CN102665310A

CN102665310A - Low-power emergency fluorescent lamp

Info

Publication number: CN102665310A
Application number: CN2012101421352A
Authority: CN
Inventors: 黄勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-09
Filing date: 2012-05-09
Publication date: 2012-09-12

Abstract

The invention belongs to the field of electronic technique and emergency lighting and relates to a low-power emergency fluorescent lamp. The emergency fluorescent lamp is composed of a 6V direct-current power supply, a feedback type oscillating and biasing circuit, a boosting and lighting circuit and a direct-current power supply indicating circuit. The dependence on power supply is higher and higher at present, so temporary power failures can bring about great influences or cause losses to the normal work, life and student learning. The low-power emergency fluorescent lamp provided by the invention is suitable for a 3-4W fluorescent lamp, can meet the requirement of emergency lighting when a power supply line is temporarily switched off, and is also suitable for emergency lighting of various small public places or emergency lighting for fire protection. If four D manganese-zinc dry batteries are used, the lighting time of the low-power emergency fluorescent lamp is more than 120 minutes.

Description

Small-power Emergency daylight lamp tool

Technical field

The invention belongs to electronic technology and emergency lighting field, relate to a kind of small-power Emergency daylight lamp tool.

Background technology

Improving constantly of Along with people's daily life level, people are also increasingly high to the dependence of power supply, in case temporary interruption takes place, bring very big influence or cause some economic losses for normal work, life and student's study.Small-power Emergency daylight lamp tool is the emergency lighting that is independent of outside the utility grid.

Small-power Emergency daylight lamp tool of the present invention is fit to adapted 3～4W fluorescent lamp; The requirement of emergency lighting when it can tackle the supply lines temporary interruption; Also be applicable to the emergency lighting or the fire emergency of various small-sized public places; If use 4 joint 1# MnZn dry cells, this small-power Emergency daylight lamp tool lighting hours was greater than 120 minutes.

Below specify the related in force correlation technique content of this small-power Emergency daylight lamp tool.

Summary of the invention

Goal of the invention and beneficial effect: people are increasingly high to the dependence of power supply now, in case temporary interruption takes place, bring very big influence or cause some economic losses for normal work, life and student's study.Small-power Emergency daylight lamp tool of the present invention is fit to adapted 3～4W fluorescent lamp; The requirement of emergency lighting when it can tackle the supply lines temporary interruption; Also be applicable to the emergency lighting or the fire emergency of various small-sized public places; If use 4 joint 1# MnZn dry cells, this small-power Emergency daylight lamp tool lighting hours was greater than 120 minutes.

The circuit working principle: the circuit of small-power Emergency daylight lamp tool is formed Darlington by NPN transistor VT1, VT2, and the vibration winding L 1 of oscillation step-up transformer T, feedback winding L 2 constitute the feedback type oscillating circuit.Linear potentiometer RP and resistance R 2 provide the offset operation electric current for Darlington, and linear adjustment potentiometer RP is used to control the power output of Emergency daylight lamp tool.Winding L 3 outputs of boosting of oscillation step-up transformer are greater than 220V pulse ac electricity, and the fluorescent material and the mercuryvapour that are used to pull the trigger in the fluorescent lamp are lighted fluorescent lamp RGD.

Technical scheme: small-power Emergency daylight lamp tool, it by 6V DC power supply, feedback type oscillating circuit and biasing circuit, boost and lighting circuit, DC power supply indicating circuit are formed, its characteristic comprises:

Feedback type oscillating circuit and biasing circuit: vibration winding L 1 and feedback winding L 2, resistance R 2 and linear potentiometer RP by NPN transistor VT1, NPN transistor VT2, oscillation step-up transformer T form; The base stage of NPN transistor VT1 connects the end of the same name of oscillation step-up transformer T feedback winding L 2; The end of wiring property potentiometer RP behind the different name end series resistor R2 of oscillation step-up transformer T feedback winding L 2; The anodal VCC of the other end of linear potentiometer RP and lever arm connection circuit thereof; The collector electrode of the collector electrode of NPN transistor VT1 and NPN transistor VT2 connects the different name end of the vibration winding L 1 of transformer T; The emitter of NPN transistor VT1 connects the base stage of NPN transistor VT2, the emitter connection circuit ground GND of NPN transistor VT2, the anodal VCC of vibration winding L 1 termination circuit of the same name of transformer T;

Boost and lighting circuit: the winding L 3 of boosting by oscillation step-up transformer T is formed with fluorescent lamp RGD; A boost termination of winding L 3 of oscillation step-up transformer T connects the end of fluorescent lamp RGD, oscillation step-up transformer T the boost other end of winding L 3 and the other end connection circuit ground GND of fluorescent lamp RGD.

The anodal VCC of connection circuit links to each other behind the 6V dc power anode serial connection mains switch SW, and the 6V dc power cathode links to each other with circuit ground GND.

