformer 8 etc. and obtain the positive voltage feedback signal; 2 pin ground connection (casing), 4 pin, 3 pin are connected with the emitter and collector of PNP triode 136 respectively, and 3 pin are connected with the control end of bidirectional triode thyristor 130 simultaneously.Optical coupling device 139 can adopt existing product, as P621 type optical coupling device etc.
Be the circuit diagram of remote control transmitter as shown in Figure 3.This remote control transmitter comprises coding integrated circuit 21 and the transmitter module 22 that back parallel with one another is connected with battery 24 by switch 20, coding integrated circuit 21 is set coding, output to transmitter module 22 by its output pin (as shown in Figure 4) serial, transmitter module 22 is connected with antenna 23.Coding integrated circuit 21 and transmitter module 22 can adopt existing product, can adopt PT2262 type integrated circuit etc. as coding integrated circuit 21, and transmitter module 22 can adopt TX315A-T01 pattern piece etc.
The principle of work of this on-off circuit is:
Press remote control transmitter switch 20, the voltage of battery 24 is added on coding integrated circuit 21 and the transmitter module 22, coding integrated circuit 21 address codes according to oneself obtain the corresponding digital coding, this coding is exported from the output pin serial, go modulate emission module 22, transmitter module 22 sends radio signal by antenna 23.In the computer power supply casing, by simple and easy capacity voltage dropping circuit 10, filter capacitor 105 two ends obtain 5 volts DC voltage as supply voltage.Receiver module 111 is received the radio signal that remote control transmitter sends, amplification and demodulation by inside, output signal is to the input pin of decoding integrated circuit 112, by decoding integrated circuit 112 decodings, if be judged as correct coded signal, output pin output noble potential by decoding integrated circuit 112, delay capacitor 121 obtains voltage, 2 pin voltages of comparer 133 are higher than 3 pin comparative voltages, 1 pin output electronegative potential from comparer 133,136 conductings of PNP triode, triggering is as bidirectional triode thyristor 130 conductings of electronic AC switch, connect inner joint 1 to loop between the main current rectifying and wave filtering circuit 2, by self-maintained circuit 3, standby switches transformer 4, standby current rectifying and wave filtering circuit 5 provides 5 volts of SB standby voltages to computer motherboard.Disconnection along with telepilot switch 20, the output pin noble potential of decoding integrated circuit 112 also disappears, delay capacitor 121 is by resistance 122 discharges, after time-delay (for example 10 seconds) after a while, 2 pin voltages of comparer 133 are lower than 3 pin comparative voltages, the 1 pin output noble potential of comparer 133, PNP triode 136 ends, bidirectional triode thyristor 130 ends because of losing trigger pip, if in delay capacitor 121 discharge delay times, computing machine normally starts, the PS-ON signal enabling exciting circuit 6 of being come by mainboard, push-pull circuit 7,8 work of operating switch transformer, be added in photoelectronic coupler 139 control ends by 5 volts of the output of work current rectifying and wave filtering circuit 9 or 12 volts of voltages as feedback signal, photoelectronic coupler 139 output terminal conductings are kept and are triggered bidirectional triode thyristor 130 conductings, and circuit is in steady-working state.Computing machine does not start or the computer system shutdown between the discharge time delay of delay capacitor 121 if surpass, no feedback voltage on the photoelectronic coupler 139, bidirectional triode thyristor 130 is because of Triggerless ends, and dump is connected with civil power, finishes one from being switched to the cycle period of closing.
Embodiment 2:
Fig. 6 is the circuit diagram of the utility model computer power supply embodiment 2.As shown in Figure 6, on the inner joint 1 of existing power supply and the circuit between the main current rectifying and wave filtering circuit 2, on-off circuit is set, this on-off circuit comprises simple and easy capacity voltage dropping circuit 10, switch delay circuit and turn-on control circuit 13, and the switch delay circuit comprises switching control section 11 and time-delay part 12.Circuit between inner joint 1 and the main current rectifying and wave filtering circuit 2 comprises live wire 1001 and ground wire 1002.
