CN203368873U

CN203368873U - Single-battery voltage-boosting type light emitting diode (LED) flashlight

Info

Publication number: CN203368873U
Application number: CN 201320507406
Authority: CN
Inventors: 吴建堂
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-20
Filing date: 2013-08-20
Publication date: 2013-12-25
Anticipated expiration: 2023-08-20

Abstract

The utility model discloses a single-battery voltage-boosting type light emitting diode (LED) flashlight, which is characterized by comprising a 1.5V battery, a complementary multivibrator circuit, a vibration frequency regulating circuit, a voltage boosting circuit, a rectification and filtering circuit and an LED loop, wherein the complementary multivibrator circuit and the vibration frequency regulating circuit are composed of a VPN-type triode VT1, a PNP-type triode VT2, a high-frequency transformer primary coil L1, a potentiometer RP, a resistor R1 and a capacitor C1; the voltage boosting circuit and the rectification and filtering circuit are composed of a high-frequency transformer secondary coil L2, a Schottky diode D1 and an electrolytic capacitor C2; and the LED loop is composed of four light emitting diodes LED1-LED4. The single-battery voltage-boosting type LED flashlight overcomes defects such as great power consumption, low brightness and the like of a traditional two-battery incandescent lamp flashlight. The single-battery voltage-boosting type LED flashlight is a novel light source, and has the characteristics of high light emitting efficiency, energy saving, environmental protection, practicability and the like.

Description

One batteries boost type LED torch

Technical field

The utility model belongs to electronics and DC inverter technical field, is about an a kind of batteries boost type LED torch.

Background technology

Two traditional batteries incandescent lamp flashlight general work electric current >=240mA, and the flashlight operating current of making of LED approximately has 60～80mA, the power that the ordinary incandescent lamp flashlight consumes is approximately more than 6 times of LED flashlight power, and luminous brightness also can not show a candle to the LED flashlight.

In order to overcome two traditional batteries incandescent lamp flashlights, to exist power consumption large, and the defects such as brightness is low, the utility model is only used a joint 1.5V battery just can light 4 super brightness white light-emitting diodes, is applicable to very much at home, camps, the night lighting such as out on tours.A batteries boost type LED torch described in the utility model is a kind of new type light source, has the characteristics such as luminous efficiency is high, energy-saving and environmental protection, practicality.

Below describe a batteries boost type LED torch described in the utility model related relevant technologies content in implementation process in detail.

The utility model content

Goal of the invention and beneficial effect: in order to overcome two traditional batteries incandescent lamp flashlights, to exist power consumption large, and the defects such as brightness is low, the utility model is only used a joint 1.5V battery just can light 4 super brightness white light-emitting diodes, is applicable to very much at home, camps, the night lighting such as out on tours.A batteries boost type LED torch described in the utility model is a kind of new type light source, has the characteristics such as luminous efficiency is high, energy-saving and environmental protection, practicality.

The circuit working principle: a batteries boost type LED torch by the complementary type multi-resonant oscillating circuit, boost and current rectifying and wave filtering circuit three parts form.The complementary type multi-resonant oscillating circuit is comprised of NPN type triode VT1, positive-negative-positive triode VT2, and the frequency of oscillation of oscillating circuit is about 2kHz.The primary coil L1 of high frequency transformer T is the load of complementary type multi-resonant oscillating circuit, the secondary coil L2 of high frequency transformer T is step-up coil, the high-frequency pulse voltage of output obtains about 6.5V direct voltage after Schottky diode D1 halfwave rectifier and electrochemical capacitor C2 filtering, and the 6.5V direct voltage is for lighting 4 LED 1～LED4.

Technical characterictic: a batteries boost type LED torch, it comprises 1.5V battery, complementary type multi-resonant oscillating circuit and frequency of oscillation regulating circuit, booster circuit and current rectifying and wave filtering circuit, LED circuit, it is characterized in that:

Complementary type multi-resonant oscillating circuit and frequency of oscillation regulating circuit: it is by NPN type triode VT1, positive-negative-positive triode VT2, high frequency transformer primary coil L1, potentiometer RP, resistance R 1 and capacitor C 1 form, the end of the base stage connecting resistance R1 of NPN type triode VT1 and the end of potentiometer RP, the anodal VCC of the other end of potentiometer RP and movable end connection circuit thereof, the other end of resistance R 1 connects the collector electrode of positive-negative-positive triode VT2 by capacitor C 1, the collector electrode of NPN type triode VT1 connects the base stage of positive-negative-positive triode VT2, the emitter connection circuit ground GND of NPN type triode VT1, the anodal VCC of the emitter connection circuit of positive-negative-positive triode VT2, the collector electrode of positive-negative-positive triode VT2 connects the end of high frequency transformer primary coil L1, the other end connection circuit ground GND of high frequency transformer primary coil L1,

Booster circuit and current rectifying and wave filtering circuit: it is comprised of high frequency transformer secondary coil L2, Schottky diode D1, electrochemical capacitor C2, the positive pole of the termination Schottky diode D1 of high frequency transformer secondary coil L2, the negative pole of Schottky diode D1 connects the positive pole of electrochemical capacitor C2, and the other end of the secondary coil L2 of high frequency transformer is connected with the negative pole of electrochemical capacitor C2;

LED circuit: the positive pole of the positive pole of LED 1 and LED 3 connects the negative pole of Schottky diode D1, the positive pole of the negative pole difference sending and receiving optical diode LED2 of the negative pole of LED 1, LED 3, the positive pole of LED 4, the negative pole of the negative pole of LED 2 and LED 4 connects the negative pole of electrochemical capacitor C2;

1.5V anode is by the anodal VCC of mains switch SW connection circuit, the 1.5V battery cathode is connected with circuit ground GND.