Description of drawings

Accompanying drawing 1 is the circuit working schematic diagram of small-power Emergency daylight lamp tool; T in the accompanying drawing 1 is an oscillation step-up transformer.

Embodiment

Specification requirement according to the components and parts of the circuit working schematic diagram of the small-power Emergency daylight lamp tool shown in the accompanying drawing 1 and description of drawings and the following stated is implemented, and can realize the present invention.

The selection of components and parts and technical parameter

VT1 is a NPN transistor, and the model of selecting for use is a power transistor in the NPN types such as 2SC9013;

VT2 is a NPN type high power transistor, and selecting model for use is 3DD59A, β >=80;

The resistance of resistance R 1 is 510 Ω; The resistance of resistance R 2 is that 220 Ω, power are 1/4W; RP is a linear potentiometer, and its resistance is 2.7K Ω;

LED selects ￠ 5 red light emitting diodes for use;

RGD is a fluorescent lamp, and selecting power for use is the fluorescent lamp of 3～4W;

The 6V DC power supply can use 4 joint 1# MnZn dry cells, also can select 6V, 4AH storage battery for use;

SW is a mains switch, selects single-pole single-throw switch (SPST) for use.

Circuit production main points and circuit debugging

The making of oscillation step-up transformer T: the magnetic core of transformer T is selected U type ferrite magnetic core or ring type magnetic core for use; Also available common E type or F type silicon steel sheet replace, but conversion efficiency will reduce, and vibration winding L 1, feedback winding L 2 are all selected the enamelled wire of ￠ 0.3～0.4mm for use; The coiling number of turns is respectively 45 circles, 30 circles; The winding L of boosting 3 is selected the enamelled wire of ￠ 0.12～0.15mm for use, and the coiling number of turns is 800 circles, and winding frame can use the thick hardboard of 1mm to make; Two groups of elementary windings and secondary boosting will add one deck insulation film between the winding, and note the end sign of the same name of two groups of primary coils;

The circuit of small-power Emergency daylight lamp tool is as long as the components and parts performance of using is intact; Annexation according to components and parts shown in the accompanying drawing 1 is welded; The physics wiring is conscientiously checked and check errorless after, the circuit of this device need not debugged and get final product operate as normal;

As long as components and parts are good, welded and installed is errorless, can hear slight frizzle after the energising, this explanation circuit starting of oscillation; If not starting of oscillation of circuit can be exchanged the two ends of vibration winding L 1 or feedback winding L 2 and tried it once again;

Linear adjustment potentiometer RP can control the power output of small-power Emergency daylight lamp tool; During circuit debugging adjustable potentiometer RP lever arm is spun on the centre position, can makes fluorescent lamp RGD luminous behind the connection 6V DC power supply, adjustment linear potentiometer RP makes the complete machine operating current at 160～210mA;

Use 4 joint 1# MnZn dry cells, small-power Emergency daylight lamp tool lighting hours is greater than 120 minutes, when finding that phenomenons such as dim or flicker appear in fluorescent lamp, should in time change battery, or in time charge a battery.

Claims

1. small-power Emergency daylight lamp tool, it by 6V DC power supply, feedback type oscillating circuit and biasing circuit, boost and lighting circuit, DC power supply indicating circuit are formed, its characteristic comprises:

Feedback type oscillating circuit and biasing circuit are made up of vibration winding L 1 and feedback winding L 2, resistance R 2 and the linear potentiometer RP of NPN transistor VT1, NPN transistor VT2, oscillation step-up transformer T; The base stage of NPN transistor VT1 connects the end of the same name of oscillation step-up transformer T feedback winding L 2; The end of wiring property potentiometer RP behind the different name end series resistor R2 of oscillation step-up transformer T feedback winding L 2; The anodal VCC of the other end of linear potentiometer RP and lever arm connection circuit thereof; The collector electrode of the collector electrode of NPN transistor VT1 and NPN transistor VT2 connects the different name end of the vibration winding L 1 of transformer T; The emitter of NPN transistor VT1 connects the base stage of NPN transistor VT2, the emitter connection circuit ground GND of NPN transistor VT2, the anodal VCC of vibration winding L 1 termination circuit of the same name of transformer T;

Boost and lighting circuit is made up of with fluorescent lamp RGD the winding L 3 of boosting of oscillation step-up transformer T; A boost termination of winding L 3 of oscillation step-up transformer T connects the end of fluorescent lamp RGD, oscillation step-up transformer T the boost other end of winding L 3 and the other end connection circuit ground GND of fluorescent lamp RGD.

2. small-power Emergency daylight lamp tool according to claim 1 is characterized in that: the anodal VCC of connection circuit links to each other behind the 6V dc power anode serial connection mains switch SW, and the 6V dc power cathode links to each other with circuit ground GND.