CN203675405U

CN203675405U - 12V direct-current power lighting lamp

Info

Publication number: CN203675405U
Application number: CN201420053995.3U
Authority: CN
Inventors: 周云侠
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-01-27
Filing date: 2014-01-27
Publication date: 2014-06-25
Anticipated expiration: 2024-01-27

Abstract

The utility model provides a 12V direct-current power lighting lamp, which consistes of a 12V direct-current power supply, an oscillating circuit, a field effect transistor driving circuit and a boosting coil and a lighting lamp circuit, wherein the field effect transistor driving circuit consists of an enhanced N-channel field effect transistor VT2 and a transistor VT1; the oscillating circuit consists of an NPN type transistor VT1, a resistor R1, an NPN type transistor VT3 and a single-directin silicon controlled rectifier SCR; the boosting coil and the lighting lamp circuit consist of a boosting coil L2 of the transformer T1, a capacitor C1 and a fluorescent lamp H. The direct-current power lighting lamp is spare lighting equipment independent from the power grid; the common emergency lighting equipment mostly takes storage cells as a power source; the 12V direct-current power lighting lamp provided by the invention is applicable for use with the 6-8W fluorescent lamp in a matching way, and can satisfy requirement on emergency lighting during the temporary electricity interruption of supply lines; and additionally, the domestic emergency fluorescent lamp is also applicable for emergency lighting or firefighting emergency lighting in various small public sites.

Description

12V DC power supply illuminating lamp

Technical field

The utility model belongs to emergency lighting technical field, relates to a kind of 12V DC power supply illuminating lamp.

Background technology

Along with people's daily life flatly improves constantly, people are more and more higher to the dependence of power supply, once power failure brings very large impact or cause some losses to normal work, life and Students ' Learning.DC power supply fluorescent lamp can be independent of the lighting apparatus outside utility grid, and the multiplex maintenance free cell of conventional emergency-lighting set is as DC power supply.

12V DC power supply illuminating lamp described in the utility model is applicable to adapted 6～8W fluorescent lamp, it can tackle the supply lines short time have a power failure time emergency lighting requirement, also be applicable to emergency lighting or the fire emergency of various small-sized public places, if use 8 joint 1# MnZn dry cells, this 12V DC power supply illuminating lamp lighting hours is greater than 120 minutes.

Below describe 12V DC power supply illuminating lamp described in the utility model related correlation technique content in implementation process in detail.

Utility model content

Goal of the invention and beneficial effect: along with people's daily life flatly improves constantly, people are more and more higher to the dependence of power supply, once power failure brings very large impact or cause some losses to normal work, life and Students ' Learning.DC power supply fluorescent lamp can be independent of the lighting apparatus outside utility grid, and the multiplex maintenance free cell of conventional emergency-lighting set is as DC power supply.12V DC power supply illuminating lamp described in the utility model is applicable to adapted 6～8W fluorescent lamp, and it can tackle the requirement of supply lines short time emergency lighting while having a power failure, is also applicable to emergency lighting or the fire emergency of various small-sized public places.

Circuit working principle: in the time that circuit is initial, NPN transistor VT1 emitter drives the grid of enhancement mode field effect transistor VT2 to uprise, and makes enhancement mode field effect transistor VT2 conducting.At this moment transformer T1 primary coil L1 shows as an inductance, electric current oblique ascension progressively in inductance.When the Current rise passing through in transformer T1, enhancement mode field effect transistor VT2 is to 0.62/Rs ampere-hour, NPN transistor VT3 is by conducting.The control electrode potential of the base stage of NPN transistor VT1 and unidirectional controllable silicon S CR is pulled to electronegative potential, cause unidirectional controllable silicon S CR to trigger, unidirectional controllable silicon S CR the rapidly grid of driving enhancement mode field effect transistor VT2 are zero.At this moment, be stored in energy mutual inductance in transformer T1 primary coil L1 to secondary coil L2, fluorescent lamp H be stimulated and luminous.At this moment unidirectional controllable silicon S CR still remains stationary, until transformer T1 all discharges its energy to fluorescent lamp H.The reverse current now producing in transformer T1 flow back into enhancement mode field effect transistor VT2, cause the grid level of enhancement mode field effect transistor VT2 slightly negative, because having distributed capacitance, enhancement mode field effect transistor VT2 exists, the anode of unidirectional controllable silicon S CR thereby also change are negative, unidirectional controllable silicon S CR cut-off, enhancement mode field effect transistor VT2 conducting again, starts the vibration in next week.According to the component parameters of recommending in embodiment, circuit oscillation frequency is about 30kHz.

