DC Low Voltage Double Push Injection Phase Locked Power Combination Neon

Abstract

The invention relates to the technical field of electric light source illumination and especially relates to a DC low-voltage double-push injection phase-locking power synthesis neon lamp. A self-oscillation chip 4 and a self-oscillation chip 6 are connected with a timing resistor R2 and a capacitor C4 for synchronous oscillation. The self-oscillation chip 4 and a push-pull inverter A output power transformer T1 and the self-oscillation chip 6 and a push-pull inverter B output power transformer T2 are subjected to power synthesis through an addition coupler, and the synthesized power is subjected to voltage boost and then is fed to a tube circuit to light the neon lamp. Reference crystal oscillator signals are input to RC oscillators of the self-oscillation chip 4 and the self-oscillation chip 6 through a frequency divider for phase locking, so that luminance declination caused by power unbalance resulted from oscillation frequency change since temperature rise of a device is too high is avoided. The DC low-voltage double-push injection phase-locking power synthesis neon lamp is suitable for commercial decoration neon lamp advertisement with DC low voltage and large current for power supply.

Description

technical field [0001] The invention relates to the technical field of electric light source lighting, in particular to a DC low-voltage double-push injection phase-locked power synthesis neon lamp. Background technique [0002] Electronic ballasts in the prior art usually use LC or RC oscillators as the neon light source, and the generated oscillation frequency is affected by poor stability of temperature changes, and the power is unstable and the light intensity drops. Although the structure is simple and the cost is low. Due to the low power supply voltage, it is necessary to increase the device current to obtain high-power lighting, so that the power consumption of the power tube will increase sharply and the temperature will rise too high, resulting in a change in the oscillation frequency. As a result, the power amplitude of the light will be unbalanced as the frequency changes. At the same time, when the large current passes through the coil, the temperature rises and...

AI Technical Summary

Problems solved by technology

[0002] Electronic ballasts in the prior art usually use LC or RC oscillators as the neon light source, and the oscillation frequency generated is affected by poor stability of temperature changes. The power is unstable and the light intensity drops. Although the structure is simple and the cost is low

Due to the low power supply voltage, it is necessary to increase the current of the device to obtain high-power lighting, so that the power consumption of the power tube will increase sharply and the temperature will rise too high, resulting in a change in the oscillation frequency. As a result, the power amplitude of the light will be unbalanced as the frequency changes.

At the same time, when the large current passes through the coil, the temperature rises and the magnetic permeability decreases, and the magnetic saturation inductance becomes smaller and the impedance tends to zero. The working time of the lamp is proportional to the temperature rise, and the temperature rise accelerates the aging of the device. Burning out components shortens service life

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