CN101651412A - Method of converting single power to dual power, voltage follower, virtual ground and pseudo ground generator, and DC regulated power - Google Patents
Method of converting single power to dual power, voltage follower, virtual ground and pseudo ground generator, and DC regulated power Download PDFInfo
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Abstract
本发明涉及单电源转为双电源的方法与电压跟随器和虚地伪地生成器及直流稳压电源，属自动控制、电源技术与电子设备领域。跨接在单电源的二个电源线之间二个串联电阻的公共端作为虚地Sgnd，经驱动生成伪地Pgnd，与单电源的二个电源线构成三线制的正负双电源系统。限流型电压跟随器由运放与电阻构成，而虚地伪地生成器由限流型电压跟随器与电阻构成，单输入双输出直流稳压电源由稳压集成电路、限流型电压跟随器或虚地伪地生成器、阻容等组成。本发明仅采用半导体器件与阻容元件构成，结构简单可靠、成本低廉、体积小、适用性强，在自控系统、电子电路与电子仪器设备等方面有广泛的应用价值。
The invention relates to a method for converting a single power supply to a double power supply, a voltage follower, a false ground generator and a DC stabilized voltage power supply, and belongs to the fields of automatic control, power supply technology and electronic equipment. The common end of the two series resistors connected across the two power lines of the single power supply is used as the virtual ground Sgnd, which is driven to generate a pseudo ground Pgnd, and forms a three-wire positive and negative dual power supply system with the two power lines of the single power supply. The current-limiting voltage follower is composed of operational amplifiers and resistors, and the virtual ground and pseudo-ground generators are composed of current-limiting voltage followers and resistors. device or false ground generator, resistance and capacitance and so on. The invention is only composed of semiconductor devices and resistance-capacitance elements, and has simple and reliable structure, low cost, small volume and strong applicability, and has wide application value in automatic control systems, electronic circuits and electronic instruments and equipment.
Description
Technical field
The present invention relates to method and voltage follower and virtual earth pseudo-ground maker and D.C. regulated power supply that single supply transfers duplicate supply to, full name is: single supply transfers method and current-limiting type voltage follower and virtual earth pseudo-ground maker and single input dual output D.C. regulated power supply of duplicate supply to, belongs to control automatically, power technology and electronic device field.
Background technology
Power supply is as the part in a self-contained unit or the electronic equipment in electronics, acts on extremely importantly, and its cost also occupies the sizable ratio of equipment total cost.
D.C. regulated power supply is comparatively general with single supply usually, and Analogical Electronics often needs the potential reference ground that mediates as the common current potential benchmark of analog, more general situation is that Analogical Electronics needs the negative and positive dual power power supply, and this just needs the conversion of a single supply to duplicate supply.
Single input dual output D.C. regulated power supply is the D.C. regulated power supply of the negative and positive dual power output of single power supply, and single supply has to the realization of duplicate supply conversion is common: modes such as simple capacitance-resistance dividing potential drop (resistance with electric capacity parallel connection then connect again) generation common reference level, Switching Power Supply generation negative voltage formation duplicate supply.
The duplicate supply that the method that adopts single supply to add the capacitance-resistance dividing potential drop obtains is simple and convenient, cost is low, and the dividing potential drop that is produced can only be used as the reference level usually, and the fan-out capability of its electric current or power is very poor.
Produce the duplicate supply that negative voltage obtains by Switching Power Supply, its load driving ability is stronger, but circuit structure is comparatively complicated, cost is higher relatively.
Summary of the invention
The purpose of this invention is to provide method and voltage follower and virtual earth pseudo-ground maker and D.C. regulated power supply that single supply transfers duplicate supply to.
The objective of the invention is to realize by following proposal.
A kind of single supply transfers the method for duplicate supply to, transfers the single supply of two-wire system the negative and positive dual power of three-wire system to, it is characterized in that: be connected across between two power lines of single supply after two resistance series connection, its common port is as virtual earth Sgnd; And virtual earth Sgnd drives pseudo-ground of generation Pgnd through voltage follower, difference cross-over connection electric capacity between two power lines of pseudo-ground Pgnd and single supply, and two power lines of pseudo-ground Pgnd and single supply constitute the positive-negative dual power supply system of three-wire systems; During application, its virtual earth Sgnd of system that a plurality of homology single supplies transfer negative and positive dual power to links together and forms a big system, and its pseudo-ground Pgnd of system that a plurality of separate single power supplys transfer negative and positive dual power to links together and forms a big system.
The structured flowchart that single supply transfers the duplicate supply method to as shown in Figure 1.
A kind of current-limiting type voltage follower, it is positive power source terminal+Vx and negative power end-Vx, voltage input end Ui, a voltage output end Uo that two power ends are arranged; It is characterized in that: the current-limiting type voltage follower is made up of operational amplifier A 0 and resistance R 0, resistance R 0 is connected across between the output and inverting input of amplifier A0, the in-phase input end of amplifier A0 meets the input Ui into follower, the inverting input of amplifier A0 meets the output Uo into follower, and the positive-negative power termination of amplifier A0 is the positive-negative power end+Vx and-Vx of follower.
The output of its amplifier of current-limiting type voltage follower A0 is through resistance R 0 output voltage, and resistance R 0 has metering function, and the output voltage of follower and input voltage are consistent in certain output current scope.The current-limiting type voltage follower structure is very simple, has good overcurrent or short-circuit protection function.
The circuit theory diagrams of current-limiting type voltage follower as shown in Figure 2.
Pseudo-ground of a kind of virtual earth that adopts current-limiting type voltage follower maker, have two power ends be positive power source terminal+Vx and negative power end-Vx, virtual earth end Sgnd, one hold Pgnd pseudo-ly; It is characterized in that: pseudo-ground of virtual earth maker is made up of current-limiting type voltage follower, resistance R 1 and R2, resistance R 1 is connected across between the input Ui and positive power source terminal+Vx of follower, resistance R 2 is connected across between the input Ui and negative power end-Vx of follower, the input Ui of follower meets the virtual earth end Sgnd into maker, the output Uo of follower connect for maker hold Pgnd pseudo-ly, the positive-negative power termination of follower is the positive-negative power end+Vx and-Vx of maker.
Resistance R 1 and R2 and current-limiting type voltage follower constitute pseudo-ground of virtual earth maker, produce required virtual earth Sgnd of power-supply system and pseudo-ground Pgnd.
The structured flowchart of pseudo-ground of virtual earth maker and circuit theory diagrams are shown in Fig. 3 a, Fig. 3 b.
A kind of output voltage fixed list input dual output D.C. regulated power supply that adopts single supply to transfer duplicate supply method and current-limiting type voltage follower or pseudo-ground of virtual earth maker to has that two power inputs are positive supply input+Pv and negative supply input-Pv, virtual earth end Sgnd, one to hold Pgnd, two power output ends be positive supply output+Vp and negative supply output-Vp pseudo-ly; It is characterized in that: output voltage fixed list input dual output D.C. regulated power supply comprises circuit of three-terminal voltage-stabilizing integrated, pseudo-ground of current-limiting type voltage follower or virtual earth maker, D.C. regulated power supply is imported single power supply, insert the circuit of three-terminal voltage-stabilizing integrated input, the output termination of circuit of three-terminal voltage-stabilizing integrated is the output of D.C. regulated power supply, realize the voltage stabilizing output of power supply by circuit of three-terminal voltage-stabilizing integrated, and the maker cross-over connection of pseudo-ground of current-limiting type voltage follower or virtual earth is between positive and negative input power supply or positive and negative out-put supply, produce the reference voltage between positive negative output voltage as ground connection, realize the function and the negative and positive dual power output function on virtual earth and pseudo-ground.
