CN101656471A - Power circuit capable of automatically converting voltage - Google Patents
Power circuit capable of automatically converting voltage Download PDFInfo
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- CN101656471A CN101656471A CN200910192403A CN200910192403A CN101656471A CN 101656471 A CN101656471 A CN 101656471A CN 200910192403 A CN200910192403 A CN 200910192403A CN 200910192403 A CN200910192403 A CN 200910192403A CN 101656471 A CN101656471 A CN 101656471A
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Abstract
The invention discloses a switch power supply circuit with adjustable output voltage, comprising a DC output connector unit and a control unit, wherein the control unit is connected with the DC outputconnector unit through a patchplug socket positioned among DC output lines of a switch power supply; and the control unit comprises a decoding circuit, a voltage-stabilizing power supply circuit, anoutput voltage regulation circuit and a switch control circuit, wherein the decoding circuit is used for identifying the codes of an inner signal wire of a connector; the voltage-stabilizing power supply circuit is connected with the decoding circuit and is used for providing a working power supply for the decoding circuit; the output voltage regulation circuit is connected with a photoelectric coupler and regulates the output voltage of the switch power supply through the photoelectric coupler; and the switch control circuit is connected with the output voltage regulation circuit and controlsthe output intensity of the output voltage regulation circuit by being triggered by a signal of the decoding circuit; and the DC output connector unit adopts a three-state coding system. The invention programs through connectors which has different specifications and are connected to the output end to change output voltage, realizes that the output voltage of the switch power supply is completelyaccurate and adjustable within a preset voltage range and has simple circuit and low cost.
Description
Technical field
The present invention relates to field of switch power, specifically being meant in the Switching Power Supply is programmed by the connector of the different size that output connected changes a kind of power circuit of output voltage.
Background technology
In some application, the user wishes to have identity function but the different electrical equipment of model difference or type produces and equipment can use same power supply power supply, but the rated operational voltage difference of different products or equipment, the supply voltage that needs is just different, with the connector that power supply is used neither be identical, therefore can change according to the replacing of product or equipment with regard to output voltage and the connector that needs Switching Power Supply, reach coupling power supply fully.
At present in field of switch power, realize that the independently power supply of single channel output can export different voltage, be used for and different model, dissimilar electric equipment products or matched power supply, need to adopt adjusting devices such as adjustable resistor, band switch to come regulation voltage.Adopt these regulative modes; occur regulating error through regular meeting, the output voltage that causes power supply may not be needed voltage, if this moment, Switching Power Supply was connected to electric equipment products or equipment; might make expensive electric equipment products or device damage, cause very big loss to the user.
Therefore, be necessary to adopt new power circuit to solve the problems referred to above.
Summary of the invention
The technical problem that the present invention need solve is:
(1), adapt to different electricity consumption products or equipment requirements and change the direct current out connector that is connected with Switching Power Supply, make switch power source output voltage along with change, reach the coupling between power supply and the different electricity consumption product;
(2), out connector adopts the ternary coding to come corresponding different magnitudes of voltage, reduces the output line of power supply as far as possible, reduces manufacture difficulty and cost;
(3), in the prior art, different out connectors is endowed different codings, with the decode change of identification back control output voltage of coded message, usually need to adopt special decoding circuit or single-chip microcomputer to realize, the circuit complexity, the device cost height, the market competitiveness of whole power supply reduces.
For solving the problems of the technologies described above, the technical scheme that circuit of the present invention is taked is:
But provide a kind of power circuit of automatically converting voltage, comprise the direct current out connector and be connected to the control unit of direct current out connector by the DC leadout of power supply and the patchplug socket between DC leadout, described control unit comprises: be used for decoding circuit that connector internal signal wire coding is discerned; Be connected with decoding circuit, be used for providing the voltage-stabilized power supply circuit of working power to decoding circuit; Be connected with photoelectrical coupler, adjust circuit by the output voltage that photoelectrical coupler is regulated switch power source output voltage; Be connected with output voltage regulation circuit, it is subjected to decoding circuit signal triggering and then control output voltage to adjust the ON-OFF control circuit of the output intensity of circuit.Described direct current out connector unit adopts ternary coded system to encode, and coding adds up to 3
nIndividual, wherein n is for transmitting the minimum line number of code signal line, and described coding is corresponding one by one with the VD of power settings.
