How so? I thought darlingtons are inherently slower, in fact I was concerned if they were getting fully ON before going off again. I thought that MOSFETS are inherently better until you are into MHz switching rates,
Isn't the gate charge dissipated when the pin is taken low? I haven't even added a gate to source high value resistor yet, which I understand is typically how the gate charge is bled off.
Even without any additional components, no gate resistor, it seems to work great.. Though the gate resistor is a better idea so as to protect the AVR from the current draw of charging the gate. I have read conflicting rcommendations regarding the use of gate resistance, and even use of the gate to source resistance.
Even if there is a charging delay, that only shortens the length of the emitted pulse from the LED, I would only have to compensate by adding that time interval to the turnoff delay. If I have read properly, these should be able to switch in the tens of nanoseconds in their normal use.
Am I missing something?