CN2185965Y - Electronic energy-saving power supply for neon lamp - Google Patents

Abstract

The utility model discloses an electronic energy-saving power supply for neon lamps. The utility model is characterized in that the utility model is provided with a rectifying and filtering circuit which provides DC electricity for an oscillating circuit, the primary coil of a magnetic core voltage boosting transformer is used as the load of the oscillating circuit and the secondary coil of the magnetic core voltage boosting transformer outputs high voltage electricity for neon lamps. The utility model can evenly illuminate lamp tubes whose height is more than eight meters, and the utility model has the advantages of good brightness, good light color, energy saving, small size, light weight, low cost, flexible and convenient installation and easy achievement of program control.

Description

Electronic energy-saving power supply for neon lamp

The utility model relates to special electric lighting technology, is a kind of circuit arrangement that is used for discharge lamp igniting or control, specifically, is a kind of circuit arrangement by utilizing transducer by the high voltage direct current that direct current produced lamp to be powered.

The actual now neon lamp power source that uses normally adopts leakage inductance formula appendiron core transformer, and its shortcoming is power consumption many (being generally about 450W), and noise is big during work, need consume a large amount of silicon steel sheets and copper material again during manufacturing, and deal is heavy, volume is big.At present, though also the someone has proposed some electronic type neon lamp power source schemes, but because the problem on self circuit is difficult to actual applying, subject matter is: it can be with neon light tube length and the brightness power supply far away from traditional employing leakage inductance formula appendiron core transformer, and after neon lamp power source output line length increases, lighting tube brightness obviously descends, and fluorescent tube internal electric field skewness very easily causes fluorescent tube to damage.

The purpose of this utility model provides a kind of neon light tube length that drives, brightness no less than the existing power supply that adopts appendiron core transformer, and volume is little, in light weight, the electric energy-saving neon lamp power source of convenient and flexible installation.

Technical solution of the present utility model is: a kind of electric energy-saving neon lamp power source, employing is different from the design of prior art: a current rectifying and wave filtering circuit is arranged, current rectifying and wave filtering circuit provides direct current for an oscillating circuit, magnetic core step-up transformer primary coil is as the load of oscillating circuit, and by the high-tension electricity of its secondary coil output for the neon light use.

Oscillating circuit in the utility model is by the resonant circuit that comprises resonance coil, electric capacity, and comprises that the oscillating circuit that discharges and recharges of feedback coil, transistor circuit forms.Certainly, oscillating circuit also can adopt other suitable circuit structure forms.

Resonance coil in the utility model, feedback coil, output winding share a secondary magnetic core.Certainly, also can adopt other suitable similar structures.

Output winding in the utility model is made of two sub-coils that are in series.Certainly, also can adopt other suitable versions.

Step-up transformer in the utility model adopts U12 type ferrite magnetic core.Certainly, also can adopt other suitable magnetic cores.

Two sub-coils of the output winding in the utility model are enclosed within respectively on the symmetrical magnetic post of U12 type ferrite magnetic core.Certainly, when adopting the magnetic core of other models, also can adopt corresponding suitable coiling form.

The utility model has the advantages that: can evenly light neon light tube more than eight meters, brightness is identical with existing power supply photochromic and the employing appendiron core transformer, and have energy-conservation, practical, reliability is high, volume is little, in light weight, advantages such as cost is low, power output is big, load characteristic is good, convenient and flexible installation, and is suitable for the realization program control.After output line length increased, it is not fragile that lighting tube brightness does not have obvious decline, fluorescent tube yet, is suitable for popularization.The neon light tube that is driven is photochromic soft, and is bright in luster, the life-span is long, light efficiency is high.

The utility model is described in further detail below in conjunction with drawings and Examples:

Accompanying drawing is the electrical schematic diagram of a kind of electric energy-saving neon lamp power source of the present utility model.

