zachtheterrible said:
But . . . howcome you are all giving me different formulas? I am terrible with learning new equations
you and I are in the same boat.
You know what I do? I go straight to work.
Zach, make sure you know Ohms law because that law can save your semiconductors lives. hehe.
so im going to say some values and if someone could plug everything in and do the equation for me as an example, that would be great.
V=3v
Charge to 20% of my power supply
R=1k
C=100uf
this is how I do it.
according to the "Technical books", The equation for time is:
t = 0.69 * R * C
so for you, it is 0.69 * 1000 * 0.0001 = 0.069
but when time moves on, 20% is 20% of 100 right?
so we do this: 0.069 * 0.20 = 0.0138
lets say 13.8ms.