Output voltage fixed list input dual output D.C. regulated power supply scheme one, described output voltage fixed list input dual output D.C. regulated power supply, it is characterized in that: output voltage fixed list input dual output D.C. regulated power supply is by positive circuit of three-terminal voltage-stabilizing integrated P1, the current-limiting type voltage follower, capacitor C 0 and C1 and C2, resistance R 1 and R2 form, input-the Pv of D.C. regulated power supply is connected with the earth terminal GND of integrated regulator P1 with output-Vp simultaneously, the voltage input end Ui of integrated regulator P1 and output Uo meet input+Pv and the output+Vp into D.C. regulated power supply respectively, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, the input Ui of voltage follower and output Uo connect respectively and are the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, input+Pv that the positive-negative power end+Vx of voltage follower and-Vx connect D.C. regulated power supply respectively and-Pv, resistance R 1, R2 is connected across the output+Vp of D.C. regulated power supply respectively, between-Vp and the virtual earth end Sgnd, capacitor C 1, C2 is connected across the output+Vp of D.C. regulated power supply respectively,-Vp and pseudo-the end between the Pgnd.
Adopt the output voltage fixed list of the brief structure of positive circuit of three-terminal voltage-stabilizing integrated and current-limiting type voltage follower to import dual output D.C. regulated power supply structure principle chart shown in Fig. 4 a.
Output voltage fixed list input dual output D.C. regulated power supply scheme two, described output voltage fixed list input dual output D.C. regulated power supply, it is characterized in that: output voltage fixed list input dual output D.C. regulated power supply is by positive circuit of three-terminal voltage-stabilizing integrated P1, pseudo-ground of virtual earth maker, capacitor C 0 and C1 and C2 form, input-the Pv of D.C. regulated power supply is connected with the earth terminal GND of integrated regulator P1 with output-Vp simultaneously, the voltage input end Ui of integrated regulator P1 and output Uo meet input+Pv and the output+Vp into D.C. regulated power supply respectively, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, the virtual earth end Sgnd of maker and pseudo-hold Pgnd to connect respectively to be the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, output+Vp that the positive-negative power end+Vx of maker and-Vx connect D.C. regulated power supply respectively and-Vp, capacitor C 1, C2 is connected across the output+Vp of D.C. regulated power supply respectively,-Vp and pseudo-the end between the Pgnd.
Adopt the output voltage fixed list of the brief structure of pseudo-ground of positive circuit of three-terminal voltage-stabilizing integrated and virtual earth maker to import dual output D.C. regulated power supply structure principle chart shown in Fig. 4 b.
Output voltage fixed list input dual output D.C. regulated power supply scheme three, described output voltage fixed list input dual output D.C. regulated power supply, it is characterized in that: output voltage fixed list input dual output D.C. regulated power supply is by negative circuit of three-terminal voltage-stabilizing integrated P1, the current-limiting type voltage follower, capacitor C 0 and C1 and C2, resistance R 1 and R2 form, input+the Pv of D.C. regulated power supply is connected with the earth terminal GND of integrated regulator P1 with output+Vp simultaneously, the voltage input end Ui of integrated regulator P1 and output Uo meet input-Pv and the output-Vp into D.C. regulated power supply respectively, capacitor C 0 be connected across D.C. regulated power supply input-Pv and+Pv between, the input Ui of voltage follower and output Uo connect respectively and are the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, input+Pv that the positive-negative power end+Vx of voltage follower and-Vx connect D.C. regulated power supply respectively and-Pv, resistance R 1, R2 is connected across the output-Vp of D.C. regulated power supply respectively, between+Vp and the virtual earth end Sgnd, capacitor C 1, C2 is connected across the output-Vp of D.C. regulated power supply respectively, + Vp and pseudo-the end between the Pgnd.
Adopt the output voltage fixed list of the brief structure of negative circuit of three-terminal voltage-stabilizing integrated and current-limiting type voltage follower to import dual output D.C. regulated power supply structure principle chart shown in Fig. 5 a.
Output voltage fixed list input dual output D.C. regulated power supply scheme four, described output voltage fixed list input dual output D.C. regulated power supply, it is characterized in that: output voltage fixed list input dual output D.C. regulated power supply is by negative circuit of three-terminal voltage-stabilizing integrated P1, pseudo-ground of virtual earth maker, capacitor C 0 and C1 and C2 form, input+the Pv of D.C. regulated power supply is connected with the earth terminal GND of integrated regulator P1 with output+Vp simultaneously, the voltage input end Ui of integrated regulator P1 and output Uo meet input-Pv and the output-Vp into D.C. regulated power supply respectively, capacitor C 0 be connected across D.C. regulated power supply input-Pv and+Pv between, the virtual earth end Sgnd of maker and pseudo-hold Pgnd to connect respectively to be the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, output+Vp that the positive-negative power end+Vx of maker and-Vx connect D.C. regulated power supply respectively and-Vp, capacitor C 1, C2 is connected across the output-Vp of D.C. regulated power supply respectively, + Vp and pseudo-the end between the Pgnd.
Adopt the output voltage fixed list of the brief structure of negative circuit of three-terminal voltage-stabilizing integrated and pseudo-ground of virtual earth maker to import dual output D.C. regulated power supply structure principle chart shown in Fig. 5 b.
Output voltage fixed list input dual output D.C. regulated power supply scheme five, described output voltage fixed list input dual output D.C. regulated power supply, it is characterized in that: output voltage fixed list input dual output D.C. regulated power supply is by positive circuit of three-terminal voltage-stabilizing integrated P1, negative circuit of three-terminal voltage-stabilizing integrated P2, pseudo-ground of virtual earth maker, capacitor C 0 and C1 and C2 form, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, the virtual earth end Sgnd of maker and pseudo-hold Pgnd to connect respectively to be the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, input+Pv that the positive-negative power end+Vx of maker and-Vx connect D.C. regulated power supply respectively and-Pv, the voltage input end Ui of integrated regulator P1 and output Uo meet input+Pv and the output+Vp into D.C. regulated power supply respectively, the voltage input end Ui of integrated regulator P2 and output Uo meet input-Pv and the output-Vp into D.C. regulated power supply respectively, what the earth terminal GND of integrated regulator P1 and P2 connect D.C. regulated power supply holds Pgnd, capacitor C 1 pseudo-ly, C2 is connected across the output+Vp of D.C. regulated power supply respectively,-Vp and pseudo-the end between the Pgnd.
The output voltage fixed list input dual output D.C. regulated power supply structure principle chart of symmetrical structure as shown in Figure 6.
