How to distinguish between AC contactor and DC contactor 1. The core of the AC contactor is made by laminating silicon steel sheets insulated from each other, and made into a double E-shape; the core of the DC contactor is made of a single piece of soft iron, mostly U-shaped. 2. Most of the AC contactors use grid slice arc extinguishing device, but the DC contactor uses magnetic blowing arc extinguishing device. 3. AC contactor Since the coil is fed with alternating current, a short circuit ring is embedded on the static iron core to eliminate the vibration and noise generated by the electromagnet, but the DC contactor is not required. 4. The AC contactor has a small number of turns and a low resistance, while the DC contactor has a large number of turns and a large resistance. 5. AC contactor starting current is large, not suitable for frequent starting and disconnecting occasions, the operating frequency of up to 600 times / h, while the DC contactor operating frequency up to 2000 times / h. 6. The AC contactor is applied to the breaking AC circuit, and the DC contactor is applied to the breaking DC circuit. 7. The use cost of AC contactor is low, and the use cost of DC contactor is high.
3535 Blue SMD LED got a bigger size than the others SMD LED, which mean it will got a wider beam than the others SMD LED. People always deeply loved by their high brightness.
3535 Blue SMD LED Shenzhen Best LED Opto-electronic Co.,Ltd , https://www.bestsmd.com
3535 SMD LED, size is 3.5*3.5mm and the voltage is 2.8-3.5V.
In this catalog, we mainly introduce the 3535 Blue SMD LED of visible light.
It is often used in LED lighting, LED Lamps, LED backlight, LED panel lights, LED furniture, grow light LED, fill light LED, LED aperture and other lighting products.
In this catalog, we mainly introduce the 3535 blue SMD LED.
For this blue SMD LED, we can package with single chip 3535 SMD LED or 2 chips 3535 SMD LED, and the power can be 1W 3535 blue SMD LED, 2W 3535 blue SMD LED, 3W 3535 blue SMD LED and so on.