CN2155037Y

CN2155037Y - Multipurpose voltage-stabilizing constant-source

Info

Publication number: CN2155037Y
Application number: CN 93216610
Authority: CN
Inventors: 崔洪明
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-06-22
Filing date: 1993-06-22
Publication date: 1994-02-02
Anticipated expiration: 2003-06-22

Abstract

A multipurpose voltage-stabilizing constant-source of the utility model is a power equipment which can be used as a regulated power supply as well as a constant current supply. The utility model is mainly composed of voltage-stabilizing constant-current regulating circuits (IC, R1, R2, W1, W2), output indicator circuits (M (A/V), R3, R4), and two converting switches of K1 and K2. When two converting switches are positioned on the position of a-a', a constant-current output regulating circuit is formed. When two converting switches are positioned on the position of b-b', a voltage-stabilizing output regulating circuit is formed. The constant-current output and the voltage-stabilizing output can all be regulated. Two converting switches and a list head can namely form converting and output indications in two functional states. The structure is simple, the stability is high, and the operation is reliable.

Description

Multipurpose voltage-stabilizing constant-source

The utility model relates to a kind of many with voltage stabilizing, constant-current supply.Be that a kind of output voltage and electric current all can be adjusted power-supply device.

Though existing stabilized voltage supply stable performance also has certain setting range, the stabilized voltage supply of output can be adjusted and generally the high-performance source of stable pressure can only be made, and complex circuit.Then purchase equipment in addition as the need constant current source, therefore all purposes is single, the expense height.

The purpose of this utility model is that design is a kind of of many uses, can make reference voltage and can doublely do the high-performance source of stable pressure again, or as the electric equipment of constant current source to storage battery and battery charge, and voltage, range of current is adjustable.

Scheme of the present utility model is as follows: form the pressure-stabilizing constant flow regulating circuit by integrated package of pressure-stabilizing IC and R1, W1, R2, W2, C3, switch K1, an output (1) end of IC and the arm of double-point double-throw switch K1 join, and another output terminal (2) of IC and another arm of K switch 1 join.When K1 is positioned at position a-a ' time R1, W1, IC, formation constant current duty; When K1 is positioned at position b-b ' time, R1, R2, IC, W2, C3 constitute the voltage stabilizing duty.Constant current, voltage stabilizing output indication all can be adjusted.By R3, R4 and switch K2(double-point double-throw switch), gauge outfit M(A/V) form output indication loop.Under the constant current duty, K2 is positioned at position a-a ', and entire circuit is formed the constant current output regulating circuitry; Under the voltage stabilizing duty, K2 is positioned at b-b ' position, and entire circuit constitutes the voltage stabilizing output regulating circuitry.Gauge outfit M(A/V) both makes the voltage indicating gauge, also made the electric current indicating gauge, be carved with voltage, two kinds of scales of electric current.Therefore, only with two switch K1, K2, a gauge outfit, promptly be convertible into two kinds of duties, the size of step-less adjustment voltage or electric current independently respectively, can make stabilized voltage supply and use, can make constant current source again and use, gauge outfit can the indicator current size, also but the instructed voltage height is flexible and convenient to use.And simple in structure, more existing stabilized voltage supply components and parts are few, low, the reliable operation of cost.Be particularly useful for family, laboratory, school, as stabilized voltage supply, reference power supply or make constant current source, of many uses to the charging of all kinds of baby batteries, little storage battery.

Below in conjunction with accompanying drawing the utility model is illustrated:

Accompanying drawing is embodiment of the present utility model.

Output gauge outfit M(A/V is arranged on the panel) be carved with electric current and two kinds of scales of voltage, adjusting knob W1 is an electric current output adjusting knob; W2 is a voltage output adjusting knob; R4 is the scale sensitivity adjusting knob of gauge outfit M, and two output wiring terminals are housed.

The power converting circuit that the input power supply constitutes through transformer B and D1-D4, C2 is reduced in the voltage range of application DC voltage stably.By integrated package of pressure-stabilizing IC(LM317 * 2) and switch K1, resistance R 1, R2, W1, W2, C3 form the pressure-stabilizing constant flow regulating circuit.When switch was positioned at a-a ' position, the common point of IC (1) end and D5 directly joined with the resistance R 1, the W1 that are connected in series, and another output terminal W1 of IC and the common point of K2 join, and constitute the constant current duty, and electric current can be regulated by W1.When switch K1 is positioned at position b-b ' time, common point and the resistance R 2 of the output terminal of IC (1) and D5 are directly joined, and the common point of another output terminal of IC and R2 and W2, C3 joins, and is the voltage stabilizing duty.When the constant current duty, by K2, R3, R4 gauge outfit M(A/V), in the output indicating circuit formed of D6, K2 is positioned at position a-a ', adjustable resistance W1 and R3 and M(A/V) common point directly join, R3 and M(A/V) the other end be connected on before the D6, constitute the constant current output regulating circuitry, promptly make constant current source and use.When the voltage stabilizing duty, K2 is positioned at position b-b '; Resistance R 4 and gauge outfit M(A/V) serial connection is connected across the common point of R3 and diode D6 and with reference between the ground, formation voltage stabilizing output regulating circuitry is promptly made stabilized voltage supply and used.

Claims

1, a kind of pressure-stabilizing constant flow power supply of using more, comprise by transformer B, the power conversion loop that rectifier bridge D1-D4 and C1 constitute, it is characterized in that above-mentioned power conversion loop (B, D1-D4, C1) with by regulator block IC, switch K1, R1, R2, W1, the pressure-stabilizing constant flow regulating circuit that W2 forms reaches by graduation apparatus M (A/V) and R3, R4, the output indicating circuit that switch K2 and D6 form constitutes the above-mentioned pressure-stabilizing constant flow power supply of using more, the switch K1 of pressure-stabilizing constant flow regulating circuit is positioned at position a-a ' time, regulator block IC and R1, W1 constitutes the constant flow regulation circuit, the switch K2 of above-mentioned output indicating circuit is positioned at a-a ' position simultaneously, graduation apparatus M (A/V) and R3 cross-over connection in parallel is between W1 and D6, and circuit is the constant current output regulating circuitry; When the switch K1 of above-mentioned pressure-stabilizing constant flow regulating circuit is positioned at b-b ' position, regulator block IC and W2, R2, C3 constitute the voltage stabilizing regulating circuit, the switch K2 in output indication loop also is positioned at b-b ', and M (A/V) and R4 series connection are connected across the common point of resistance R 3 and diode D6 and with reference between the ground.