A kind of Adjustable Output Voltage type list input dual output D.C. regulated power supply that adopts single supply to transfer duplicate supply method and current-limiting type voltage follower or pseudo-ground of virtual earth maker to has that two power inputs are positive supply input+Pv and negative supply input-Pv, virtual earth end Sgnd, one to hold Pgnd, two power output ends be positive supply output+Vp and negative supply output-Vp pseudo-ly; It is characterized in that: Adjustable Output Voltage type list input dual output D.C. regulated power supply comprises adjustable integrated regulator, pseudo-ground of current-limiting type voltage follower or virtual earth maker, potentiometer, resistance, electric capacity, D.C. regulated power supply is imported single power supply, insert adjustable integrated regulator input, the output termination of adjustable integrated regulator is the output of D.C. regulated power supply, realize the voltage stabilizing and the adjustable output of power supply by adjustable integrated regulator, and the maker cross-over connection of pseudo-ground of current-limiting type voltage follower or virtual earth is between positive and negative input power supply or positive and negative out-put supply, produce the reference voltage between positive negative output voltage as ground connection, realize the function and the negative and positive dual power output function on virtual earth and pseudo-ground.
Adjustable Output Voltage type list input dual output D.C. regulated power supply scheme one, described Adjustable Output Voltage type list input dual output D.C. regulated power supply, it is characterized in that: Adjustable Output Voltage type list input dual output D.C. regulated power supply is by just adjustable integrated regulator P1, diode D1, the current-limiting type voltage follower, resistance R 1 and R2 and R3, potentiometer Rp, capacitor C 0～C3 forms, input-the Pv of D.C. regulated power supply is connected with output-Vp, the voltage input end Ui of integrated regulator P1 and output Uo meet input+Pv and the output+Vp into D.C. regulated power supply respectively, diode D1 both positive and negative polarity is connected with voltage output end Uo and the input Ui of integrated regulator P1 respectively, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, resistance R 3 and the output+Vp that is connected across D.C. regulated power supply after the stiff end of potentiometer Rp is connected in series and-Vp between, the adjustable side of potentiometer Rp is connected with the adjustable side ADJ of integrated regulator P1, capacitor C 3 is connected across between the input-Pv of the adjustable side ADJ of integrated regulator P1 and D.C. regulated power supply, the input Ui of voltage follower and output Uo connect respectively and are the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, input+Pv that the positive-negative power end+Vx of voltage follower and-Vx connect D.C. regulated power supply respectively and-Pv, resistance R 1, R2 is connected across the output+Vp of D.C. regulated power supply respectively, between-Vp and the virtual earth end Sgnd, capacitor C 1, C2 is connected across the output+Vp of D.C. regulated power supply respectively,-Vp and pseudo-the end between the Pgnd.
Adopt the Adjustable Output Voltage type list of the brief structure of just adjustable integrated regulator and current-limiting type voltage follower to import the structure principle chart of dual output D.C. regulated power supply shown in Fig. 7 a.
Adjustable Output Voltage type list input dual output D.C. regulated power supply scheme two, described Adjustable Output Voltage type list input dual output D.C. regulated power supply, it is characterized in that: Adjustable Output Voltage type list input dual output D.C. regulated power supply is by just adjustable integrated regulator P1, diode D1, pseudo-ground of virtual earth maker, resistance R 3, potentiometer Rp, capacitor C 0～C3 forms, input-the Pv of D.C. regulated power supply is connected with output-Vp, the voltage input end Ui of integrated regulator P1 and output Uo meet input+Pv and the output+Vp into D.C. regulated power supply respectively, diode D1 both positive and negative polarity is connected with voltage output end Uo and the input Ui of integrated regulator P1 respectively, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, resistance R 3 and the output+Vp that is connected across D.C. regulated power supply after the stiff end of potentiometer Rp is connected in series and-Vp between, the adjustable side of potentiometer Rp is connected with the adjustable side ADJ of integrated regulator P1, capacitor C 3 is connected across between the input-Pv of the adjustable side ADJ of integrated regulator P1 and D.C. regulated power supply, the virtual earth end Sgnd of maker and pseudo-hold Pgnd to connect respectively to be the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, output+Vp that the positive-negative power end+Vx of maker and-Vx connect D.C. regulated power supply respectively and-Vp, capacitor C 1, C2 is connected across the output+Vp of D.C. regulated power supply respectively,-Vp and pseudo-the end between the Pgnd.
Adopt the Adjustable Output Voltage type list of the brief structure of pseudo-ground of just adjustable integrated regulator and virtual earth maker to import the structure principle chart of dual output D.C. regulated power supply shown in Fig. 7 b.
Adjustable Output Voltage type list input dual output D.C. regulated power supply scheme three, described Adjustable Output Voltage type list input dual output D.C. regulated power supply, it is characterized in that: Adjustable Output Voltage type list input dual output D.C. regulated power supply is by negative adjustable integrated regulator P1, diode D1, the current-limiting type voltage follower, resistance R 1 and R2 and R3, potentiometer Rp, capacitor C 0～C3 forms, input+the Pv of D.C. regulated power supply is connected with output+Vp, the voltage input end Ui of integrated regulator P1 and output Uo meet input-Pv and the output-Vp into D.C. regulated power supply respectively, diode D1 both positive and negative polarity is connected with voltage input end Ui and the output Uo of integrated regulator P1 respectively, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, resistance R 3 and the output-Vp that is connected across D.C. regulated power supply after the stiff end of potentiometer Rp is connected in series and+Vp between, the adjustable side of potentiometer Rp is connected with the adjustable side ADJ of integrated regulator P1, capacitor C 3 is connected across between the input+Pv of the adjustable side ADJ of integrated regulator P1 and D.C. regulated power supply, the input Ui of voltage follower and output Uo connect respectively and are the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, input+Pv that the positive-negative power end+Vx of voltage follower and-Vx connect D.C. regulated power supply respectively and-Pv, resistance R 1, R2 is connected across the output-Vp of D.C. regulated power supply respectively, between+Vp and the virtual earth end Sgnd, capacitor C 1, C2 is connected across the output-Vp of D.C. regulated power supply respectively, + Vp and pseudo-the end between the Pgnd.
Adopt the Adjustable Output Voltage type list of the brief structure of negative adjustable integrated regulator and current-limiting type voltage follower to import the structure principle chart of dual output D.C. regulated power supply shown in Fig. 8 a.
Adjustable Output Voltage type list input dual output D.C. regulated power supply scheme four, described Adjustable Output Voltage type list input dual output D.C. regulated power supply, it is characterized in that: Adjustable Output Voltage type list input dual output D.C. regulated power supply is by negative adjustable integrated regulator P1, diode D1, pseudo-ground of virtual earth maker, resistance R 3, potentiometer Rp, capacitor C 0～C3 forms, input+the Pv of D.C. regulated power supply is connected with output+Vp, the voltage input end Ui of integrated regulator P1 and output Uo meet input-Pv and the output-Vp into D.C. regulated power supply respectively, diode D1 both positive and negative polarity is connected with voltage input end Ui and the output Uo of integrated regulator P1 respectively, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, resistance R 3 and the output-Vp that is connected across D.C. regulated power supply after the stiff end of potentiometer Rp is connected in series and+Vp between, the adjustable side of potentiometer Rp is connected with the adjustable side ADJ of integrated regulator P1, capacitor C 3 is connected across between the input+Pv of the adjustable side ADJ of integrated regulator P1 and D.C. regulated power supply, the virtual earth end Sgnd of maker and pseudo-hold Pgnd to connect respectively to be the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, output+Vp that the positive-negative power end+Vx of maker and-Vx connect D.C. regulated power supply respectively and-Vp, capacitor C 1, C2 is connected across the output-Vp of D.C. regulated power supply respectively, + Vp and pseudo-the end between the Pgnd.
