CN2311915Y

CN2311915Y - Neon lamp transformer

Info

Publication number: CN2311915Y
Application number: CN 96208434
Authority: CN
Inventors: 刘昆源
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-08
Filing date: 1996-04-08
Publication date: 1999-03-24
Anticipated expiration: 2006-04-08

Abstract

The utility model provides a neon lamp transformer. The utility model is the improvement of the commercial electronic transformer, namely, a flip-flop protection circuit (7) and a 25-30 second delaying start circuit (8) are additionally arranged in the circuit of the existing electronic transformer; under the condition of the load open-circuit, the utility model can effectively restrain the phenomena of abnormal high-voltage frequent impact and high-voltage electrical sparking caused by the repeated energization of a scanner to the transformer to achieve the effects of safety and prolonged service life of the transformer.

Description

Novel gas tube sign transformer

The utility model will provide a kind of novel electronic type gas tube sign transformer, in particular for a kind of energy-economic transformer of dynamic type neon light board design.

After entering the nineties, traditional inductance type gas tube sign transformer consumes a large amount of non-ferrous metals because power consumption reaches greatly, is just progressively replaced by high-frequency electrical minor gas tube sign transformer.Current commercially available electronic transformer is to be provided with open-circuit protecting device in transformer; when load is broken down; can in 0.5 second, automatically shut down vibration; no high pressure output; have only and got rid of fault; transformer just can restart; if this transformer uses on dynamic type neon light board; because the neon light scanning machine is constantly to cut off the power supply and energising to neon light; transformer is also constantly starting and is protecting; high voltage also constantly impacting the high-pressure section of transformer, goes round and begins again, and if things go on like this will damage gas tube sign transformer.

In view of the problem of above-mentioned existence, propose meter a kind of after realizing defencive function moment during power remove, the transformer that the 25-30 that can delay time starts second.

The utility model all has the better protect effect to being used on normal bright neon light and the dynamic type neon light.Can effectively prevent the abnormal pressure repeated stock, the protection transformer high-voltage is partly exempted from breakdown and is damaged, and reaches safety and prolongs the transformer effect in useful life.

The utility model is achieved in that to make with multiple electronic devices and components to have the civil power filter circuit; current rectifying and wave filtering circuit; the 22-28KHZ high-frequency generator; drive circuit; the transformer of boost rectifying circuit is lighted neon lamp tube; the utility model is on the basis of above-mentioned existing gas tube sign transformer; set up one group of trigger protective circuit from the secondary coil of the step-up transformer of the boost rectifying circuit of this transformer; and the 25-30 delayed startup second circuit that connects with the trigger protective circuit, the electric signal after time-delay enters the 22-28KHZ high-frequency generator of being made up of the NE556 integrated circuit and vibrates to turn-off.

Enter the voltage signal of trigger protective circuit, via diode D17 and connect capacitor C 18, resistance R 18, capacitor C 17, resistance R 19, R20 and enter the trigger that integrated circuit NE556 forms, resistance R 16, R17, capacitor C 15 are formed the start setting circuits.

With the connection of trigger protective circuit is 25-30 delayed startup second circuit; system is exported by the NE556 integrated circuit; connect resistance R 10 and enter transistor Q3 base stage; resistance R 9 enters transistor Q3 emitter; and connection resistance R 11 enters transistor Q4 base stage; resistance R 15 enters transistor Q5 collector electrode; transistor Q3 output enters capacitor C 14 resistance R 12 through crystal diode D16 and connects transistor Q4 collector electrode; resistance R 13 allomeric triode Q5 base stages connect, and resistance R 13, the R12 other end constitute with the connection of time delay resistance R14 one end.

Fig. 1---novel gas tube sign transformer block diagram

Fig. 2---novel gas tube sign transformer schematic diagram

Fig. 3---the trigger protective circuit in the novel gas tube sign transformer schematic diagram and the former figure of 25-30 delayed startup second circuit amplify.

Shown in accompanying drawing, the utility model is illustrated further with following embodiment.

The civil power filter circuit (1) (9) that the utility model is set, current rectifying and wave filtering circuit (2) (10), 22-28KHZ high-frequency generator (3) (11), drive circuit (4) (12), boost rectifying circuit (5) (13), load fluorescent tube (6) (14), all similar or approximate with commercially available electronic type gas tube sign transformer, only,, do not intend giving unnecessary details so do not belong to category of the present utility model in the arrangement of circuit, the difference of selecting for use of components and parts.

Below set forth composition of the present utility model and operation principle.

The rectangle housing made from hard a, waterproof, flame resistant material, with above-mentioned by civil power filter circuit (1) (9) to boost rectifying circuit (5) (13) wait each circuit all with wiring board will need with the electronic devices and components overall alignment and be welded in.Again that the utility model is designed trigger protective circuit (7) (13) is welded in the housing with 25-30 delayed startup second circuit (8) (14); shell spare two ends are established input lead and output lead respectively; being checked errorless after, with epoxy resin with set of data device package in shell spare.

