Product Evaluation:TP-LINK LB120 LED lights

The concept of smart home drives people to create a new way to interact with the home. As a result, the lamps and lanterns became one of the important business entrance for the smart home field . That why the smart light bulb appears, closely combining the wireless  and LED lighting technology.

Currently,there are various intelligent LED designs on the market .The representative design includes : based on Zigbee technology, based on low-power Bluetooth technology, or based on WiFi technology. Because of its early development, Zigbee technology is mature, multi-node networking and other features can achieve more control of intelligent LED lights, the drawback is the need for gateway; and low-power Bluetooth technology rapidly rises in recent years,also become a very popular intelligent communication solution ,the disadvantage is distance is not far enough; and WiFi smart LED technology needs to combine other equipment , the starting point is high, but with the current popularity of the Internet, the router has to be regarded as an essential family "micro appliances" ,WiFi will also be the smart home solutions, the mainstream of communication technology in smart home solutions.

Today ,we want to talk about WiFi-based LED, TP-LINK WiFi intelligent LED bulb, the specific model LB120.

LB120 cardboard packaging is very tall. Its appearance is good, the acrylic shell process is very comfortable to do stunned, and the appearance is also very seductive.

The basic electrical parameters of the WiFi smart switch are as follows: 100 ~ 120V ac 50 / 60Hz input, maximum 15A, 600W load output. Its role is to replace the more troublesome mobile phone APP light switch control, and in practical applications can be removed from the wiring connection with the light bulb control, that is really practical.

LB120 lampshade and lamp body combination have a close integration, after open ,an asphyxiating rubber flavor.

In the LED lamp beads, there is a circle of light guide column, you can make color rendering more uniform, better visual effects

There are 20 LED, 10 warm LED and 10 white LED staggered arranged in a circle. 3 wires, presumably a control, the other two were in series with two different LED lamp beads.

As the LED aluminum substrate heat, there is a large number of thermal grease covered, between the the aluminum plate of LED lamp beads and the following thermal aluminum contact surface.

Open the WiFi module shield can see the specific WiFI chip, Qualcomm QCA4010, and also amplify the additional SPI Flash, see the signs should be GigaDevice SPI Flash products.

The back of the board is the entire power conversion module, and LED bulb LED driving circuit.

LED driver circuit is used in NXP thyristor dimming IC SSL21082A.

Compared to other programs, such as low-power Bluetooth LED light bulbs, the LB120 LED lights of TP-LINK has a wider operating space, Only there is the place of the network ,you can easily operate it. That is a very bright spot indeed.

  Author ：Darcy Beaufort — WIN SOURCE ELECTRONICS