CN203658892U

CN203658892U - Self-compensating line loss circuit

Info

Publication number: CN203658892U
Application number: CN201320675593.2U
Authority: CN
Inventors: 李洋; 鲜兵
Original assignee: XUZHOU HENGYUAN ELECTRICAL APPLIANCES CO Ltd
Current assignee: XUZHOU HENGYUAN ELECTRICAL APPLIANCES CO Ltd
Priority date: 2013-10-30
Filing date: 2013-10-30
Publication date: 2014-06-18
Anticipated expiration: 2023-10-30

Abstract

The utility model discloses a self-compensating line loss circuit which comprises a power supply, a feedback controller, a precision voltage regulator U1, a comparator A1, a capacitor C1, a capacitor C2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor Rs, a diode D1, a parasitic resistance Rline and an electricity load, wherein a V0 of the parasitic resistance Rline is connected to a Vout wire, an anode voltage of the power supply is a post-line output voltage Vout after passing through the wire, and the post-line output voltage Vout is provided for the electricity load so as to implement compensation of line loss of a circuit in the working process, which is generated when an output is connected with the electricity load, thereby enabling the post-line output voltage to reach a set voltage value and providing guarantee for normal working of power supply or charging of electricity load equipment.

Description

Self compensation line loss circuit

Technical field

The present invention relates to a kind of self compensation line loss circuit, belong to mains charger or power supply technical field.

Background technology

At present, after all kinds of mains chargers that generally use or power supply line, output voltage changes with load current value, between the output of all kinds of mains chargers or power supply body, be connected with a charging conductor, because the resistance value that this charging conductor itself is parasitic certain, so can produce corresponding pressure drop in the time that output current is flowed through this charging conductor, thereby after causing the line of mains charger or power supply, output voltage is lower than setting value, and deposit raw error, and it is larger to have output current, the conductor resistance of flowing through is larger, the pressure drop of output voltage larger with and the larger feature of error, have a strong impact on the normal work that rear class equipment is powered or charged.

Summary of the invention

The problem existing for above-mentioned prior art, the invention provides a kind of self compensation line loss circuit, realize circuit export be at work connected with by electric loading between the compensation of line loss, thereby output voltage reaches setting voltage value after making line, for electricity consumption load equipment is powered or the normal work of charging provides safeguard.

To achieve these goals, the technical solution used in the present invention is: a kind of self compensation line loss circuit, comprises that power supply, feedback controller, accurate voltage stabilizer U1, comparer A1, capacitor C 1, capacitor C 2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R s, diode D1, Vo are connected to the dead resistance Rline of Vout wire itself and by electric loading; The V+ end of described power supply positive pole and current-limiting resistance R1, the comparer A1 of accurate voltage stabilizer U1, the upper inclined to one side divider resistance R4 of positive input terminal IN+ of comparer A1 and the Vo of wire end are connected; The K end of power supply negative pole and accurate voltage stabilizer U1, lower inclined to one side divider resistance R3, the sampling resistor Rs of negative input end IN-of REF reference voltage filter capacitor C1, comparer A1 and the V-of comparer A1 end are connected; The A end of accurate voltage stabilizer U1 is connected with upper inclined to one side divider resistance R2 one end of the negative input end IN-of R end, current-limiting resistance R1 and comparer A1; The upper inclined to one side divider resistance R2 of the negative input end IN-of comparer A1, one end of lower inclined to one side divider resistance R3, noise Absorption Capacitance C2 are all connected with the negative input end IN-of comparer A1; One end of the upper inclined to one side divider resistance R4 of the negative input end IN+ of comparer A1, lower inclined to one side divider resistance R5 is connected with the negative input end IN+ of comparer A1; Divider resistance R5, sampling resistor Rs be connected with electric loading B-; Feedback controller counnter attack diode D1, one end of noise Absorption Capacitance C2 and the negative output terminal OUT of comparer A1 are connected; The output end vo ut of wire be connected with electric loading B+.

In this circuit, adopt self compensation line loss mode of operation, in circuit, be in series with compensating resistance, utilize the pressure drop producing on when charging resistance to compensate, realized line loss compensation between charging circuit is exported at work and battery is connected, the line loss problem between charging circuit and battery is resolved, compensation effect is thorough, greatly improve charge efficiency, reduced line loss, shortened the duration of charging, saved mass energy, and this is realized, and circuit is simple, circuit performance is high.

Accompanying drawing explanation

Fig. 1 is this circuit working principle schematic.