Adopt the Adjustable Output Voltage type list of the brief structure of negative adjustable integrated regulator and pseudo-ground of virtual earth maker to import the structure principle chart of dual output D.C. regulated power supply shown in Fig. 8 b.
Adjustable Output Voltage type list input dual output D.C. regulated power supply scheme five, described Adjustable Output Voltage type list input dual output D.C. regulated power supply, it is characterized in that: Adjustable Output Voltage type list input dual output D.C. regulated power supply is by just adjustable integrated regulator P1, negative adjustable integrated regulator P2, diode D1 and D2, pseudo-ground of virtual earth maker, resistance R 3 and R4, potentiometer Rp1 and Rp2, capacitor C 0～C4 forms, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, the virtual earth end Sgnd of maker and pseudo-hold Pgnd to connect respectively to be the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, input+Pv that the positive-negative power end+Vx of maker and-Vx connect D.C. regulated power supply respectively and-Pv, the voltage input end Ui of integrated regulator P1 and output Uo meet input+Pv and the output+Vp into D.C. regulated power supply respectively, diode D1 both positive and negative polarity is connected with voltage output end Uo and the input Ui of integrated regulator P1 respectively, resistance R 3 and the output+Vp that is connected across D.C. regulated power supply after the stiff end of potentiometer Rp1 is connected in series and pseudo-the end between the Pgnd, the adjustable side of potentiometer Rp1 is connected with the adjustable side ADJ of integrated regulator P1, capacitor C 3 is connected across the adjustable side ADJ of integrated regulator P1 and holding between the Pgnd of D.C. regulated power supply pseudo-ly, the voltage input end Ui of integrated regulator P2 and output Uo meet input-Pv and the output-Vp into D.C. regulated power supply respectively, diode D2 both positive and negative polarity is connected with voltage input end Ui and the output Uo of integrated regulator P2 respectively, resistance R 4 and the output-Vp that is connected across D.C. regulated power supply after the stiff end of potentiometer Rp2 is connected in series and pseudo-the end between the Pgnd, the adjustable side of potentiometer Rp2 is connected with the adjustable side ADJ of integrated regulator P2, capacitor C 4 is connected across the adjustable side ADJ of integrated regulator P2 and holding between the Pgnd of D.C. regulated power supply, capacitor C 1 pseudo-ly, C2 is connected across the output+Vp of D.C. regulated power supply respectively,-Vp and pseudo-the end between the Pgnd.
The Adjustable Output Voltage type list input dual output D.C. regulated power supply structure principle chart of symmetrical structure as shown in Figure 9.
Resistance R 0 is the current-limiting resistance of current-limiting type voltage follower, the maximum output current of voltage follower is restricted to: (U (sat)-Uo)/R0, wherein U (sat) is the saturated output voltage of amplifier, Uo is the output voltage of voltage follower, and the value of current-limiting resistance R0 should make the maximum output current of voltage follower be no more than the maximum output current that amplifier allows; When operational amplifier A 0 itself had output short circuit protection function or output current limiting function, the resistance R 0 of voltage follower can short circuit in pseudo-ground of the virtual earth maker.
Variable direct voltage in the integrated regulator input certain limit, constant direct voltage is stablized in output.
Single input dual output D.C. regulated power supply of brief structure: determine total output voltage by integrated regulator earlier, produce the virtual earth Sgnd and pseudo-ground Pgnd of D.C. regulated power supply again by virtual earth pseudo-ground maker or current-limiting type voltage follower, thereby form the D.C. regulated power supply of dual output, structure is simpler;
Single input dual output D.C. regulated power supply of symmetrical structure: the virtual earth Sgnd and pseudo-ground Pgnd that produce D.C. regulated power supply earlier by pseudo-ground of virtual earth maker, determine positive output voltage and negative output voltage respectively by integrated regulator again, thereby form the D.C. regulated power supply of dual output; The single input dual output D.C. regulated power supply input power supply compatible with single power supply and the duplicate supply of symmetrical structure use comparatively flexible.
Output voltage fixed list input dual output D.C. regulated power supply: output voltage is fixed;
Adjustable Output Voltage type list input dual output D.C. regulated power supply: Adjustable Output Voltage;
Described " virtual earth ", its graphic symbol is Sgnd for semicircle (being generally hollow figure), letter character, virtual earth Sgnd obtains by the common port that is connected across the both ends of power series resistance usually.Virtual earth Sgnd has the level calculating function of reference same with power supply ground GND, all have the virtual earth of same-sign and represent that it interconnects, a plurality of virtual earth system that can adopt when need using a plurality of independent virtual earth that expressions such as letter character Sgnd0, Sgnd1, Sgnd2 are not connected.Virtual earth Sgnd both can be connected with the power supply ground GND of negative and positive dual power, also can not be connected with power supply ground GND.What virtual earth Sgnd was different with power supply ground GND is: some then can adopt single power supply after need using the circuit of dual power supply to adopt virtual earth Sgnd mode to design, and use more flexible; When not being connected with power supply ground GND, virtual earth Sgnd itself does not have power (or electric current) driving force, can not be connected with non-virtual earth terminals, but can connect the high impedance input as the zero level input signal.
Described " pseudo-ground ", its graphic symbol is that the semicircle, the letter character that include isosceles right triangle are Pgnd, and pseudo-ground Pgnd obtains by virtual earth Sgnd is driven, and the driving of virtual earth adopts voltage follower to realize usually.Pseudo-ground Pgnd has the level calculating function of reference same with power supply ground GND, what all had a same-sign represents that pseudo-ly it interconnects, a plurality of pseudo-ground system that can adopt when needing to use a plurality of independent pseudo-ground that expressions such as letter character Pgnd0, Pgnd1, Pgnd2 are not connected.The effect of pseudo-ground Pgnd is similar to power supply ground GND, has certain current driving ability, but the non-homogeneous pseudo-ground Pgnd in the same power-supply system can not link together (virtual earth Sgnd that can it is corresponding when needing to form unified reference potential links together) usually, and the different pseudo-ground Pgnd under the separate power-supply system can link together.It is the virtual earth with driving force that pseudo-ground Pgnd can regard as, and pseudo-ground Pgnd cooperates virtual earth Sgnd to make needs to use the circuit of dual power supply also can adopt single power supply, uses more flexible.And when circuit analysis is calculated, the same easy when adopting the power supply ground GND of virtual earth Sgnd and pseudo-ground Pgnd mode and employing duplicate supply.
Pseudo-ground Pgnd has certain electric current or power drive ability, and pseudo-ground Pgnd can be used as common power supply ground GND use in certain current range, thereby makes single supply change negative and positive dual power into.
Form the circuit that single operational amplifier of importing the dual output D.C. regulated power supply adopts the power-type amplifier usually or has similar functions, thereby make pseudo-ground Pgnd have stronger driving force; And operational amplifier also can adopt common amplifier when little electric current or low-power applications, to reduce the power supply cost.
