- #1
SnoopyElectron
So I have been watching his videos trying to get ready for second year engineering (electrical). However, I am very confused as to what exactly is going on when he is pressing the enable/pulse switch during the run-through at 14:45. He has the enable connected to a capacitor, and he calculates the time constant of it to be 0.1 ms.
Now, my question is, why does the topmost LED that is connected to the enable & capacitor stay lit up the entire time that he is pressing the switch down? Doesn't the 0.1 ms time constant mean that current can only travel through that LED for 0.1 ms, and thus only light up for 0.1 ms ?
To be frank, I am not even sure why he is holding the switch down to correspond with the 'CLK' rate, if the goal is to make the 'EN' input the enabler, not the CLK rate.
I am not sure what I am misunderstanding, and any help would be appreciated.Thanks