The accompanying drawing explanation

Accompanying drawing is the embodiment circuit working schematic diagram that the utility model provides a batteries boost type LED torch; In accompanying drawing, the 1.5V battery cathode is connected with circuit ground GND.

Embodiment

According to batteries boost type LED torch circuit working schematic diagram and an accompanying drawing explanation shown in the drawings, and according to annexation between components and parts in the described each several part circuit of utility model content, and the components and parts technical parameter described in execution mode requires and the circuit production main points are implemented to realize the utility model, below in conjunction with embodiment, correlation technique of the present utility model is further described.

The selection of components and parts and technical parameter

VT1 is NPN type triode, and the model of selecting is 2SC9013;

VT2 is the positive-negative-positive triode, and the model of selecting is 3AX31;

D1 is Schottky diode, parameters selection operating current >=1A;

Resistance R 1 is selected metalfilmresistor, and resistance is 6.2K Ω;

RP is potentiometer, and its resistance is 68K Ω;

C1 is magnetic sheet electric capacity, and capacity is 1000PF; C2 is electrochemical capacitor, and its capacity is 470 μ F/16V;

SW is mains switch, selects single-pole single-throw switch (SPST);

1.5V No. 2 MnZn dry cells of the used single-unit of battery.

Making main points and the circuit debugging of circuit

The making of high frequency transformer T: the silicon steel sheet that uses the transistor output transformer, the high strength enamelled wire layering that primary coil L1 is 0.21mm with diameter is flat around 100 circles, the high strength enamelled wire that secondary coil L2 is 0.21mm with diameter, around 150 circles, needs to serve as a contrast one deck insulation film between primary coil L1 and secondary coil L2;

The circuit structure of cause one batteries boost type LED torch is very simple, comparison is easy, and general as long as the components and parts performance of using is intact, the physical connection of components and parts is correct, and circuit does not need just to debug and can work;

In circuit debugging, the 1.5V battery can be first replaces with the adjustable stabilized voltage supply of output current >=0.8A, and Schottky diode D1 cuts and can not use the ordinary silicon rectifier diode, otherwise conversion efficiency will decrease;

Adjust the brightness that potentiometer RP can change LED, if when the voltage at electrochemical capacitor C2 two ends is less than 6.5V, can suitably reduce the resistance of potentiometer RP;

The complete machine total current is controlled at the 80mA left and right and is advisable.

Claims

1. a batteries boost type LED torch, it comprises 1.5V battery, complementary type multi-resonant oscillating circuit and frequency of oscillation regulating circuit, booster circuit and current rectifying and wave filtering circuit, LED circuit, it is characterized in that:

Described complementary type multi-resonant oscillating circuit and frequency of oscillation regulating circuit are by NPN type triode VT1, positive-negative-positive triode VT2, high frequency transformer primary coil L1, potentiometer RP, resistance R 1 and capacitor C 1 form, the end of the base stage connecting resistance R1 of NPN type triode VT1 and the end of potentiometer RP, the anodal VCC of the other end of potentiometer RP and movable end connection circuit thereof, the other end of resistance R 1 connects the collector electrode of positive-negative-positive triode VT2 by capacitor C 1, the collector electrode of NPN type triode VT1 connects the base stage of positive-negative-positive triode VT2, the emitter connection circuit ground GND of NPN type triode VT1, the anodal VCC of the emitter connection circuit of positive-negative-positive triode VT2, the collector electrode of positive-negative-positive triode VT2 connects the end of high frequency transformer primary coil L1, the other end connection circuit ground GND of high frequency transformer primary coil L1,

Described booster circuit and current rectifying and wave filtering circuit are comprised of high frequency transformer secondary coil L2, Schottky diode D1, electrochemical capacitor C2, the positive pole of the termination Schottky diode D1 of high frequency transformer secondary coil L2, the negative pole of Schottky diode D1 connects the positive pole of electrochemical capacitor C2, and the other end of the secondary coil L2 of high frequency transformer is connected with the negative pole of electrochemical capacitor C2;

The positive pole of the LED 1 in described LED circuit and the positive pole of LED 3 connect the negative pole of Schottky diode D1, the positive pole of the negative pole difference sending and receiving optical diode LED2 of the negative pole of LED 1, LED 3, the positive pole of LED 4, the negative pole of the negative pole of LED 2 and LED 4 connects the negative pole of electrochemical capacitor C2;

Described 1.5V anode is by the anodal VCC of mains switch SW connection circuit, and the 1.5V battery cathode is connected with circuit ground GND.