CN2172940Y

CN2172940Y - Energy-saving electronic transformer for neon lamps

Info

Publication number: CN2172940Y
Application number: CN 93237899
Authority: CN
Inventors: 项文和
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-11-09
Filing date: 1993-11-09
Publication date: 1994-07-27
Anticipated expiration: 2003-11-09

Abstract

The utility model relates to an energy-saving electronic transformer for neon lamps, which comprises an upper cover, a base and a machine seat, and the base is provided with a printed circuit board, heat radiating fins, triodes, a high-voltage output transformer and an overvoltage protection circuit. Mains supply is provided for an oscillation circuit after rectification and filtering, the secondary coil of the high-voltage output transformer generates a 15000V high voltage which lights a neon lamp after high-voltage rectification. When the output end of the utility model is open for some reason, the relay of the overvoltage protection circuit is attracted the normally closed contact of the relay is switched off to cut off the power supply to prevent elements from being damaged caused by no-load boosting so as to achieve the purpose of protection. The utility model can replace an inductance type transformer, and can be suitable for various occasions where neon lamps are used for decoration.

Description

Energy-saving electronic transformer for neon lamps

The utility model relates to a kind of neon-light electronic energy-economic transformer, is the supply unit of lighting neon light with excess voltage protection.

Insert controllable device in the known neon light tube circuit that curves various patterns and literal and can obtain multicolour pattern advertisement or the signal that circulation change flickers automatically, and originally mostly be inductance type in order to the transformer of lighting neon light, this inductive-type transformer need be with a large amount of silicon steel sheets and enamelled wire, power consumption is big, volume is big, weight is big, the cost height, and power factor is but very low.

Because electric energy-saving gas tube sign transformer market prospects are wide, many people are developing, but all unreasonable because of its circuit and structural design: two high-voltage output lines are at a distance of the nearer fuse that fuse, or output is when opening a way for some reason, and voltage raises and causes the interior former components from being damaged of machine.For improving above-mentioned existing problems, people adopt discharge fusing fuse with deenergization, and this has increased again opens the trouble that loam cake is changed fuse, in addition, selects for use former device improper, and useful life is short, thereby all fail to form industrialization product.

The purpose of this utility model is to avoid the above-mentioned weak point of prior art, and a kind of low in energy consumption, in light weight, volume is little, cost is low, power factor (PF) is high neon-light electronic energy-economic transformer is provided.

The purpose of this utility model reaches by following technical measures.

The utility model includes printed circuit board, fin, transistor and the high pressure output transformer on loam cake, base, under-chassis, the base, and the binding post and the fuse holder of base one end, the insulator of its other end and earth terminal, AC power D1 end through fuse FU and D2 end respectively with printed circuit board on two ac input ends of bridge rectifier D1-4 join, the negative pole of D1-4 is a bit the joining of positive pole of the normally closed contact J1-1 of the positive pole of circuit and relay J, and with filtering capacitor C ₁And C ₂Positive pole after the series connection joins, capacitor C ₁And C ₂Negative pole and circuit negative pole join resistance R ₁, R ₂Be connected in parallel on capacitor C respectively ₁And C ₂The capacitor for voltage protection effect is played at two ends.Like this behind rectifying and wave-filtering, at capacitor C ₁And C ₂Two ends obtain about 280V direct voltage, in order to supply with oscillating circuit work.

The positive pole of circuit meets triode T ₁The collection utmost point, its emitter and triode T ₂Collector electrode series connection, T ₂Emitter by emitter resistance R ₄Join capacitor C with the circuit negative pole ₄Be connected in parallel on resistance R ₄Two ends play the bypass effect.

Triode T ₁, T ₂Base stage connecting resistance R respectively ₅, R ₆, and with oscillator coil L ₁1., 3. the end join oscillator coil L ₁2., 4. end is connected to T respectively ₁, T ₂Mid point and T ₂Emitter.

