Constant current versus constant voltage led drivers

 · There are often spikes in the incoming AC power supply at your wall socket. If the incoming AC supply does vary, a constant current LED driver allows the voltage to ‘float’ in order to maintain a constant current output. Constant voltage LED drivers do the opposite. They allow the current to ‘float’ in order to maintain a constant voltage.  · Simply put, a constant voltage source to drive an LED will require a specific resistor - depending on the voltage available and the desired current through the LED. Whereas a constant current source can drive an LED at a specific current "constantly" because the load (in theory) does not change.  · For my circuit, I want to use VAC mains power, via a TRIAC dimmer to an LED Driver power supply. For this use case, I am confused on whether to use a constant voltage AC to DC LED driver power supply, or a constant current AC to DC LED driver power www.doorway.rus: 2.

Constant current LED power supplies are designed with a fixed output current and a variable range output voltage. These drivers work by fluctuating the voltage along an electronic circuit; this allows the current to remain constant throughout the LED lighting installation. With a higher current rating, LED lights will seem brighter, however if unregulated, the LEDs will draw more current than it is rated for. Even though a constant voltage driver may be slightly less efficient, it enables a full flexibility to allow a greater final load size. On the other hand, constant current LED drivers are manufactured to only operate constant current devices with specific ratings, making them the more efficient of the two drivers. Constant current type LED driver. The current output by the constant current drive circuit is constant, but the output DC voltage varies within a certain range with the size of the load resistance. The load resistance is small, the output voltage is low, and the larger the load resistance, the output voltage is The higher. Constant current circuit is not afraid of load short circuit, but it is strictly forbidden to completely open the load;.

The constant-current driver changes the voltage across the LED allowing for a stable and constant current to the LED. Constant-current drivers, unlike constant-. In this video, I will talk about the CV (CONSTANT VOLTAGE) vs CC (CONSTANT CURRENT), when powering LEDs and why it is important to. 5 Feb LEDs that are rated to operate on a constant current driver require a designated supply of current usually specified in milliamps (mA) or amps .