CN2288470Y - Computer switch power controller - Google Patents
Computer switch power controller Download PDFInfo
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- CN2288470Y CN2288470Y CN 96237773 CN96237773U CN2288470Y CN 2288470 Y CN2288470 Y CN 2288470Y CN 96237773 CN96237773 CN 96237773 CN 96237773 U CN96237773 U CN 96237773U CN 2288470 Y CN2288470 Y CN 2288470Y
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- power supply
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Abstract
The utility model relates to a computer switch power supply controller. An AC 220V power supply is connected with a switch power supply control circuit 1 in series and is connected with a rectifying filter circuit 2, namely, one end b of the AC 220V power supply is connected with a fuse wire F1 in series and is connected with the rectifying filter circuit 2, and the other end a of the AC 220V power supply is connected with an electronic control switch 1 in series and is connected with the rectifying filter circuit 2. A low-voltage switch S1 is utilized to control the AC 220V voltage of the computer to be switched on and switched off, and a low-voltage power supply switch is used. The problems that the circuit is impacted by surge voltage and the high-frequency impulse interference is caused by a mechanical switch can be avoided by using the utility model, and the sensitivity of the switch is high. Because of low voltage circuits, workpieces and human bodies are absolutely safe. The utility model has the characteristics of safe and reliable switch, low manufacture cost, easy installation and long service life.
Description
A kind of appliance mains switch that relates to, particularly computer power switch.
Now computer power supply all has four 220V AC power cords to be connected on the high voltage control switch with mechanical contact of cabinet outside, and this switch is very big to power supply self rush of current, and inconvenience is installed, often wrong plug and cause the parts scaling loss and influence personal safety easily.And the manufacturing cost height, poor reliability, shortcoming such as serviceable life is short.
The purpose of this utility model is to provide a kind of safe and reliable low-voltage control switch power supply for people.
Fig. 1 is a computer switching power supply control device block scheme.
Fig. 2 is computer switching power supply control circuit 1 block scheme.
Fig. 3 is computer switching power supply control circuit 1 bistable state, relay control type schematic diagram.
Fig. 4 is computer switching power supply control circuit 1 bistable state, optoelectronic induction, SCR control formula schematic diagram.
Fig. 5 is the single switch of computer switching power supply control circuit 1 low pressure, optoelectronic induction, SCR control formula schematic diagram.
Fig. 6 is a computer switching power supply control device schematic diagram.
The utility model is realized by the following method: such as Fig. 1, shown in Figure 6, the computer power supply control device comprises There are current rectifying and wave filtering circuit 2, half-bridge drive circuit 3, power conversion transformer 4, rectification output 5 and control time-delay to protect Protection circuit, alternating current 220V power supply tandem tap power control circuit 1 connects current rectifying and wave filtering circuit 2. Switching Power Supply control The 220V of circuit major control current rectifying and wave filtering circuit 2 exchanges input. When connecting the 220V alternating current, the Switching Power Supply control Circuit 1 processed is operated under the wait state, and the output of switching power source control circuit 1 does not have 220V to output to rectifying and wave-filtering In the circuit 2, rear circuit is work not. When only pressing the button S1, the bistable circuit in the switching power source control circuit 1 Because triggering is overturn, internal high pressure switch connection, alternating current 220V are input to current rectifying and wave filtering circuit 2, Provide direct-current working volts about 300V, half-bridge driven electricity through the backward half-bridge drive circuit 3 of rectification Road 3 promotes power conversion transformer 4, power conversion transformer under the control of control circuit for pulse-width modulation 4 the other end connects rectification output 5, the positive and negative 5V of output direct current after rectification, 12V voltage. Control circuit for pulse-width modulation is through PG time-delay circuit for generating output PG signal simultaneously. + 5V negative-feedback electricity The road is input to control circuit for pulse-width modulation Let it Be again control half-bridge drive circuit 3. Whole Switching Power Supply is opened Begin to work. If when again pressing low tension switch button S1, in the switching power source control circuit 1 Bistable circuit overturns again because of triggering, and the high-voltage switch gear in the switching power source control circuit 1 disconnects, rectification Do not have again the input of alternating current 220V power supply in the filter circuit 2, rear circuit quits work, and whole circuit again Be in wait state.
