CN103605395A

CN103605395A - Self-compensating line loss circuit

Info

Publication number: CN103605395A
Application number: CN201310523343.1A
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: 2014-02-26

Abstract

The invention discloses a self-compensating line loss circuit which comprises a power supply, a feedback controller, a precision 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 resistor Rline and an electricity load, wherein the parasitic resistor Rline of a lead is used for connecting Vo to Vout. Positive electrode voltage of the power supply passing the lead is output voltage Vout passing the lead, the output voltage Vout passing the lead is provided for the electricity load, line loss between the output of the circuit in working and the electricity load is compensated, so that the output voltage passing the lead reaches a set voltage value, and normal work of power supply or charging of an electricity load device is guaranteed.

Description

A kind of 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 when 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 operation 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 operation 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; Described power supply anodal with the current-limiting resistance R1 of accurate voltage stabilizer U1, the upper inclined to one side divider resistance R4 of positive input terminal IN+ of the V+ of comparer A1 end, comparer A1 and the Vo of wire hold is 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; One end of the upper inclined to one side divider resistance R2 of the negative input end IN-of comparer A1, lower inclined to one side divider resistance R3, noise Absorption Capacitance C2 is 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 with electric loading B-, be connected; 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 with electric loading B+, be connected.

In this circuit, adopt self compensation line loss mode of operation, in circuit, be in series with compensating resistance, the pressure drop producing on resistance while utilizing charging compensates, realized charging circuit export be at work connected with battery between line loss compensation, 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, a kind of 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; Described power supply anodal with the current-limiting resistance R1 of accurate voltage stabilizer U1, the upper inclined to one side divider resistance R4 of positive input terminal IN+ of the V+ of comparer A1 end, comparer A1 and the Vo of wire hold is 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; One end of the upper inclined to one side divider resistance R2 of the negative input end IN-of comparer A1, lower inclined to one side divider resistance R3, noise Absorption Capacitance C2 is 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 with electric loading B-, be connected; 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 with electric loading B+, be connected.

During work, electric current is anodal to conductor wire end Vo by power supply, Vo offers and uses electric loading B+ through wire, with electric loading B-output current, through sampling resistor Rs, flow back to power supply negative pole 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, with electric loading B-output current, flow back to power supply negative pole 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, because power supply is anodal, through current-limiting resistance R1, provide the precise and stable REF reference voltage of the accurate voltage stabilizer U1 of voltage, by upper inclined to one side divider resistance R2 and lower inclined to one side divider resistance R3 dividing potential drop, draw accurate voltage input comparator A1 negative input end IN-, 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; Described power supply anodal with the current-limiting resistance R1 of accurate voltage stabilizer U1, the upper inclined to one side divider resistance R4 of positive input terminal IN+ of the V+ of comparer A1 end, comparer A1 and the Vo of wire hold is 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; One end of the upper inclined to one side divider resistance R2 of the negative input end IN-of comparer A1, lower inclined to one side divider resistance R3, noise Absorption Capacitance C2 is 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 with electric loading B-, be connected; 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 with electric loading B+, be connected.