Can any one kindly help me in using the P channel mosfet as source for switching of LED display? As I've connected it like 16 Mosfets with common source giving 5V from diode b/w power supply, drain is for the16 rows of 32 LEDs. Gate is connected to the shift register. The problem is the intensity of Light. It is not glowing to its extent. I'm using dm134b as the sink. Kindly suggest if we can alter the connections of MOSFET or any thing else. Plz help!!!!!