I'm currently working on some simple circuits to learn about circuitry, and being a Physics major I have a pretty good grasp of the mathematics and concepts, but I'm a little confused about capacitors. I understand how they work, but am curious about their placement in a circuit.
As a simple example lets say I wanted to charge a capacitor in a circuit quickly and then discharge it slowly. Obviously I would slow the discharge rate by connecting the capacitor across a resistor, but the charging process is where I have a question. Would I still need a resistor? I feel like it depends on what the input to the capacitor would be, and resistors could be used as needed to control the rate of charging. Even still I feel like having a resistor would be a safer approach. Not really sure.