What are the different types of LED power supplies / drivers?

LEDs are driven by constant current (350mA, 700mA or 1A) drivers or constant voltage (10V, 12V or 24V) drivers.

Constant current drivers fix the current of the system and vary the voltage depending on the load of the LED.

Constant voltage drivers require a fixed voltage, and the LED loads are added in parallel across the output of the driver until maximum output currents are reached.