A kind of concrete and succinct scheme is:
Described decoding circuit comprises triode Q101, Q102, Q103, resistance R 102-R106, R108, R109 and the diode D101 of the equal ground connection of emitter-base bandgap grading; Triode Q102, Q103 are also as ON-OFF control circuit simultaneously; Triode Q101 base stage is passed through resistance R 104 ground connection, and meets code signal line X1, collector connecting transistor Q102 base stage by resistance R 103; Triode Q102 base stage is passed through resistance R 106 ground connection, and connects voltage stabilizing circuit by resistance R 105, and collector electrode connects output voltage by resistance R 107 and adjusts circuit; Triode Q103 base stage is passed through resistance R 109 ground connection, and meets code signal line X1 by resistance R 108, and collector electrode connects output voltage by resistance and adjusts circuit.
Voltage stabilizing didoe ZD101, resistance R 101 are serially connected with between positive source+V0 and the ground in the described voltage-stabilized power supply circuit, and capacitor C 101 is parallel to voltage stabilizing didoe ZD101 two ends.
Described output voltage is adjusted circuit and is comprised three end adjustable voltage a reference source IC101,1 pin of described IC101 connects diode cathode in the optocoupler, 2 pin ground connection, 3 pin are by resistance R 111 ground connection, and 3 pin meet positive source+V0, connect triode Q103 collector electrode by resistance R 110 by resistance R 112 simultaneously; Be connected to capacitor C 102 between 1 pin of IC101 and 3 pin, 1 pin also meets positive source+V0 by resistance R 114, R113 simultaneously; Diode anode is connected with resistance R 114, R113 intersection point in the described optocoupler.
Another kind of concrete scheme is:
Described decoding circuit comprises operational amplifier IC201A, IC201B, resistance R 201-R205 and diode D201; Described IC201A, IC201B output connect triode Q201, Q202 base stage by resistance respectively, and IC201A input, IC201B reverse input end in the same way all is connected with code signal line X1; Resistance R 203-R205 is series between circuit output end of pressure-stabilizing and the ground, and IC201A reverse input end, IC201B input in the same way are connected to resistance R 204 two ends respectively.
Described ON-OFF control circuit comprises triode Q201, the Q202 of emitter grounding; Described triode Q201, Q202 base stage are all by grounding through resistance, and collector electrode all connects 3 pin that output voltage is adjusted three end adjustable voltage a reference source IC202 in the circuit by resistance.
Described voltage-stabilized power supply circuit comprises voltage stabilizing didoe ZD201 and the resistance R 206 that is series between positive source+V0 and the ground, and capacitor C 201 is parallel to voltage stabilizing didoe ZD201 two ends.
Described output voltage is adjusted circuit and is comprised three end adjustable voltage a reference source IC202,1 pin of described IC202 connects diode cathode in the optocoupler, 2 pin ground connection, 3 pin are by resistance R 213 ground connection, and 3 pin meet positive source+V0, connect triode Q202 collector electrode by resistance R 212 by resistance R 214 simultaneously; Be connected to capacitor C 202 between 1 pin of IC202 and 3 pin, 1 pin also meets positive source+V0 by resistance R 216, R215 simultaneously; Diode anode is connected with resistance R 216, R215 intersection point in the described optocoupler.
