If I have a 10VDC supply current limited to 1AMP to charge a capacitor through a 1 ohm resistor, what will happen and how long does it take to charge? I need a capacitor that can "eat" this power for 2ms.
1A*1ohm = 1VDC
When I don't have a capacitor connected, the voltage out of the supply reads 1V, because the resistance is only 1 ohm. But when I add the capacitor, the voltage accross it reads 10VDC. I know that the capacitor builds up in voltage as time passes. Is this voltage buildup linear with a constant current source?
Given a certain Capacitance, how do I calculate the voltage at any time T?
If I use a resistor higher than 10 ohms, will my current drop below 1A? Does the resistor still have the same operation at ALL resistances under 1 ohm?
(yes the current regulator shown here is set for 1.25A) That's what I'm designing for.
I expect a 3-4V drop across my current regulator+resistor. What happens if my load is only 2.2 ohms? Will the gate of the MOSFET still reach ~6-7V? I'm wanting to delay voltage to the MOSFET gate reaching 5V by more than 2ms.