CN2181793Y - Multifunctional inverter power supply for neon lamp - Google Patents

Abstract

The utility model provides a multifunctional inverter power supply for neon lamps, which is composed of a casing, a circuit board, an excess voltage and over-current protective circuit A, an oscillating circuit B, an ultra-under voltage protective circuit C, etc., each circuit is arranged on the circuit board, and the circuit board is arranged in the casing. Compared with the existing single-function inverter power supply, the utility model has the functions of excess voltage and over-current protection, ultra-under voltage protection, etc., and the utility model can extend effectively the service life of the power supply; besides, the utility model has the advantages of simple structure, high safety, high stability, etc., so the utility model is a substitute for the existing similar product.

Description

Multifunctional inverter power supply for neon lamp

The utility model relates to a kind of electronics inverter, especially a kind of multi-functional neon light inverter.

The deficiency that all kinds of neon lights in the market exist with inverter is to bear frequently height variation of line voltage, because line voltage shakiness, the too high or too low electronics device component wear that all can make in the inverter, or because damaging, neon light tube also can damage inverter because of open circuit.

The purpose of this utility model provides a kind of neon light inverter with kinds of protect functions such as overvoltage, under-voltage, overcurrents.

The purpose of this utility model realizes in the following manner: at the supply main input of inverter except that serial connection fuse RD; piezo-resistance MY also in parallel; form the power supply over-voltage over-current protection circuit; in oscillating circuit, adopt auxiliary superpressure under-voltage protecting circuit; when neon light damages open circuit, can make the short-circuited coil short circuit in the oscillation transformer, its vibration is stopped and closing oscillation transformer; therefore do not have high pressure output, the protection inverter is not burnt out.

Figure of description (1) is circuit theory diagrams of the present utility model;

Figure of description (2) is a schematic block circuit diagram of the present utility model;

Figure of description (3) is a casing external view of the present utility model;

With reference to Figure of description inverter of the present utility model is described in detail below.

Multifunction neon light inverter of the present utility model is made up of casing (1), circuit board (2), over-voltage over-current protection circuit A, oscillating circuit B and ultra under-pressure holding circuit C; circuit ABC is installed on the circuit board (2), and circuit board (2) then is installed in the casing (1).

Over-voltage over-current protection circuit A is by fuse RD, piezo-resistance MY, rectifier Q, inductance L ₁Resistance R ₁R ₂And capacitor C ₁Form.RD is serially connected on the 220V power supply, and MY is connected in parallel on the power supply, and the direct current positive pole of 220V alternating current after rectification is serially connected with L ₁, R ₁With power positive cathode parallel connection, R ₂Serial connection C ₁Also be connected in parallel on the both positive and negative polarity of power supply.

Oscillating circuit B is by diode D ₁D ₂D ₃D ₁₀D ₁₁, capacitor C ₂C ₃C ₄, triode T ₁T ₂Transformer B and coil L thereof ₂L ₃L ₄L ₅L ₆L ₇L ₈Form Deng part.D wherein ₂C ₂R ₄Be serially connected in T ₂Base stage and R ₂Between, D ₁Positive pole meet L ₁, its negative pole serial connection D ₃D ₄Form loop, capacitor C with power cathode ₂Be connected in parallel on D ₁Negative pole and power cathode between, C ₄A termination power positive pole, other end serial connection L ₃And L ₅With T ₁Emitter and D ₃Positive pole join T ₁Emitter serial connection L ₇And R ₃Meet T ₁Base stage, T ₁Emitter meets T ₂Collector electrode T ₂Emitter connects power cathode, L ₈Succeed the normally opened contact K of electrical equipment J, L ₄Meet D ₁₀D ₁₁, L ₃Meet ultra under-pressure protective circuit C.

Ultra under-pressure holding circuit C mainly is by resistance R ₅R ₆R ₇R ₈R ₉R ₁₀Capacitor C ₄C ₅C ₆Diode D ₅D ₆D ₇D ₈, triode T ₃The devices such as IGCT MCR relay J form, and the operating current of this circuit is from the coil L on the transformer B ₃, through D ₅The power positive cathode of difference connection circuit after the rectification, C ₄For filter capacitor connects power positive cathode, R ₅D ₆R ₆Be serially connected with between the power positive cathode T ₃Base stage meets D ₆Positive pole, collector series connection R ₇Connect positive source, emitter stage connects power cathode, C ₅T in parallel ₃Between colelctor electrode and the emitter stage, D ₇D ₉Be serially connected in T ₃Between the control utmost point of colelctor electrode and MCR, R ₈D ₈R ₉Be serially connected between the power positive cathode D ₈Positive pole and D ₉Positive pole joins, C ₆And R ₉Parallel connection, R ₁₀And J is parallel between the negative electrode of positive source and MCR, and the negative electrode of MCR connects the negative pole of power supply.

