CN2222422Y

CN2222422Y - Energy-saving neon lamp power source

Info

Publication number: CN2222422Y
Application number: CN 94244421
Authority: CN
Inventors: 钱振平
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-09
Filing date: 1994-11-09
Publication date: 1996-03-13
Anticipated expiration: 2004-11-09

Abstract

The utility model relates to an energy-saving neon lamp power source, which is composed of a power source circuit, a starting circuit, an oscillating circuit, a boosted circuit and a protective circuit. Compared with the traditional neon lamp power source, the utility model has marked energy-saving effect; the output of the utility model is high-frequency high voltage, thus the lamp tube of a neon lamp work in a state of small-power high-frequency high voltage excitation gas discharge, and thus the service life of the neon lamp tube can be extended; the protective circuit can ensure the protection of the utility model when a load of the output of the utility model is open or shorted. Besides, the utility model has the characteristics of strong load ability, starting under a low voltage, stable working performance, etc.

Description

A kind of energy-saving neon lamp power supply

The utility model belongs to a kind of semiconductor device of using and utilizes the circuit arrangement of transducer by DC control, a kind of specifically energy-saving neon lamp power supply.

Documents, the authorization notification number discloses a kind of neon lamp power source for " CN2152370 ", and it is included in the self-excited oscillator of working under the DC power supply, high-frequency oscillation signal is supplied with neon light after boosting transformer.This kind design complex structure, power consumption is big, heavy.

The purpose of this utility model just provides that a kind of energy consumption is little, in light weight, good, the simple in structure neon lamp power source with defencive function of low-pressure performance.

The purpose of this utility model is achieved in that a kind of energy-saving neon lamp power supply is made up of power circuit, start-up circuit, oscillating circuit, booster circuit and protective circuit; The output of start-up circuit connects the input of oscillating circuit, and the output of oscillating circuit connects the input of booster circuit, and the output one tunnel of booster circuit connects load, and another road connects protective circuit, and another road input of protective circuit connects load, and the output of protective circuit connects oscillating circuit.

Protective circuit is by resistance R ₄-R ₆, potentiometer W ₁, W ₂, relay J ₁, J ₂, diode D ₉, capacitor C ₅One group of secondary winding N with step-up transformer T ₃Form; R ₄With J ₁Serial connection, R ₅With J ₂Be attempted by the output of power circuit after the serial connection, R ₅With J ₂Contact be coupled to an end of load, the secondary winding N of step-up transformer T ₃Through potentiometer W ₁, diode D ₉Be coupled to R ₄With J ₁Contact.

Start-up circuit is by resistance R ₁, R ₂, capacitor C ₃With diode D ₅Form; R ₁With C ₃Be attempted by the output of power circuit after the serial connection, R ₂With D ₅Serial connection back one termination R ₁With C ₃Contact, another termination triode BG ₂Base stage.

Oscillating circuit is by the primary and secondary winding L of feedback transformer ₁-L ₃, diode D ₆-D ₈, capacitor C ₄With triode BG ₁, BG ₂Form; Secondary winding L ₁Be connected to BG ₁Base stage and emitter between, BG ₁Collector electrode connect the anode of power supply, secondary winding L ₂Be connected to BG ₂Base stage and collector electrode between, BG ₂Emitter connect the negative terminal of power supply, BG ₁Emitting stage and BG ₂Collector electrode link elementary winding L ₃One be terminated at BG ₁Emitter and BG ₂The collector contact place, the elementary winding N of another termination step-up transformer ₁An end.

Booster circuit is by stepup transformer T and diode D ₁₀-D ₁₃Form; The secondary winding N of stepup transformer ₂Connect by D ₁₀-D ₁₃The bridge rectifier that constitutes, the output of bridge rectifier connects load.

Power circuit is by diode D ₁-D ₄And capacitor C ₁, C ₂Form.

The utility model has the advantages that circuit structure is simple, energy consumption is little, has open circuit, short circuit, overload protection, and starting resistor can be a kind of more satisfactory energy-saving neon lamp power supply in the 170V operate as normal.

Be that embodiment further specifies the utility model below with the accompanying drawing:

Fig. 1 is a block diagram of the present utility model.

Fig. 2 is an electrical schematic diagram of the present utility model.

