I just read and try to understand how LED matrix work from http://www.earthshineelectronics.com/files/ASKManualRev4.pdf
At Page 97, to me it's like that if we want more then 1 led to ON all the time ... we have to do multiplexing.
and it mean that we produce POV phenomenon.
Is it true that the fact is the LEDs blink in very fast frequency rather then "actualy" ON ?
If it is true, is there any way to build a LED matrix that kan turn on multiple led in actualy-ON mode ?
My purpose is to build a matrix of opto-isolators, each in turn (via relay) will drive AC device.