CN208445789U

CN208445789U - Emergency LED lighting source circuit

Info

Publication number: CN208445789U
Application number: CN201820661651.9U
Authority: CN
Inventors: 王东林
Original assignee: Zhongshan Hongchi Lighting Technology Co Ltd
Current assignee: Zhongshan Hongchi Lighting Technology Co Ltd
Priority date: 2018-05-05
Filing date: 2018-05-05
Publication date: 2019-01-29
Anticipated expiration: 2028-05-05

Abstract

The utility model discloses a kind of emergency LED lighting source circuits, including rectification filtering module, PWM control module, transformer and sampling feedback module, the current data of sampling feedback module acquisition transformer, it is sent to PWM control module, PWM control module output end is connect with transformer；It further include input terminal protective module and charge-discharge modules; input terminal protective module includes fuse F1, thermistor NTC1 and varistor TVR1; it is connect with the input terminal of rectification filtering module; fuse F1 is connect with firewire L; thermistor NTC1 is connect with zero curve N, and the both ends varistor TVR1 are connect with firewire L, zero curve N respectively；The connection of the output end of charge-discharge modules and transformer.Charge-discharge modules are arranged in the utility model, increase function of emergency illumination for the LED illumination lamp of household, can very easily cope with the abnormal conditions such as power failure.

Description

Emergency LED lighting source circuit

Technical field

The utility model relates to a kind of emergency LED lighting source circuits.

Background technique

Existing general LED illumination power circuit, does not have emergency function, if ac input end stops power supply, So the LED load of current output terminal can then stop working, it is also necessary to which user is equipped with emergency light, very inconvenient in this way.

Utility model content

The utility model proposes a kind of emergency LED lighting source circuits, and charge-discharge modules are arranged, and are the LED illumination of household Lamp increases function of emergency illumination, can very easily cope with the abnormal conditions such as power failure.

The technical solution of the utility model is achieved in that

A kind of emergency LED lighting source circuit, including rectification filtering module, PWM control module, transformer and sampling feedback Module, the sampling feedback module acquire the current data of the transformer, are sent to the PWM control module, The PWM control module output end is connect with the transformer；It further include input terminal protective module and charge-discharge modules, it is described defeated Entering to hold protective module includes fuse F1, thermistor NTC1 and varistor TVR1, the input with the rectification filtering module End connection, the fuse F1 are connect with firewire L, and the thermistor NTC1 is connect with zero curve N, the varistor TVR1 two End is connect with firewire L, zero curve N respectively；The charge-discharge modules are connect with the output end of the transformer.

It further, further include input terminal anti-interference capacitor CX1 and output end anti-interference capacitor CY1.

Further, the charge-discharge modules include voltage comparator circuit and battery, and the voltage comparator circuit includes LM358 dual operational amplifier, the voltage comparator circuit connect the input of the output end and the battery of the transformer The output end at end, the battery connects load.

Further, the charge-discharge modules further include emergency indicator light.

The utility model has the beneficial effects that: setting charge-discharge modules, increase emergency photograph for the LED illumination lamp of household Bright function can very easily cope with the abnormal conditions such as power failure.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the circuit diagram of the utility model emergency LED lighting source circuit one embodiment.

In figure, 1- input terminal protective module；2- rectification filtering module；3-PWM control module；4- sampling feedback module；5- Transformer；6- charge-discharge modules.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts Every other embodiment obtained, fall within the protection scope of the utility model.

As shown in Figure 1, the utility model proposes a kind of emergency LED lighting source circuit, including rectification filtering module 2, PWM control module 3, transformer 5 and sampling feedback module 4, sampling feedback module 4 acquire the electric current number of 5 primary coil of transformer According to being sent to PWM control module 3,3 output end of PWM control module is connect with transformer 5；It further include 1 He of input terminal protective module Charge-discharge modules 6, input terminal protective module 1 includes fuse F1, thermistor NTC1 and varistor TVR1, with rectifying and wave-filtering The input terminal of module 2 connects, and fuse F1 is connect with firewire L, and thermistor NTC1 is connect with zero curve N, varistor TVR1 two End is connect with firewire L, zero curve N respectively；Charge-discharge modules 6 are connect with the output end of transformer 5.

In order to reduce interference, the utility model further includes input terminal anti-interference capacitor CX1 and output end anti-interference capacitor CY1。

Charge-discharge modules 6 include voltage comparator circuit and battery, and voltage comparator circuit includes the bis- operation amplifiers of LM358 Device, voltage comparator circuit connect the output end of transformer 5 and the input terminal of battery, and the output end of battery connects load. To charge the battery, in 5 output end no current of transformer, electric power storage tank discharge discharges charge-discharge modules 6 for LED illumination lamp.

Charge-discharge modules 6 further include emergency indicator light.

Charge-discharge modules 6 are arranged in the utility model, increase function of emergency illumination for the LED illumination lamp of household, can be with ten Divide the easily abnormal conditions such as reply power failure.

Above-mentioned technical proposal discloses the improvement of the utility model, the technology contents not being disclosed in detail, can be by this field Technical staff is achieved by the prior art.

The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims

1. a kind of emergency LED lighting source circuit, including rectification filtering module, PWM control module, transformer and sampling feedback mould Block, the sampling feedback module acquire the current data of the transformer, are sent to the PWM control module, institute PWM control module output end is stated to connect with the transformer；It is characterized by also including input terminal protective modules and charge and discharge mould Block, the input terminal protective module includes fuse F1, thermistor NTC1 and varistor TVR1, with the rectifying and wave-filtering mould The input terminal of block connects, and the fuse F1 is connect with firewire L, and the thermistor NTC1 is connect with zero curve N, the pressure-sensitive electricity The resistance both ends TVR1 are connect with firewire L, zero curve N respectively；The charge-discharge modules are connect with the output end of the transformer.

2. emergency LED lighting source circuit according to claim 1, it is characterised in that: further include the anti-interference electricity of input terminal Hold CX1 and output end anti-interference capacitor CY1.

3. emergency LED lighting source circuit according to claim 1, it is characterised in that: the charge-discharge modules include electricity It presses comparison circuit and battery, the voltage comparator circuit includes LM358 dual operational amplifier, the voltage comparator circuit connection The output end of the input terminal of the output end of the transformer and the battery, the battery connects load.

4. emergency LED lighting source circuit according to claim 3, it is characterised in that: the charge-discharge modules further include Emergency indicator light.