Hey guys, I am just having trouble calculating the time it takes for the transistor to switch off after releasing the switch.
Assume we power on, and released the switch, using the equation Vc = Vo*e^(-t/RC). I replaced Vc by 0.7 Volts, realizing that the transistor will turn off Vb<0.7, I get t app = 1.5 seconds
But here, the led turns off after 3 seconds.
What am I missing?