As Fig. 2, shown in Figure 3, switching power source control circuit 1 is to connect low tension switch control circuit 1-2 by low-voltage direct output circuit 1-1 to connect high pressure output electronic control switch 1-3 again.Alternating current 220V power supply a series connection by capacitor C 1 and resistance R 1 and joint group or the circuit step-down after be connected the input end of bridge rectifier B1, alternating current 220V power supply b connects another input end of bridge rectifier B1, and the output terminal two ends parallel voltage-stabilizing diode D1 of bridge rectifier B1, capacitor C 2 are formed the low-voltage direct output circuit 1-1 of switching power source control circuit 1.After current rectifying and wave filtering circuit 1-1 step-down, rectification, voltage stabilizing, filtering, export low-voltage DC by the alternating current 220V power supply and supply with low tension switch control circuit 1-2, again by low tension switch control circuit 1-2 control high pressure output electronic control switch 1-3.Switching power source control circuit 1 is to connect low tension switch control circuit 1-2 by low-voltage direct output circuit 1-1, this low tension switch control circuit 1-2 is triode BG1, the current collection base stage of BG2 is resistance in series R2 respectively, the positive pole that connects bridge rectifier B1 behind the R4 respectively, triode BG1, the emitter of BG2 connects the negative pole of bridge rectifier B1 respectively, the collector that connects triode BG2 behind the base series resistor R7 of triode BG1, the collector that connects triode BG1 behind the base series resistor R6 of triode BG2, the collector series resistance R5 of triode BG1, capacitor C 4, C5, resistance R 8 backs connect the collector of triode BG2, resistance R 3 one ends connect the positive pole of bridge rectifier B1, the other end is connected capacitor C 4, the end of C5 and low pressure knob S1, the other end of low pressure knob S1 connects the negative pole of bridge rectifier B1, capacitor C 3 is connected in parallel on the base stage and emitter of triode BG1, the anodal base stage that connects triode BG1 of diode D2, negative pole is connected between resistance R 5 and the capacitor C 4, the anodal base stage that connects triode BG2 of diode D3, negative pole is connected between resistance R 8 and the capacitor C 5.The high pressure of switching power source control circuit 1 output electronic control switch 1-3 is the collector that connects the triode BG2 of low tension switch control circuit 1-2 behind the base series resistor R9 of triode BG3, the positive pole that connects bridge rectifier B1 behind the control coil of triode BG3 collector series relay JK, triode BG3 emitter connects the negative pole of bridge rectifier B1, and the contact location of relay J K disconnects and being connected on the power supply a circuit of alternating current 220V.The bistable circuit of being made up of triode BG1, BG2 is under first energising situation, because the effect of capacitor C 3, C4, C5 and resistance R 3, make triode BG1 end, triode BG2 conducting, this moment, A point current potential remained low level, and triode BG3 does not have the conducting electric current and ends owing to base stage.When pressing knob S1, since the inverting action of bistable circuit, triode BG1 conducting, triode BG2 ends, and makes that A point current potential is a high level by low transition, and the base stage of triode BG3 has bias voltage and conducting, relay J K adhesive, contact is connected, and power source loads is started working.
As shown in Figure 4, switching power source control circuit 1 is to connect low tension switch control circuit 1-2 by low-voltage direct output circuit 1-1 to connect high pressure output electronic control switch 1-3-1 again.Alternating current 220V power supply a series connection is by an input end that is connected bridge rectifier B1 after capacitor C 1 and the circuit step-down that resistance R 1 composes in parallel, alternating current 220V power supply b connects another input end of bridge rectifier B1, and the output terminal two ends parallel voltage-stabilizing diode D1 of bridge rectifier B1, capacitor C 2 are formed the low-voltage direct output circuit 1-1 of switching power source control circuit 1.After current rectifying and wave filtering circuit 1-1 step-down, rectification, voltage stabilizing, filtering, export low-voltage DC by the alternating current 220V power supply and supply with low tension switch control circuit 1-2, again by low tension switch control circuit 1-2 control high pressure output electronic control switch 1-3-1.Switching power source control circuit 1 is to connect low tension switch control circuit 1-2 by low-voltage direct output circuit 1-1, this low tension switch control circuit 1-2 is triode BG1, the collector of BG2 is resistance in series R2 respectively, the positive pole that connects bridge rectifier B1 behind the R4 respectively, triode BG1, the emitter-base bandgap grading of BG2 connects the negative pole of bridge rectifier B1 respectively, the collector that connects triode BG2 behind the base series resistor R7 of triode BG1, the collector that connects triode BG1 behind the base series resistor R6 of triode BG2, the collector series resistance R5 of triode BG1, capacitor C 4, C5, resistance R 8 backs connect the collector of triode BG2, resistance R 3 one ends connect the positive pole of bridge rectifier B1, the other end is connected capacitor C 4, the