The anodal connecting resistance R of circuit ₃And series capacitor C ₃After meet triode T ₂Emitter, resistance R ₃With capacitor C ₃Mid point meet bidirectional trigger diode D ₅An end, diode D ₅Another termination triode T ₂Base stage, diode D ₆And D ₇Oppositely be attempted by triode T respectively ₁, T ₂Collector electrode c, e end, play protection triode T ₁And T ₂Effect.

Higher-order of oscillation coil L ₁Secondary and high pressure output transformer L ₂Elementary continuous, higher-order of oscillation coil L ₁5. termination triode T ₁And T ₂Mid point, and at capacitor C ₁And C ₂Mid point and triode T ₁And T ₂Mid point connecting resistance R ₇

High pressure output transformer L ₂Secondary 3., the 4. ac input end of the high-voltage rectifier formed by high pressure silicon particle D11-14 of termination, join through the both positive and negative polarity and the neon light ND of high-voltage rectifier, and join, so that by adjacent weld tabs A with weld tabs A, A ¹, A ¹Strong discharge connects excess voltage protection again, to prevent damaging the former device of circuit at high-voltage output end open circuit space-time live voltage rise height.

The high pressure output board that is contained on the base support is provided with high-voltage rectifier, and this circuit is connected on high pressure output transformer L ₂Secondary 3., 4. and between the neon light ND.Excess voltage protection is located on the printed circuit board.The D of AC power ₂Terminating resistor R ₈, resistance R ₈With diode D ₂Positive pole be in series diode D ₉Negative pole and coil one end of relay J join, the other end order of this coil is to the anode A of controllable silicon SCR, the negative electrode K of one-way SCR and the negative pole of circuit join resistance R ₉With electrolytic capacitor C ₅Be connected in parallel on diode D after the parallel connection again ₉Negative pole and the two ends of circuit negative pole, strobe.

The trigger electrode of unidirectional controllable silicon S CR (G) meets diode D ₁₀Negative pole, diode D ₁₀Positive pole meet feedback coil L ₃Secondary 3. the end, feedback coil L ₃The negative electrode (K) of 4. termination unidirectional controllable silicon S CR, it is elementary 1., 2. termination weld tabs A ¹, A ¹End.Capacitor C ₆And resistance R ₁₀Be connected in parallel between the G utmost point and the K utmost point of unidirectional controllable silicon S CR capacitor C ₆In order to filtering radio-frequency component, resistance R ₁₀In order to shunting.

Diode D ₈Positive pole meet triode T ₂Emitter, its negative pole order is to the G of the controllable silicon SCR utmost point, plays overload protective function.

The utility model compared with prior art has following advantage:

Following comparison sheet obviously shown the utlity model has low in energy consumption, in light weight, volume is little, cost is low, the advantage that power factor is high.In addition, the distinctive excess voltage protection of the utility model, promptly when output was opened a way, power supply was understood automatic disconnection, and former device exempts from damage in the machine.Exempt from damage.

The utility model and inductive-type transformer comparison sheet:

Inductive-type transformer	The utility model
		Supply voltage: AC220V 50HZ input power: 450V power factor (PF): 0.2～0.5 liang of high pressure output line distance: 〉=100MM	180～250V, 50HZ≤80W 〉=0.9 can hang together and have overvoltage crowbar

The explanation of accompanying drawing drawing:

Fig. 1 is a structural representation of the present utility model.

Vertical view when Fig. 2 does not have loam cake for Fig. 1.

Fig. 3 is a circuit diagram of the present utility model.

Following the utility model will describe in detail embodiment (in conjunction with the accompanying drawings).

The utility model shown in Fig. 1,2 includes printed circuit board 3, fin 9, transistor 10 and high pressure output transformer 11 and the binding post 2 of base 4 one ends and the insulator 7 and the earth terminal 14 of the fuse holder 8 and the other end on loam cake 1, base 4, under-chassis 5, the base 4, AC power D1 end through fuse FU and D2 end thereof respectively with printed circuit board ［ 3 ］ on two inputs of bridge rectifier D1-4 join, the negative pole of D1-4 is a bit the joining of normally closed contact J1-1 of the positive pole of circuit and relay J, and with filtering capacitor C ₁, C ₂Positive pole after the series connection joins, capacitor C ₁, C ₂Negative pole and circuit negative pole join resistance R ₁, R ₂Be connected in parallel on capacitor C respectively ₁And C ₂Two ends.The AC220V50HZ alternating voltage is through diode D1-4 rectification, electrolytic capacitor C ₁, C ₂Filtering is at capacitor C ₁, C ₂The direct voltage of the 280V that produces of two ends make oscillating circuit work.

