Dimmable Led Grow Lights For Plants
1. Adjustable spectrum: adjustable light LED Grow Light can adjust the wavelength and spectrum of light according to the photosynthesis needs of different plants. Different wavelengths of light have different effects on the growth and flowering of plants, and by adjusting the spectrum, the growth of plants can be maximized.
2. Adjustable light intensity: Adjustable light Grow Light can adjust the light intensity according to the needs of different growth stages of plants. In the early stage of plant growth, it can provide strong light to promote the growth of seedlings; During flowering and fruiting, light intensity can be reduced, saving energy and increasing yields.
3. Adjustable light time: Adjustable light Grow Lights can adjust the light time according to the photoperiod needs of plants. Some plants need long periods of light, while others need shorter periods of light. By adjusting the light time, you can simulate the natural environment and promote the normal growth of plants.
4. Energy saving and environmental protection: The dimmable Growth Light uses LED light source, which has the characteristics of high efficiency and energy saving and long life. Compared with traditional fluorescent lamps or high-pressure sodium lamps, LED light sources are more energy efficient and environmentally friendly, and can provide higher light efficiency.
5. Safe and reliable: dimmable plant lights use low voltage power supply, do not produce heat, will not burn plants. At the same time, it also has over current, over voltage and over temperature protection functions to ensure the safety and reliability during use.
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The principle of induction heating is that when the light flows through the inductor, due to electromagnetic induction, an alternating magnetic field is generated in the workpiece in the inductor, and the alternating magnetic field generates an induced potential that forms a current, that is, a eddy current, in the workpiece. The density of the eddy current is extremely unevenly distributed in the workpiece. The closer to the surface of the workpiece, the larger the current is, and the higher the frequency is, the larger the surface current is. Therefore, when the workpiece is inductively heated, the power is concentrated on the surface layer of the workpiece, so the surface temperature of the workpiece rises most. fast. As the surface temperature of the workpiece increases, the resistivity of the workpiece increases. When the temperature reaches the Curie temperature (768 ° C), the electric power is concentrated on the inner layer.
Therefore, induction heating is a layer-by-layer heating process, and the correct selection of heating power, operating frequency and heating time can achieve the required quenching temperature.
According to the different depth of quenching, it can be divided into three types:
High frequency heating equipment
It has a set of devices that convert power frequency 50 cycles/second AC to high frequency (70000~1000000 cycles/second) (usually using a tube high frequency generator) with a quenching depth of less than 3 mm.
2. Intermediate frequency heating equipment
It also has a set of equipment that converts power frequency 50 cycles/second into intermediate frequency (500~10000 cycles/second), usually medium frequency generator (low power factor) and thyristor inverter, with quenching depth of about 5 mm. .
3. Power frequency induction heating equipment
The power frequency of the inductor is the same as the frequency of the grid, ie 50 cycles/second, so the energy can be extracted directly from the grid, and the quenching depth is above 10 mm. The downside is that the power factor is too low.
Advantages and types of induction heating
Compared with general electric furnaces, induction heating has the advantages of fast heating speed, small deformation of workpiece and high surface hardness.