c0x
Newbie level 4
Hi all,
I know that I should be able to do this within 5 minutes, but I am not.
I simply do not remember my mathematics well enough anymore! :_(
I have a capacitor C.
It is charged using a constant current source (Ik) and
parallel to that source is a resistor R from supply Vcc, charging it with current Ir.
Total charge current through the capacitor is hence Ic = Ik + Ir.
I want to deduct an equation telling me what the voltage Vc across a capacitor is, at any specific time t from time = 0.
Charge is 0 at time = 0.
I can easily simulate it, but now I want to have that equation, because I want to calculate it.
If you can help, please do.
/c0x
I know that I should be able to do this within 5 minutes, but I am not.
I simply do not remember my mathematics well enough anymore! :_(
I have a capacitor C.
It is charged using a constant current source (Ik) and
parallel to that source is a resistor R from supply Vcc, charging it with current Ir.
Total charge current through the capacitor is hence Ic = Ik + Ir.
I want to deduct an equation telling me what the voltage Vc across a capacitor is, at any specific time t from time = 0.
Charge is 0 at time = 0.
I can easily simulate it, but now I want to have that equation, because I want to calculate it.
If you can help, please do.
/c0x