Resistance R ₃, capacitor C ₃With bidirectional trigger diode D ₅Form start-up circuit.

The positive pole of circuit meets triode T ₁Collector electrode c, its emitter e and triode T ₂Collector electrode c series connection, triode T ₂Emitter e by emitter resistance R ₄Join capacitor C with negative the connecing of circuit ₄Be connected in parallel on resistance R ₄Two ends, triode T ₁, T ₂Base stage b connecting resistance R respectively ₅, R ₆, and with oscillator coil L ₁End 1., 3. join oscillator coil L ₁2., 4. end is connected to T respectively ₁, T ₂Mid point and T ₂Emitter (e); The anodal connecting resistance R of circuit ₃And series capacitor C ₃After meet triode T ₂Emitter (e), resistance R ₃With capacitor C ₃Mid point meet bidirectional trigger diode D ₅An end, diode D ₅A termination triode T ₂Base stage (b), diode D ₆, D ₇Oppositely be attempted by T respectively ₁, T ₂Collector electrode c, e the end, high pressure output transformer L ₂Secondary 3., the 4. ac input end of the high-voltage rectifier formed by high pressure silicon particle D11-14 of termination, join through the both positive and negative polarity and the neon light ND of high-voltage rectifier, and join with weld tabs A, A.

Direct voltage behind rectifying and wave-filtering is through resistance R ₃Give capacitor C ₃Charging is as capacitor C ₃On voltage be enough to make diode D ₅During conducting, promptly to triode T ₂Base stage (b) output one pulse voltage makes triode T ₂Conducting.

Triode T ₂After the conducting, because higher-order of oscillation coil L ₁Feedback effect, make triode T ₁Saturation conduction, triode T at this moment ₂End triode T ₁And T ₂Repeatedly saturated and ending makes the circuit operate as normal, and this moment is at L ₂Elementary, promptly high pressure output transformer ［ 11 ］ high frequency voltage that produces about 20KHZ is felt L ₂The high frequency voltage of the about 15000V of secondary generation, the bridge rectifier that this voltage is formed via high pressure silicon particle D11-14 again can be lighted neon light tube.

The support ［ 12 ］ of base ［ 4 ］ is provided with high pressure output board ［ 6 ］, and this plate ［ 6 ］ is provided with high-voltage rectifier, and this circuit is connected on high pressure output transformer L ₂Secondary 3., 4. and between the neon light ND.Excess voltage protection is located at printed circuit board ［ 3 ］, the D of AC power ₂Terminating resistor R ₈, resistance R ₈With diode D ₉Positive pole be in series diode D ₉Negative pole and coil one end of JRX-4098 miniature relay J join, the anode ［ A ］ of another termination MCR100-6 type unidirectional controllable silicon S CR of this coil, the negative pole of the negative electrode of one-way SCR ［ K ］ and circuit joins resistance R ₉With electrolytic capacitor C ₅Be connected in parallel on diode D after the parallel connection again ₉Negative pole and the two ends of circuit negative pole.The trigger electrode of unidirectional controllable silicon S CR ［ G ］ meets diode D ₁₀Negative pole, diode D ₁₀Positive pole meet feedback coil L ₃Secondary 3. end, it is the negative electrode of termination unidirectional controllable silicon S CR ［ K ］ 4., it is elementary 1., 2. termination weld tabs A ¹, A ¹, capacitor C ₆And resistance R ₁₀Be connected in parallel between the G utmost point and the K utmost point of unidirectional controllable silicon S CR diode D ₈Positive level meet triode T ₂Expelling plate ［ e ］, its negative pole order is to the G of the controllable silicon SCR utmost point.