The third concrete scheme is:
Described voltage-stabilized power supply circuit comprises three terminal regulator IC304 and capacitor C 301;
Described output voltage is adjusted circuit and is comprised three end adjustable voltage a reference source IC303, and 1 pin of described IC303 connects diode cathode in the optocoupler, 2 pin ground connection, and 3 pin are by resistance R 345 ground connection, and 3 pin meet positive source+V0 by resistance R 346 simultaneously; Be connected to capacitor C 302 between 1 pin of IC303 and 3 pin, 1 pin also meets positive source+V0 by resistance R 348, R347 simultaneously; Diode anode is connected with resistance R 348, R347 intersection point in the described optocoupler;
Described decoding circuit comprises code identification part and decoding part; Described code identification partly comprises operational amplifier IC301, IC302, diode D301-D306 and resistance R 301-R312, and described decoding part branch comprises diode D307-D322; Described operational amplifier IC301A in the same way input IC301B reverse input end, IC301C in the same way input, IC301D reverse input end all connect code device signal line X1, IC302A in the same way input, IC302B reverse input end, IC302C input, IC302D reverse input end all connect code device signal line X2 in the same way; Resistance R 303-R305 is series at successively between output end of stabilized voltage supply and the ground this voltage is divided into two-stage, IC301A reverse input end, IC301B input in the same way are connected in the high voltage level simultaneously, and IC301C reverse input end, IC301D input in the same way are connected in undervoltage level; Resistance R 309-R311 is series at successively between output end of stabilized voltage supply and the ground this voltage is divided into two-stage, IC302A reverse input end, IC302B input in the same way are connected in the high voltage level simultaneously, and IC302C reverse input end, IC302D input in the same way are connected in undervoltage level; Described each amplifier out connects the decoding part that diode is formed respectively.
Described ON-OFF control circuit comprises (M
n-1) individual triode, the all direct ground connection of described triode emitter-base bandgap grading, base stage all connect 3 pin that output voltage is adjusted three end adjustable voltage a reference sources in the circuit by resistance by grounding through resistance, collector electrode, and the base stage of each triode also connects each output of decoding circuit by resistance respectively simultaneously;
Wherein, n is the line number of code signal line, gets 2 here, and M is the optional status number of code signal line, gets 3 here.
With respect to prior art, the beneficial effect of circuit of the present invention is:
1), circuit application of the present invention is in Switching Power Supply, the connector of the different size that connects by the Switching Power Supply output changes the output voltage of power supply, the output voltage that makes Switching Power Supply is fully in the setting voltage scope, accurately and reliably, effectively avoided available technology adopting adjustable resistor and band switch to regulate the Switching Power Supply of output voltage because of the uncertain harm that causes to subscriber equipment of output voltage;
2), simultaneously, described power circuit adopts ternary coded system, makes full use of limited code signal line, is realizing under the prerequisite of identical function like this, and the holding wire that uses than the binary coding system of routine reduces, and reduces cost simplified design;
3), described power circuit in concrete enforcement, realize ternary coding, decoding, voltage-regulation etc. cleverly, used components and parts are few, circuit is succinctly practical, cost is low.
Description of drawings
Fig. 1 is a function theory of constitution schematic block diagram of the present invention;
Fig. 2 is the first kind encoding state schematic diagram of described out connector in-line coding unit when the code signal line has only 1;
Fig. 3 is the second kind encoding state schematic diagram of described out connector in-line coding unit when the code signal line has only 1;
Fig. 4 is described out connector in-line coding unit the third encoding state schematic diagram when the code signal line has only 1;
Fig. 5 is the schematic diagram of described out connector in-line coding unit when the code signal line has 2;
Fig. 6 is the programmable first kind of simplest circuit schematic diagram of the realization output voltage of out connector in-line coding of the present invention unit when the code signal line has only 1;
Fig. 7 be out connector in-line coding of the present invention unit when the code signal line has only 1 second kind realize the programmable circuit theory diagrams of output voltage;
Fig. 8 is the programmable simplest circuit schematic diagram of the realization output voltage of out connector in-line coding of the present invention unit when the code signal line has 2.