As Fig. 1, Fig. 2, shown in Figure 3, the step-up transformer B2 secondary coil in boost rectifying circuit (5) (13) is drawn and input trigger protective circuit (7) (15).Earlier via crystal diode D17 (17), again via capacitor C 18 (18) and resistance R 18 (19), R19 (20), R20 (21) and capacitor C 17 (22) same models are that 2 pin of the integrated circuit (23) of NE556 are connected, connecing capacitor C 16 (24) by integrated circuit NE556 (23) 3 pin extremely holds, meet R16 (25) to the power supply vdd terminal by integrated circuit NE556 (23) 6 pin, connect capacitor C 15 (26), resistance R 17 (27) is extremely held, connect with 25-30 delayed startup second circuit (8) (16) by the output of integrated circuit NE556 (23) 5 pin, its resistance R 10 (33) enters transistor Q3 (35) base stage, and its emitter meets power vd D by resistance R 9 (34), the collector electrode crystal meets diode D16 (36), capacitor C 14 (37), resistance R 14 (38) earth terminals, enter transistor Q4 (30) by the output of integrated circuit NE556 (23) 5 pin through resistance R 11 (29), its grounded emitter end, collector electrode connecting resistance R12 (39), be connected to its grounded emitter end of transistor Q5 (31) base stage with resistance R 13 (32), collector electrode connecting resistance R15 (28) is to power vd D, and collector electrode enters model NE556 integrated circuit (23) 4 pin in addition.

Power supply is through filtering, rectification, high frequency conversion, drive, light after boosting neon light tube luminous after, (load cut-off when abnormal failure occurs, load is overweight, supply voltage is too high) the step-up transformer B2 of boost rectifying circuit (5) (13) obtains an abnormal voltage signal, this signal is through crystal diode D17 (17) rectification, capacitor C 18 (18) filtering, through resistance R 18 (19), R19 (20), R20 (21) dividing potential drop, after capacitor C 17 (22) time-delays, enter NE556 integrated circuit (23) 2 pin, NE556 integrated circuit 10 pin of its 5 pin output electronegative potential control 22-28KHZ high-frequency generator (3) (11), make its failure of oscillations, reach the purpose of closing high pressure.The electronegative potential of output is through resistance R 10 (33) control and conducting transistor Q3 (35) simultaneously, its power vd D is via resistance R 9 (34), transistor triode Q3 (36), crystal diode D16 (36), to capacitor C 14 (37) charging, electric capacity anode moment is charged to high potential.Cut off the electricity supply, capacitor C 14 (37) is through resistance R 14 (38), and R13 (32) and transistor Q5 (31) discharge.In discharge is 20-30 delay time second, capacitor C 14 (37) anodes are through resistance R 13 (32), arrive transistor Q5 (31) base potential greater than 0.7 volt, so transistor Q5 (31) is in conducting state, integrated circuit NE556 (23) 4 pin are in electronegative potential, its 5 pin also will be exported electronegative potential, control 22-28KHZ high-frequency generator (3) (11) can not starting of oscillation, in addition in order to guarantee each normal startup, capacitor C 14 (37) positive terminal potentials should be zero and guarantee and start reliably next time, and the spy is provided with by resistance R 11 (29), R12 (39), the discharge switch that transistor Q4 (30) forms, normally start each time, transistor triode Q4 (30) will be switched on, and allow the remaining current potential of capacitor C 14 (37) anodes through resistance R 12 (39), transistor Q4 (30) releases over the ground, and is reliable with what guarantee to start next time.

Claims

1, a kind of novel gas tube sign transformer; make by multiple electronic devices and components and to have the civil power filter circuit; current rectifying and wave filtering circuit; the 22-28KHZ high-frequency generator; drive circuit; the transformer of boost rectifying circuit is lighted neon light tube, it is characterized in that connecting the trigger protective circuit between step-up transformer secondary coil at boost rectifying circuit is with the NE556 integrated circuit of 22-28KHZ high-frequency generator constitutes with the 25-30 delayed startup second circuit that is connected with the trigger protective circuit.

2, novel gas tube sign transformer as claimed in claim 1; it is characterized in that the trigger protective circuit enters integrated circuit NE556 by diode D17 connection resistance R 18, capacitor C 17, C18, resistance R 19, R20; and by resistance R 16, R17, the start setting circuit that capacitor C 15 is formed constitutes.

3; as claim 1; 2 described novel gas tube sign transformers; it is characterized in that 25-30 delayed startup second circuit with the connection of trigger protective circuit; export by the NE556 integrated circuit; connect resistance R 10 and enter transistor Q3 base stage; resistance R 9 enters transistor Q3 emitter; and connection resistance R 11 enters transistor Q4 base stage; resistance R 12 enters the Q4 collector electrode; resistance R 15 enters transistor Q5 collector electrode; transistor Q3 output enters capacitor C 14 through crystal diode D6; resistance R 12 connects the blue utmost point pipe of crystal Q4 collector electrode; resistance R 13 allomeric triode Q5 base stages connect, resistance R 13 and the R12 other end with time delay resistance R14 one end be connected constitute.