CN201550342U

CN201550342U - High-frequency energy saving lamp circuit

Info

Publication number: CN201550342U
Application number: CN2009200663894U
Authority: CN
Inventors: 沈小波
Original assignee: HUNAN XINHUI ELECTRICAL APPLIANCE ENERGY-SAVING TECHNOLOGY CO LTD
Current assignee: HUNAN XINHUI ELECTRICAL APPLIANCE ENERGY-SAVING TECHNOLOGY CO LTD
Priority date: 2009-10-26
Filing date: 2009-10-26
Publication date: 2010-08-11
Anticipated expiration: 2019-10-26

Abstract

The utility model provides a high-frequency energy saving lamp circuit, which comprises a power circuit formed by four rectifier diodes, namely, D1, D2, D3 and D4, and an electrolytic capacitor C1, a starting circuit formed by a current limit resistor R6, an electrolytic capacitor C7 and a rectifier diode D9, a high frequency transformer formed by two triodes, namely, T1 and T2, two electrolytic capacitors, namely, C4 and C2, and primary coils, namely LA, LB and LC, a high-frequency self-oscillating circuit formed by an L, and a series resonance circuit formed by an electrolytic capacitor C2 and an L. As a high frequency electronic ballast is adopted to convert 50Hz power source into a high frequency with about 38 kHz, and the flickering of lamp can be reduced to an imperceptible level. And in addition to that, compared with the current lighting technology, the utility model has the advantages of electricity saving, long service life, etc., and is suitable for extensive popularization.

Description

The high-frequency energy-saving lamp circuit

Technical field

The utility model relates to lighting circuit, is specifically related to a kind of high-frequency energy-saving lamp circuit.

Background technology

Electricity-saving lamp is compact fluorescent lamp again, is called for short the CFL lamp since it have light efficiency height (be common bulb 5 times), plurality of advantages such as energy-saving effect is obvious, the life-span is long (be common bulb 8 times), volume is little, easy to use, be subjected to paying attention to widely.

Electricity-saving lamp mainly is to heat to tube filament by ballast, greatly when the 1160K temperature, filament just begins emitting electrons, the electron collision ar atmo produces inelastic collision, obtain energy after the ar atmo collision and clashed into mercury atom again, mercury atom transition after absorbing energy produces ionization, send the ultraviolet ray of 253.7nm, ultraviolet ray excited light-emitting phosphor, because the temperature of filament is about 1160K during fluorescent lamp operation, temperature 2200K-2700K than incandescent lamp work is much lower, so the also big raising of its life-span reached more than 5000 hours, because there is not the such heating effect of current of incandescent lamp in it, the energy conversion efficiency of fluorescent material is also very high, reaches more than every watt 50 lumen.One 7 watts trichromatic energy saving lamp brightness is equivalent to one 45 watts incandescent lamp, and the life-span is 8 times of the ordinary incandescent lamp bubble.

Common fluorescent lamp is because its magnetic ballast operating frequency is low frequency 50Hz, so light flash is people's sensible the arriving of eyes.In order to overcome this shortcoming, we adopt high-frequency electronic ballast the 50Hz power source conversion to be become the high frequency of about 38KHZ, high-frequency electronic ballast when work be because nonlinear load makes that current waveform is not the sinusoidal wave harmonic wave that produces, thus its general the electric light flickers be reduced to the people experience less than level.

Summary of the invention

The purpose of this utility model provides a kind of high-frequency energy-saving lamp circuit that adopts high-frequency electronic ballast in the deficiency that overcomes existing electricity-saving lamp, the eyes impression that the fluorescent lamp flicker is reduced to the people less than level.

The utility model is achieved through the following technical solutions:

The high-frequency energy-saving lamp circuit comprises power circuit, start-up circuit, high-frequency self-excitation oscillating circuit and series resonant circuit, and wherein power circuit is made up of D1, D2, four rectifier diodes of D3, D4 and electrochemical capacitor C1; Start-up circuit is made up of current-limiting resistance R6, electrochemical capacitor C7 and rectifier diode D9; The high-frequency self-excitation oscillating circuit is made up of high frequency transformer and the L that two triodes of T1, T2, two electrochemical capacitors of C4, C2, primary coil LA, LB, LC form; Series resonant circuit mainly comprises electrochemical capacitor C2 and L.On two triodes of described T1, T2 fin is installed.

The utility model operation logic is as follows:

Power supply forms the direct voltage about 300V after by D1～D4 rectification, capacitor C 1 filtering; Form start-up circuit by current-limiting resistance R6, capacitor C 7, diode D9, direct current after the rectification charges to C7 through R6, be charged to the breakover voltage of D9 when the C7 both end voltage after, diac D9 conducting, C7 to triode T2 base stage discharge, makes the conducting state that reaches capacity rapidly after the T2 conducting through D9.