Present embodiment is substantially the same manner as Example 1, difference only is: in turn-on control circuit 13, replace comparer 133 and divider resistance 131 and 132 with NPN type triode 133a, cancellation delay circuit resistance 122 in the time-delay part 12 of switch delay circuit, triode 133a base stage series resistor 122a is connected with the hot end of delay capacitor 121, emitter is connected with zero line 1002, and collector is connected with the PNP transistor base.During work, when decoding integrated circuit 112 output noble potentials, delay capacitor 121 obtains voltage, and triode 133a conducting makes 136 conductings of PNP triode, triggers bidirectional triode thyristor 130 conductings.After remote control transmitter switch 20 disconnects, decoding integrated circuit 112 output electronegative potentials, delay capacitor 121 discharges, be lower than forward voltage when being discharged to triode 133a base voltage, triode 133a ends, and PNP triode 136 is ended, bidirectional triode thyristor 130 Triggerless and ending.
Fig. 7 is the circuit diagram of the utility model computer power supply embodiment 3.As shown in Figure 7, on the inner joint 1 of existing power supply and the circuit between the main current rectifying and wave filtering circuit 2, on-off circuit is set, this on-off circuit comprises simple and easy capacity voltage dropping circuit 10, switch delay circuit and turn-on control circuit 13, and the switch delay circuit comprises switching control section 11 and time-delay part 12.Circuit between inner joint 1 and the main current rectifying and wave filtering circuit 2 comprises live wire 1001 and ground wire 1002.
Present embodiment is substantially the same manner as Example 2, difference only is: the bidirectional triode thyristor 130 that is arranged in the turn-on control circuit 13 on the zero line 1002 is substituted by bidirectional triode thyristor 130 and AC relay 1301, the contact switch of AC relay 1301 is arranged on the live wire 1001 or zero line 1002 of circuit between described main current rectifying and wave filtering circuit 2 and the on-off circuit, be connected with zero line 1002 behind the coil tandem of bidirectional triode thyristor 130 and AC relay 1301, the coil of AC relay 1301 is connected with live wire 1001.During work, when bidirectional triode thyristor 130 was subjected to triggering and conducting, AC relay 1301 was connected circuit with the contact switch adhesive, triggered when disconnecting the contact switch of AC relay 1301 disconnecting circuit that resets when bidirectional triode thyristor 130 loses.
Embodiment 4:
Fig. 8 is the circuit diagram of the utility model computer power supply embodiment 4.As shown in Figure 8, on the inner joint 1 of existing power supply and the circuit between the main current rectifying and wave filtering circuit 2, on-off circuit is set, this on-off circuit comprises simple and easy capacity voltage dropping circuit 10, switch delay circuit and turn-on control circuit 13, and the switch delay circuit comprises switching control section 11 and time-delay part 12.Circuit between inner joint 1 and the main current rectifying and wave filtering circuit 2 comprises live wire 1001 and ground wire 1002.
Present embodiment is substantially the same manner as Example 1, difference only is: the switching control section 11 of switch delay circuit is replaced by the contact switch 25 that resets certainly, that is to say that delay capacitor 121 obtains noble potential by the contact switch 25 that resets certainly, also no longer needs remote control transmitter to come gauge tap control section 11.Be connected in series and be connected the output terminal of the commutation diode 104 of simple and easy capacity voltage dropping circuit 10 from reset contact switch 25 and delay circuit 12.
Present embodiment and embodiment 1 principle of work are basic identical; difference is: embodiment 1 is by remote control transmitter switching control section 11; can realize the electric power starting encryption; prevent to trespass computing machine; and present embodiment hand control switch control section 11; encrypt the standby partial circuit of cutting off the electricity supply automatically after realizing shutting down, the purpose of protection power supply though can not realize electric power starting.
Fig. 9 is the circuit diagram of the utility model computer power supply embodiment 5.As shown in Figure 9, on the inner joint 1 of existing power supply and the circuit between the main current rectifying and wave filtering circuit 2, on-off circuit is set, this on-off circuit comprises simple and easy capacity voltage dropping circuit 10, switch delay circuit and turn-on control circuit 13, and the switch delay circuit comprises switching control section 11 and time-delay part 12.Circuit between inner joint 1 and the main current rectifying and wave filtering circuit 2 comprises live wire 1001 and ground wire 1002.
