CN205385419U

CN205385419U - Dual output direct current adjustable power

Info

Publication number: CN205385419U
Application number: CN201620112226.5U
Authority: CN
Inventors: 伊康平
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-02-04
Filing date: 2016-02-04
Publication date: 2016-07-13
Anticipated expiration: 2026-02-04

Abstract

The utility model discloses a dual output direct current adjustable power, including transformer W, rectifier bridge T, chip IC1 and chip IC2, the both ends of 220V alternating current are connected respectively at transformer W's winding N1's both ends, and rectifier bridge T's port 1 and rectifier bridge T's port 3 are connected respectively to transformer W's winding N2's both ends, and electric capacity C1, chip IC1's pin 1 and chip IC2's pin 1 are connected to rectifier bridge T's port 2. The utility model discloses dual output direct current adjustable power simple structure, components and parts are few, combine single -pole double -throw through two way three terminal regulator, can export the two tunnel different DC voltages of stabilizing respectively, and output voltage are adjustable, have consequently that the function is various, application scope wide and convenient to use's advantage.

Description

A kind of doubleway output adjustable power of direct current

Technical field

This utility model relates to a kind of power supply, specifically a kind of doubleway output adjustable power of direct current.

Background technology

Along with improving constantly of people's living standard, electronic equipment has become as a requisite part in life, especially various household electrical appliance bring great convenience to the life of people, work, and this kind of electronic installation is desirable that a constant voltage dc source that precision is higher, electric current is bigger.The constant voltage dc source of existing market is of a great variety, its mid and low-end products are especially many, although the relative high-end product of low-end product has the advantage of price, but quality is often as one wishes not to the utmost, all there is the defect such as function singleness, little, the debugging maintenance difficult of use scope in common regulated power supply, although and high-end product reliable in quality, safety and stability, but price is high also allows people hang back.Therefore need to be improved.

Utility model content

The purpose of this utility model is in that to provide a kind of doubleway output adjustable power of direct current, with the problem solving to propose in above-mentioned background technology.

For achieving the above object, this utility model provides following technical scheme:

nullA kind of doubleway output adjustable power of direct current，Including transformator W、Rectifier bridge T、Chip IC 1 and chip IC 2，The two ends of the winding N1 of described transformator W connect the two ends of 220V alternating current respectively，The two ends of the winding N2 of transformator W connect the port 1 of rectifier bridge T and the port 3 of rectifier bridge T respectively，The port 2 of rectifier bridge T connects electric capacity C1、The pin 1 of chip IC 1 and the pin 1 of chip IC 2，The other end of electric capacity C1 connects resistance R3、The negative electrode of diode D2、The sliding end of potentiometer RP1、The fixing end of of potentiometer RP2、The sliding end of potentiometer RP2 and the port 4 of rectifier bridge T，The pin 2 of chip IC 1 connects resistance R1、Another fixing end of electric capacity C2 and potentiometer RP1，The other end of resistance R1 connects the moved end of single-pole double-throw switch (SPDT) S1，The other end of electric capacity C2 connects not moved end 1 of single-pole double-throw switch (SPDT) S1、The pin 3 of chip IC 1 and load A2，The pin 2 of chip IC 2 connects resistance R2、Another fixing end of electric capacity C3 and potentiometer RP2，The other end of resistance R2 connects the moved end of single-pole double-throw switch (SPDT) S2，The other end of electric capacity C3 connects not moved end 1 of single-pole double-throw switch (SPDT) S2、The pin 3 of chip IC 1 and load A1，The other end of resistance R3 connects the negative electrode of electric capacity C4 and diode D1，The winding N3 of the anode connection transformer W of diode D1，The other end of the winding N3 of transformator W connects the other end of electric capacity C4、The anode of diode D2、Not moved end 2 of single-pole double-throw switch (SPDT) S1、Not moved end 2 of single-pole double-throw switch (SPDT) S2、The other end of load A1 and the other end of load A2，The model of described chip IC 1 is LM7812，The model of chip IC 2 is LM7824.

As preferred version of the present utility model: the full bridge rectifier that described rectifier bridge T is made up of four IN4001.