Embodiment
For the ease of those skilled in the art will recognize that the present invention is described in further detail below in conjunction with specific embodiment and accompanying drawing.
As shown in Figure 1, the control unit that circuit of the present invention comprises direct current out connector unit and is connected with connector unit by plugs and sockets, described control unit comprise and are used for decoding circuit that the connector internal signal wire is encoded and discerned, be used for providing the voltage-stabilized power supply circuit of working power to decoding circuit, be connected the output voltage of switch power source output voltage being regulated by photoelectrical coupler with photoelectrical coupler and adjust circuit, be connected the ON-OFF control circuit that is subjected to decoding circuit signal triggering and then control output voltage to adjust the output intensity of circuit with output voltage regulation circuit.
Fig. 2-Fig. 4 is respectively the three kind encoding state schematic diagrames of described out connector in-line coding unit when the code signal line has only 1, promptly is respectively the connected mode of high level state (being connected with+V0), vacant state, low level state (ground connection).Fig. 5 is the schematic diagram of described out connector in-line coding unit when the code signal line has 2.Two figure are all short and sweet, and this repeats no more again.
Be the programmable first kind of simplest circuit schematic diagram of the realization output voltage of out connector in-line coding unit when the code signal line has only 1 of circuit of the present invention as shown in Figure 6, promptly with each funtion part in the control circuit theory diagram in first kind of physical circuit realization accompanying drawing 1.
When the code signal line X1 of the direct current out connector of Switching Power Supply when shown in Fig. 2-4, connecting, when programme in advance agree as follows: X1 and output plus terminal+Vo short circuit, corresponding output voltage is V1; When X1 and output LOW voltage position GND short circuit, corresponding output voltage is V2; X1 is unsettled when not connecing other end points, and corresponding output voltage is V3.
Among Fig. 6, triode Q101, Q102, Q103, resistance R 102, R103, R104, R105, R106, R108, R109 and diode D101 form decoding circuit; Q102, Q103 form ON-OFF control circuit; Resistance R 101, voltage stabilizing didoe ZD101 and capacitor C 101 are formed voltage-stabilized power supply circuit; Resistance R 107, R110, R111, R112, R113, R114, capacitor C 102 and three end adjustable voltage a reference source IC101 (TL431) form output voltage and adjust circuit.
Code signal line X1 is connected to the decoding circuit of power supply inside through patchplug socket shown in the accompanying drawing 1 and output connecting line, when X1 is unsettled, the burning voltage of voltage-stabilized power supply circuit is through R102, D101 is added on the X1 line, this voltage is through R103, R104 makes the Q101 saturation conduction, then triode Q102 can not conducting, simultaneously, voltage is through R108 on the X1 line, deficiency behind the R109 is so that the Q103 saturation conduction, this moment, the control pin input of IC101 was through R112 and resistance R 111 voltage after partial, the output signal of IC101 feeds back to elementary PWM controller through photoelectrical coupler OPTOISO, adjust duty cycle of switching, make output voltage be adjusted into the minimum output voltage V3 of Switching Power Supply.When X1 is connected with output plus terminal+Vo, holding wire X1 powers on and presses liter, triode Q103 saturation conduction, then triode Q102 disconnects because of triode Q101 saturation conduction, and resistance R 110 and R111 are in state in parallel like this, and the control pin input of IC101 reduces, the electric current that flows through IC101 reduces, this electric current feeds back to elementary PWM controller through photoelectrical coupler OPTOISO, adjusts duty cycle of switching and increases, and output voltage rises to V1.When X1 was connected with output electronegative potential GND weak point, triode Q101, Q103 all disconnected, and triode Q102 saturation conduction, then resistance R 111 and R107 parallel connection, output voltage is adjusted to voltage V2.The output voltage of below just having finished Switching Power Supply changes the course of work of output voltage by the connection status of the coding unit of different direct current out connector inside.
