The advantages/beneficial of AC-COB LED driverless

Now more than more AC COB LED driverless on the market you can find, but what is the AC COB led driverless? The concept of an AC LED is an great technology and the leds can work directly by AC100/240v,  without any driver now. AC (alternative current) LEDs can be connected directly to normal power supplies (usually 110V at 60Hz or 230V at 50Hz) and do not require a driver, like normal LEDs. The sinusoidal waveform circuit means that at each particular time half the LEDs are off while the other half is on, emitting light. This stage is reversed and repeated continually and, thus producing a constant stream of light.

AC LED light fixtures can operate directly from the normal power supply and work on voltages from as low as 12V to up to 240V. Common models use a 55V peak for the rising edge or a 110V trailing edge. Many modern AC LED units use a high performance electronic transformer which is capable of a very high intensity signal (typically over 1,000Hz), meaning that flicker is not problem and the light is continuous.

The Advantages of AC COB LED Driverless

AC LED Lights have following advantages: Driverless, Dimmable, Flicker-free, Longer Life with 4 years warranty even 5 years warranty! Here we can know the advantages from the comparison table as following:

The DC LED light with driver	AC COB LED DRIVERLESS
Variable quality for DC cob LAMPS	Stable Samsung AC COB technology, CRI>80RA,no customer complaint
High failure frequency for LED driver	Driverless LED light can avoid the failure caused by driver
he product size is limited to the driver	The product size can be as requirement
0.7 for low watt lamp.	0.9 for all driverless lamp.
Need to change driver when dimmable, cost increased for a product.	Dimmable supported, matching 85% dimmers.
2-3years warranty and lifespan time of driver	4-5 years warranty is reachable
Some of lamps with driver can’t pass LVD and EMC testing.	Patent design, compatible with SAA, CE standard, withstand high voltage 4200V
The heat sink is affected by the heat dissipation of LEDs and driver	The heat sink only need to solve the heat dissipation of LEDs
The cost is higher as work with a driver	Save the driver cost

Nowadays, there are essentially three flavors of AC LEDs on the market: low-voltage AC, high-voltage direct AC and high-voltage rectified AC. Low-voltage AC operates from 12V or 24V AC lines that have a magnetic or electronic transformer. Low-voltage AC is typically self-rectified from AC to DC. This is found in outdoor garden lighting, cove lighting and in linear retail lighting. High-voltage AC (15-55V) uses a bridge-rectified topology where the LEDs are driven in a pulsed DC mode every half cycle. With high-voltage rectified AC, some form of current-control circuitry is incorporated to keep the current from running too high during peaks in the voltage curve and doing damage to the LEDs.