Accompanying drawing has been described an embodiment of the present utility model.At first be current rectifying and wave filtering circuit in the circuit, form that its alternating current with input is transformed into direct current, for following oscillating circuit provides power supply by rectifier diode D1, D2, D3, D4, fuse BX, capacitor C1 etc.In oscillating circuit, the high-frequency filter capacitor of capacitor C 2, the circuit of being made up of resistance R 5, capacitor C 5, diode D5, D6 is before oscillatory work, provide a narrow current impulse by diode D5 to triode BG2 base stage, make the oscillating circuit starting of oscillation, after the circuit starting of oscillation, because short duration current is closed in the existence of diode D6 automatically.Capacitor C 4 is used for the limiting AC spike; the protection triode; the primary coil L1 of capacitor C 5 and output boostering transformer B1 is in series; form series resonance during work; oscillating current feeds back to the base stage of triode BG1, BG2 by feedback coil L2, L3; change the resistance of resistance R 2, R3; can adjust the operating state of triode; coil L4, L5 among the output boostering transformer B1 is the high-voltage output line circle; coil L4 and L5 are in series, and are enclosed within respectively on the symmetrical magnetic post of U12 type ferrite magnetic core of output boostering transformer B1.

The course of work of foregoing circuit is: behind the power connection, current rectifying and wave filtering circuit becomes direct current with alternating current, supply with oscillating circuit, triode BG1 in the oscillating circuit, BG2 ends, capacitor C 3 is through resistance R 1 charging, when the voltage on the capacitor C 3 reaches certain value, diode D5 conducting, diode D5 exports a short duration current to triode BG2 base stage, triode BG2 conducting, the coil L1 charging of electric capacity in transformer B1, the induced current of charging current on feedback coil L3 makes triode BG2 saturation conduction, triode BG1 ends more reliably, through of short duration charging, the charging current of capacitor C 5 begins to reduce, induced current among the coil L3 on transformer B1 makes triode BG2 move back saturated and transfers to and ending, and triode BG1 transfers conducting to by ending, capacitor C 5 is by triode BG1, coil L1 discharge, the induced current of discharging current on transformer B1 makes the further saturation conduction of triode BG1, triode BG2 reliably ends, when discharging current reduces gradually,, the coupling of transformer B1 ends triode BG2 conducting because becoming triode BG1.So repeatedly, triode BG1, BG2 take turns conducting provides charging and discharging circuit for capacitor C 5, and capacitor C 5, coil L1 form resonance.After circuit entered operate as normal, the time of half was the current potential that is near systematically because the negative terminal of diode D6 is had an appointment, and makes that the voltage on the capacitor C 3 does not reach the value of diode D5 conducting, and diode D5 no longer provides narrow current impulse to triode BG2.The primary coil of output boostering transformer is the load of above-mentioned oscillating circuit, and the number of turn after secondary coil L4, the L5 series connection is far more than the number of turn of primary coil L1, and coil L4, L5 series connection back output voltage is several kilovolts of high pressure, uses for neon light tube.

Claims (6)

1, a kind of electric energy-saving neon lamp power source, it is characterized in that: a current rectifying and wave filtering circuit is arranged, current rectifying and wave filtering circuit provides direct current for an oscillating circuit, and a magnetic core step-up transformer primary coil is as the load of oscillating circuit and the high-tension electricity that is used for neon light by its secondary coil output.

2, electric energy-saving neon lamp power source according to claim 1 is characterized in that: oscillating circuit is by the resonant circuit that comprises resonance coil, electric capacity, and comprises that the vibration path that discharges and recharges of feedback coil, transistor circuit forms.

3, electric energy-saving neon lamp power source according to claim 2 is characterized in that: resonance coil, feedback coil, output winding share a secondary magnetic core.

4, according to claim 1 or 2,3 described electric energy-saving neon lamp power sources, it is characterized in that: output winding is made of two sub-coils that are in series.

5, according to claim 1 or 2,3 described electric energy-saving neon lamp power sources, it is characterized in that: step-up transformer adopts U12 type ferrite magnetic core.

6, electric energy-saving neon lamp power source according to claim 4 is characterized in that: two sub-coils of output winding are enclosed within respectively on the symmetrical magnetic post of U12 type ferrite magnetic core.