Be the second kind realization output voltage programmable circuit theory diagrams of out connector in-line coding unit when the code signal line has only 1 of circuit of the present invention as shown in Figure 7, promptly with each funtion part in the control circuit theory diagram in second kind of physical circuit realization accompanying drawing 1.
Different with first kind of physical circuit is that decoding circuit is finished by operational amplifier IC201.Voltage stabilizing didoe ZD201, capacitor C 201 and resistance R 206 are formed voltage-stabilized power supply circuit; Resistance R 201, R202, R203, R204, R205, operational amplifier IC201A, IC201B, diode D201 forms decoding circuit; Resistance R 207, R208, R210, R211 and triode Q201, Q202 form ON-OFF control circuit; Resistance R 209, R212, R213, R214, R215, R216, capacitor C 202 and three end adjustable voltage a reference source IC202 (TL431) etc. form output voltage and adjust circuit.
The principle of circuit working shown in Fig. 7 is: when the code signal line X1 of the direct current out connector of Switching Power Supply when shown in Fig. 2-4, connecting, when programme in advance still agree as follows: X1 and output plus terminal+Vo short circuit, corresponding output voltage is V1; When X1 and output LOW voltage position GND short circuit, corresponding output voltage is V2; X1 is unsettled when not connecing other end points, and corresponding output voltage is V3.
When X1 is unsettled, the burning voltage of voltage-stabilized power supply circuit by resistance R 201, R202 dividing potential drop after diode D201 be added on the X1 line, operational amplifier IC201A, IC201B output all is low level, then triode Q201, Q202 all disconnect, therefore the output voltage of Switching Power Supply is set by resistance R 214, R213, is minimum output voltage V3.When X1 and positive voltage+Vo short circuit, holding wire X1 voltage rises, IC201A exports high level, the IC201B output low level, then triode Q201 disconnects and the Q202 saturation conduction, switch power source output voltage is to be set by the parallel resistance value of resistance R 214, R213, R212, i.e. maximum output voltage V1.When X1 and GND short circuit, IC201B exports high level, and the IC201A output low level, triode Q202 disconnects and the Q201 saturation conduction, and the output voltage of Switching Power Supply is to be set by the parallel resistance value of resistance R 214, R213, R209, and promptly output voltage V 2.The output voltage of below just having finished Switching Power Supply changes the course of work of output voltage by the connection status of the coding unit of different direct current out connector inside.
As Fig. 8 is the programmable simplest circuit schematic diagram of the realization output voltage of out connector in-line coding unit when the code signal line has 2 of circuit of the present invention, promptly with each funtion part in the control circuit theory diagram in the third physical circuit realization accompanying drawing 1.
Form voltage-stabilized power supply circuit by three terminal regulator IC304 and capacitor C 301 among Fig. 8; Resistance R 301, R302, R303, R304, R305, R306, R307, R308, R309, R310, R311, R312, the code identification part in operational amplifier IC301, IC302 and diode D301, D302, D303, D304, D305, the D306 decoding circuit; Diode D307, D308, D309, D310, D311, D312, D313, D314, D315, D316, D317, D318, D319, D320, D321, D322 form the ranks matrix decoding part of 3 row, 3 row; Resistance R 313, R314, R315, R316, R317, R318, R319, R320, R321, R322, R323, R324, R325, R326, R327, R328, R329, R330, R331, R332, R333, R334, R335, R336 and triode Q301, Q302, Q303, Q304, Q305, Q306, Q307, Q308 form ON-OFF control circuit; Resistance R 337, R338, R339, R340, R341, R342, R343, R344, R345, R346, R347, R348, capacitor C 302 and three end adjustable voltage a reference source IC303 (TL431) etc. form output voltage and adjust circuit.
The operation principle of circuit shown in Figure 8 is: when code signal line X1, the X2 of the direct current out connector of Switching Power Supply when connecting as shown in Figure 5, the connection status of X1, the every single line of X2 also image pattern 2-4 equally has three state, and programming agreement in advance sees Table 1 output voltage hurdle and the corresponding relation of code signal line X1, X2.
