8.3 Grid Voltage LED

LEDs are usually considered to be DC devices
operating from a few volts of direct current.

But DC drive suffers from losses over distance, requiring the use of higher drive voltages at the start as well as additional circuitry that waste power.

LEDs which can operate directly from an AC power supply,
provides several advantages:

• LED strings are alternately energized and de-energized at frequency of 50/60Hz thus the LED always appears to be energized.

• There is no control gear losses which could achieve higher fixture efficacy.

• Multiple package options are available.