end of C5 and low pressure knob S1, the other end of low pressure knob S1 connects the negative pole of bridge rectifier B1, capacitor C 3 is connected in parallel on the base stage and emitter of triode BG1, diode D2 ends the base stage that the utmost point connects triode BG1, negative pole is connected between resistance R 5 and the capacitor C 4, the anodal base stage that connects triode BG2 of diode D3, negative pole is connected asking of resistance R 8 and capacitor C 5.High pressure output electronic control switch 1-3 is the collector that connects the triode BG2 of low tension switch control circuit 1-2 behind the base series resistor R9 of triode BG3, the positive pole that connects bridge rectifier B1 behind the collector series resistance R10 of triode BG3, the negative pole that connects bridge rectifier B1 behind the triode BG3 emitter series connection light emitting diode D4, resistance R 12 and capacitor C 6 series connection backs are in parallel with controllable silicon BCR, be connected on then on the power supply a circuit of alternating current 220V, resistance R 11 is connected alternating current 220V power supply a with photoresistance R13 series connection back one end, and the other end connects the control end of controllable silicon BCR.The bistable circuit of being made up of triode BG1, BG2 is under first energising situation, because the effect of capacitor C 3, C4, C5 and resistance R 3, make triode BG1 end, triode BG2 conducting, this moment, A point current potential remained low level, and triode BG3 does not have the conducting electric current and ends owing to base stage.When pressing knob S1, because the inverting action of bistable circuit, triode BG1 conducting, triode BG2 ends, and makes that A point current potential is a high level by low transition, the base stage of triode BG3 has bias voltage and conducting, light emitting diode D4 is luminous because of conducting, and photoresistance R13 is resistance decreasing under the illumination of light emitting diode D4, makes the control end of controllable silicon BCR obtain trigger current and conducting, power source loads is started working, and resistance R 12 and capacitor C 6 are for preventing that surge voltage from establishing.
As shown in Figure 5, alternating current 220V power supply a series connection by capacitor C 1 and resistance R 1 and joint group or the circuit step-down after be connected the input end of bridge rectifier B1, alternating current 220V power supply b connects another input end of bridge rectifier B1, and the output terminal two ends parallel voltage-stabilizing diode D1 of bridge rectifier B1, capacitor C 2 are formed the low-voltage direct output circuit 1-1 of switching power source control circuit 1.After current rectifying and wave filtering circuit 1-1 step-down, rectification, voltage stabilizing, filtering, export low-voltage DC by the alternating current 220V power supply and supply with low tension switch control circuit 1-2-1, again by low tension switch control circuit 1-2-1 control high pressure output electronic control switch 1-3-2.The low tension switch control circuit 1-2-1 of switching power source control circuit 1 is that a low tension switch S1 is connected on the current supply circuit of bridge rectifier B1, after its high pressure output electronic switch 1-3-2 is resistance R 14 series connection light emitting diode D4, the positive pole that connects bridge rectifier B1 behind the one end series connection low pressure knob S1, the other end connects the negative pole of bridge rectifier B1, resistance R 12 and capacitor C 6 series connection backs are in parallel with controllable silicon BCR, be connected on then on the power supply a circuit of alternating current 220V, resistance R 11 is connected alternating current 220V power supply a with photoresistance R13 series connection back one end, and the other end connects the control end of controllable silicon BCR.When pressing knob S1, light emitting diode D4 conducting and luminous.Photoresistance R13 is resistance decreasing under the illumination of light emitting diode D4, makes the control end of controllable silicon BCR obtain trigger current and conducting, and power source loads is started working, and resistance R 12 and capacitor C 6 are for preventing that surge voltage from establishing.
The utility model has solved the impact to circuit of the high-frequency impulse that mechanical switch caused interference and surge current owing to adopt low-voltage power switch, and switch is highly sensitive, owing to be low-voltage circuit, so parts and human body are perfectly safe.Have that switch is safe and reliable, low cost of manufacture, installation are convenient, the characteristics of long service life.
Claims (8)
1, a kind of computer switching power supply control device; include current rectifying and wave filtering circuit (2), half-bridge drive circuit (3), energy conversion transformer (4), rectification output (5) and control delay protection circuit, it is characterized in that: alternating current 220V power supply tandem tap power control circuit (1) connects current rectifying and wave filtering circuit (2).
2, computer switching power supply control device according to claim 1, it is characterized in that: the end b series connection fuse F1 of alternating current 220V power supply connects an end of current rectifying and wave filtering circuit (2), and other end a series connection electronic control switch connects current rectifying and wave filtering circuit (2).