A1 among code identification in the table 1 output A is the output of operational amplifier IC302D, the output of the window comparator that A2 is made up of operational amplifier IC302B, IC302C, and A3 is the output of operational amplifier IC302A; B1 among the code identification output B is the output of operational amplifier IC301D, the output of the window comparator that B2 is made up of operational amplifier IC301B, IC301C, and B3 is the output of operational amplifier IC301A.8 output ports of the ranks decoder that decoding in the table 1 output D1, D2, D3, D4, D5, D6, D7, D8 are made up of 16 diodes such as D307-D322, these are exported to receive respectively and shown in Figure 6 form ON-OFF control circuit by triode Q301, Q302, Q303, Q304, Q305, Q306, Q307, Q308 and get ports such as input D1, D2, D3, D4, D5, D6, D7, D8.As can be seen from Table 1, decoding output D1, D2, D3, D4, D5, D6, D7, D8 is removing code signal line X1, X2 has only wherein when unsettled 1 output is high level, other output all is low level, make the switch of ON-OFF control circuit remove code signal line X1, X2 has only wherein when unsettled 1 switch is conducting, therefore, output voltage is just by resistance R 346, resistance R 345 and R337, R338, R339, R340, R341, R342, R343, R344 in parallel respectively the voltage determined of equivalent resistance, promptly corresponding output voltage V 2, V3, V4, V5, V6, V7, V8, V9, and as code signal line X1, when X2 is unsettled, though A2 and B2 are high level, but the decoding circuit part is not deciphered, therefore all decoding outputs all are low levels, all not conductings of variable connector, output voltage are exactly the minimum output voltage V1 of the definite Switching Power Supply of resistance R 345 and R346.Below just realized the programmable course of work of the output voltage of out connector in-line coding unit when the code signal line has 2.
The input/output state table of each point among table 1, Fig. 8
Annotate: go up " low " expression low level in the table, " height " expression high level, " GND " presentation code holding wire ground connection, "+Vo " presentation code holding wire connects output plus terminal, what end points " unsettled " presentation code holding wire does not take over, the different output voltage of " V1-V9 " expression, wherein the V1 magnitude of voltage is minimum.
Above circuit can continue to be generalized to the situation that three or more holding wires are arranged in the in-line coding unit of direct current out connector; the embodiment circuit that those skilled in the art provides in can be according to the present invention continues to extend design, and this also belongs to invention which is intended to be protected certainly.
Need to prove; above-mentioned execution mode only is the preferable embodiment of the present invention; it can not be interpreted as limiting the scope of the invention, conceive under the prerequisite not breaking away from the present invention that any impartial the variation with modifying all belonged to protection scope of the present invention to the present invention does.
Claims (9)
- But 1, a kind of power circuit of automatically converting voltage comprises the direct current out connector and is connected to the control unit of direct current out connector by plugs and sockets, it is characterized in that described control unit comprises:Decoding circuit is used for the coding of connector in-line coding unit is discerned decoding;Voltage-stabilized power supply circuit is connected with decoding circuit, is used for providing working power to decoding circuit;Output voltage is adjusted circuit, is connected with photoelectrical coupler, by photoelectrical coupler switch power source output voltage is regulated;ON-OFF control circuit is connected with output voltage regulation circuit, and it is subjected to triggering of decoding circuit output signal and then control output voltage to adjust the output intensity of circuit.
- But 2, the power circuit of automatically converting voltage according to claim 1 is characterized in that:Described direct current out connector adopts ternary coded system to encode, and coding adds up to 3 nIndividual, wherein n is for transmitting the minimum line number of code signal line.
