Solar power supply double-half-bridge injection phase-locking light-emitting diode LED array lamp

Abstract

The invention relates to the technical field of electric light source illumination and specifically discloses a solar power supply double-half-bridge injection phase-locking light-emitting diode LED array lamp. The light-emitting diode LED array lamp comprises a solar power supply, a light-emitting diode LED array lamp tube, a reference crystal oscillator, a frequency divider, two self-sustained oscillation chips 4, 6, a half-bridge inverter A, a half-bridge inverter B, an addition coupler, a full-wave rectification circuit and a lamp tube abnormal current detector. RC oscillators of the two self-sustained oscillation chips 4, 6 are connected with a resistor R3 and a capacitor C5 for synchronous oscillation. The self-sustained oscillation chip 4 and a half-bridge inverter A output power transformer T1, and the self-sustained oscillation chip 6 and a half-bridge inverter B output power transformer T2 are fed into the addition coupler. The synthesized power drives the light-emitting diode LED array lamp tube through the full-wave rectification circuit. Reference signals are injected into the RC oscillators of the two self-sustained oscillation chips 4, 6 through the frequency divider for phase locking, and thus large-power illumination is achieved, and luminance declination caused by power unbalance resulted from oscillation frequency change since temperature rise of a device is too high is avoided. The light-emitting diode LED array lamp is suitable for illumination of the large-power light-emitting diode LED array lamp powered by the solar power supply.

Description

technical field [0001] The invention relates to the technical field of electric light source lighting, in particular to a solar power supply double-half bridge injection lock light-emitting diode LED array lamp. Background technique [0002] In the prior art, electronic transformers generally use LC or RC oscillators as the light source of light-emitting diode LED array lights. The oscillation frequency generated is affected by the poor stability of temperature changes and the power is not stable enough, resulting in a decrease in light intensity. Although the structure is simple and the cost is low. However, in order to obtain high-power lighting, the current of the device must be increased, which will cause the power consumption of the oscillating power tube to 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 tim...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, electronic transformers generally use LC or RC oscillators as the light source of light-emitting diode LED array lights. The oscillation frequency generated is affected by the poor stability of temperature changes and the power is not stable enough, resulting in a decrease in light intensity. Although the structure is simple and the cost is low

However, in order to obtain high-power lighting, the current of the device must be increased, which will cause the power consumption of the oscillating power tube to 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, the magnetic saturation inductance becomes smaller and the impedance tends to zero. The working time of the lamp is proportional to the temperature rise. Device shortens service life

Images