Series resonance neon light transformer

Abstract

The invention discloses a power circuit with constant power output, which includes a transformer and a capacitor C, specifically connected as follows: the primary coil L1 of the transformer is connected in series with the capacitor C to form the input end of the circuit, and one end of the secondary coil L2 is one of the output ends of the circuit terminal, the other end of the secondary coil L2 and one end of the secondary coil L3 are commonly grounded, and the other end of the secondary coil L3 is the other end of the circuit output. The invention utilizes the resonant principle, and the resonant impedance is close to resistive, so the power factor tends to be 1. Since it no longer depends on the magnetic flux leakage shunt to work, the magnetic field leakage is low, and the iron loss and copper loss are very small. The invention is a green lighting power supply with small volume, light weight, low cost and no electromagnetic environment pollution.

Description

technical field [0001] The invention relates to a power supply for neon lights, in particular to a series resonance type neon light power supply. Background technique [0002] At present, there are two main types of power supplies for neon lights, one is a flux leakage transformer, and the other is an electronic transformer. The advantages of the magnetic flux leakage transformer are: the manufacturing process is simple, and the disadvantages are: it forms a magnetic load on the power grid. Due to a large amount of magnetic flux leakage, the power factor of the transformer is as low as 0.5-0.65. The consumption of raw materials is large and the cost is high. The electronic transformer uses an electronic oscillating circuit to generate 15-25KC non-sine wave oscillation, and the transformer outputs. Its advantages are: small size, high power factor, and high efficiency. The disadvantage is: large harmonic interference, more than 25% of the third harmonic, which will cause el...

AI Technical Summary

Problems solved by technology

The advantages of the magnetic flux leakage transformer are: the manufacturing process is simple, and the disadvantages are: it forms a magnetic load on the power grid. Due to a large amount of magnetic flux leakage, the power factor of the transformer is as low as 0.5-0.65. Large consumption of raw materials and high cost

The disadvantage is: large harmonic interference, more than 25% of the third harmonic, electromagnetic pollution to the surrounding environment

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