3, computer switching power supply control device according to claim 1, it is characterized in that: alternating current 220V power supply a series connection is by an input end that is connected bridge rectifier B1 after capacitor C 1 and the circuit step-down that resistance R 1 composes in parallel, alternating current 220V power supply b connects another input end of bridge rectifier B1, and the output terminal two ends parallel voltage-stabilizing diode D1 of bridge rectifier B1, capacitor C 2 are formed the low-voltage direct output circuit (1-1) of switching power source control circuit (1).
4, computer switching power supply control device according to claim 1, it is characterized in that: the low-voltage direct output circuit (1-1) of its switching power source control circuit (1) connects low tension switch control circuit (1-2), this low tension switch control circuit (1-2) is triode BG1, the collector of BG2 is resistance in series R2 respectively, the positive pole that connects bridge rectifier B1 behind the R4 respectively, triode BG1, the emitter of BG2 connects the negative pole of bridge rectifier B1 respectively, the collector that connects triode BG2 behind the base series resistor R7 of triode BG1, the collector that connects triode BG1 behind the base series resistor R6 of triode BG2, the collector series resistance R5 of triode BG1, capacitor C 4, C5, resistance R 8 backs connect the collector of triode BG2, resistance R 3 one ends connect the positive pole of bridge rectifier B1, the other end is connected capacitor C 4, the end of C5 and low pressure knob S1, the other end of low pressure knob S1 connects the negative pole of bridge rectifier B1, capacitor C 3 is connected in parallel on the base stage and emitter of triode BG1, the anodal base stage that connects triode BG1 of diode D2, negative pole is connected between resistance R 5 and the capacitor C 4, the anodal base stage that connects triode BG2 of diode D3, negative pole is connected between resistance R 8 and the capacitor C 5.
5, computer switching power supply control device according to claim 1, it is characterized in that: the high pressure of its switching power source control circuit (1) output electronic control switch (1-3) is the collector that connects the triode BG2 of low tension switch control circuit (1-2) behind the base series resistor R9 of triode BG3, the positive pole that connects bridge rectifier B1 behind the control coil of triode BG3 collector series relay JK, triode BG3 emitter connects the negative pole of bridge rectifier B1, and the contact location of relay J K disconnects and being connected on the power supply a circuit of alternating current 220V.
6, computer switching power supply control device according to claim 1, it is characterized in that: its high pressure output electronic control switch (1-3-1) is the collector that connects the triode BG2 of low tension switch control circuit (1-2) behind the base series resistor R9 of triode BG3, the positive pole that connects bridge rectifier B1 behind the collector series resistance R10 of triode BG3, the negative pole that connects bridge rectifier B1 behind the emitter series connection light emitting diode D4, resistance R 12 and capacitor C 6 series connection backs are in parallel with controllable silicon BCR, be connected on then on the power supply a circuit of alternating current 220V, resistance R 11 is connected alternating current 220V power supply a with photoresistance R13 series connection back one end, and the other end connects the control end of controllable silicon BCR.
7, computer switching power supply control device according to claim 1, it is characterized in that: the low tension switch control circuit (1-2-1) of its switching power source control circuit (1) also can be that a low tension switch S1 is connected on the current supply circuit of bridge rectifier B1, after its high pressure output electronic switch (1-3-2) is resistance R 14 series connection light emitting diode D4, the positive pole that connects bridge rectifier B1 behind the one end series connection low pressure knob S1, the other end connects the negative pole of bridge rectifier B1, resistance R 12 and capacitor C 6 series connection backs are in parallel with controllable silicon BCR, be connected on then on the power supply a circuit of alternating current 220V, resistance R 11 is connected alternating current 220V power supply a with photoresistance R13 series connection back one end, and the other end connects the control end of controllable silicon BCR.
8, according to claim 1,4 described computer switching power supply control device, it is characterized in that: its low pressure knob S1 is microswitch, thin film switch or inductive switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96237773 CN2288470Y (en) | 1996-11-20 | 1996-11-20 | Computer switch power controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96237773 CN2288470Y (en) | 1996-11-20 | 1996-11-20 | Computer switch power controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2288470Y true CN2288470Y (en) | 1998-08-19 |
Family
ID=33913262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96237773 Expired - Fee Related CN2288470Y (en) | 1996-11-20 | 1996-11-20 | Computer switch power controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2288470Y (en) |
Cited By (1)
| 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 |
-
1996
- 1996-11-20 CN CN 96237773 patent/CN2288470Y/en not_active Expired - Fee Related
Cited By (1)
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |