四，In which aspects that common cathode led display can save money ?ġ Electricity& Operating costs: precision power supply reduces LED display power loss, saving operating costs.Ģ Equipment investment: low-heat caused can also save air conditioning, fans and other cooling equipment.ģ Maintenance and repair costs: the follow-up fully enclosed die-cast aluminum bottom shell, the components are maintained, so that its lifespan is about twice of the conventional led screens. Through the comparison of their power supply mode, it is known that the power consumption of common cathode LED display is much lower than that of common anode display caused, so that the heat caused is also lower than conventional common anode led screen. 三，Why the common cathode LED display cause less heat ? precision power supply Separately, less power loss, and the heat generated is much lower in the operation of LED display.

二．What is the difference between the common cathode / common anode LED display?ġ, The power supply direction is different: for the common anode LED display, the current flows from the PCB board to the led lights, and the RGB led light is uniformly powered, which increases the forward voltage drop of the circuit for the common cathode LED display,current passes through the led bead to the IC negative pole, positive The pressure is reduced and the conduction internal resistance is small.Ģ. The power supply voltage is different: the common anode LED display usually gives red, green and blue led beads a voltage higher than 3.8V (such as 5V unified power supply, the power loss is large for the common cathode LED display, it’s based on the actual voltage required by the chip of red, green and blue led beads (the voltage of red led bead is about 2.5V, about 3.8V for the voltage of blue and green led bead needed ).

Anode v cathode