A circuit requires 5V and 12V voltage to work, how to design the circuit?
A 12 power supply, need to solve the 12, 5 of the parallel 12, in the need for 5 on the way in series with a divider resistor on it.
12V this way can be directly output. Or the battery voltage is higher than 12V with a buck circuit to stabilize the 12V output .5V is also. Ordinary current small with 7805 and 7812 can.
To 12V and 5V dual voltage. Will supply the battery voltage of not less than 12V.