Compared with prior art, the beneficial effects of the utility model are: this utility model doubleway output adjustable power of direct current simple in construction, components and parts are few, by two-way three terminal regulator in conjunction with single-pole double-throw switch (SPDT), the stable DC voltage that two-way is different can be exported respectively, and output voltage is adjustable, therefore there is diverse in function, advantage applied widely and easy to use.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of doubleway output adjustable power of direct current.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.

nullRefer to Fig. 1，In this utility model embodiment，A kind of doubleway output adjustable power of direct current，Including transformator W、Rectifier bridge T、Chip IC 1 and chip IC 2，The two ends of the winding N1 of described transformator W connect the two ends of 220V alternating current respectively，The two ends of the winding N2 of transformator W connect the port 1 of rectifier bridge T and the port 3 of rectifier bridge T respectively，The port 2 of rectifier bridge T connects electric capacity C1、The pin 1 of chip IC 1 and the pin 1 of chip IC 2，The other end of electric capacity C1 connects resistance R3、The negative electrode of diode D2、The sliding end of potentiometer RP1、The fixing end of of potentiometer RP2、The sliding end of potentiometer RP2 and the port 4 of rectifier bridge T，The pin 2 of chip IC 1 connects resistance R1、Another fixing end of electric capacity C2 and potentiometer RP1，The other end of resistance R1 connects the moved end of single-pole double-throw switch (SPDT) S1，The other end of electric capacity C2 connects not moved end 1 of single-pole double-throw switch (SPDT) S1、The pin 3 of chip IC 1 and load A2，The pin 2 of chip IC 2 connects resistance R2、Another fixing end of electric capacity C3 and potentiometer RP2，The other end of resistance R2 connects the moved end of single-pole double-throw switch (SPDT) S2，The other end of electric capacity C3 connects not moved end 1 of single-pole double-throw switch (SPDT) S2、The pin 3 of chip IC 1 and load A1，The other end of resistance R3 connects the negative electrode of electric capacity C4 and diode D1，The winding N3 of the anode connection transformer W of diode D1，The other end of the winding N3 of transformator W connects the other end of electric capacity C4、The anode of diode D2、Not moved end 2 of single-pole double-throw switch (SPDT) S1、Not moved end 2 of single-pole double-throw switch (SPDT) S2、The other end of load A1 and the other end of load A2，The model of described chip IC 1 is LM7812，The model of chip IC 2 is LM7824.

The full bridge rectifier that rectifier bridge T is made up of four IN4001.

Operation principle of the present utility model is: chip IC 1 in circuit and chip IC 2 respectively 7812 and 7824 circuit of three-terminal voltage-stabilizing integrated, due to its output voltage equal to nominal voltage stabilizing value and common ground terminal voltage sum, as long as therefore giving its common port 2 foot plus an adjustable positive and negative voltage, so that it may make output voltage height adjustable.Chip IC 1 and chip IC 2 in circuit share one group of rectifier power source.The winding N2 of transformator W is as another group output, after diode D1 rectification, electric capacity C4 filtering, resistance R3 current limliting, diode D2 voltage stabilizing, the reference negative voltage commonly of chip IC 1 and chip IC 2 is provided, the polarity of voltage being added on common port is may select by switching Sl, S2, adjust potentiometer RP1 or RP2 again, just can regulate two output voltage respectively.It is supplied respectively to load A1 and load A2 use.

Claims

null1. a doubleway output adjustable power of direct current，Including transformator W、Rectifier bridge T、Chip IC 1 and chip IC 2，It is characterized in that，The two ends of the winding N1 of described transformator W connect the two ends of 220V alternating current respectively，The two ends of the winding N2 of transformator W connect the port 1 of rectifier bridge T and the port 3 of rectifier bridge T respectively，The port 2 of rectifier bridge T connects electric capacity C1、The pin 1 of chip IC 1 and the pin 1 of chip IC 2，The other end of electric capacity C1 connects resistance R3、The negative electrode of diode D2、The sliding end of potentiometer RP1、The fixing end of of potentiometer RP2、The sliding end of potentiometer RP2 and the port 4 of rectifier bridge T，The pin 2 of chip IC 1 connects resistance R1、Another fixing end of electric capacity C2 and potentiometer RP1，The other end of resistance R1 connects the moved end of single-pole double-throw switch (SPDT) S1，The other end of electric capacity C2 connects not moved end 1 of single-pole double-throw switch (SPDT) S1、The pin 3 of chip IC 1 and load A2，The pin 2 of chip IC 2 connects resistance R2、Another fixing end of electric capacity C3 and potentiometer RP2，The other end of resistance R2 connects the moved end of single-pole double-throw switch (SPDT) S2，The other end of electric capacity C3 connects not moved end 1 of single-pole double-throw switch (SPDT) S2、The pin 3 of chip IC 1 and load A1，The other end of resistance R3 connects the negative electrode of electric capacity C4 and diode D1，The winding N3 of the anode connection transformer W of diode D1，The other end of the winding N3 of transformator W connects the other end of electric capacity C4、The anode of diode D2、Not moved end 2 of single-pole double-throw switch (SPDT) S1、Not moved end 2 of single-pole double-throw switch (SPDT) S2、The other end of load A1 and the other end of load A2，The model of described chip IC 1 is LM7812，ChipThe model of IC2 is LM7824.
2. doubleway output adjustable power of direct current according to claim 1, it is characterised in that the full bridge rectifier that described rectifier bridge T is made up of four IN4001.