The resistance of resistance R 0 (but being not limited to) is usually got 0 Ω～2K Ω, the resistance of resistance R 1～R4 (but being not limited to) is usually got 1K Ω～20K Ω, the resistance of potentiometer Rp, Rp1, Rp2 (but being not limited to) is usually got 10K Ω～100K Ω, and the appearance value of capacitor C 0～C4 (but being not limited to) is usually got 0.1uF～200uF.
Single supply of the present invention transfers method and voltage follower and the virtual earth pseudo-ground maker and the D.C. regulated power supply of duplicate supply to, only adopt semiconductor device and Resistor-Capacitor Unit to constitute, simple and reliable for structure, volume is little, with low cost, applicability is strong, have a wide range of applications at aspects such as robot control system(RCS), electronic circuit and electronic equipments.
Description of drawings
Fig. 1 single supply transfers the structured flowchart of duplicate supply method to.
The circuit theory diagrams of Fig. 2 current-limiting type voltage follower.
The structured flowchart and the circuit theory diagrams of Fig. 3 a, pseudo-ground of 3b virtual earth maker.
Fig. 4 a adopts the output voltage fixed list input dual output D.C. regulated power supply structure principle chart of the brief structure of positive circuit of three-terminal voltage-stabilizing integrated and current-limiting type voltage follower.
Fig. 4 b adopts the output voltage fixed list input dual output D.C. regulated power supply structure principle chart of the brief structure of positive circuit of three-terminal voltage-stabilizing integrated and pseudo-ground of virtual earth maker.
Fig. 5 a adopts the output voltage fixed list input dual output D.C. regulated power supply structure principle chart of the brief structure of negative circuit of three-terminal voltage-stabilizing integrated and current-limiting type voltage follower.
Fig. 5 b adopts the output voltage fixed list input dual output D.C. regulated power supply structure principle chart of the brief structure of negative circuit of three-terminal voltage-stabilizing integrated and pseudo-ground of virtual earth maker.
The output voltage fixed list input dual output D.C. regulated power supply structure principle chart of Fig. 6 symmetrical structure.
Fig. 7 a adopts the Adjustable Output Voltage type list of the brief structure of just adjustable integrated regulator and current-limiting type voltage follower to import the structure principle chart of dual output D.C. regulated power supply.
Fig. 7 b adopts the Adjustable Output Voltage type list of the brief structure of just adjustable integrated regulator and pseudo-ground of virtual earth maker to import the structure principle chart of dual output D.C. regulated power supply.
Fig. 8 a adopts the Adjustable Output Voltage type list of the brief structure of negative adjustable integrated regulator and current-limiting type voltage follower to import the structure principle chart of dual output D.C. regulated power supply.
Fig. 8 b adopts the Adjustable Output Voltage type list of the brief structure of negative adjustable integrated regulator and pseudo-ground of virtual earth maker to import the structure principle chart of dual output D.C. regulated power supply.
The Adjustable Output Voltage type list input dual output D.C. regulated power supply structure principle chart of Fig. 9 symmetrical structure.
The embodiment of the output voltage fixed list input dual output D.C. regulated power supply of Figure 10 a, 10b current-limiting type voltage follower and virtual earth pseudo-ground maker and brief structure.
The embodiment of the output voltage fixed list input dual output D.C. regulated power supply of Figure 11 current-limiting type voltage follower and virtual earth pseudo-ground maker and symmetrical structure.
The embodiment of the Adjustable Output Voltage type list input dual output D.C. regulated power supply of Figure 12 a, 12b current-limiting type voltage follower and brief structure.
The embodiment of the Adjustable Output Voltage type list input dual output D.C. regulated power supply of Figure 13 current-limiting type voltage follower and virtual earth pseudo-ground maker and symmetrical configuration.
The circuit symbol figure of Figure 14 list input dual output D.C. regulated power supply.
The application of a plurality of single input dual output D.C. regulated power supplies of Figure 15 homology power-supply system.
The application of a plurality of single input dual output D.C. regulated power supplies of Figure 16 independent electric power supply.
Embodiment
In conjunction with the accompanying drawings embodiments of the invention are described as follows:
Embodiment 1
A kind of form of implementation of current-limiting type voltage follower and virtual earth pseudo-ground maker and single input dual output D.C. regulated power supply
The output voltage fixed list input dual output D.C. regulated power supply of current-limiting type voltage follower and virtual earth pseudo-ground maker and brief structure: the operational amplifier of current-limiting type voltage follower adopts LF353, and resistance R 0 is 1K Ω; The divider resistance R1 of pseudo-ground of virtual earth maker adopts identical resistance 10K Ω with R2, and the positive circuit of three-terminal voltage-stabilizing integrated of D.C. regulated power supply adopts W7812, negative circuit of three-terminal voltage-stabilizing integrated to adopt W7912; Input voltage 15V～24V, Pgnd is a benchmark with pseudo-ground, the duplicate supply of output ± 6V voltage, circuit theory diagrams are shown in Figure 10 a, Figure 10 b.
The output voltage fixed list input dual output D.C. regulated power supply of current-limiting type voltage follower and virtual earth pseudo-ground maker and symmetrical structure: the operational amplifier of current-limiting type voltage follower adopts LF353, and resistance R 0 is 1K Ω; The divider resistance R1 of pseudo-ground of virtual earth maker adopts identical resistance 10K Ω with R2, and the positive and negative circuit of three-terminal voltage-stabilizing integrated of D.C. regulated power supply adopts W7805 and W7905 respectively; Input voltage 15V～24V, Pgnd is a benchmark with pseudo-ground, the duplicate supply of output ± 5V voltage, circuit theory diagrams are as shown in figure 11.
The Adjustable Output Voltage type list input dual output D.C. regulated power supply of current-limiting type voltage follower and brief structure: the operational amplifier of current-limiting type voltage follower adopts LF353, and resistance R 0 is 2K Ω; The divider resistance R1 of D.C. regulated power supply adopts identical resistance 10K Ω with R2, and it is just adjustable, and integrated regulator adopts LM317, negative adjustable integrated regulator to adopt LM337, and R3 gets 1K Ω, and potentiometer Rp gets 10K Ω; Input voltage 18V～24V, integrated regulator LM317 or LM337 are about by variable resistor Rp output adjustable voltage scope: 1.26V～13.86V, Pgnd is a benchmark with pseudo-ground, output ± 0.63V～± duplicate supply of 6.93V voltage, circuit theory diagrams are shown in Figure 12 a, Figure 12 b.
The Adjustable Output Voltage type list input dual output D.C. regulated power supply of current-limiting type voltage follower and virtual earth pseudo-ground maker and symmetrical configuration: the operational amplifier of current-limiting type voltage follower adopts LF353, and resistance R 0 is 2K Ω; The divider resistance R1 of pseudo-ground of virtual earth maker adopts identical resistance 10K Ω with R2, and the positive and negative adjustable integrated regulator of D.C. regulated power supply adopts LM317 and LM337 respectively, and R3 and R4 get 1K Ω, and potentiometer Rp1 and Rp2 get 10K Ω; Input voltage 32V, integrated regulator LM317 and LM337 are respectively by variable resistor Rp1 and Rp2 output adjustable voltage, Pgnd is a benchmark with pseudo-ground, positive supply output :+1.26V～+ 13.86V voltage, negative supply output :-1.26V～-13.86V voltage, as shown in figure 13.
The capacitor C 0 of single input dual output D.C. regulated power supply gets 100uF, C1 and C2 gets 10uF, C3 and C4 gets 0.1uF.
