Solar power supply double-push injection-locking power synthesis metal halide lamp

Abstract

The invention relates to the technical field of electric light source illumination and specifically discloses a solar power supply double-push injection-locking power synthesis metal halide lamp. Two self-sustained oscillation chips 4, 6 are together connected to a timing resistor and a capacitor for synchronous oscillation. A self-sustained oscillation chip 4, a push-pull amplifier A, an output power transformer T1, a self-sustained oscillation chip 6, a push-pull amplifier B, and an output power transformer T2 are fed into an addition coupler in a reverse-phase way for power synthesis. The synthesized power further undergoes a voltage boost and is then fed into a lamp tube circuit for turning a lamp tube on. Signals of a reference crystal oscillator are injected into RC oscillators of the two self-sustained oscillation chips 4, 6 through a frequency divider for phase locking. Excessive temperature rise of the device, changes of oscillation frequency, imbalanced power and dim light are avoided. A frequency modulation signal generator outputs triangular-wave low-frequency signals which are accessed to RC oscillators of the two self-sustained oscillation chips 4, 6 for suppressing light scintillation in a frequency modulation way. The metal halide lamp is suitably used in illumination occasions as a metal halide lamp powered by a solar heavy-current power supply.

Description

technical field [0001] The invention relates to the technical field of electric light source lighting, in particular to a metal halide lamp with dual push-injection lock power synthesis of solar power. Background technique [0002] Electronic ballasts in the prior art generally use LC or RC oscillators as the light source for metal halide lamps, and the oscillation frequency generated is affected by poor stability of temperature changes, and the power is unstable and the light intensity drops. High current, 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, resulting in a sharp increase in the power consumption of the oscillating power tube and an excessively high temperature rise, 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 cur...

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Problems solved by technology

[0002] Electronic ballasts in the prior art generally use LC or RC oscillators as the light source for metal halide lamps, and the oscillation frequency generated is affected by poor stability of temperature changes, and the power is unstable and the light intensity drops. High current, 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, resulting in a sharp increase in the power consumption of the oscillating power tube and an excessively high temperature rise, 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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