Present embodiment and embodiment 2 principle of work are basic identical, difference only is: in turn-on control circuit 13,4 pin of the optical coupling device 139 of feedback control circuit, 3 pin are not to be connected with the emitter and collector of PNP triode 136 respectively, but be connected on the base stage and zero line 1002 of PNP triode 136, with the conducting of light coupling device 139 control PNP triodes 136, control the conducting of bidirectional triode thyristor 130.Promptly when power work current rectifying and wave filtering circuit 9 has feedback voltage, 139 conductings of optical coupling device, 136 conductings of PNP triode, 130 conductings of PNP triode 136 collectors control bidirectional triode thyristor.Otherwise when power work current rectifying and wave filtering circuit 9 no feedback voltages, optical coupling device 139 ends, and PNP triode 136 ends because of base stage is in noble potential, and bidirectional triode thyristor 130 ends because of Triggerless.
More than difference part among several embodiment, also can constitute new embodiment with in other embodiments.
Technical solutions of the utility model have realized:
1. behind computer shutdown, power supply with the outage of power supply standby partial circuit, prevents that source element is in the crest voltage state for a long time when computing machine is not worked automatically, has improved power source life, and prevents that the power supply that night, superpotential caused from damaging;
2. by the remote control encryption device is set, the connection of power supply is implemented to encrypt control, prevent to trespass computing machine, for computer data provides safety curtain.
Claims (10)
1, a kind of computer power supply, comprise power supply inner joint (1), main current rectifying and wave filtering circuit (2), standby partial circuit and working portion circuit, it is characterized in that: on the circuit between described inner joint (1) and the main current rectifying and wave filtering circuit (2), on-off circuit is set, this on-off circuit is electrically connected with described working portion circuit and obtains the positive voltage feedback signal, when this working portion circuit working, this on-off circuit is controlled the circuit turn-on between described inner joint (1) and the main current rectifying and wave filtering circuit (2); When this working portion circuit quit work, the circuit that this on-off circuit is controlled between described inner joint (1) and the main current rectifying and wave filtering circuit (2) disconnected.
2, computer power supply according to claim 1, it is characterized in that: described on-off circuit comprises simple and easy capacity voltage dropping circuit, switch delay circuit, turn-on control circuit, and described simple and easy capacity voltage dropping circuit input end is connected the live wire (1001) of circuit between inner joint (1) and the main current rectifying and wave filtering circuit (2) and zero line (1002) and goes up and comprise step-down rectifying circuit and filter capacitor; Described switch delay circuit comprises switching control section and time-delay part, and the input end of this switching control section is connected with described filter capacitor side of the positive electrode, output terminal be connected on the described zero line after described time-delay is partly connected; Described turn-on control circuit comprises the gauge tap circuit that is connected between described main current rectifying and wave filtering circuit (2) and the described on-off circuit and the delay control circuit and the feedback control circuit that are connected with this gauge tap circuit control end, described delay control circuit comprises control element and PNP triode (136), described control element is connected with the hot end of described delay circuit and obtains the input CONTROLLED POTENTIAL, be connected the output CONTROLLED POTENTIAL with described PNP triode (136) base stage, the collector of this PNP triode is connected with the control end of gauge tap circuit, described feedback control circuit comprises optical coupling device (139), 1 pin series resistor of this optical coupling device is electrically connected with described working portion circuit, 2 pin ground connection, this optical coupling device (139) switches on and off with PNP triode (136) the described gauge tap circuit of control.
3, computer power supply according to claim 2 is characterized in that: described gauge tap circuit comprises the bidirectional triode thyristor (130) on the zero line (1002) that is connected between described main current rectifying and wave filtering circuit (2) and the described on-off circuit.
4, computer power supply according to claim 2, it is characterized in that: described gauge tap circuit comprises bidirectional triode thyristor and AC relay, the contact switch of described AC relay is arranged on the circuit between described main current rectifying and wave filtering circuit (2) and the described on-off circuit, described bidirectional triode thyristor and the series connection of AC relay coil, this bidirectional triode thyristor (130) is connected on the zero line (1002), and this AC relay coil is connected on the live wire (1001).