The application of single input dual output D.C. regulated power supply of complicated multi-power system
The circuit symbol figure of single input dual output D.C. regulated power supply as shown in figure 14.
Two complicated circuit systems that single circuit of importing dual output D.C. regulated power supply and power supply thereof is formed in the same power-supply system, the virtual earth Sgnd1 of two single input dual output D.C. regulated power supplies is connected with virtual earth Sgnd2, corresponding pseudo-ground Pgnd1 has identical level with pseudo-ground Pgnd2, all can be used as the benchmark of circuit current potential, the electric current that flows through during transmission signals between two circuit constitutes complete loop by common power source.The application block diagram of a plurality of single input dual output D.C. regulated power supplies of homology power-supply system as shown in figure 15.
The complicated circuit system that the single input dual output D.C. regulated power supply under two independent electric power supplies and the circuit of power supply thereof are formed, the pseudo-ground Pgnd1 of two single input dual output D.C. regulated power supplies is connected with pseudo-ground Pgnd2, that is: two have identical level pseudo-ly, can be used as the benchmark of circuit current potential, simultaneously the electric current that flows through during transmission signals between two circuit constitutes complete loop by the connecting line between two pseudo-ground.The application block diagram of a plurality of single input dual output D.C. regulated power supplies of independent electric power supply as shown in figure 16.
Claims (15)
1. a single supply transfers the method for duplicate supply to, transfers the single supply of two-wire system the negative and positive dual power of three-wire system to, and it is characterized in that: be connected across between two power lines of single supply after two resistance series connection, its common port is as virtual earth Sgnd; And virtual earth Sgnd drives pseudo-ground of generation Pgnd through voltage follower, difference cross-over connection electric capacity between two power lines of pseudo-ground Pgnd and single supply, and two power lines of pseudo-ground Pgnd and single supply constitute the positive-negative dual power supply system of three-wire systems; During application, its virtual earth Sgnd of system that a plurality of homology single supplies transfer negative and positive dual power to links together and forms a big system, and its pseudo-ground Pgnd of system that a plurality of separate single power supplys transfer negative and positive dual power to links together and forms a big system.
2. current-limiting type voltage follower, it is positive power source terminal+Vx and negative power end-Vx, voltage input end Ui, a voltage output end Uo that two power ends are arranged; It is characterized in that: the current-limiting type voltage follower is made up of operational amplifier A 0 and resistance R 0, resistance R 0 is connected across between the output and inverting input of amplifier A0, the in-phase input end of amplifier A0 meets the input Ui into follower, the inverting input of amplifier A0 meets the output Uo into follower, and the positive-negative power termination of amplifier A0 is the positive-negative power end+Vx and-Vx of follower.
3. pseudo-ground of the virtual earth that adopts the described current-limiting type voltage follower of claim 2 maker, have two power ends be positive power source terminal+Vx and negative power end-Vx, virtual earth end Sgnd, one hold Pgnd pseudo-ly; It is characterized in that: pseudo-ground of virtual earth maker is made up of current-limiting type voltage follower, resistance R 1 and R2, resistance R 1 is connected across between the input Ui and positive power source terminal+Vx of follower, resistance R 2 is connected across between the input Ui and negative power end-Vx of follower, the input Ui of follower meets the virtual earth end Sgnd into maker, the output Uo of follower connect for maker hold Pgnd pseudo-ly, the positive-negative power termination of follower is the positive-negative power end+Vx and-Vx of maker.
4. output voltage fixed list input dual output D.C. regulated power supply that adopts the described single supply of claim 1 to transfer pseudo-ground of the described virtual earth of duplicate supply method and the described current-limiting type voltage follower of claim 2 or claim 3 maker to has that two power inputs are positive supply input+Pv and negative supply input-Pv, virtual earth end Sgnd, one to hold Pgnd, two power output ends be positive supply output+Vp and negative supply output-Vp pseudo-ly; It is characterized in that: output voltage fixed list input dual output D.C. regulated power supply comprises circuit of three-terminal voltage-stabilizing integrated, pseudo-ground of current-limiting type voltage follower or virtual earth maker, D.C. regulated power supply is imported single power supply, insert the circuit of three-terminal voltage-stabilizing integrated input, the output termination of circuit of three-terminal voltage-stabilizing integrated is the output of D.C. regulated power supply, realize the voltage stabilizing output of power supply by circuit of three-terminal voltage-stabilizing integrated, and the maker cross-over connection of pseudo-ground of current-limiting type voltage follower or virtual earth is between positive and negative input power supply or positive and negative out-put supply, produce the reference voltage between positive negative output voltage as ground connection, realize the function and the negative and positive dual power output function on virtual earth and pseudo-ground.
5. by the described output voltage fixed of claim 4 list input dual output D.C. regulated power supply, it is characterized in that: output voltage fixed list input dual output D.C. regulated power supply is by positive circuit of three-terminal voltage-stabilizing integrated P1, the current-limiting type voltage follower, capacitor C 0 and C1 and C2, resistance R 1 and R2 form, input-the Pv of D.C. regulated power supply is connected with the earth terminal GND of integrated regulator P1 with output-Vp simultaneously, the voltage input end Ui of integrated regulator P1 and output Uo meet input+Pv and the output+Vp into D.C. regulated power supply respectively, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, the input Ui of voltage follower and output Uo connect respectively and are the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, input+Pv that the positive-negative power end+Vx of voltage follower and-Vx connect D.C. regulated power supply respectively and-Pv, resistance R 1, R2 is connected across the output+Vp of D.C. regulated power supply respectively, between-Vp and the virtual earth end Sgnd, capacitor C 1, C2 is connected across the output+Vp of D.C. regulated power supply respectively,-Vp and pseudo-the end between the Pgnd.
6. by the described output voltage fixed of claim 4 list input dual output D.C. regulated power supply, it is characterized in that: output voltage fixed list input dual output D.C. regulated power supply is by positive circuit of three-terminal voltage-stabilizing integrated P1, pseudo-ground of virtual earth maker, capacitor C 0 and C1 and C2 form, input-the Pv of D.C. regulated power supply is connected with the earth terminal GND of integrated regulator P1 with output-Vp simultaneously, the voltage input end Ui of integrated regulator P1 and output Uo meet input+Pv and the output+Vp into D.C. regulated power supply respectively, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, the virtual earth end Sgnd of maker and pseudo-hold Pgnd to connect respectively to be the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, output+Vp that the positive-negative power end+Vx of maker and-Vx connect D.C. regulated power supply respectively and-Vp, capacitor C 1, C2 is connected across the output+Vp of D.C. regulated power supply respectively,-Vp and pseudo-the end between the Pgnd.
7. by the described output voltage fixed of claim 4 list input dual output D.C. regulated power supply, it is characterized in that: output voltage fixed list input dual output D.C. regulated power supply is by negative circuit of three-terminal voltage-stabilizing integrated P1, the current-limiting type voltage follower, capacitor C 0 and C1 and C2, resistance R 1 and R2 form, input+the Pv of D.C. regulated power supply is connected with the earth terminal GND of integrated regulator P1 with output+Vp simultaneously, the voltage input end Ui of integrated regulator P1 and output Uo meet input-Pv and the output-Vp into D.C. regulated power supply respectively, capacitor C 0 be connected across D.C. regulated power supply input-Pv and+Pv between, the input Ui of voltage follower and output Uo connect respectively and are the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, input+Pv that the positive-negative power end+Vx of voltage follower and-Vx connect D.C. regulated power supply respectively and-Pv, resistance R 1, R2 is connected across the output-Vp of D.C. regulated power supply respectively, between+Vp and the virtual earth end Sgnd, capacitor C 1, C2 is connected across the output-Vp of D.C. regulated power supply respectively, + Vp and pseudo-the end between the Pgnd.