Technical scheme: 12V DC power supply illuminating lamp, it comprises that 12V DC power supply, oscillating circuit, field effect transistor promote circuit, step-up coil and fluorescent lamp loop, is characterized in that:

Oscillating circuit: it is by NPN transistor VT1, resistance R 1, NPN transistor VT3 and unidirectional controllable silicon S CR composition, one end of base stage connecting resistance R1 of NPN transistor VT1 and the control utmost point of the collector electrode of NPN transistor VT3 and unidirectional controllable silicon S CR, the anodal VCC of collector electrode connection circuit of the other end of resistance R 1 and NPN transistor VT1, the emitter order of NPN transistor VT1 is to the anode of controllable silicon SCR, can the negative electrode of unidirectional controllable silicon S CR and the emitter connection circuit of NPN transistor VT3 ground GND, the base stage of NPN transistor VT3 connects the source electrode of enhancement mode N channel field-effect pipe VT2,

Field effect transistor promotes circuit: it is made up of enhancement mode N channel field-effect pipe VT2 and transformer T1, the drain electrode of enhancement mode N channel field-effect pipe VT2 connects one end of transformer T1 primary coil L1, the anodal VCC of other end connection circuit of transformer T1 primary coil L1, the grid of enhancement mode N channel field-effect pipe VT2 connects the emitter of NPN transistor VT1, and the source electrode of enhancement mode N channel field-effect pipe VT2 is by resistance R 2 connection circuit ground GND;

Step-up coil and fluorescent lamp loop: it is made up of transformer T1 step-up coil L2, capacitor C 1 and fluorescent lamp H, one end of transformer T1 step-up coil L2 connects one end of fluorescent lamp H filament by capacitor C 1, the other end of another termination fluorescent lamp H filament of transformer T1 step-up coil L2;

The positive pole of 12V DC power supply is connected with circuit anode VCC, and the negative pole of 12V DC power supply is connected with circuit ground GND.

Brief description of the drawings

Accompanying drawing 1 is the embodiment circuit working schematic diagram that the utility model provides a 12V DC power supply illuminating lamp.

Embodiment

According to 12V DC power supply lighting lamp circuit fundamental diagram and brief description of the drawings shown in accompanying drawing 1, and according to annexation between components and parts in the each several part circuit described in utility model content, and the components and parts technical parameter described in execution mode requires and 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 technical parameter of components and parts and selection requirement

VT1, VT3 are NPN transistor, and the model of selecting is 2SC9013, require multiplication factor β >=150;

VT2 is enhancement mode N channel field-effect pipe, and the model of selecting is IRFZ22;

SCR is one-way SCR, and the model of selecting is 2N6027;

The resistance of resistance R 1 is 12K Ω; The resistance of resistance R 2 is 0.51 Ω, and power is 2W;

C1 is electric capacity, selects electric capacity of the dacron, and its capacity is 620PF, and withstand voltage is 1000V;

H is fluorescent lamp, the optional fluorescent lamp that is 6～8W with power;

DC power supply is selected 12V, 7AH maintenance free cell.

Circuit production main points and circuit debugging

The making of transformer T1: magnetic core is selected E type ferrite magnetic core, or ring-like FERRITE CORE, primary coil L1 uses ￠ 0.33～0.41mm enamelled wire around 33 circles, and step-up coil L2 uses ￠ 0.15mm enamelled wire around 400～450 circles;

The circuit of 12V DC power supply illuminating lamp if use components and parts performance intact, weld according to the annexation of components and parts shown in accompanying drawing 1, physics wiring is conscientiously checked and check errorless after, the circuit of this device does not need to debug and can normally work;

Resistance R 1 is used for controlling the brightness of fluorescent lamp H, and resistance R 1 resistance hour can improve the switching energy in transformer T1, and fluorescent lamp H luminosity is increased;

When DC power supply is 12V, the frequency of oscillation of circuit is about 30kHz, and in the time of 12V DC power supply, current sinking is 185mA.

Claims

1. a 12V DC power supply illuminating lamp, it comprises that 12V DC power supply, oscillating circuit, field effect transistor promote circuit, step-up coil and illuminating lamp loop, is characterized in that:

Described oscillating circuit is by NPN transistor VT1, resistance R 1, NPN transistor VT3 and unidirectional controllable silicon S CR composition, one end of base stage connecting resistance R1 of NPN transistor VT1 and the control utmost point of the collector electrode of NPN transistor VT3 and unidirectional controllable silicon S CR, the anodal VCC of collector electrode connection circuit of the other end of resistance R 1 and NPN transistor VT1, the emitter order of NPN transistor VT1 is to the anode of controllable silicon SCR, can the negative electrode of unidirectional controllable silicon S CR and the emitter connection circuit of NPN transistor VT3 ground GND, the base stage of NPN transistor VT3 connects the source electrode of enhancement mode N channel field-effect pipe VT2,

Described field effect transistor promotes circuit and is made up of enhancement mode N channel field-effect pipe VT2 and transformer T1, the drain electrode of enhancement mode N channel field-effect pipe VT2 connects one end of transformer T1 primary coil L1, the anodal VCC of other end connection circuit of transformer T1 primary coil L1, the grid of enhancement mode N channel field-effect pipe VT2 connects the emitter of NPN transistor VT1, and the source electrode of enhancement mode N channel field-effect pipe VT2 is by resistance R 2 connection circuit ground GND;

Described step-up coil and illuminating lamp return routing transformer T1 step-up coil L2, capacitor C 1 and fluorescent lamp H composition, one end of transformer T1 step-up coil L2 connects one end of fluorescent lamp H filament by capacitor C 1, the other end of another termination fluorescent lamp H filament of transformer T1 step-up coil L2;

The positive pole of described 12V DC power supply is connected with circuit anode VCC, and the negative pole of 12V DC power supply is connected with circuit ground GND.