As shown in Figure 2, its operation principle is as follows: civil power (220V) is through D ₁-D ₄Bridge rectifier is by C ₁, C ₂After the filtering,, start-up circuit, oscillating circuit, booster circuit and protective circuit press for providing galvanic current.After energized, through resistance R ₁To capacitor C ₃Charging is simultaneously through resistance R ₁, diode D ₆To capacitor C ₄Charging.Work as C ₃On voltage be charged to and be enough to make diode D ₅(D ₅Also can adopt bidirectional diode) during conducting, to triode BG ₂Base stage is exported a pulse, makes BG ₂Conducting is connected on BG ₂The primary coil N of the step-up transformer T of collector electrode ₁, feedback transformer elementary winding L ₃On the electric current mistake is arranged because BG ₂Conducting, capacitor C ₄Discharge, L ₃On the electric current mistake is arranged, make feedback transformer secondary winding L ₁, L ₂Produce induced electromotive force, and make triode BG ₁Saturation conduction, triode BG ₂End the feasible N that flows through ₁And L ₃On the sense of current opposite with the primary current direction, capacitor C ₄Charging, L ₁And L ₂On induce reverse electromotive force, make the BG of saturation conduction ₁End BG ₂Become saturation conduction, and so forth, conversion frequency depends primarily on capacitor C ₃The size of capacitive reactance.(frequency of oscillation of present embodiment is 32KHz) is at the secondary winding N of step-up transformer ₂On obtain a high frequency, high-voltage signal through diode D ₁₀-D ₁₃Output inserts load after the rectification.

When output loading was opened circuit or transship, the secondary winding N3 voltage that makes it step-up transformer raise, through potentiometer W ₁, diode D ₉Give capacitor C ₅C is worked as in charging ₅On charging voltage reach and make relay J ₁Adhesive, J _1-2Connect, make BG ₂Base stage and emitter short circuit, the oscillator failure of oscillations, step-up transformer no-output.When being short-circuited in the load, W flows through ₂, R ₆And J ₂The electric current of branch road increases, W ₂, R ₆On voltage raise, make relay J ₂Adhesive, J _2-2Connect the oscillator failure of oscillations, step-up transformer no-output.

Claims

1, a kind of energy-saving neon lamp power supply is characterized in that it is made up of power circuit, start-up circuit, oscillating circuit, booster circuit and protective circuit; The output of start-up circuit connects the input of oscillating circuit, and the output of oscillating circuit connects the input of booster circuit, and the output one tunnel of booster circuit connects load, and another road connects protective circuit, and another road input of protective circuit connects load, and the output of protective circuit connects oscillating circuit.

2, neon lamp power source according to claim 1 is characterized in that described protective circuit is by resistance R ₄-R ₆, potentiometer W ₁, W ₂, relay J ₁, J ₂, diode D ₉, capacitor C ₅One group of secondary winding N with step-up transformer T ₃Form; R ₄With J ₁Serial connection, R ₅With J ₂Be attempted by the output of power circuit after the serial connection, R5 and J ₂Contact be coupled to an end of load, the secondary winding N of step-up transformer T ₃Through potentiometer W ₁, diode D ₉Be coupled to R ₄With J ₁Contact.

3, neon lamp power source according to claim 2 is characterized in that described start-up circuit is by resistance R ₁, R ₂, capacitor C ₃With diode D ₅Form; R ₁With C ₃Be attempted by the output of power circuit after the serial connection, R ₂With D ₅Serial connection back one termination R ₁With C ₃Contact, another termination triode BG ₂Base stage.

4, neon lamp power source according to claim 3 is characterized in that the primary and secondary winding L of described oscillating circuit by feedback transformer ₁-L ₃, diode D ₆-D ₈, capacitor C ₄With triode BG ₁, BG ₂Form; Secondary winding L ₁Be connected to BG ₁Base stage and emitter between, BG ₁Collector electrode connect the anode of power supply, secondary winding L ₂Be connected to BG ₂Base stage and collector electrode between, BG ₂Emitter connect the negative terminal of power supply, BG ₁Emitting stage and BG ₂Collector electrode link elementary winding L ₃One be terminated at BG ₁Emitter and BG ₂The collector contact place, the elementary winding N of another termination step-up transformer ₁An end.

5, neon lamp power source according to claim 4 is characterized in that described booster circuit is by transformation T and the diode D of boosting ₁₀-D ₁₃Form; The secondary winding N of stepup transformer ₂Connect by D ₁₀-D ₁₃The bridge rectifier that constitutes, the output of bridge rectifier connects load.

6, neon lamp power source according to claim 5 is characterized in that described power circuit is by diode D ₁-D ₄And capacitor C ₁, C ₂Form.