8. by the described output voltage fixed of claim 4 list input dual output D.C. regulated power supply, it is characterized in that: output voltage fixed list input dual output D.C. regulated power supply is by negative circuit of three-terminal voltage-stabilizing integrated P1, pseudo-ground of virtual earth maker, capacitor C 0 and C1 and C2 form, input+the Pv of D.C. regulated power supply is connected with the earth terminal GND of integrated regulator P1 with output+Vp simultaneously, the voltage input end Ui of integrated regulator P1 and output Uo meet input-Pv and the output-Vp into D.C. regulated power supply respectively, capacitor C 0 be connected across D.C. regulated power supply input-Pv and+Pv between, the virtual earth end Sgnd of maker and pseudo-hold Pgnd to connect respectively to be the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, output+Vp that the positive-negative power end+Vx of maker and-Vx connect D.C. regulated power supply respectively and-Vp, capacitor C 1, C2 is connected across the output-Vp of D.C. regulated power supply respectively, + Vp and pseudo-the end between the Pgnd.
9. by the described output voltage fixed of claim 4 list input dual output D.C. regulated power supply, it is characterized in that: output voltage fixed list input dual output D.C. regulated power supply is by positive circuit of three-terminal voltage-stabilizing integrated P1, negative circuit of three-terminal voltage-stabilizing integrated P2, pseudo-ground of virtual earth maker, capacitor C 0 and C1 and C2 form, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, the virtual earth end Sgnd of maker and pseudo-hold Pgnd to connect respectively to be the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, input+Pv that the positive-negative power end+Vx of maker and-Vx connect D.C. regulated power supply respectively and-Pv, the voltage input end Ui of integrated regulator P1 and output Uo meet input+Pv and the output+Vp into D.C. regulated power supply respectively, the voltage input end Ui of integrated regulator P2 and output Uo meet input-Pv and the output-Vp into D.C. regulated power supply respectively, what the earth terminal GND of integrated regulator P1 and P2 connect D.C. regulated power supply holds Pgnd, capacitor C 1 pseudo-ly, C2 is connected across the output+Vp of D.C. regulated power supply respectively,-Vp and pseudo-the end between the Pgnd.
10. Adjustable Output Voltage type list input dual output D.C. regulated power supply that adopts the described single supply of claim 1 to transfer pseudo-ground of the described virtual earth of duplicate supply method and the described current-limiting type voltage follower of claim 2 or claim 3 maker to has that two power inputs are positive supply input+Pv and negative supply input-Pv, virtual earth end Sgnd, one to hold Pgnd, two power output ends be positive supply output+Vp and negative supply output-Vp pseudo-ly; It is characterized in that: Adjustable Output Voltage type list input dual output D.C. regulated power supply comprises adjustable integrated regulator, pseudo-ground of current-limiting type voltage follower or virtual earth maker, potentiometer, resistance, electric capacity, D.C. regulated power supply is imported single power supply, insert adjustable integrated regulator input, the output termination of adjustable integrated regulator is the output of D.C. regulated power supply, realize the voltage stabilizing and the adjustable output of power supply by adjustable integrated regulator, and the maker cross-over connection of pseudo-ground of current-limiting type voltage follower or virtual earth is between positive and negative input power supply or positive and negative out-put supply, produce the reference voltage between positive negative output voltage as ground connection, realize the function and the negative and positive dual power output function on virtual earth and pseudo-ground.
11. by the described Adjustable Output Voltage type of claim 10 list input dual output D.C. regulated power supply, it is characterized in that: Adjustable Output Voltage type list input dual output D.C. regulated power supply is by just adjustable integrated regulator P1, diode D1, the current-limiting type voltage follower, resistance R 1 and R2 and R3, potentiometer Rp, capacitor C 0～C3 forms, input-the Pv of D.C. regulated power supply is connected with output-Vp, the voltage input end Ui of integrated regulator P1 and output Uo meet input+Pv and the output+Vp into D.C. regulated power supply respectively, diode D1 both positive and negative polarity is connected with voltage output end Uo and the input Ui of integrated regulator P1 respectively, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, resistance R 3 and the output+Vp that is connected across D.C. regulated power supply after the stiff end of potentiometer Rp is connected in series and-Vp between, the adjustable side of potentiometer Rp is connected with the adjustable side ADJ of integrated regulator P1, capacitor C 3 is connected across between the input-Pv of the adjustable side ADJ of integrated regulator P1 and D.C. regulated power supply, the input Ui of voltage follower and output Uo connect respectively and are the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, input+Pv that the positive-negative power end+Vx of voltage follower and-Vx connect D.C. regulated power supply respectively and-Pv, resistance R 1, R2 is connected across the output+Vp of D.C. regulated power supply respectively, between-Vp and the virtual earth end Sgnd, capacitor C 1, C2 is connected across the output+Vp of D.C. regulated power supply respectively,-Vp and pseudo-the end between the Pgnd.
12. by the described Adjustable Output Voltage type of claim 10 list input dual output D.C. regulated power supply, it is characterized in that: Adjustable Output Voltage type list input dual output D.C. regulated power supply is by just adjustable integrated regulator P1, diode D1, pseudo-ground of virtual earth maker, resistance R 3, potentiometer Rp, capacitor C 0～C3 forms, input-the Pv of D.C. regulated power supply is connected with output-Vp, the voltage input end Ui of integrated regulator P1 and output Uo meet input+Pv and the output+Vp into D.C. regulated power supply respectively, diode D1 both positive and negative polarity is connected with voltage output end Uo and the input Ui of integrated regulator P1 respectively, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, resistance R 3 and the output+Vp that is connected across D.C. regulated power supply after the stiff end of potentiometer Rp is connected in series and-Vp between, the adjustable side of potentiometer Rp is connected with the adjustable side ADJ of integrated regulator P1, capacitor C 3 is connected across between the input-Pv of the adjustable side ADJ of integrated regulator P1 and D.C. regulated power supply, the virtual earth end Sgnd of maker and pseudo-hold Pgnd to connect respectively to be the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, output+Vp that the positive-negative power end+Vx of maker and-Vx connect D.C. regulated power supply respectively and-Vp, capacitor C 1, C2 is connected across the output+Vp of D.C. regulated power supply respectively,-Vp and pseudo-the end between the Pgnd.
