sagala2003
New Member
Hi All Guru,
I have problem with matrix display moving sign. I bought small moving sign 128 x 8 pixel where column line driver direct using the output of IC 74HC595 and row line driver it has MOSFET P-Channel 5 A. I tried to change 0ne pixel/dot LED become to big LED have 17 LED paralell via Resistor 120 ohm so that each 0ne big LED have about 420 mA. To drive 128 big LED x 8 big LED will use about 50 A Row line and 4 A for each of column line. How to drive IC 74HC595 so that will be generate about 4 A current for each line? What type of MOSFET P-channel to drive 50A row line? Thank you for your help. Sorry about my English.
Regards,
Fazy
I have problem with matrix display moving sign. I bought small moving sign 128 x 8 pixel where column line driver direct using the output of IC 74HC595 and row line driver it has MOSFET P-Channel 5 A. I tried to change 0ne pixel/dot LED become to big LED have 17 LED paralell via Resistor 120 ohm so that each 0ne big LED have about 420 mA. To drive 128 big LED x 8 big LED will use about 50 A Row line and 4 A for each of column line. How to drive IC 74HC595 so that will be generate about 4 A current for each line? What type of MOSFET P-channel to drive 50A row line? Thank you for your help. Sorry about my English.
Regards,
Fazy