5, according to the described computer power supply of one of claim 2 to 4, it is characterized in that: also comprise remote control transmitter, this remote control transmitter comprises coding integrated circuit (21) and the transmitter module (22) that back parallel with one another is connected with battery (24) by switch (20), described coding integrated circuit (21) is set coding and is outputed to described transmitter module (22) by its output pin serial, and this transmitter module (22) is connected with antenna (23); The switching control section of described switch delay circuit comprises receiver module (111) and decoding integrated circuit (112) simultaneously in parallel with described filter capacitor, this receiver module (111) receives described transmitter module (22) signal, its output pin is connected with the input pin of this decoding integrated circuit (112), the output pin of this decoding integrated circuit (112) is connected in series the back and partly is connected in series with the time-delay of described switch delay circuit with diode, described time-delay part comprises delay capacitor (121) and resistance (122) arranged side by side mutually.
6, according to the described computer power supply of one of claim 2 to 4, it is characterized in that: the switching control section of described switch delay circuit comprises from resetting contact switch (25), the time-delay of described switch delay circuit partly comprises mutually delay capacitor (121) and resistance (122) arranged side by side, and this contact switch (25) that resets is certainly connected with this delay capacitor in parallel (121) and resistance (122) and is connected the positive potential side of described filter capacitor.
7, computer power supply according to claim 5, it is characterized in that: the step-down rectifying circuit of described simple and easy capacity voltage dropping circuit is connected in series with voltage stabilizing diode after comprising resistance and electric capacity parallel connection, the positive pole of described voltage stabilizing diode is connected with described zero line, described resistance is connected with described live wire (1001) with a parallel connected end of electric capacity, also comprise with described resistance being connected commutation diode as the output terminal of described simple and easy capacity voltage dropping circuit with another parallel connected end of electric capacity, described filter capacitor is serially connected between this commutation diode and the described zero line (1002).
8, computer power supply according to claim 7 is characterized in that: 3 pin of described optical coupling device are connected with the collector and emitter of described PNP triode (136) respectively with 4 pin, and 3 pin are connected with the control end of bidirectional triode thyristor (130) simultaneously.
9, computer power supply according to claim 7 is characterized in that: 4 pin of described optical coupling device are connected with described zero line (1002) with the base stage of described PNP triode respectively with 3 pin.
10, according to the described computer power supply of one of claim 7 to 9, it is characterized in that: described delay control circuit control element comprises comparer (133), the divider resistance (131 of comparer (133) 3 pin, 132) and comparer (133) 1 pin output resistances (134), these comparer (133) 2 pin are connected with described delay circuit, comparer (133) 3 pin are by divider resistance (131,132) be connected between the output terminal and described zero line of commutation diode of described simple and easy capacity voltage dropping circuit, comparer (133) 1 pin are connected with described PNP transistor base (136) by its 1 pin output resistance (134), and the base stage and the emitter of described PNP triode (136) are provided with biasing resistor respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520059796 CN2798173Y (en) | 2005-06-08 | 2005-06-08 | Electrical source for computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520059796 CN2798173Y (en) | 2005-06-08 | 2005-06-08 | Electrical source for computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2798173Y true CN2798173Y (en) | 2006-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520059796 Expired - Fee Related CN2798173Y (en) | 2005-06-08 | 2005-06-08 | Electrical source for computer |
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| Country | Link |
|---|---|
| CN (1) | CN2798173Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382832A (en) * | 2008-06-25 | 2009-03-11 | 邹伟明 | Notebook computer power adapter with power switch |
| CN105226967A (en) * | 2015-09-24 | 2016-01-06 | 延边大学 | Alternating current 220V ultra-low power standby power supply |
-
2005
- 2005-06-08 CN CN 200520059796 patent/CN2798173Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382832A (en) * | 2008-06-25 | 2009-03-11 | 邹伟明 | Notebook computer power adapter with power switch |
| CN105226967A (en) * | 2015-09-24 | 2016-01-06 | 延边大学 | Alternating current 220V ultra-low power standby power supply |
| CN105226967B (en) * | 2015-09-24 | 2019-03-05 | 延边大学 | Alternating current 220V ultra-low power standby power supply |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |