Hello all,
I should measure the current of a circuit by a micro controller. When the current becomes more than 20A, micro will not allow the circuit works. I know that I should work with ADC in micro. the voltage is obvious; 5V.
but the problem is that both resistance and current are unknown.
what's the maximum current of micro? is there a relation with them??
How should I solve this problem??
any help will be appreciated.
I should measure the current of a circuit by a micro controller. When the current becomes more than 20A, micro will not allow the circuit works. I know that I should work with ADC in micro. the voltage is obvious; 5V.
but the problem is that both resistance and current are unknown.
what's the maximum current of micro? is there a relation with them??
How should I solve this problem??
any help will be appreciated.