- But 3, the power circuit of automatically converting voltage according to claim 2 is characterized in that:Described decoding circuit comprises triode Q101, Q102, Q103, resistance R 102-R106, R108, R109 and the diode D101 of the equal ground connection of emitter-base bandgap grading; Triode Q102, Q103 are also as ON-OFF control circuit simultaneously; Triode Q101 base stage is passed through resistance R 104 ground connection, and meets code signal line X1, collector connecting transistor Q102 base stage by resistance R 103; Triode Q102 base stage is passed through resistance R 106 ground connection, and connects voltage stabilizing circuit by resistance R 105, and collector electrode connects output voltage by resistance R 107 and adjusts circuit; Triode Q103 base stage is passed through resistance R 109 ground connection, and meets code signal line X1 by resistance R 108, and collector electrode connects output voltage by resistance and adjusts circuit.
- But 4, the power circuit of automatically converting voltage according to claim 3 is characterized in that:Voltage stabilizing didoe ZD101, resistance R 101 are serially connected with between positive source+V0 and the ground in the described voltage-stabilized power supply circuit, and capacitor C 101 is parallel to voltage stabilizing didoe ZD101 two ends.
- But 5, the power circuit of automatically converting voltage according to claim 4 is characterized in that:Described output voltage is adjusted circuit and is comprised three end adjustable voltage a reference source IC101, anode 1 pin of described IC101 connects light-emitting diodes tube cathode in the optocoupler, negative electrode 2 pin ground connection, reference edge 3 pin are by resistance R 111 ground connection, and 3 pin meet positive source+V0, connect triode Q103 collector electrode by resistance R 110 by resistance R 112 simultaneously; Be connected to capacitor C 102 between 1 pin of IC101 and 3 pin, 1 pin also meets positive source+V0 by resistance R 114, R113 simultaneously; The light-emitting diodes tube anode is connected with resistance R 114, R113 intersection point in the described optocoupler.
- But 6, the power circuit of automatically converting voltage according to claim 2 is characterized in that:Described decoding circuit comprises operational amplifier IC201A, IC201B, resistance R 201-R205 and diode D201; Described IC201A, IC201B output connect triode Q201, Q202 base stage by resistance respectively, and IC201A input, IC201B reverse input end in the same way all is connected with code signal line X1; Resistance R 203-R205 is series between circuit output end of pressure-stabilizing and the ground, and IC201A reverse input end, IC201B input in the same way are connected to resistance R 204 two ends respectively;Described ON-OFF control circuit comprises triode Q201, the Q202 of emitter grounding; Described triode Q201, Q202 base stage are all by grounding through resistance, and collector electrode all connects 3 pin (Ref pin) that output voltage is adjusted three end adjustable voltage a reference source IC202 in the circuit by resistance.
- But 7, the power circuit of automatically converting voltage according to claim 6 is characterized in that:Described voltage-stabilized power supply circuit comprises voltage stabilizing didoe ZD201 and the resistance R 206 that is series between positive source+V0 and the ground, and capacitor C 201 is parallel to voltage stabilizing didoe ZD201 two ends.
- But 8, the power circuit of automatically converting voltage according to claim 7 is characterized in that:Described output voltage is adjusted circuit and is comprised three end adjustable voltage a reference source IC202,1 pin of described IC202 connects light-emitting diodes tube cathode in the optocoupler, 2 pin ground connection, 3 pin are by resistance R 213 ground connection, and 3 pin meet positive source+V0, connect triode Q202 collector electrode by resistance R 212 by resistance R 214 simultaneously; Be connected to capacitor C 202 between 1 pin of IC202 and 3 pin, 1 pin also meets positive source+V0 by resistance R 216, R215 simultaneously; The light-emitting diodes tube anode is connected with resistance R 216, R215 intersection point in the described optocoupler.