Form the high-frequency self-excitation oscillating circuit by T1, T2, C4, C2, high frequency transformer and L, when the T2 conducting, voltage charged to C4, C2 when T1 ended; The charging current of flowing through among the high frequency transformer primary coil LA increases gradually, and when the LA electric current increased to a certain degree, the magnetic core of transformer reached capacity, and the last electric charge of C4 no longer increases.At this moment, the polarity of voltage generation paraphase of secondary coil K2, K3 changes, and makes among the LC induced electromotive force present that negative down just the induced electromotive force among the LB is presented negative just down, so just forces T2 to be become by conducting and ends, and T1 is by by becoming conducting; C4 begins discharge, and after discharging current increased to a certain degree, magnetic core of transformer took place saturated again, and the polarity of voltage of LB, LC is changed again, and the direction of the induced electromotive force on the LB is last just bearing down; The direction of the induced electromotive force on the LC is last negative just down, this forces T2 to become conducting by ending again, T1 is become by conducting and ends. T1, T2 conducting again and again and ending under high frequency transformer control like this, form the higher-order of oscillation, and make fluorescent tube obtain the high-frequency and high-voltage power supply.

Light the required voltage of fluorescent tube in order to satisfy, circuit is provided with the series resonant circuit of mainly being made up of elements such as capacitor C 2 and L; The effect of rectifier diode D6, D7 is respectively to prevent that peak-inverse voltage from puncturing triode T1, T2; R3, R4 are negative feedback resistor, are used for the overcurrent protection of T1, T2.

Advantage of the present utility model is:

1, the utility model is owing to adopt high-frequency electronic ballast the 50Hz power source conversion to be become the high frequency of about 38KHZ, in high-frequency electronic ballast when work, is because nonlinear load makes that current waveform is not that sine wave produces harmonic wave, therefore there is not stroboscopic effect harm, the vision localization sense is good, be not easy to produce visual fatigue, help enhancing productivity.

2, on-the-spot contrast test shows: adopt the 50W high-frequency Energy Management Contract energy-saving lamp of high-frequency energy-saving lamp circuit can substitute the 400W metal halide lamp fully, under the prerequisite of illumination raising 25%, power substitutes ratio and reaches 1: 8.1, and actual power saving rate is 87.7%.

Description of drawings

Fig. 1 is the utility model fundamental diagram

Embodiment

Below be preferred embodiment of the present utility model, the utility model can the described content of by specification elect any mode to implement.Specify below in conjunction with accompanying drawing:

See accompanying drawing 1, the high-frequency energy-saving lamp circuit comprises power circuit, start-up circuit, high-frequency self-excitation oscillating circuit and series resonant circuit, and wherein power circuit is made up of D1, D2, four rectifier diodes of D3, D4 and electrochemical capacitor C1; Start-up circuit is made up of current-limiting resistance R6, electrochemical capacitor C7 and rectifier diode D9; The high-frequency self-excitation oscillating circuit is made up of high frequency transformer and the L that two triodes of T1, T2, two electrochemical capacitors of C4, C2, primary coil LA, LB, LC form; Series resonant circuit mainly comprises electrochemical capacitor C2 and L.On two triodes of T1, T2 fin is installed also.

To adopt 6U-50W high-frequency Energy Management Contract energy-saving lamp of the present utility model and 400W metal halide lamp to carry out on-the-spot contrast test, the result shows:

1) no stroboscopic effect harm, the vision localization sense is good, is not easy to produce visual fatigue, helps enhancing productivity;

2) under the prerequisite of illuminance of ground value raising 25%: actual power substitutes ratio=1W: 8.1W, actual power saving rate=87.7%;

3) color rendering index R value is brought up to about 82 by 45, and color developing improves about 2 times; The lighting environment color is true to nature, correctly the true colors of identification color body;

4) workshop ground, operation table top and the effective visible sensation sense of space, workshop obviously become clear, clear, comfortable;

5) it is 15000 hours that 6U-50W high-frequency Energy Management Contract energy-saving lamp, starter are lighted the life-span, is about 2 times of Metal halogen lamps.

Claims

1. high-frequency energy-saving lamp circuit, comprise power circuit, start-up circuit, high-frequency self-excitation oscillating circuit and series resonant circuit, it is characterized in that: described power circuit is made up of D1, D2, four rectifier diodes of D3, D4 and electrochemical capacitor C1, described start-up circuit is made up of current-limiting resistance R6, electrochemical capacitor C7 and rectifier diode D9, described high-frequency self-excitation oscillating circuit comprises that high frequency transformer and L that two triodes of T1, T2, two electrochemical capacitors of C4, C2, primary coil LA, LB, LC form form, and described series resonant circuit comprises electrochemical capacitor C2 and L.

2. a kind of high-frequency energy-saving lamp circuit according to claim 1 is characterized in that: on two triodes of described T1, T2 fin is installed.