04-04-2012, 01:10 PM
Theory behind calculation of Voltage divider circuit.
All we want is input voltage to ADC should not increase 5V and
Our maximum I/p Voltage to voltmeter is 15V only. So we design
the voltage divider circuit as follows.
where Vmax is Maximum i/p voltage to voltmeter.
Vip is i/p voltage to ADC.
R1 and R2 are resistance of voltage divider circuit.