- But 9, the power circuit of automatically converting voltage according to claim 2 is characterized in that:Described voltage-stabilized power supply circuit comprises three terminal regulator IC304 and capacitor C 301;Described output voltage is adjusted circuit and is comprised three end adjustable voltage a reference source IC303, and 1 pin of described IC303 connects light-emitting diodes tube cathode in the optocoupler, 2 pin ground connection, and 3 pin are by resistance R 345 ground connection, and 3 pin meet positive source+V0 by resistance R 346 simultaneously; Be connected to capacitor C 302 between 1 pin of IC303 and 3 pin, 1 pin also meets positive source+V0 by resistance R 348, R347 simultaneously; Diode anode is connected with resistance R 348, R347 intersection point in the described optocoupler;Described decoding circuit comprises code identification part and decoding part; Described code identification partly comprises operational amplifier IC301, IC302, diode D301-D306 and resistance R 301-R312, and described decoding part branch comprises diode D307-D322; Described operational amplifier IC301A in the same way input IC301B reverse input end, IC301C in the same way input, IC301D reverse input end all connect code device signal line X1, IC302A in the same way input, IC302B reverse input end, IC302C input, IC302D reverse input end all connect code device signal line X2 in the same way; Resistance R 303-R305 is series at successively between output end of stabilized voltage supply and the ground this voltage is divided into two-stage, IC301A reverse input end, IC301B input in the same way are connected in the high voltage level simultaneously, and IC301C reverse input end, IC301D input in the same way are connected in undervoltage level; Resistance R 309-R311 is series at successively between output end of stabilized voltage supply and the ground this voltage is divided into two-stage, IC302A reverse input end, IC302B input in the same way are connected in the high voltage level simultaneously, and IC302C reverse input end, IC302D input in the same way are connected in undervoltage level; Described each amplifier out connects the decoding part that diode is formed respectively.Described ON-OFF control circuit comprises (M n-1) individual triode, described triode emitter-base bandgap grading all directly ground connection, base stage all by grounding through resistance, collector electrode all by resistance connect output voltage adjust three end adjustable voltage a reference sources in the circuit 3 pin, the base stage of each triode also connects each output of decoding circuit by resistance respectively simultaneously;Wherein, n is the line number of code signal line, gets 2 here, and M is the optional status number of code signal line, gets 3 here.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102570575A (en) * | 2012-02-15 | 2012-07-11 | 飞毛腿(福建)电子有限公司 | Portable backup power supply with automatic output voltage and current identification function |
| CN104283416A (en) * | 2013-07-05 | 2015-01-14 | 汕头市易普联科技有限公司 | Self-adaptation power supply system and power supply method thereof |
| CN106250585A (en) * | 2016-07-18 | 2016-12-21 | 上海佳革智能科技有限公司 | A kind of mold code and signal processing controller |
| WO2019210654A1 (en) * | 2018-05-03 | 2019-11-07 | 郑州云海信息技术有限公司 | System and method for regulating output voltage of switching power supply of server |
-
2009
- 2009-09-15 CN CN200910192403XA patent/CN101656471B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102570575A (en) * | 2012-02-15 | 2012-07-11 | 飞毛腿(福建)电子有限公司 | Portable backup power supply with automatic output voltage and current identification function |
| CN104283416A (en) * | 2013-07-05 | 2015-01-14 | 汕头市易普联科技有限公司 | Self-adaptation power supply system and power supply method thereof |
| CN104283416B (en) * | 2013-07-05 | 2017-02-08 | 汕头市易普联科技有限公司 | Self-adaptation power supply system and power supply method thereof |
| CN106250585A (en) * | 2016-07-18 | 2016-12-21 | 上海佳革智能科技有限公司 | A kind of mold code and signal processing controller |
| CN106250585B (en) * | 2016-07-18 | 2019-09-20 | 上海佳革智能科技有限公司 | A kind of mold code and signal processing controller |
| WO2019210654A1 (en) * | 2018-05-03 | 2019-11-07 | 郑州云海信息技术有限公司 | System and method for regulating output voltage of switching power supply of server |
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| Publication number | Publication date |
|---|---|
| CN101656471B (en) | 2012-08-08 |
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