When output was opened a way, floating voltage raise, and high-voltage output end A, A are promptly to A ¹, A ¹The strong discharge of end, this voltage is by feedback coil L ₃Elementary be induced to secondary, through diode D ₁₀, capacitor C ₆The filtering radio-frequency component, and through resistor R ₁₀After the shunting, trigger the gate pole ［ G ］ of unidirectional controllable silicon S CR, thereby make anode ［ A ］ and negative electrode ［ K ］ conducting of unidirectional controllable silicon S CR; there is electric current to pass through on the relay J coil, the relay J adhesive, normally closed contact J1-1 disconnects; cut off the electricity supply, thereby reach the purpose of protection.

Claims

1, a kind of neon-light electronic energy-economic transformer, include printed circuit board [3], fin [9], triode [10] and the high pressure output transformer [11] on loam cake [1], base [4], under-chassis [5], the base [4], the binding post [2] of base [4] one ends and the insulator [7] and the earth terminal [14] of the fuse holder [8] and the other end, AC power D1 end joins with two ac input ends of bridge circuit D1-4 respectively through fuse FU and D2 end, the negative pole of D1-4 is a bit the joining of normally closed contact J1-1 of the positive pole of circuit and relay J, and with filtering capacitor C ₁, C ₂Positive pole after the series connection joins, capacitor C ₁, C ₂Negative pole and circuit negative pole join resistance R ₁, R ₂Be connected in parallel on capacitor C respectively ₁And C ₂Two ends; The positive pole of circuit meets triode T ₁Collector electrode [c], its emitter [e] and triode T ₂Collector electrode [c] series connection, triode T ₂Emitter [e] by emitter resistance R ₄Join capacitor C with the circuit negative pole ₄Be connected in parallel on resistance R ₄Two ends, triode T ₁, T ₂Base stage [b] connecting resistance R respectively ₅, R ₆, and with oscillator coil L ₁End 1., 3. join oscillator coil L ₁2., 4. end is connected to T respectively ₁, T ₂Mid point and T ₂Emitter [e]; Resistor R ₃, capacitor C ₃With bidirectional trigger diode D ₅Form start-up circuit, the anodal connecting resistance R of circuit ₃And series capacitor C ₃After meet triode T ₂Emitter [e], resistance R ₃With capacitor C ₃Mid point meet bidirectional trigger diode D ₅An end, diode D ₅Another termination triode T ₂Base stage [b], diode D ₆And D ₇Oppositely be attempted by T respectively ₁, T ₂Collector electrode c, e the end; High pressure output transformer L ₂Secondaryly 3., 4. end joins with neon light ND and be connected with weld tabs A, A, it is characterized in that:

A) support [12] of base [4] is provided with high pressure output board [6], and this plate of this plate [6] is provided with high-voltage rectifier, and this circuit is connected on high pressure output transformer L ₂Secondary 3., 4. and between the neon light ND;

B) excess voltage protection is located on the printed circuit board [3], the D2 terminating resistor R of AC power ₈, resistance R ₈With diode D ₉Positive pole be in series diode D ₉Negative pole and coil one end of relay J join, the other end order of this coil is to the sun level [A] of controllable silicon SCR, the negative electrode of one-way SCR [K] joins resistance R with the negative pole of circuit ₉With electrolytic capacitor C ₅Be connected in parallel on diode D after the parallel connection again ₉Negative pole and the two ends of circuit negative pole; The trigger electrode of unidirectional controllable silicon S CR [G] meets diode D ₁₀Negative pole, diode D ₁₀Positive pole meet feedback coil L ₃Secondary 3. the end, feedback coil L ₃The negative electrode [K] of 4. termination unidirectional controllable silicon S CR, feedback coil L ₃Elementary 1., 2. termination weld tabs A, A the end, capacitor C ₆And resistance R ₁₀Be connected in parallel between the G utmost point and K of unidirectional controllable silicon S CR diode D ₈Positive pole meet triode T ₂Expelling plate [e], its negative pole order is to the G of the controllable silicon SCR utmost point.