Correct option is A
An
LED driver circuit is designed to provide a constant current or voltage to LEDs for efficient and stable operation. Typically, it includes:
1.
Rectifier circuit: Converts AC voltage to DC voltage.
2.
Filter circuit: Smooths out the DC voltage by removing ripples.
3.
Power resistor: Sometimes used for basic current limiting in simpler LED circuits.
However, an
oscillator circuit is not a standard component of an LED driver. Oscillators are typically used in circuits that require frequency generation or switching, such as inverters or signal processing systems, not in basic LED driver circuits.
