I have a question regarding circuit design, however i'm not sure whether i can express it in correct terms or if there's a fundamental flaw in my thinking.
- When using a device,how do we know exactly how much power it requires in order to start up/operate correctly?
- How do we calculate such requirements?
Let's say we have a circuit consisting of a power supply, resistor and some device like a chip or other microcontroller, or any other kind of load for that matter.
- How do we reason about the power supply needed for that device to work?
- Knowing that power is essentially voltage times current, how do I choose values for those components?
Forgive if my qeustion does make any sense Regards