CN2384357Y - Three-functional charger - Google Patents

Abstract

A three-function charger, which relates to an improved invention of the charger, includes a transformer B, a rectifier circuit, and a battery holder, and two two-pole four-throw switches K1, K2 and two-pole two-throw switch K3 are arranged in the charging circuit, according to the utility model The new theme design three-function charger can realize the functions of adjusting current charging, voltage testing, and AC/DC lighting for different batteries.

Description

Three function charger

The utility model relates to an improved invention of a charger.

In the existing technology, the charger is usually relatively simple, and is generally only used for charging secondary batteries, and the charging effect is not good. The circuit structure is usually output from a transformer and then output to the battery holder through a rectifier circuit. The function is single. Dry batteries cannot be charged, especially for Shuanglu brand batteries.

In view of the problems existing in the prior art, the utility model aims to provide a device with an adjustable circuit current, which can roughly test the power of the battery by using the brightness of the bulb bulb, and the user can judge whether the battery needs to be charged or whether the battery is fully charged. At the same time, it can realize the purpose of charging a variety of batteries and lighting AC and DC lights.

The technical scheme of the utility model is as follows: including a transformer B, a rectifier circuit, and a battery holder, one end of the secondary coil of the transformer B is connected to the common point of the two-pole four-throw switch K2, and 1 end of K2 is connected to the input end of the rectifier circuit, and the end of K2 Terminal 3 is connected to the input terminal of the rectifier circuit through resistors R1 and R2, terminal 2 of K2 is connected between R1 and R2, terminal 1 of the lower row of K1 is connected to the output terminal of the rectifier circuit, and the common point of the lower row of K1 is connected to the positive pole of the battery holder , the two charging negative poles of the battery holder are connected to the right row 1 terminal of the two-pole two-throw switch K3, one charging negative pole is connected to the left row common point of K3, the left row common point of K3 is connected to the middle position of the secondary coil of the transformer B, and the K3 The right row of common points is connected to the other end of the secondary coil of transformer B. The 2 ends of the lower row of K1 are connected to the negative electrode charged by the second cell of the battery holder through the light bulb L, the 2 ends of the lower row of K1 are short-circuited with the common point of the upper row, and the 3 ends of the upper row of K1 are connected to the input end of the rectifier circuit through the resistor R4 .

The three-function charger is designed according to the theme of the utility model. By adjusting its charging current, it can charge ordinary waste batteries, and can also charge multiple sections at the same time. It can also detect whether the battery is fully charged and switch on the lamp.

The utility model has the following accompanying drawings

Fig. 1 is the working principle diagram of the utility model circuit

Accompanying drawing has shown operating principle of the present utility model, further describe its implementation rate below in conjunction with accompanying drawing: comprise transformer B, rectifier circuit and be made up of D1, R1, R2, R3, battery holder, one end of described transformer B auxiliary coil is connected The common point of the two-pole four-throw switch K2, terminal 1 of K2 is connected to the input terminal of the rectifier circuit, terminal 3 of K2 is connected to the input terminal of the rectifier circuit through resistors R1 and R2, terminal 2 of K2 is connected between R1 and R2, K1 Terminal 1 of the lower row is connected to the output terminal of the rectifier circuit, and the common point of the lower row of K1 is connected to the positive pole of the battery holder. The left common point of K3 is connected to the middle position of transformer B secondary coil, and the right row common point of K3 is connected to the other end of transformer B secondary coil. The 2 ends of the lower row of K1 are connected to the negative electrode charged by the second section of the battery holder through the light bulb L, the 2 ends of the lower row of K1 are short-circuited with the common point of the upper row, and the 3 ends of the upper row of K1 are connected to the input end of the rectifier circuit through the resistor R4 .

Two-knife four-throw switch K1 is the functional switch of the three-function charger. When K1 is at gear 1, it charges the battery. When K1 is at gear 2, it uses the battery to light the lamp. Electric lighting, when K1 is in the 4th gear, it is to turn off the "three-purpose device" to stop working. The two-knife four-throw switch K2 is a shift switch for charging current. When K1 is in gear 1, only the step-down resistor R3 is connected to the charging circuit. At this time, ordinary 1# and 2# dry batteries are charged. When K2 is in gear 2, R2 and R3 are connected to the charging circuit. For 5# and 7# dry batteries Charging, medium current charging for nickel-separated batteries is also in this gear. When K2 is in gear 3, it is charging for nickel-separated batteries with low current. When lighting on AC, K2 is also the switching switch for AC lighting, dimming, and K3 is for charging one or two batteries. Battery conversion switch, when K3 is in gear 1, the charger will charge two batteries, and when K3 is in gear 2, the charger will charge one battery. The resistance values of R1, R2, and R3 are selected to be very small, so that the voltage drop inside the circuit is very small.

Claims (2)

1. A three-function charger, comprising a transformer B, a rectifier circuit, and a battery holder, characterized in that: one end of the secondary coil of the transformer B is connected to the common point of the two-pole four-throw switch K2, and one end of K2 is connected to the rectifier circuit The input terminal of K2, the 3 terminals of K2 are connected to the input terminal of the rectifier circuit through resistors R1 and R2, the 2 terminals of K2 are connected between R1 and R2, the lower row 1 terminal of K1 is connected to the output terminal of the rectifier circuit, the lower row of K1 is common The point is connected to the positive pole of the battery holder, the two charge negative poles of the battery stand are connected to the right row 1 terminal of the two-pole two-throw switch K3, one charge negative pole is connected to the left row common point of K3, and the left row common point of K3 is connected to the secondary side of the transformer B. In the middle of the coil, the right row common point of K3 is connected to the other end of the secondary coil of transformer B. 2. The three-function charger as claimed in claim 1, characterized in that: the lower row 2 terminals of K1 are connected to the negative pole charged by the two battery holders through the light bulb L, and the lower row 2 terminals of K1 are connected to the upper row common point Short circuit, the upper 3 terminals of K1 are connected to the input terminal of the rectifier circuit through the resistor R4.