btminzon
Full Member level 2
Hi, I need a advice in choose the better value os resistor, as shown in figure below. I have a digital signal (3.3V) with maximum 100Khz in transistor base, and the signal output is in colector. The input signal contains maximum 25mA and 3.3V, and I need to amplifi to about 80mA more or less, and 5V is desirable. Can somebody help me? tnkx!!!