Embodiment

Below in conjunction with accompanying drawing, the invention will be further described.

As shown in Figure 1, self compensation line loss circuit of the present invention, comprises that power supply, feedback controller, accurate voltage stabilizer U1, comparer A1, capacitor C 1, capacitor C 2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R s, diode D1, Vo are connected to the dead resistance Rline of Vout wire itself and by electric loading; The V+ end of described power supply positive pole and current-limiting resistance R1, the comparer A1 of accurate voltage stabilizer U1, the upper inclined to one side divider resistance R4 of positive input terminal IN+ of comparer A1 and the Vo of wire end are connected; The K end of power supply negative pole and accurate voltage stabilizer U1, lower inclined to one side divider resistance R3, the sampling resistor Rs of negative input end IN-of REF reference voltage filter capacitor C1, comparer A1 and the V-of comparer A1 end are connected; The A end of accurate voltage stabilizer U1 is connected with upper inclined to one side divider resistance R2 one end of the negative input end IN-of R end, current-limiting resistance R1 and comparer A1; The upper inclined to one side divider resistance R2 of the negative input end IN-of comparer A1, one end of lower inclined to one side divider resistance R3, noise Absorption Capacitance C2 are all connected with the negative input end IN-of comparer A1; One end of the upper inclined to one side divider resistance R4 of the negative input end IN+ of comparer A1, lower inclined to one side divider resistance R5 is connected with the negative input end IN+ of comparer A1; Divider resistance R5, sampling resistor Rs be connected with electric loading B-; Feedback controller counnter attack diode D1, one end of noise Absorption Capacitance C2 and the negative output terminal OUT of comparer A1 are connected; The output end vo ut of wire be connected with electric loading B+.

When work, electric current is anodal to conductor wire end Vo by power supply, Vo offers and uses electric loading B+ through wire, flow back to power supply negative pole with electric loading B-output current through sampling resistor Rs and form loop, during due to electric current process wire, the dead resistance Rline of wire itself, cause between output voltage V out, producing pressure drop after wire front voltage Vo and line, supply with electricity consumption load voltage much smaller than power supply voltage, flow back to power supply negative pole with electric loading B-output current and form the sampling resistor Rs that connects in loop, while making electric current through sampling resistor Rs, produce pressure drop, the pressure drop producing between sampling resistor Rs two ends compares through comparer A1 sampling inside, provide the precise and stable REF reference voltage of the accurate voltage stabilizer U1 of voltage because power supply is anodal through current-limiting resistance R1, draw accurate voltage input comparator A1 negative input end IN-by upper inclined to one side divider resistance R2 and lower inclined to one side divider resistance R3 dividing potential drop, the pressure drop producing between sampling resistor Rs two ends is adjusted output by comparer A1, output terminal OUT adjusts through counnter attack diode D1 conducting input feedback controller, thereby reach setting voltage value by output voltage V out after making line.

Claims

1. a self compensation line loss circuit, it is characterized in that, comprise that power supply, feedback controller, accurate voltage stabilizer U1, comparer A1, capacitor C 1, capacitor C 2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R s, diode D1, Vo are connected to the dead resistance Rline of Vout wire itself and by electric loading; The V+ end of described power supply positive pole and current-limiting resistance R1, the comparer A1 of accurate voltage stabilizer U1, the upper inclined to one side divider resistance R4 of positive input terminal IN+ of comparer A1 and the Vo of wire end are connected; The K end of power supply negative pole and accurate voltage stabilizer U1, lower inclined to one side divider resistance R3, the sampling resistor Rs of negative input end IN-of REF reference voltage filter capacitor C1, comparer A1 and the V-of comparer A1 end are connected; The A end of accurate voltage stabilizer U1 is connected with upper inclined to one side divider resistance R2 one end of the negative input end IN-of R end, current-limiting resistance R1 and comparer A1; The upper inclined to one side divider resistance R2 of the negative input end IN-of comparer A1, one end of lower inclined to one side divider resistance R3, noise Absorption Capacitance C2 are all connected with the negative input end IN-of comparer A1; One end of the upper inclined to one side divider resistance R4 of the negative input end IN+ of comparer A1, lower inclined to one side divider resistance R5 is connected with the negative input end IN+ of comparer A1; Divider resistance R5, sampling resistor Rs be connected with electric loading B-; Feedback controller counnter attack diode D1, one end of noise Absorption Capacitance C2 and the negative output terminal OUT of comparer A1 are connected; The output end vo ut of wire be connected with electric loading B+.