13. by the described Adjustable Output Voltage type of claim 10 list input dual output D.C. regulated power supply, it is characterized in that: Adjustable Output Voltage type list input dual output D.C. regulated power supply is by negative adjustable integrated regulator P1, diode D1, the current-limiting type voltage follower, resistance R 1 and R2 and R3, potentiometer Rp, capacitor C 0～C3 forms, input+the Pv of D.C. regulated power supply is connected with output+Vp, the voltage input end Ui of integrated regulator P1 and output Uo meet input-Pv and the output-Vp into D.C. regulated power supply respectively, diode D1 both positive and negative polarity is connected with voltage input end Ui and the output Uo of integrated regulator P1 respectively, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, resistance R 3 and the output-Vp that is connected across D.C. regulated power supply after the stiff end of potentiometer Rp is connected in series and+Vp between, the adjustable side of potentiometer Rp is connected with the adjustable side ADJ of integrated regulator P1, capacitor C 3 is connected across between the input+Pv of the adjustable side ADJ of integrated regulator P1 and D.C. regulated power supply, the input Ui of voltage follower and output Uo connect respectively and are the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, input+Pv that the positive-negative power end+Vx of voltage follower and-Vx connect D.C. regulated power supply respectively and-Pv, resistance R 1, R2 is connected across the output-Vp of D.C. regulated power supply respectively, between+Vp and the virtual earth end Sgnd, capacitor C 1, C2 is connected across the output-Vp of D.C. regulated power supply respectively, + Vp and pseudo-the end between the Pgnd.
14. by the described Adjustable Output Voltage type of claim 10 list input dual output D.C. regulated power supply, it is characterized in that: Adjustable Output Voltage type list input dual output D.C. regulated power supply is by negative adjustable integrated regulator P1, diode D1, pseudo-ground of virtual earth maker, resistance R 3, potentiometer Rp, capacitor C 0～C3 forms, input+the Pv of D.C. regulated power supply is connected with output+Vp, the voltage input end Ui of integrated regulator P1 and output Uo meet input-Pv and the output-Vp into D.C. regulated power supply respectively, diode D1 both positive and negative polarity is connected with voltage input end Ui and the output Uo of integrated regulator P1 respectively, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, resistance R 3 and the output-Vp that is connected across D.C. regulated power supply after the stiff end of potentiometer Rp is connected in series and+Vp between, the adjustable side of potentiometer Rp is connected with the adjustable side ADJ of integrated regulator P1, capacitor C 3 is connected across between the input+Pv of the adjustable side ADJ of integrated regulator P1 and D.C. regulated power supply, the virtual earth end Sgnd of maker and pseudo-hold Pgnd to connect respectively to be the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, output+Vp that the positive-negative power end+Vx of maker and-Vx connect D.C. regulated power supply respectively and-Vp, capacitor C 1, C2 is connected across the output-Vp of D.C. regulated power supply respectively, + Vp and pseudo-the end between the Pgnd.
15. by the described Adjustable Output Voltage type of claim 10 list input dual output D.C. regulated power supply, it is characterized in that: Adjustable Output Voltage type list input dual output D.C. regulated power supply is by just adjustable integrated regulator P1, negative adjustable integrated regulator P2, diode D1 and D2, pseudo-ground of virtual earth maker, resistance R 3 and R4, potentiometer Rp1 and Rp2, capacitor C 0～C4 forms, capacitor C 0 be connected across D.C. regulated power supply input+Pv and-Pv between, the virtual earth end Sgnd of maker and pseudo-hold Pgnd to connect respectively to be the virtual earth end Sgnd of D.C. regulated power supply and pseudo-the Pgnd that holds, input+Pv that the positive-negative power end+Vx of maker and-Vx connect D.C. regulated power supply respectively and-Pv, the voltage input end Ui of integrated regulator P1 and output Uo meet input+Pv and the output+Vp into D.C. regulated power supply respectively, diode D1 both positive and negative polarity is connected with voltage output end Uo and the input Ui of integrated regulator P1 respectively, resistance R 3 and the output+Vp that is connected across D.C. regulated power supply after the stiff end of potentiometer Rp1 is connected in series and pseudo-the end between the Pgnd, the adjustable side of potentiometer Rp1 is connected with the adjustable side ADJ of integrated regulator P1, capacitor C 3 is connected across the adjustable side ADJ of integrated regulator P1 and holding between the Pgnd of D.C. regulated power supply pseudo-ly, the voltage input end Ui of integrated regulator P2 and output Uo meet input-Pv and the output-Vp into D.C. regulated power supply respectively, diode D2 both positive and negative polarity is connected with voltage input end Ui and the output Uo of integrated regulator P2 respectively, resistance R 4 and the output-Vp that is connected across D.C. regulated power supply after the stiff end of potentiometer Rp2 is connected in series and pseudo-the end between the Pgnd, the adjustable side of potentiometer Rp2 is connected with the adjustable side ADJ of integrated regulator P2, capacitor C 4 is connected across the adjustable side ADJ of integrated regulator P2 and holding between the Pgnd of D.C. regulated power supply, capacitor C 1 pseudo-ly, C2 is connected across the output+Vp of D.C. regulated power supply respectively,-Vp and pseudo-the end between the Pgnd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910053855XA CN101651412B (en) | 2009-06-26 | 2009-06-26 | Method of converting single power to dual power, voltage follower, virtual ground and pseudo ground generator, and DC regulated power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910053855XA CN101651412B (en) | 2009-06-26 | 2009-06-26 | Method of converting single power to dual power, voltage follower, virtual ground and pseudo ground generator, and DC regulated power |
Publications (2)
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| CN101651412A true CN101651412A (en) | 2010-02-17 |
| CN101651412B CN101651412B (en) | 2012-07-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245366A (en) * | 2013-04-25 | 2013-08-14 | 南京航空航天大学 | Vibration signal differentiating circuit |
| CN103809003A (en) * | 2014-01-20 | 2014-05-21 | 河南科技大学 | Isolator for testing signal voltage waveforms |
| CN106505853A (en) * | 2016-12-14 | 2017-03-15 | 李矞辉 | The single supply that band is simply protected turns two-supply circuit |
| CN108683333A (en) * | 2018-05-07 | 2018-10-19 | 无锡瓴芯电子科技有限公司 | A kind of DC power supply circuit of single-input double-output |
| CN109445510A (en) * | 2018-10-29 | 2019-03-08 | 合肥本源量子计算科技有限责任公司 | A kind of voltage source |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275980B (en) * | 2007-12-06 | 2010-06-30 | 上海大学 | Differential Capacitor PWM Converter |
| CN101425778B (en) * | 2008-12-04 | 2011-06-08 | 上海大学 | Integrated controlled signal processor and application thereof |
-
2009
- 2009-06-26 CN CN200910053855XA patent/CN101651412B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245366A (en) * | 2013-04-25 | 2013-08-14 | 南京航空航天大学 | Vibration signal differentiating circuit |
| CN103809003A (en) * | 2014-01-20 | 2014-05-21 | 河南科技大学 | Isolator for testing signal voltage waveforms |
| CN106505853A (en) * | 2016-12-14 | 2017-03-15 | 李矞辉 | The single supply that band is simply protected turns two-supply circuit |
| CN108683333A (en) * | 2018-05-07 | 2018-10-19 | 无锡瓴芯电子科技有限公司 | A kind of DC power supply circuit of single-input double-output |
| CN109445510A (en) * | 2018-10-29 | 2019-03-08 | 合肥本源量子计算科技有限责任公司 | A kind of voltage source |
| CN109445510B (en) * | 2018-10-29 | 2020-09-15 | 合肥本源量子计算科技有限责任公司 | Voltage source |
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| Publication number | Publication date |
|---|---|
| CN101651412B (en) | 2012-07-04 |
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