Embodiment:

The use of multi-functional neon light inverter of the present utility model is identical with other inverter; power supply is connect the 220V civil power; be rectified into direct current through fuse RD and piezo-resistance MY and rectifier Q; for oscillating circuit B and ultra under-pressure protection circuit C work; as line voltage too high＞piezo-resistance MY pressure limiting during 370V; big electric current is by piezo-resistance MY and fuse RD, and RD blows, the inverter outage.The civil power of oscillating circuit after with rectification is through oscillation transformer B triode T ₁T ₂Form push-pull type feedback oscillation circuit, make L ₄Induce high frequency voltage, again through D ₁₀, D ₁₁Rectification is powered to neon light.When line voltage is crossed when low, by L ₃To C ₇Charging voltage also just low, voltage-stabiliser tube D ₆By T ₃Then end R ₇To C ₅Charging makes C ₅Potential rise is when being higher than D ₉The voltage stabilizing value time D ₉Conducting, the MCR conducting, relay J action normally opened contact closure makes L ₈Short circuit, T ₁T ₂End, oscillating circuit quits work.

When neon light tube damaged, output voltage reached peak, and circuit is in open-circuit condition, and the oscillation transformer B that opens a way for a long time can burn out, at this moment capacitor C ₇On voltage raise, when surpassing D ₈The voltage stabilizing value after, D ₈Conducting also triggers MCR, makes the relay J action close oscillating circuit.

Multifunction neon light inverter of the present utility model is compared with existing like product; have and all make circuit the multi-protective function such as close under the states such as overcurrent, overvoltage, under-voltage, open circuit; be not damaged with holding circuit; also have the advantages such as simple in structure, safe and reliable, stable performance and applied range; be the substitute products of existing all kinds of neon light inverters, have good use value.

Claims (4)

1, multi-functional neon light inverter comprises casing, circuit board, over-voltage over-current protection circuit A, oscillating circuit B, ultra under-pressure protective circuit C, it is characterized in that circuit A, B, C are installed on the circuit board, and circuit board is fixed in the casing.

2, according to the described inverter of claim, it is characterized in that over-voltage over-current protection circuit A is by fuse RD, piezo-resistance MY, rectifier Q, inductance L ₁, resistance R ₁R ₂And capacitor C ₁Form Deng device.RD is serially connected on the 220V power line, and MY is connected in parallel on the power line, and the 220V alternating current is serially connected with L on the direct current positive pole after the rectification ₁, R ₁With power positive cathode parallel connection, R ₂Serial connection C ₁Also be connected in parallel on the both positive and negative polarity of power supply.

3, inverter according to claim 1 is characterized in that oscillating circuit B is by transformer B, diode D ₁D ₂D ₃D ₄D ₁₀D ₁₁, capacitor C ₂C ₃C ₄, triode T ₁T ₂, transformer B, relay J normally opened contact K and coil L thereof ₂L ₃L ₄L ₅L ₆L ₇L ₈Form Deng device, wherein D ₂C ₂And R ₄Be serially connected with T ₂Base stage and R ₂Between, D ₁Positive pole meet L ₁, its negative pole serial connection D ₃D ₄Form loop, capacitor C with power cathode ₃Be connected in parallel on D ₁Negative pole and power cathode between, C ₄A termination power positive pole, other end serial connection L ₂And L ₅And T ₁Emitter stage and D ₃Positive pole join T ₁Emitter stage serial connection L ₇And R ₃Meet T ₁Base stage, T ₁Emitter stage meets T ₂Colelctor electrode, T ₂Emitter stage connect the negative pole of power supply, L ₈Succeed the normally opened contact K of electrical equipment J, L ₄Meet D ₁₀D ₁₁, L ₃Meet ultra under-pressure holding circuit C.

4, inverter according to claim 1 is characterized in that ultra under-pressure holding circuit C is by resistance R ₅R ₆R ₇R ₈R ₉R ₁₀, capacitor C ₄C ₅C ₆, diode D ₅D ₆D ₇D ₈, triode T ₃The devices such as IGCT MCR and relay J form, and the operating current of this circuit is from the coil L on the transformer B ₃, through D ₅Connect respectively power positive cathode after the rectification, wherein diode D ₅Cathode connecting transformer B on coil L ₃An end, its negative pole meets the positive pole of this circuit power, L ₃This circuit power negative pole of another termination, C ₄For filter capacitor and meet between the power positive cathode R ₅D ₆R ₆Between the serial connection positive-negative power line, T ₃Base stage meets D ₆Positive pole, collector series connection R ₇Connect positive source, emitter stage connects power cathode, C ₅Be parallel to T ₃Between colelctor electrode and the emitter stage, D ₇D ₈Be serially connected in T ₃Between the control utmost point of colelctor electrode and MCR, R ₈D ₈R ₉Meet between the power positive cathode D ₈Positive pole and D ₉Positive pole joins, C ₆And R ₉Parallel connection, R ₁₀And J is parallel between the negative electrode of positive source and MCR, and the negative electrode of MCR connects the negative pole of power supply.

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